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对一种大容量复合电流质量调节装置进行了深入研究,基于模块化的思想,提出一种新型的主电路拓扑结构,主电路由基波补偿模块和谐波补偿模块组成,基波模块由多个H桥组成链式结构,用以提高基波补偿容量,减小输出电压谐波含量;谐波模块由单个H桥构成,其交流侧跨接在基波连接电感两端,可以减小谐波模块的电压等级和容量。给出了装置的控制策略,该控制策略实现了无功功率和谐波电流的解耦控制和补偿。最后通过仿真与实验结果证明了提出的主电路结构及控制方法的有效性。
Based on the idea of modularization, a new type of main circuit topology is proposed. The main circuit consists of a fundamental compensation module and a harmonic compensation module. The fundamental module consists of more A H-bridge chain structure to improve the fundamental compensation capacity, reduce the output voltage harmonic content; harmonic module consists of a single H-bridge, the AC side across the fundamental wave inductance connected across the inductor can reduce the harmonic Wave module voltage level and capacity. The control strategy of the device is given. The control strategy realizes the decoupling control and compensation of reactive power and harmonic current. Finally, the simulation and experimental results show that the proposed main circuit structure and control methods are effective.