摘要
为解决有源电力滤波器(APF)在谐波电流检测和数字芯片处理过程中所带来的延时问题,提出了一种基于空间矢量的无差拍控制策略。深入分析了APF的系统原理,研究了空间矢量无差拍控制的原理,给出其控制策略。为了减小由谐波电流检测引起的延时,采用了基于瞬时无功功率理论(IRPT)的谐波电流检测方法。采用EMTDC/PSCAD软件搭建了基于无差拍控制的APF系统进行仿真验证,同时搭建了380 V/150 A样机进行实验验证,结果表明此种控制算法能有效抑制APF延时带来的误差,具有较好的动态特性。
In order to solve the time delay of active power filter （APF） in the process of harmonic current detection and digital chip, a deadbeat strategy based on space vector is proposed.It analyses the principle of the APF system and space vector deadbeat control theory,and its control strategy is given.In order to reduce the delay caused by the harmonic current detection,the harmonic current detection method based on instantaneous reactive power theory（IRPT） is used.EMTDC/PSCAD software is used to build a simulation based on the deadbeat control of the APF system and a 380 V/150 A prototype is built to verify the strategy.The results show that such a control strategy can effectively suppress the APF delay error, and has good dynamic characteristics.
出处
《电力电子技术》
CSCD
北大核心
2012年第11期55-56,78,共3页
Power Electronics
