EP 4205272 A1 20230705 - BULK CAPACITOR HEATING CIRCUITS IN ELECTRICAL POWER CONVERTERS
Title (en)
BULK CAPACITOR HEATING CIRCUITS IN ELECTRICAL POWER CONVERTERS
Title (de)
MASSENKONDENSATORERWÄRMUNGSSCHALTUNGEN IN ELEKTRISCHEN STROMWANDLERN
Title (fr)
CIRCUITS DE CHAUFFE DE CONDENSATEUR DE MASSE DE CONVERTISSEURS DE COURANT ÉLECTRIQUE
Publication
Application
Priority
CN 2020111051 W 20200825
Abstract (en)
[origin: WO2022040908A1] An electrical power converter includes a power circuit having a bulk capacitor, an auxiliary circuit coupled to the power circuit for heating the bulk capacitor, and a control circuit coupled to the auxiliary circuit. The auxiliary circuit includes a switching device. The control circuit is configured to generate a control signal for controlling the switching device to allow the bulk capacitor to discharge and charge causing a temperature associated with the bulk capacitor to increase and a value of an equivalent series resistance associated with the bulk capacitor to decrease. Other example auxiliary circuits and electrical power converters are also disclosed.
IPC 8 full level
H02M 1/32 (2007.01)
CPC (source: EP)
H02M 1/14 (2013.01); H02M 1/327 (2021.05); H02M 1/36 (2013.01); H02M 1/4225 (2013.01); H02M 3/33538 (2013.01); Y02B 70/10 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022040908 A1 20220303; EP 4205272 A1 20230705; EP 4205272 A4 20240529; JP 2023539843 A 20230920; TW 202209798 A 20220301; TW I765774 B 20220521
DOCDB simple family (application)
CN 2020111051 W 20200825; EP 20950583 A 20200825; JP 2023512660 A 20200825; TW 110125471 A 20210712