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
Active Publication Date: 2021-06-08
BEIJING JIAOTONG UNIV
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Problems solved by technology
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, it is impossible to achieve aging experiments under actual load or actual working conditions
Therefore, in the current aging experiments of power devices, the aging experiment results for individual power switching devices (IGBT modules are the most common) are difficult to apply to the actual topology, the physical composition of the actual three-phase inverter power module, or the actual load. The service life evaluation or service life prediction of the IGBT module under working conditions, so the service life of the IGBT module under the current actual topology, the actual three-phase inverter power module physical composition or the actual load condition is difficult to pass the existing Accurate prediction or evaluation of aging test results
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Embodiment Construction
[0053] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0054] This patent proposes a circuit and method for realizing aging experiments of three-phase inverter power modules under actual load conditions. In the circuit, the AC side load of the tested three-phase inverter power module is simulated through the accompanying test converter, and the simulated AC side load can follow the AC current amplitude of the three-phase inverter power module under the actual load condition. Therefore, the aging experiment of the three-phase inverter power module in the actual application scene can be realized with high precision. In addition, the accompanying test converter adopts the form of multiple driving series and parallel connection of multiple accompanying test modules. On the one hand, the output voltage level of the accompanying test converter can be increased by connecting the test modules in series, so that it can su...
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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.
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...
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IPC IPC(8): G01R31/42
CPCG01R31/42
Inventor 王磊
Owner BEIJING JIAOTONG UNIV
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