主动电力滤波器高性能补偿控制策略分析

Active power filter control strategy of high-performance compensation

天津海河开启桥是一座集机械、液压、电气智能控制及监控、景观与一体的综合性桥梁,它开辟了我国桥梁史的先河,其技术在亚洲乃至世界上都是较先进的。由于该桥供电部分存在非线负载,由此产生大量谐波电流及无功电流,需要主动滤波器滤除谐波,提高功率因数。本文对主动电力滤波器传统电流环PI控制器进行了详细的理论分析,指出了检测负载侧谐波电流的局限性,提出了一种电源侧电流前馈补偿的控制器,克服了检测负载侧谐波电流时传统PI控制器的缺陷,即使负载谐波电流高于主动电力滤波器的容量,也能够无静差输出,理论分析和仿真验证了此种新型控制策略的正确性和有效性。

Tianjin Haihe River bascule Bridge is an set of mechanical,hydraulic,electrical intelligent control and monitoring, landscape and integrated bridge,which opened the first of its kind of bridge history,its technology in Asia and the world are more advanced.As part of the bridge there is non-linear load power supply,the resulting large harmonic current and reactive current,harmonic filter requires the filter to improve power factor.In this paper,the traditional active power filter current loop PI controller,a detailed theoretical analysis,that the test load side harmonic current limitations, a power supply side of the current feed-forward compensation of the controller,to overcome a side load detection When harmonic current deficiencies of traditional PI controller,even if the load harmonic current capacity higher than the active power filter,and can no static error output,theoretical analysis and simulation prove the correctness of this new control strategy and effectiveness.