The invention discloses a three-phase rectifier, and the rectifier comprises three-phase rectification circuits, wherein each phase rectification circuit comprises an input filter (La) and a rectification unit which are connected in series, the rectification unit comprises six power switch tubes and two power diodes, and the three-phase rectification circuits share four capacitors. The three-phaserectifier has the multi-level characteristic, the voltage stress of the power semiconductor device can be kept within a reasonable range, the total harmonic distortion rate of the input current can be reduced, and the electric energy quality of the alternating current input side is improved.
本申请公开了一种三相整流器,其包括三相整流电路,每一相整流电路包括串联连接的输入滤波器(L)和整流单元,所述整流单元包括六个功率开关管和两个功率二极管,三相整流电路共用四个电容器。本发明三相整流器具有多电平特性,既可以保证功率半导体器件的电压应力保持在合理范围内,又可以降低输入电流的总谐波畸变率,改善交流输入侧电能质量。
Three-phase rectifier
一种三相整流器
2020-05-08
Patent
Electronic Resource
Chinese
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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