并联有源滤波器PWM控制策略比较与实验分析  

Experimental Analysis and Comparison of PWM Control Strategies for Shunt Active Power Filter

作　　者：吴峰[1,2] 郑建勇[1,2] 梅军[1,2] 王立峰[1,2] 

机构地区：[1]东南大学电气工程学院,南京210096 [2]东南大学苏州研究院电气设备与自动化重点实验室,苏州215123

出　　处：《电力系统及其自动化学报》2012年第3期53-58,共6页Proceedings of the CSU-EPSA

基　　金：苏州市科技发展工业公关项目(SG0839)

摘　　要：为了提高并联有源电力滤波器的控制性能,对其几种工程常用的PWM控制策略进行深入分析,对电流滞环控制、三角载波控制和基于空间矢量的电流滞环控制策略进行了仿真研究。通过电流误差信号绘制的极坐标图说明控制算法精度的差别,通过开关信号的频谱分析阐明了针对开关频率附近高次谐波的滤波器的设计思想。搭建并联有源电力滤波器实验平台,采用ip-iq谐波电流检测算法和三角载波PWM控制策略进行系统设计,仿真和实验结果证明了系统设计的合理性和算法的正确性。In this paper, for the better performance of shunt active power filter, some kinds of PWM control strategies used commonly in project are deeply researched, including hysteresis current control strategy, trian- gular carrier current control strategy and hysteresis 1 strategy based on space vectors, and related simulations are made. The accuracy of various control strategies are analyzed according to the polar figures of current error signals. Design idea about filter which can restrain high harmonic around the switching frequency is proposed according to the analysis of switch signal spectrums. The test platform of shunt active power filter is built, a- dopting ip--iq strategy for harmonic wave detecting and triangular carrier current control strategy for current tracking. The results obtained in simulation and test platform show the rationality of the system design and correctness of algorithm.

关 键 词：PWM控制策略 并联有源电力滤波器 谐波治理 电能质量 

分 类 号：TM71[电气工程—电力系统及自动化]