与无功补偿电容混用的有源滤波器控制新策略  

New Control Strategy of Shunt Active Power Filter with Mixed Using of Shunt Capacitors

作　　者：赵文强[1] 王智强[1] 陈国柱[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《电气传动》2009年第7期24-28,共5页Electric Drive

基　　金：教育部新世纪人才资助计划(NCET)资助(060512)

摘　　要：并联型有源滤波器能够有效的抑制电流型谐波,而并联电容器能够有效地提高电网的功率因数,但当它们共同工作在同一电网中则存在一些问题,采用传统检测负载电流控制算法时,当电容电流不包含在负载检测电流中系统可以稳定工作,当电容电流包含在负载检测电流中时系统就不能正常工作。针对这些问题给出了一种新颖控制算法,将电网电压、电网电流和负载电流同时检测来控制有源滤波器的输出电流,即使电容电流包含在负载检测电流中,所提出的新的控制算法也能使系统有效的工作,而且可以有效的抑制谐波电流。最后计算机仿真证明了所提方法的正确性和可行性。Shunt active power filter can effectively suppress the current-type harmonics and the shunt capacitors can effectively improved power factor. But when they work in the same electric utility there exists some problems. With traditional control method, the system is stable when the capacitor current is not included in the detected load current, but when the capacitor current is included in the detected load current, system stability and performance of harmonic suppression is incompatible in this system. Then, a novel control method in which the grid voltage, grid current and load current are detected to control the output current of shunt active power filter was proposed. The proposed control method makes the system operate effectively when the capacitor current is included in the detected load current. Computer simulation is performed to verify the validity and effectiveness of the proposed method.

关 键 词：并联型有源滤波器(SAPF) 并联电容器 电压检测 电网电流检测 

分 类 号：TM464[电气工程—电器]