EP 2008358 A1 20081231 - CONTROL SYSTEM FOR AN ELECTRIC MOTOR
Title (en)
CONTROL SYSTEM FOR AN ELECTRIC MOTOR
Title (de)
ANSTEUERSYSTEM FÜR EINE ELEKTRISCHE MASCHINE
Title (fr)
SYSTÈME DE COMMANDE POUR MACHINE ÉLECTRIQUE
Publication
Application
Priority
- EP 2007003348 W 20070417
- DE 102006018053 A 20060419
Abstract (en)
[origin: WO2007121889A1] The invention relates to a control system for a permanent-field electric motor (1) and corresponding method. When a function computer (3) and/or a monitoring computer (4) recognises an error in the control system, the electric motor (1) is switched off. The aim of the invention is to reduce the braking torque of a switched-off and still rotating electric motor (1). According to the invention said aim is achieved, wherein a three-phase short-circuit of the output stage (2) is carried out to switch off the electric motor (1) when the rotational speed D1 is not below a fixable threshold value GR1 or a voltage U_DC for the output stage (2) exceeds a threshold value Umax and, otherwise, when the rotational speed D1 is below the fixable threshold GRl and a voltage U_DC for the output stage (2) does not exceed a threshold Umax, all breakers (2ol, 2o2, 2o3, 2ul, 2u2, 2u3) in the output stage (2) are opened to switch off the electric motor (1).
IPC 8 full level
H02P 3/22 (2006.01); H02P 6/24 (2006.01); H02P 29/02 (2006.01)
CPC (source: EP US)
B60L 3/0061 (2013.01 - EP US); H02P 3/22 (2013.01 - EP US); H02P 6/24 (2013.01 - EP US); H02P 29/0241 (2016.02 - EP US); Y02T 10/64 (2013.01 - EP US)
Citation (search report)
See references of WO 2007121889A1
Designated contracting state (EPC)
DE FR GB IT SE
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DE 102006018053 A1 20071031; CN 101427456 A 20090506; CN 101427456 B 20120125; EP 2008358 A1 20081231; JP 2009535001 A 20090924; JP 5281567 B2 20130904; US 2009099703 A1 20090416; US 8054014 B2 20111108; WO 2007121889 A1 20071101
DOCDB simple family (application)
DE 102006018053 A 20060419; CN 200780014067 A 20070417; EP 07724286 A 20070417; EP 2007003348 W 20070417; JP 2009505765 A 20070417; US 28832708 A 20081017