Inverter-charger combined device for electric vehicles and method thereof

Description

BACKGROUND OF THE INVENTION

Field of the invention

[0001] The present disclosure relates to an inverter-charger combined device for electric vehicles and a control method thereof.

Description of Related Art

[0002] Generally, an electric vehicle includes a high voltage battery charged with a high voltage, e.g., approximately 72 volts, a 3-phase motor driven by a power charged in the high voltage battery to run an electric vehicle, and an inverter for driving the 3-phase motor. However, the driving of the 3-phase motor using the power charged in the high voltage batter is limited by capacity of the high voltage battery.

[0003] That is, in a case the power remaining in the high voltage battery of the electric vehicle drops below a predetermined level, the 3-phase motor cannot be driven any longer. Hence, the electric vehicle is equipped with a high voltage charger to charge the high voltage battery. The high voltage charger may be largely classified to two types, i.e., a slow speed charger using a household single AC power, and a high speed charger using a transmission and distribution 3-phase AC power.

[0004] Meanwhile, each of the inverter, the high voltage charger and the low voltage charger is separately installed, such that it takes lots of time and man power to respectively install the inverter, the high voltage charger and the low voltage charger on the electric vehicle. Thus, an inverter-charger combined device for electric vehicle is being developed that is combined of the inverter, the high voltage charger and the low voltage charger in one integrated configuration.

[0005] However, a power unit applied to a switching element of the inverter-charger combined device is configured in a common power source, and there is no sufficient measure to cope with a situation where the power unit is out of order.

[0006] US 2011/169449 discloses a fraction inverter circuit includes a first energy storage device configured to output a DC voltage, a first bi-directional DC-to-AC voltage inverter coupled to the first energy storage device, and a first electromechanical device. The first electromechanical device includes a first plurality of conductors coupled to the first bi-directional DC-to-AC voltage inverter, a second plurality of conductors coupled together, and a plurality of windings coupled between the first plurality of conductors and the second plurality of conductors. The traction converter circuit also includes a charge bus comprising a first conductor coupled to the second plurality of conductors of the first electromechanical device, the charge bus configured to transmit a charging current to or receive a charging current from the first electromechanical device to charge the first energy storage device via the first electromechanical device and the first bi-directional DC-to-AC voltage inverter.

[0007] US 2006/145542 discloses that a vehicle auxiliary electric-power-supplying system can normally stop an electric power inverter by the frequency in use for an electric power supplier being suppressed as low as possible, and electric power being immediately started to be supplied from the power supplier to a controller in a case in which normal electric power has become unable to be obtained from power-outputting of the electric power inverter. The system includes: the electric power inverter for converting a first type of dc power received through an overhead wire to a second type of dc power, and supplying the second type of dc power to a dc load; the power supplier for converting the first type of dc power received through the overhead wire to a third type of dc power; a power-outputting unit, connected to both the electric power inverter and the electric power supplier, for outputting either the second type of dc power or the third type of dc power; and the controller for receiving power from the power-outputting unit, and controlling the electric power inverter.

[0008] EP 2 113 410 discloses a vehicle has a low voltage power generating unit mounted thereon, which passively generates low voltage power when the vehicle is electrically connected to commercial power supply through coupling of a connector unit. A winding transformer transforms the commercial power supply input to the primary side with a prescribed ratio of transformation, and the transformation is performed without requiring any control signal from the outside. The AC power with voltage lowered, output from the secondary side of winding transformer, is rectified by a diode unit, and a low voltage power is generated. The low voltage power generated by the diode unit is supplied through a supplementary low voltage DC line (SDCL) to a sub battery (SB) and to a controller.

SUMMARY OF THE INVENTION

[0009] Exemplary aspects of the present disclosure are to substantially solve at least the above problems and/or disadvantages and to provide at least the advantages as mentioned below. Thus, the present disclosure is directed to provide an inverter-charger combined device for electric vehicles configured to individually mount a power unit applied to a switching element of the inverter-charger combined device to enable a stable operation even during partial failure of the power unit, and a control method thereof.

[0010] Technical problems to be solved by the present disclosure are not restricted to the above-mentioned descriptions, and any other technical problems not mentioned so far will be clearly appreciated from the following description by skilled in the art.

[0011] In one general aspect of the present invention, there is provided an inverter-charger combined device for electric vehicles configured to drive a 3-phase motor by charging a high voltage battery in case of charging mode, and switching a power of the high voltage battery in case of operation mode, the device comprising:

a rectifier providing a power for charging the high voltage by rectifying an inputted AC power;

an inverter receiving the AC power rectified by the rectifier via the 3-phase motor in case of charging mode to rectify the AC power to a DC power in case of charging mode, and converting the DC power charged in the high voltage battery in case of operation mode to driving the 3-phase motor;

a power supply unit supplying a power to drive the rectifier and the inverter;

a first switching unit; and

a second switching unit;

wherein the power supply unit includes a first power supply unit for supplying a power to drive a switching unit of the rectifier, and a second power supply unit for supplying a power to drive a switching unit of the inverter at default state,
wherein the first switching unit selects the first power supply unit or the second power supply unit to supply a power to drive the switching unit of the rectifier; and
wherein the second switching unit selects the first power supply unit or the second power supply unit to supply a power to drive the switching unit of the inverter, and
wherein the first switching unit and the second switching unit are configured to supply a power to the switching unit of the rectifier and the switching unit of the inverter from the second power supply unit by selecting the second power supply unit in case of failure at the first power supply unit, and to supply a power to the switching unit of the rectifier and the switching unit of the inverter from the first power supply unit by selecting the first power supply unit in case of failure at the second power supply unit.

