パワーモジュールの半導体の接続部を監視する方法及び装置

Japanese Patent JP7146110

B2

The present invention concerns a method and device for monitoring the connections of semiconductors of a power module, the semiconductors being connected in parallel and providing voltage and current to a load according to a pulse width modulation. The invention:- determines if the duration of the conducting state of the semiconductors in a first cycle of the pulse width modulation is upper than a predetermined duration,- measures, during the conducting state of the semiconductors at a second cycle, the voltage provided to the load,- sequentially disables the conduction of each semiconductor during a part of the duration of the conducting state of the semiconductors in a third cycle and measures the voltage provided to the load,- determines the differences between the voltage measured during the second cycle and each voltage measured during the third cycle,- orders the differences according to their value,- checks if the determined order is identical to an order stored in a memory of the device and determines that one connection of one semiconductor is deteriorated if the order is changed.

JP7359298	power converter
JPH05211782	INVERTER DRIVING CIRCUIT

Evan Chuk, Jeffrey
Brandero, Giulio
Morov, Stefan

JP2021552089A

October 03, 2022

January 20, 2020

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MITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.

H02M1/00; H02M7/48

JP2019030081A
JP2009025044A

WO2017199303A1

Michiharu Soga
Kajinami order
Kazuhiro Oya
Shunichi Ueda
Junichiro Yoshida

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