一种谐波与无功功率补偿的新方法

提出了一种电力系统谐波与无功功率的综合补偿系统。该系统由两组并联的电压源逆变器组成，其中带Ｌ－Ｃ并联谐振回路的小容量逆变器用来补偿谐波，而另一组低开关频率逆变器补偿基波无功功率。针对谐波与无功功率的大容量补偿，该系统具有低成本和低损耗的特点。文中描述了该系统的结构，分析了其工作原理和控制策略，并通过计算机仿真对理论分析进行了验证。

A New Approach for Harmonic Suppression and Reactive Power Compensation in Power System

A new approach for harmonic suppression and reactive power compensation of power systems is presented in this paper. The scheme employs two voltage-source inverters connected in parallel. The high-frequency harmonic in the load is eliminated by a low power rating inverter connected with an L-C shunt resonance circuit tuned to the fundamental frequency, while the fundamental frequency reactive power is compesated by a lower switching frequency inverter. This approach is expected to result in a significant reduction in the cost and the losses associated with active compensators for high-power applications. The basic principle of operation, circuit topology and control strategy for harmonic and reactive power compensation are discussed. Computer simulation results are presented to demonstrate the performance of the proposed system.