[0012] Preferably, but not necessarily, the device may further comprise: a low voltage rectifier for supplying a low voltage DC power to a load including a controller; and a controller configured to control the rectifier, the inverter and the low voltage rectifier.

[0013] Preferably, but not necessarily, each of the first and second power supply units may be configured to independently supply a power.

[0014] Preferably, but not necessarily, the first switching unit may be embedded in the first power supply unit, and the second switching unit may be embedded in the second power supply unit.

[0015] Preferably, but not necessarily, the first switching unit and the second switching unit may be configured to select the first power supply unit or the second power supply unit in response to an operation state of the first power supply unit or the second power supply unit.

[0016] In another general aspect of the present invention, there is provided a control method for an inverter-charger combined device for electric vehicles configured to drive a 3-phase motor by charging a high voltage battery in case of charging mode, and switching a power of the high voltage battery in case of operation mode, the method comprising:

selecting a switch of a rectifier rectifying an AC power inputted for providing a power for charging the high voltage battery in case of charging mode;

supplying a driving power supplied from a first power supply unit to the switch of the rectifier for rectifying the inputted AC power;

supplying the AC power rectified by the rectifier to the 3-phase motor; and

receiving by a inverter having a switch, the switch being supplied with a driving power from a second power supply unit, the rectified AC power from the 3-phase motor for rectification to a DC power, and charging the high voltage battery,

wherein the first power supply unit and the second power supply unit are respectively connected to the switching unit of the rectifier and to the switching unit of the inverter for supply power at default state,
wherein the first switching unit selects the first power supply unit or the second power supply unit to supply a power to drive the switching unit of the rectifier; and
wherein the second switching unit selects the first power supply unit or the second power supply unit to supply a power to drive the switching unit of the inverter, and
wherein the first switching unit and the second switching unit are configured to supply a power to the switching unit of the rectifier and the switching unit of the inverter from the second power supply unit by selecting the second power supply unit in case of failure at the first power supply unit, and to supply a power to the switching unit of the rectifier and the switching unit of the inverter from the first power supply unit by selecting the first power supply unit in case of failure at the second power supply unit.

[0017] In still another general aspect of the present invention, there is provided a control method for an inverter-charger combined device for electric vehicles configured to drive a 3-phase motor by charging a high voltage battery in case of charging mode, and switching a power of the high voltage battery in case of operation mode, the method comprising:

disconnecting a connection between the rectifier supplying a rectified AC power to the 3-phase motor and the 3-phase motor by controlling a switch of the rectifier being supplied with a driving power from a first power supply unit;

selecting a switch of an inverter supplying a power to drive the 3-phase motor from the charged high voltage battery, the switch of the inverter being supplied with a driving power from a second power supply unit in case of operation mode;

supplying a DC power charged in the high voltage battery to the switch of the inverter; and driving the 3-phase motor by converting the DC power to a 3-phase AC power,

wherein the first power supply unit and the second power supply unit are respectively connected to the switching unit of the rectifier and to the switching unit of the inverter for supply power at default state,
wherein the first switching unit selects the first power supply unit or the second power supply unit to supply a power to drive the switching unit of the rectifier; and
wherein the second switching unit selects the first power supply unit or the second power supply unit to supply a power to drive the switching unit of the inverter, and
wherein the first switching unit and the second switching unit are configured to supply a power to the switching unit of the rectifier and the switching unit of the inverter from the second power supply unit by selecting the second power supply unit in case of failure at the first power supply unit, and to supply a power to the switching unit of the rectifier and the switching unit of the inverter from the first power supply unit by selecting the

[0018] first power supply unit in case of failure at the second power supply unit.

[0019] In an advantageous effect, the inverter-charger combined device for electric vehicles can be normally operated using other remaining power supply units even if one power supply unit fails, by separately configuring a power supply unit of a rectifier and a power supply unit of an inverter, in a case all functions are inoperative if a common power supply unit to the rectifier and the inverter is used and becomes inoperative.

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The teachings of the present disclosure can be readily understood by considering the following detailed description in conjunction with the accompanying drawings, in which:

FIG.1a is a block diagram illustrating a configuration of an inverter-charger combined device for electric vehicles according to an exemplary embodiment of the present disclosure;

FIG.1b is a block diagram illustrating a configuration of FIG.1a;

FIG.2a is a block diagram illustrating an inverter-charger combined device for electric vehicles according to an exemplary embodiment of the present disclosure; and

FIG.2b is a block diagram illustrating a configuration of a power supply unit in an inverter-charger combined device for electric vehicles according to an exemplary embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

[0021] Various exemplary embodiments will be described more fully hereinafter with reference to the accompanying drawings, in which some exemplary embodiments are shown. The present inventive concept may, however, be embodied in many different forms and should not be construed as limited to the example embodiments set forth herein. Rather, the described aspect is intended to embrace all such alterations, modifications, and variations that fall within the scope and novel idea of the present disclosure.

[0022] Now, exemplary embodiments of the present disclosure will be explained in detail together with the figures.

[0023] The inverter-charger combined device (100) for electric vehicles according to an exemplary embodiment of the present disclosure may include a rectifier rectifying an AC power, a low voltage rectifier (170) for supplying a low voltage DC power to a load including a controller, a motor (130) for driving an electric vehicle, an inverter (140) driving the motor and supplying a charged power to a high voltage battery (160), a controller (180) for controlling the rectifier, the low voltage rectifier and the inverter.

