注入式混合型有源电力滤波器能量倒灌及防治措施

Energy Pour Backward and Prevention of Injection Type Hybrid Active Power Filter

能量倒灌严重的威胁着注入式混合型有源电力滤波器(injection type hybrid activepower filter,IHAPF)的安全运行,但是目前对这方面的研究很少。该文在分析注入式混合型有源电力滤波器的基础上着重探讨了能量倒灌的起因及危害,建立了能量倒灌的等效电路,得出基波谐振支路对谐波电压分压过大是造成能量倒灌的根本原因;并进一步提出了对电网谐波电流与接入点谐波电压复合控制以及注入支路的优化设计两种防治能量倒灌的方案,依此为某铜箔厂研制了注入式混合型有源电力滤波装置。仿真及现场运行状况验证了理论分析的正确性。

Safe employment of the injection type hybrid active power filter （IHAPF） is threatened badly by the energy pour backward, however few papers focused on it. Based on the analysis of 1HAPF, this paper discussed the origin and harm of energy pours backward. The root, that the harmonic voltage endured by the fundamental resonance circuit is too large, of energy pour backward is educed and the equivalent circuit is set up. The complex control based on the design of PCC voltage and supply harmonic current and optimization design of injection part are put forward as two kinds of method for the prevention of energy pour backward. And then IHAPF equipment is devised for a copper plant. The feasibility of the theoretic analysis is validated by the simulation and application results from the field operation.