多补偿绕组多调谐滤波器的研究

Study on Multi-tuned Filter with Multiple Compensation Windings

为了解决自动连续多调谐滤波器的大容量问题,提出一种采用多个补偿绕组结构的有源电抗器。其可用于检测各次谐波电流,并用可控电流源一一产生相对应的补偿电流注入各个补偿绕组。当有源电抗器一、二次侧满足主磁通为零时,滤波器支路对所调谐的谐波呈现低阻通路,从而来减少流入电源侧的谐波含量。文中设计了一种基于电力电子技术的开关型功率放大器作为补偿电流放大装置,建立了多补偿绕组多调谐滤波器的仿真模型,开发了实验系统,仿真和实验结果共同验证了多补偿绕组多调谐滤波器的可行性。

In order to design a continuous multi-tuning filter with large capacity, an active reactor with multiple compensation windings is proposed. It can detect each harmonic current and generate compensating current with controlled current source, then the current is injected into the compensation winding. When the primary and secondary magnetic flux of the active power reactor are zero, the branches of active power filter will present low-impedance to the tuned harmonic currents, and the harmonic currents which inject into the main sides will decrease. A switching type power amplifier based on power electronic techniques is used to amplify the compensation current, the simulation model of the multi-tuned filter with multiple compensation windings is established, and the experimental system is developed. The simulation and experiment results verify the feasibility of multi-tuned filter with multicompensation windings.