[0024] The rectifier (120) may provide a power for charging the high voltage battery (160) by rectifying a single AC power (110).

[0025] The low voltage rectifier (170) for supplying a low voltage DC power may receive a DC power (LDC+, LDC-) rectified by the inverter (140), perform a voltage drop and provide the voltage-dropped power to a device or an element requiring a low voltage (e.g., 12V) DC power inside the device (100).

[0026] Furthermore, the low voltage rectifier (170) may charge a low voltage battery (151) via a transformer. The low voltage rectifier (170) may be analogous to that mounted on a conventional vehicle.

[0027] The motor (130) is provided to drive an electric vehicle and may function to transmit an AC power rectified by a single phase rectifier to an inverter side during a charging mode. Furthermore, the motor (130) may be driven by being supplied with an AC power generated by switching, by an inverter, a power charged in a battery during an operation mode.

[0028] The inverter (140) may function to rectify a DC power by receiving an AC power rectified by a single phase rectifier from a 3-phase motor to a DC power. The inverter (140) may function to drive a 3-phase motor by converting a DC power charged in a battery to a 3-phase AC power during an operation mode.

[0029] The controller (180) may function to perform an overall control of elements included in the device (100). The controller (180) may control a switching element configured to disconnect a connection between the rectifier (120) and the motor (130) during an operation mode. For example, the switching element may be a switching unit (SW) inside the rectifier (120).

[0030] The controller (180) may control operations of the rectifier (120), the low voltage rectifier (170) and the inverter (140). Furthermore, the controller (180) may control an additional function of an electric vehicle (EV).

[0031] Meanwhile, in a case the inverter-charger combined device (100) for electric vehicles is operated under an operation mode or a charging mode, a driving power must be supplied to each switching unit (S1 to S6) of the inverter (140) and the switching unit (SW) of the rectifier (120), details of which will be described with reference to FIG.1a.

[0032] FIG.1b is a schematic block diagram illustrating a configuration of FIG.1a. The low voltage rectifier (170) and the controller (180) illustrated in the lower part of FIG.1b will be omitted in explanation for brevity of explanation and easy understanding.

[0033] Referring to FIG.1b, a power supply unit (190) is mounted on the rectifier (120) and the inverter (140) for supplying a power to controllably drive a switching unit mounted inside the rectifier (120) and the inverter (140). The power supply unit (190) may provide a power for driving the rectifier (120) and the switching unit of the inverter (140). However, as described in the foregoing, the power supply unit (190) in FIG.1b is a common element for the rectifier (120) and the inverter (140), such that in a case the power supply unit (190) fails to operate normally, that is, if the power supply unit (190) is inoperative, there is a problem in which the inverter-charger combined device (100) cannot be operated normally. A measure to solve the problem will be described later.

[0034] FIG.2a is a block diagram illustrating an inverter-charger combined device for electric vehicles according to an exemplary embodiment of the present disclosure.

[0035] Referring to FIG.2a, the inverter-charger combined device (100) for electric vehicles according to an exemplary embodiment of the present disclosure may include two power supply units, that is, a first power supply unit (191) and a second power supply unit (192).

[0036] The first power supply unit (191) is to provide a driving power of a switching unit of the rectifier (120), and the second power supply unit (192) is to provide a driving power of a switching unit of the inverter (140).

[0037] The first power supply unit (191) and the second power supply unit (192) may operate independently and may independently provide a power to the switching unit of the rectifier (120) and the switching unit of the inverter (140). That is, even if any one of the first power supply unit (191) and the second power supply unit (192) develops a failure, the remaining other power supply unit is not affected at all.

[0038] Furthermore, a switching unit may be interposed between the first power supply unit (191) and the switching unit of the rectifier (120) or between the second power supply unit (192) and the switching unit of the inverter (140). The switching unit for selecting the power supply unit may select the first power supply unit (191) or the second power supply unit (192) in response to operation state of the first power supply unit (191) or the second power supply unit (192), or may be connected to the switching unit of the rectifier (120) or the switching unit of the inverter (140).

[0039] The operational control of the switching unit may be implemented by the abovementioned controller (180), or may be implemented by separate control means (not shown) inside the first power supply unit (191) or the second power supply unit (192) for operational control of the switching unit. The operation of the switching unit will be described in detail in the later explanation.

[0040] FIG.2b is a block diagram illustrating a configuration of a power supply unit in an inverter-charger combined device for electric vehicles according to an exemplary embodiment of the present disclosure.

[0041] Referring to FIG.2a, the inverter-charger combined device for electric vehicles according to an exemplary embodiment of the present disclosure may include two power supply units, that is, the first power supply unit (191) and the second power supply unit (192). Furthermore, these power supply units are respectively connected to a switching unit (121) of the rectifier and to a switching unit (141) of the inverter for supply of power thereto. Of course, the connection relationship and power supply for driving means a connection relationship and power supply at the default state, and these connection relationships and power supply may be different from a case where the power supply units (191, 192) are defaulted.

[0042] Basically, the inverter-charger combined device for electric vehicles according to an exemplary embodiment of the present disclosure is configured in such a manner that a driving power is supplied to the switching unit (121) of the rectifier (120) and to the switching unit (141) of the inverter (140) via mutually different power supply units. In other words, as explained before, during the default state, the first power supply unit (191) may supply a driving power to the switching unit (121) of the rectifier (120) and the second power supply unit (192) may supply a driving power to the switching unit (141) of the inverter (140).

