一种新型有源电力滤波器双滞环电流控制策略  

Novel Dual Hysteresis Current Control Strategy for Active Power Filter

作　　者：李国华[1] 梁敬博 张宇[2] 宋路 LI Guohua;LIANG Jingbo;ZHANG Yu;SONG Lu(Faculty of Electrical and Control Engineering,Liaoning Technical University,Huludao 125105,China;Government and Enterprise Service Company,China Mobile Communications Corporation,Beijing 100053,China;Pinggao Group Co.,Ltd,State Grid Corporation of China,Pingdingshan 467000,China)

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125105 [2]中国移动通信集团公司政企客户分公司,北京100053 [3]国家电网公司平高集团有限公司,平顶山467000

出　　处：《电源学报》2021年第3期109-115,共7页Journal of Power Supply

基　　金：国家自然科学基金资助项目(51307076);辽宁省教育厅资助项目(L2015213)。

摘　　要：有源电力滤波器APF(active power filter)是一种动态抑制谐波、补偿无功的电力电子装置,能够对不同大小和频率的谐波进行快速实时跟踪补偿,有效降低电力系统的谐波含量。但APF长期处于高频通断的工作状态,造成较高的功率损耗和故障率,降低了经济性和工作可靠性。针对高功损和高故障率的问题,分析传统滞环电流控制策略的不足,提出一种新型滞环电流控制策略,合理控制APF开关器件的通断,进而降低开关频率,同时提升谐波补偿效果,使APF工作可靠性和谐波补偿性能提高。最后仿真和实验结果验证了该控制策略的可行性与有效性。An active power filter(APF)is a kind of power electronic device with dynamic harmonic suppression and reactive power compensation,which can track and compensate harmonics of various sizes and frequencies timely and rapidly,reducing the harmonic content of power system effectively.However,the APF is always working in high-frequency on-off states,which results in higher power loss and failure rate,thereby reducing its economy and operation reliability.To solve the above problems,the shortage of the traditional hysteresis current control strategy is analyzed,and a novel hysteresis current control strategy is proposed,which reasonably controls the on-off of the APF switching device,thus reducing the switching frequency and improving the harmonic compensation effect.In this way,the operation reliability of the APF and its harmonic compensation performance are improved.Finally,simulation and experimental results verified the feasibility and effectiveness of the proposed operation strategy.

关 键 词：有源电力滤波器 开关频率 故障率 滞环电流控制 工作可靠性 

分 类 号：TM464[电气工程—电器]