A circuit and method for realizing three-phase inverter power module aging experiment

A technology for three-phase inverters and power modules, which is applied in the field of aging experiments, can solve the problems of difficult prediction or evaluation of the service life of IGBT modules, the inability to realize aging experiments, and the inability to realize aging experiments of power devices, so as to achieve universal adaptability, The effect of simple aging experiment process
CN111781532BActive Publication Date: 2021-06-08BEIJING JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING JIAOTONG UNIV
Publication Date
2021-06-08

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Abstract

The invention relates to a circuit and a method for implementing aging experiments of three-phase inverter power modules. The circuit includes: a voltage sensor on the three-phase AC input side, a current sensor on the three-phase AC input side, and a pre-charging contactor on the three-phase AC input side , three-phase AC input side line contactor, three-phase voltage regulator, AC side reactor, DC contactor, DC pre-charging resistor, DC discharging resistor, discharging contactor, DC side voltage sensor, DC side current sensor, several accompanying Test transformer and several accompanying test modules. The invention can realize arbitrary AC side voltage characteristics by controlling the DUT, and can simulate arbitrary DUT AC side fundamental current characteristics without using corresponding actual AC side equipment by controlling the amplitude and power factor of the DUT AC current through the accompanying test module , so the aging experiment process is simple and generally adaptable.
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Description

technical field

[0001] The invention relates to a circuit and a method for realizing an aging experiment of a three-phase inverter power module under the actual load working condition. Background technique

[0002] The three-phase inverter power module is composed of heat sink and thermal grease, power busbar, power switching device and its driving components, DC side support capacitor, voltage and current sensor and other components. As far as the aging experiment of the power switching device of the three-phase inverter power module is concerned, the main problem is that on the one hand, it is impossible to realize the aging experiment of the power device under the actual topology or the physical composition of the three-phase inverter power module; On the one hand, aging experiments under actual load or actual working conditions cannot be realized. Therefore, in the current aging experiments of power devices, the aging experiment results for individual power switching de...

Claims

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