[0043] However, in a case the first power supply unit (191) is not operating normally to disable to supply an appropriate power to the switching unit (121, SW) of the rectifier (120), the combined device (100) in FIG.1 cannot perform a charging operation (or a charging mode) of the high voltage battery (150), and only the driving (or driving mode) of the motor (130) can be performed via a power charged in the high voltage battery (150). Thus, under this circumstance, in a case a user or the controller (180) determines that the combined device must be operated under a charging mode, the combined device comes to be in an inoperative state.

[0044] Furthermore, in a case the second power supply unit (192) is not operating normally to disable to supply an appropriate power to the switching unit (141, S1 to S6) of the inverter (140), the combined device (100) cannot perform the charging operation of the high voltage battery (150) and cannot drive the motor (130) via the power charged in the high voltage battery (150), because the inverter (140) is not operating normally.

[0045] In order to solve the problems thus explained, the inverter-charger combined device for electric vehicles according to an exemplary embodiment of the present disclosure may use a first switching unit (193) and a second switching unit (194).

[0046] Referring to FIG.2b, although it is depicted that the first switching unit (193) and the second switching unit (194) are mounted separately from the first power supply unit (191) and the second power supply unit (192), the first switching unit (193) and the second switching unit (194) may be embedded in the first power supply unit (191) and the second power supply unit (192).

[0047] In a case the first power supply unit (191) fails to operate normally, a driving power cannot be supplied to the switching unit (121) of the rectifier normally, such that the first switching unit (193) may select the second power supply unit (192). Furthermore, in a case the second power supply unit (192) fails to operate normally, a driving power cannot be supplied to the switching unit (141) of the inverter normally, such that the second switching unit (194) may select the first power supply unit (191).

[0048] As apparent from the foregoing, the control of the switching operation of the first switching unit (193) and the second switching unit (194) may be performed by control means embedded inside the first and second power supply units (191, 192) or by the controller (180).

[0049] The above-mentioned inverter-charger combined device for electric vehicles and the control method thereof according to the exemplary embodiments of the present disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiment set forth herein. Thus, it is intended that embodiment of the present disclosure may cover the modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalents. While particular features or aspects may have been disclosed with respect to several embodiments, such features or aspects may be selectively combined with one or more other features and/or aspects of other embodiments as may be desired.

Claims

1. An inverter-charger combined device (100) configured to charge a high voltage battery (150) in case of charging mode, and drive a 3-phase motor (130) by switching a power of the high voltage battery in case of operation mode, the device (100) comprising:

a rectifier (120) providing a power for charging the high voltage by rectifying an inputted AC power;

an inverter (140) receiving the AC power rectified by the rectifier (120) via the 3-phase motor (130) in case of charging mode to rectify the AC power to a DC power, and converting the DC power charged in the high voltage battery (150) in case of operation mode to drive the 3-phase motor (130); and

a power supply unit (190) supplying a power to drive the rectifier (120) and the inverter (140): characterized by further comprising:

a first switching unit (193); and

a second switching unit (194);

wherein, at default state, the power supply unit (190) includes a first power supply unit (191) for supplying a power to drive a switching unit (121) of the rectifier and a second power supply unit (192) for supplying a power to drive a switching unit (141) of the inverter, the default state corresponds to the state where both first and second power supplies operate normally,

wherein the first switching unit (193) selects the first power supply unit (191) or the second power supply unit (192) to supply a power to drive the switching unit (121) of the rectifier; and

wherein the second switching unit (194) selects the first power supply unit (191) or the second power supply unit (192) to supply a power to drive the switching unit (141) of the inverter, and

wherein the first switching unit (193) and the second switching unit (194) are configured to supply a power to the switching unit (121) of the rectifier and the switching unit (141) of the inverter from the second power supply unit (192) by selecting the second power supply unit in case of failure at the first power supply unit (191), and to supply a power to the switching unit (121) of the rectifier and the switching unit (141) of the inverter from the first power supply unit (191) by selecting the first power supply unit in case of failure at the second power supply unit (192).

2. The device of claim 1, further characterized by: a low voltage rectifier (170) for supplying a low voltage DC power to a load including a controller; and a controller (180) configured to control the rectifier (120), the inverter (140) and the low voltage rectifier (170).

3. The device of claim 1, characterized in that each of the first and second power supply units (191, 192) is configured to independently supply a power.

4. The device of claim 3, characterized in that the first switching unit (193) is embedded in the first power supply unit (191), and the second switching unit (194) is embedded in the second power supply unit (192).

5. The device of claim 3, characterized in that the first switching unit (193) and the second switching unit (194) are configured to select the first power supply unit (191) or the second power supply unit (192) in response to an operation state of the first power supply unit (191) or the second power supply unit (192).

6. A control method for an inverter-charger combined device (100) configured to charge a high voltage battery (150) in case of charging mode, and drive a 3-phase motor (130) by switching a power of the high voltage battery in case of operation mode, the method characterized by:

selecting a switch (121) of a rectifier for rectifying an AC power inputted for providing a power for charging the high voltage battery (150) in case of charging mode;

supplying a driving power supplied from a first power supply unit (191) to the switch (121) of the rectifier for rectifying the inputted AC power;

supplying the AC power rectified by the rectifier (120) to the 3-phase motor (130);

receiving by a inverter (140) having a switch (141), the switch being supplied with a driving power from a second power supply unit (192), the rectified AC power from the 3-phase motor (130) for rectification to a DC power, and

charging the high voltage battery (150) by the rectified DC power,

wherein, at default state, the first power supply unit (191) and the second power supply unit (192) are respectively connected to the switching unit (121) of the rectifier and to the switching unit (141) of the inverter for supply power, the default state corresponds to the state where both first and second power supplies operate normally,

wherein the first switching unit (193) selects the first power supply unit (191) or the second power supply unit (192) to supply a power to drive the switching unit (121) of the rectifier; and

wherein the second switching unit (194) selects the first power supply unit (191) or the second power supply unit (192) to supply a power to drive the switching unit (141) of the inverter, and

wherein the first switching unit (193) and the second switching unit (194) are configured to supply a power to the switching unit (121) of the rectifier and the switching unit (141) of the inverter from the second power supply unit (192) by selecting the second power supply unit in case of failure at the first power supply unit (191), and to supply a power to the switching unit (121) of the rectifier and the switching unit (141) of the inverter from the first power supply unit (191) by selecting the first power supply unit in case of failure at the second power supply unit (192).

