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发明公开
CN105915079A 一种基于自耦变压器的四象限电流源换流器 审中-实审

一种基于自耦变压器的四象限电流源换流器
摘要：
本发明提供了一种基于自耦变压器的四象限电流源换流器，包括：自耦变压器，交流电源，电感，第一三相整流桥、第二三相整流桥和直流谐波注入电路；其中，第一三相整流桥与第二三相整流并联；自耦变压器的输入端经电感与交流电源的输出端相连，其输出端与第一三相整流桥和第二三相整流桥的输入端相连，第一三相整流桥和第二三相整流桥的输出端与直流谐波注入电路相连。本发明主拓扑采用自耦变压器为基础，通过两组三相桥连接直流注入电路，通过控制直流电路的注入电流，对自耦变压器的输出电流进行调制，进而达到抑制谐波的目的。
摘要（英）：

The invention provides a four-quadrant current source converter based on an autotransformer. The four-quadrant current source converter comprises the autotransformer, an AC power source, an inductor, a first three-phase rectifier bridge, a second three-phase rectifier bridge and a DC harmonic injection circuit, wherein the first three-phase rectifier bridge is connected in parallel with the second three-phase rectifier bridge; and the input end of the autotransformer is connected with the output end of the AC power source via the inductor, the output end of the autotransformer is connected with the input end of the first three-phase rectifier bridge and the input end of the second three-phase rectifier bridge, and the output end of the first three-phase rectifier bridge and the output end of the second three-phase rectifier bridge are connected with the DC harmonic injection circuit. According to the invention, a main topology employs the autotransformer as a base, the DC injection circuit is connected through the two three-phase bridges, through controlling injection currents of a DC circuit, output currents of the autotransformer are modulated, and thus the purpose of inhibiting harmonic waves is realized.

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