基于改进电流滞环控制的三电平APF及压差平衡闭环控制策略研究  

Research on Three-level APF and Differential Pressure Balance Closed-loop Control Strategy Based on Improved Current Hysteresis Control

作　　者：杨鸽[1] 刘春乐 卓玉洁 YANG Ge;LIU Chunle;ZHUO Yvjie

机构地区：[1]四川水利职业技术学院电力工程系,四川成都611231 [2]山东泰开电力电子有限公司,山东泰安271000

出　　处：《青海电力》2021年第4期1-6,共6页Qinghai Electric Power

摘　　要：主要研究二极管钳位三电平有源电力滤波器中的控制策略问题。由于传统的滞环电流控制策略在三电平有源电力滤波器上的实现有缺陷,因此提出改进滞环电流控制,即结合两电平和三电平的优点来实现对三电平APF的控制;由于三电平直流侧母线压差不平衡的固有问题,提出了一种基于改进滞环电流控制的零序电流注入新型闭环控制方法;最后通过试验验证了控制策略的正确和有效性。Mainly study the control strategy of diode clamped three-level active power filter.Because the traditional hysteresis current control strategy has defects in the realization of the three-level active power filter,it is proposed to improve the hysteresis current control,which combines the advantages of two-level and three-level to realize the control of the three-level APF;Due to the inherent problem of the unbalanced voltage difference of the three-level DC side bus,a new closed-loop control method of zero-sequence current injection based on improved hysteresis current control is proposed;finally,the correctness and effectiveness of the control strategy are verified by experiments.

关 键 词：二极管钳位三电平 有源电力滤波器 闭环控制 电流滞环控制 

分 类 号：TN713.8[电子电信—电路与系统]