7. A control method for an inverter-charger combined device (100) configured to charge a high voltage battery (150) in case of charging mode, and drive a 3-phase motor (130) by switching a power of the high voltage battery in case of operation mode, the method characterized by:

disconnecting a connection between the rectifier (120) supplying a rectified AC power to the 3-phase motor (130) and the 3-phase motor (130) by controlling a switch (121) of the rectifier being supplied with a driving power from a first power supply unit (191);

selecting a switch (141) of an inverter (140) supplying a power to drive the 3-phase motor (130) from the charged high voltage battery (150), the switch (141) of the inverter being supplied with a driving power from a second power supply unit (192) in case of operation mode;

supplying a DC power charged in the high voltage battery to the switch (141) of the inverter; and

driving the 3-phase motor (130) by converting the DC power to a 3-phase AC power

wherein, at default state, the first power supply unit (191) and the second power supply unit (192) are respectively connected to the switching unit (121) of the rectifier and to the switching unit (141) of the inverter for supply power, the default state corresponds to the state where both first and second power supplies operate normally,

wherein the first switching unit (193) selects the first power supply unit (191) or the second power supply unit (192) to supply a power to drive the switching unit (121) of the rectifier; and

wherein the second switching unit (194) selects the first power supply unit (191) or the second power supply unit (192) to supply a power to drive the switching unit (141) of the inverter, and

wherein the first switching unit (193) and the second switching unit (194) are configured to supply a power to the switching unit (121) of the rectifier and the switching unit (141) of the inverter from the second power supply unit (192) by selecting the second power supply unit in case of failure at the first power supply unit (191), and to supply a power to the switching unit (121) of the rectifier and the switching unit (141) of the inverter from the first power supply unit (191) by selecting the first power supply unit in case of failure at the second power supply unit (192).

Ansprüche

1. Kombinierte Vorrichtung (100) aus Wechselrichter und Ladegerät, die konfiguriert ist, im Falle einer Ladebetriebsart einen Hochspannungsakkumulator (150) zu laden und im Falle einer Arbeitsbetriebsart einen Dreiphasenmotor (130) durch Schalten einer Leistung des Hochspannungsakkumulators anzutreiben, wobei die Vorrichtung (100) Folgendes umfasst:

einen Gleichrichter (120), der eine Leistung zum Laden der Hochspannung durch Gleichrichten einer gelieferten Wechselstromleistung bereitstellt;

einen Wechselrichter (140), der im Falle der Ladebetriebsart die Wechselstromleistung, die durch den Gleichrichter (120) gleichgerichtet worden ist, über den Dreiphasenmotor (130) empfängt, um die Wechselstromleistung in eine Gleichstromleistung gleichzurichten, und der im Falle der Arbeitsbetriebsart die Gleichstromleistung, die in den Hochspannungsakkumulator (150) geladen worden ist, umwandelt, um den Dreiphasenmotor (130) anzutreiben; und

eine Leistungsversorgungseinheit (190), die eine Leistung liefert, um den Gleichrichter (120) und den Wechselrichter (140) anzutreiben; dadurch gekennzeichnet, dass sie ferner Folgendes umfasst:

eine erste Schalteinheit (193); und

eine zweite Schalteinheit (194);

wobei die Leistungsversorgungseinheit (190) in einem Standardzustand eine erste Leistungsversorgungseinheit (191) zum Liefern einer Leistung, um eine Schalteinheit (121) des Gleichrichters anzutreiben, und eine zweite Leistungsversorgungseinheit (192) zum Liefern einer Leistung, um eine Schalteinheit (141) des Wechselrichters anzutreiben, enthält, wobei der Standardzustand dem Zustand entspricht, in dem sowohl die erste als auch die zweite Leistungsversorgung normal arbeiten,

wobei die erste Schalteinheit (193) die erste Leistungsversorgungseinheit (191) oder die zweite Leistungsversorgungseinheit (192) auswählt, um eine Leistung zu liefern, um die Schalteinheit (121) des Gleichrichters anzutreiben; und

wobei die zweite Schalteinheit (194) die erste Leistungsversorgungseinheit (191) oder die zweite Leistungsversorgungseinheit (192) auswählt, um eine Leistung zu liefern, um die Schalteinheit (141) des Wechselrichters anzutreiben, und

wobei die erste Schalteinheit (193) und die zweite Schalteinheit (194) konfiguriert sind, eine Leistung an die Schalteinheit (121) des Gleichrichters und die Schalteinheit (141) des Wechselrichters von der zweiten Leistungsversorgungseinheit (192) durch Auswählen der zweiten Leistungsversorgungseinheit im Falle eines Ausfalls bei der ersten Leistungsversorgungseinheit (191) zu liefern und eine Leistung an die Schalteinheit (121) des Gleichrichters und die Schalteinheit (141) des Wechselrichters von der ersten Leistungsversorgungseinheit (191) durch Auswählen der ersten Leistungsversorgungseinheit im Falle eines Ausfalls bei der zweiten Leistungsversorgungseinheit (192) zu liefern.

