POWER CONVERSION DEVICE, MOTOR CONTROL SYSTEM, AND DIAGNOSIS METHOD FOR POWER CONVERSION DEVICE

A temperature abnormality of the power module is accurately detected. A power conversion device including a power semiconductor module with a switching element, includes: a gate driver circuit configured to drive a switching element and transmitting a response signal upon a switching operation of th...

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Bibliographische Detailangaben
Hauptverfasser:	SUZUKI, Hiroshi, OGAWA, Takashi, TANI, Kazuki, KIMURA, Yoshinobu, SAKANO, Junichi
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	A temperature abnormality of the power module is accurately detected. A power conversion device including a power semiconductor module with a switching element, includes: a gate driver circuit configured to drive a switching element and transmitting a response signal upon a switching operation of the switching element; a control unit device configured to output to a gate driver circuit an instruction signal for switching; a temperature detection unit configured to calculate a bonding temperature of the switching element based on a response signal to the instruction signal; and a calculation unit configured to determine a state of a power semiconductor module according to a bonding temperature calculated by the temperature detection unit and the response signal.