混合型有源电力滤波器与并联电容器组联合补偿技术研究

对于大容量谐波与无功功率补偿,提出了采用混合型有源电力滤波器以及混合型滤波器与电容器组或无源滤波器并联补偿的方式,分析了并联运行时混合型滤波器与电容器组或无源滤波器之间相互配合进行谐波补偿的问题,提出了采用负载与系统电流检测适当结合的方式以改善谐波补偿效果的方法.计算机仿真结果验证了理论分析的正确性.最后,给出了混合型滤波器的挂网运行结果,表明了所提方法的正确性与实用性.

Shunt Hybrid Filter for Harmonic Suppression and Reactive Power Compensation

For harmonic suppression and reactive power compensation of high power nonlinear load, methods of using shunt hybrid active power filter and parallel operation of hybrid filter with capacitors (or passive power filter) are proposed. The coordination of the different devices are analyzed and a harmonic current detection method using the combination of load current and the mains current is developed for improving the performance of harmonic compensation and the resonance problem. The calculation results with the proposed methods are reasonable agreement with the simulation data. Finally, results from an industry prototype are presented to verify the validity and effectiveness of hybrid filter.