2. Vorrichtung nach Anspruch 1, die ferner gekennzeichnet ist durch: einen Niederspannungsgleichrichter (170) zum Liefern einer Niederspannungs-Gleichstromleistung an eine Last, die eine Steuereinheit enthält; und eine Steuereinheit (180), die konfiguriert ist, den Gleichrichter (120), den Wechselrichter (140) und den Niederspannungsgleichrichter (170) zu steuern.

3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass jede der ersten und der zweiten Leistungsversorgungseinheit (191, 192) konfiguriert ist, unabhängig eine Leistung zu liefern.

4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die erste Schalteinheit (193) in die erste Leistungsversorgungseinheit (191) eingebettet ist und die zweite Schalteinheit (194) in die zweite Leistungsversorgungseinheit (192) eingebettet ist.

5. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die erste Schalteinheit (193) und die zweite Schalteinheit (194) konfiguriert sind, die erste Leistungsversorgungseinheit (191) oder die zweite Leistungsversorgungseinheit (192) als Reaktion auf einen Betriebszustand der ersten Leistungsversorgungseinheit (191) oder der zweiten Leistungsversorgungseinheit (192) auszuwählen.

6. Steuerverfahren für eine kombinierte Vorrichtung (100) aus Wechselrichter und Ladegerät, die konfiguriert ist, einen Hochspannungsakkumulator (150) im Falle einer Ladebetriebsart zu laden und einen Dreiphasenmotor (130) durch Schalten einer Leistung des Hochspannungsakkumulators im Falle einer Arbeitsbetriebsart anzutreiben, wobei das Verfahren gekennzeichnet ist durch:

Auswählen eines Schalters (121) eines Gleichrichters zum Gleichrichten einer Wechselstromleistung, die zum Bereitstellen einer Leistung zum Laden des Hochspannungsakkumulators (150) im Falle einer Ladebetriebsart zugeführt worden ist,

Liefern einer Antriebsleistung, die von einer ersten Leistungsversorgungseinheit (191) an den Schalter (121) des Gleichrichters zum Gleichrichten der zugeführten Wechselstromleistung geliefert worden ist;

Liefern der Wechselstromleistung, die durch den Gleichrichter (120) gleichgerichtet worden ist, an den Dreiphasenmotor (130);

Empfangen der gleichgerichteten Wechselstromleistung von dem Dreiphasenmotor (130) zum Gleichrichten in eine Gleichstromleistung durch einen Wechselrichter (140), der einen Schalter (141) besitzt, wobei der Schalter mit einer Antriebsleistung von einer zweiten Leistungsversorgungseinheit (192) versorgt wird, und

Laden des Hochspannungsakkumulators (150) durch die gleichgerichtete Gleichstromleistung,

wobei die erste Leistungsversorgungseinheit (191) und die zweite Leistungsversorgungseinheit (192) in einem Standardzustand mit der Schalteinheit (121) des Gleichrichters und der Schalteinheit (141) des Wechselrichters für Versorgungsleistung jeweils verbunden sind, wobei der Standardzustand dem Zustand entspricht, in dem sowohl die erste, als auch die zweite Leistungsversorgung normal arbeiten,

wobei die erste Schalteinheit (193) die erste Leistungsversorgungseinheit (191) oder die zweite Leistungsversorgungseinheit (192) auswählt, um eine Leistung zu liefern, um die Schalteinheit (121) des Gleichrichters anzutreiben; und

wobei die zweite Schalteinheit (194) die erste Leistungsversorgungseinheit (191) oder die zweite Leistungsversorgungseinheit (192) auswählt, um eine Leistung zu liefern, um die Schalteinheit (141) des Wechselrichters anzutreiben, und

wobei die erste Schalteinheit (193) und die zweite Schalteinheit (194) konfiguriert sind, eine Leistung an die Schalteinheit (121) des Gleichrichters und die Schalteinheit (141) des Wechselrichters von der zweiten Leistungsversorgungseinheit (192) durch Auswählen der zweiten Leistungsversorgungseinheit im Falle eines Ausfalls bei der ersten Leistungsversorgungseinheit (191) zu liefern und eine Leistung an die Schalteinheit (121) des Gleichrichters und die Schalteinheit (141) des Wechselrichters von der ersten Leistungsversorgungseinheit (191) durch Auswählen der ersten Leistungsversorgungseinheit im Falle eines Ausfalls bei der zweiten Leistungsversorgungseinheit (192) zu liefern.

7. Steuerverfahren für eine kombinierte Vorrichtung (100) aus Wechselrichter und Ladegerät, die konfiguriert ist, einen Hochspannungsakkumulator (150) im Falle einer Ladebetriebsart zu laden und einen Dreiphasenmotor (130) durch Schalten einer Leistung des Hochspannungsakkumulators im Falle einer Arbeitsbetriebsart anzutreiben, wobei das Verfahren gekennzeichnet ist durch:

Trennen einer Verbindung zwischen dem Gleichrichter (120), der eine gleichgerichtete Wechselstromleistung an den Dreiphasenmotor (130) liefert, und dem Dreiphasenmotor (130) durch Steuern eines Schalters (121) des Gleichrichters, der mit einer Antriebsleistung von einer ersten Leistungsversorgungseinheit (191) zugeführt wird;

