摘要
讨论了一种大功率有源电力滤波器(APF),系统采用H桥构建了一个三相三线电压型变换器拓扑结构。为达到理想的谐波补偿、无功补偿和不平衡负载控制效果,3个单相H桥构建的三相电路使用三角形连接的模式,适合在大功率APF场合使用。提出了一种指令电流复合控制策略,以达到对检测出的谐波电流的快速跟踪和无功电流补偿的目的。基于理论分析和仿真,在一台大功率APF装置上进行实验,验证了所提控制策略的有效性和该装置的谐波和无功补偿能力。
A high power active power filter（APF） is presented.The main circuit topology adopts a three-phase three- line voltage source converter, which is constituted by three H-bridges.In order to achieve the desired harmonic compensation, reactive power compensation and unbalanced load compensation control effect, three single-phase H-bridges make use of delta-connection mode, which fulfills the requirements of APF device for use in high power applications. A compound control method is presented, it can achieve the fast tracking of the detected harmonic current and reactive current compensation.On the basis of theoretical analysis and simulation, harmonics and reactive power compensation capabilities of the device is verified by a high-power APF device.The proposed control strategy is validity.
出处
《电力电子技术》
CSCD
北大核心
2013年第6期106-108,共3页
Power Electronics
关键词
有源电力滤波器
谐波补偿
大功率
active power filter
harmonic compensation
high power
