山西电力
山西電力
산서전력
SHANXI ELECTRIC POWER
2013年
5期
35-38
,共4页
有源电力滤波器%检测精度%动态响应速度%平均值算法%构造对称电路法
有源電力濾波器%檢測精度%動態響應速度%平均值算法%構造對稱電路法
유원전력려파기%검측정도%동태향응속도%평균치산법%구조대칭전로법
active power filter%detection accuracy%dynamic response speed%average algorithm%symmetrical circuit construction method
在三相有源电力滤波器的谐波检测环节，针对常用的ip-iq谐波电流检测方法因采用数字低通滤波器和PLL (Phase Locked Loop)锁相环节而造成的检测误差，从检测精度和动态响应速度入手，对平均值算法、构造对称电路法这两种改进的谐波电流检测算法进行对比分析。仿真结果表明在三相电路对称时，采用平均值算法不仅可以保证检测的精确性，而且其动态响应速度更加优越，在三相电路不对称时构造对称电路法具有更高的精确性。
在三相有源電力濾波器的諧波檢測環節，針對常用的ip-iq諧波電流檢測方法因採用數字低通濾波器和PLL (Phase Locked Loop)鎖相環節而造成的檢測誤差，從檢測精度和動態響應速度入手，對平均值算法、構造對稱電路法這兩種改進的諧波電流檢測算法進行對比分析。倣真結果錶明在三相電路對稱時，採用平均值算法不僅可以保證檢測的精確性，而且其動態響應速度更加優越，在三相電路不對稱時構造對稱電路法具有更高的精確性。
재삼상유원전력려파기적해파검측배절，침대상용적ip-iq해파전류검측방법인채용수자저통려파기화PLL (Phase Locked Loop)쇄상배절이조성적검측오차，종검측정도화동태향응속도입수，대평균치산법、구조대칭전로법저량충개진적해파전류검측산법진행대비분석。방진결과표명재삼상전로대칭시，채용평균치산법불부가이보증검측적정학성，이차기동태향응속도경가우월，재삼상전로불대칭시구조대칭전로법구유경고적정학성。
In the harmonic detection of three-phase active power filter, the normally used ip-iq current detection method tends to bring about detection error caused by digital low-pass filter and phase locked loop. Therefore, in view of detection accuracy and dynamic response rate,two improved harmonic current detection methods including average algorithm and symmetrical circuit construction method are compared and analysed. The simulation results show that when the three-phase circuit is symmetrical,average algorithm can not only ensure detection accuracy but also is superior in dynamic response rate,while when the three-phase circuit is asymmetrical,the symmetrical circuit construction method is more accurate.