Auswählen eines Schalters (141) eines Wechselrichters (140), der eine Leistung von dem geladenen Hochspannungsakkumulator (150) liefert, um den Dreiphasenmotor (130) anzutreiben, wobei der Schalter (141) des Wechselrichters im Falle einer Arbeitsbetriebsart mit einer Antriebsleistung von einer zweiten Leistungsversorgungseinheit (192) versorgt wird;

Liefern einer Gleichstromleistung, die in den Hochspannungsakkumulator geladen worden ist, an den Schalter (141) des Wechselrichters; und

Antreiben des Dreiphasenmotors (130) durch Umwandeln der Gleichstromleistung in eine Dreiphasen-Wechselstromleistung,

wobei die erste Leistungsversorgungseinheit (191) und die zweite Leistungsversorgungseinheit (192) in einem Standardzustand jeweils mit der Schalteinheit (121) des Gleichrichters und der Schalteinheit (141) des Wechselrichters für Versorgungsleistung verbunden sind, wobei der Standardzustand dem Zustand entspricht, in dem sowohl die erste als auch die zweite Leistungsversorgung normal arbeiten,

wobei die erste Schalteinheit (193) die erste Leistungsversorgungseinheit (191) oder die zweite Leistungsversorgungseinheit (192) auswählt, um eine Leistung zu liefern, um die Schalteinheit (121) des Gleichrichters anzutreiben; und

wobei die zweite Schalteinheit (194) die erste Leistungsversorgungseinheit (191) oder die zweite Leistungsversorgungseinheit (192) auswählt, um eine Leistung zu liefern, um die Schalteinheit (141) des Wechselrichters anzutreiben, und

wobei die erste Schalteinheit (193) und die zweite Schalteinheit (194) konfiguriert sind, eine Leistung an die Schalteinheit (121) des Gleichrichters und die Schalteinheit (141) des Wechselrichters von der zweiten Leistungsversorgungseinheit (192) durch Auswählen der zweiten Leistungsversorgungseinheit im Falle eines Ausfalls bei der ersten Leistungsversorgungseinheit (191) zu liefern und eine Leistung an die Schalteinheit (121) des Gleichrichters und die Schalteinheit (141) des Wechselrichters von der ersten Leistungsversorgungseinheit (191) durch Auswählen der ersten Leistungsversorgungseinheit im Falle eines Ausfalls bei der zweiten Leistungsversorgungseinheit (192) zu liefern.

Revendications

1. Dispositif (100) combiné onduleur-chargeur configuré pour, dans un mode de charge, charger une batterie haute tension (150) et, dans un mode d'exploitation, exciter un moteur triphasé (130) par commutation d'une puissance de la batterie haute tension, le dispositif (100) comprenant :

un redresseur (120) fournissant une puissance de charge de la haute tension par redressement d'une puissance c.a. appliquée en entrée ;

un onduleur (140) recevant la puissance c.a. redressée par le redresseur (120) via le moteur triphasé (130) dans le mode de charge dans le but de redresser la puissance c.a. en une puissance c.c., et convertissant la puissance c.c. chargée dans la batterie haute tension (150) dans le mode d'exploitation dans le but d'exciter le moteur triphasé (130) ; et

une unité d'alimentation (190) fournissant une puissance servant à exciter le redresseur (120) et l'onduleur (140) ; caractérisé en ce qu'il comprend en outre :

une première unité de commutation (193) ; et

une deuxième unité de commutation (194) ;

dans lequel, dans un état par défaut, l'unité d'alimentation (190) comporte une première unité d'alimentation (191) destinée à fournir une puissance servant à exciter une unité de commutation (121) du redresseur et une deuxième unité d'alimentation (192) destinée à fournir une puissance servant à exciter une unité de commutation (141) de l'onduleur, l'état par défaut correspondant à l'état dans lequel les première et deuxième alimentations fonctionnent toutes deux normalement,

dans lequel la première unité de commutation (193) sélectionne la première unité d'alimentation (191) ou la deuxième unité d'alimentation (192) pour fournir une puissance servant à exciter l'unité de commutation (121) du redresseur ; et

dans lequel la deuxième unité de commutation (194) sélectionne la première unité d'alimentation (191) ou la deuxième unité d'alimentation (192) pour fournir une puissance servant à exciter l'unité de commutation (141) de l'onduleur, et

dans lequel la première unité de commutation (193) et la deuxième unité de commutation (194) sont configurées pour fournir une puissance à l'unité de commutation (121) du redresseur et l'unité de commutation (141) de l'onduleur à partir de la deuxième unité d'alimentation (192) par sélection de la deuxième unité d'alimentation en cas de défaillance de la première unité d'alimentation (191), et pour fournir une puissance à l'unité de commutation (121) du redresseur et l'unité de commutation (141) de l'onduleur à partir de la première unité d'alimentation (191) par sélection de la première unité d'alimentation en cas de défaillance de la deuxième unité d'alimentation (192).

2. Dispositif selon la revendication 1, caractérisé en outre par : un redresseur basse tension (170) destiné à fournir une puissance c.c. basse tension à une charge incorporant une unité de commande ; et une unité de commande (180) configurée pour commander le redresseur (120), l'onduleur (140) et le redresseur basse tension (170).

3. Dispositif selon la revendication 1, caractérisé en ce que chacune des première et deuxième unités d'alimentation (191, 192) est configurée pour fournir une puissance de manière indépendante.

4. Dispositif selon la revendication 3, caractérisé en ce que la première unité de commutation (193) est incorporée dans la première unité d'alimentation (191), et la deuxième unité de commutation (194) est incorporée dans la deuxième unité d'alimentation (192).

5. Dispositif selon la revendication 3, caractérisé en ce que la première unité de commutation (193) et la deuxième unité de commutation (194) sont configurées pour sélectionner la première unité d'alimentation (191) ou la deuxième unité d'alimentation (192) en réponse à un état fonctionnel de la première unité d'alimentation (191) ou de la deuxième unité d'alimentation (192).

6. Procédé de commande pour un dispositif (100) combiné onduleur-chargeur configuré pour, dans un mode de charge, charger une batterie haute tension (150) et, dans un mode d'exploitation, exciter un moteur triphasé (130) par commutation d'une puissance de la batterie haute tension, le procédé étant caractérisé par les étapes consistant à :

sélectionner un commutateur (121) d'un redresseur destiné à redresser une puissance c.a. appliquée en entrée en vue de fournir une puissance de charge de la batterie haute tension (150) dans le mode de charge ;

fournir une puissance d'excitation fournie à partir d'une première unité d'alimentation (191) au commutateur (121) du redresseur en vue de redresser la puissance c.a. appliquée en entrée ;

fournir la puissance c.a. redressée par le redresseur (120) au moteur triphasé (130) ;

recevoir, par un onduleur (140) pourvu d'un commutateur (141), le commutateur recevant une puissance d'excitation à partir d'une deuxième unité d'alimentation (192), la puissance c.a. redressée à partir du moteur triphasé (130) en vue de son redressement en une puissance c.c., et

charger la batterie haute tension (150) par la puissance c.c. redressée,

dans lequel, dans un état par défaut, la première unité d'alimentation (191) et la deuxième unité d'alimentation (192) sont connectées respectivement à l'unité de commutation (121) du redresseur et à l'unité de commutation (141) de l'onduleur pour fournir une puissance, l'état par défaut correspondant à l'état dans lequel les première et deuxième alimentations fonctionnent toutes deux normalement,

dans lequel la première unité de commutation (193) sélectionne la première unité d'alimentation (191) ou la deuxième unité d'alimentation (192) pour fournir une puissance servant à exciter l'unité de commutation (121) du redresseur ; et

dans lequel la deuxième unité de commutation (194) sélectionne la première unité d'alimentation (191) ou la deuxième unité d'alimentation (192) pour fournir une puissance servant à exciter l'unité de commutation (141) de l'onduleur, et

dans lequel la première unité de commutation (193) et la deuxième unité de commutation (194) sont configurées pour fournir une puissance à l'unité de commutation (121) du redresseur et l'unité de commutation (141) de l'onduleur à partir de la deuxième unité d'alimentation (192) par sélection de la deuxième unité d'alimentation en cas de défaillance de la première unité d'alimentation (191), et pour fournir une puissance à l'unité de commutation (121) du redresseur et l'unité de commutation (141) de l'onduleur à partir de la première unité d'alimentation (191) par sélection de la première unité d'alimentation en cas de défaillance de la deuxième unité d'alimentation (192).

7. Procédé de commande pour un dispositif (100) combiné onduleur-chargeur configuré pour, dans un mode de charge, charger une batterie haute tension (150) et, dans un mode d'exploitation, exciter un moteur triphasé (130) par commutation d'une puissance de la batterie haute tension, le procédé étant caractérisé par les étapes consistant à :

déconnecter une connexion entre le redresseur (120) fournissant une puissance c.a. redressée au moteur triphasé (130) et le moteur triphasé (130) par commande d'un commutateur (121) du redresseur recevant une puissance d'excitation à partir d'une première unité d'alimentation (191) ;

sélectionner un commutateur (141) d'un onduleur (140) fournissant une puissance servant à exciter le moteur triphasé (130) à partir de la batterie haute tension (150) chargée, le commutateur (141) de l'onduleur recevant une puissance d'excitation à partir d'une deuxième unité d'alimentation (192) dans le mode d'exploitation ;

fournir une puissance c.c. chargée dans la batterie haute tension au commutateur (141) de l'onduleur ; et

exciter le moteur triphasé (130) par conversion de la puissance c.c. en une puissance c.a. triphasée,

dans lequel, dans un état par défaut, la première unité d'alimentation (191) et la deuxième unité d'alimentation (192) sont connectées respectivement à l'unité de commutation (121) du redresseur et à l'unité de commutation (141) de l'onduleur pour fournir une puissance, l'état par défaut correspondant à l'état dans lequel les première et deuxième alimentations fonctionnent toutes deux normalement,

dans lequel la première unité de commutation (193) sélectionne la première unité d'alimentation (191) ou la deuxième unité d'alimentation (192) pour fournir une puissance servant à exciter l'unité de commutation (121) du redresseur ; et

dans lequel la deuxième unité de commutation (194) sélectionne la première unité d'alimentation (191) ou la deuxième unité d'alimentation (192) pour fournir une puissance servant à exciter l'unité de commutation (141) de l'onduleur, et

dans lequel la première unité de commutation (193) et la deuxième unité de commutation (194) sont configurées pour fournir une puissance à l'unité de commutation (121) du redresseur et l'unité de commutation (141) de l'onduleur à partir de la deuxième unité d'alimentation (192) par sélection de la deuxième unité d'alimentation en cas de défaillance de la première unité d'alimentation (191), et pour fournir une puissance à l'unité de commutation (121) du redresseur et l'unité de commutation (141) de l'onduleur à partir de la première unité d'alimentation (191) par sélection de la première unité d'alimentation en cas de défaillance de la deuxième unité d'alimentation (192).

Drawing