一种新型电流源型APF及其控制  

A Novel Current Source APFConverter and Its Control

作　　者：何芳 刘斌[1] 黄嘉文 王华云 HE Fang;LIU Bin;HUANG Jia-wen;WANG Hua-yun(Nanchang Hangkong University,Nanchang 330063,China;不详)

机构地区：[1]南昌航空大学,信息工程学院,江西南昌330063 [2]国网江西省电力有限公司电力科学研究院,江西南昌330077

出　　处：《电力电子技术》2024年第6期93-98,共6页Power Electronics

基　　金：国家自然科学基金(61963030);省政府重点研发计划(20223BBE51013)。

摘　　要：电压源型有源电力滤波器(APF)常采用三相全桥结构,这种结构存在开关损耗大,至少需要3个功率电感,系统体积大等不足。此处提出了一种新型电流源型APF结构,该结构在一个PWM周期之内只使用3个高频开关和一个主电感。相较于传统电压源型APF,所提结构在提升效率和降低成本等方面更有优势。根据不同的电压及电流状态,此处对系统的开关模式进行了讨论,并对其中典型模式的换流状态进行了分析,在此基础上说明了系统的调制及控制策略,对有源滤波时的电感电流给定和前馈占空比等情况进行了分析,并进一步讨论了系统的硬件设计。最后通过仿真和实验对所提结构的有效性进行验证。Voltage source active power filter(APF)often uses a three-phase full-bridge structure,which has high switching losses and requires at least three power inductors.A novel current source APF structure is proposeed that only requires three switching tubes to work at PWM within one switching cycle and uses only one inductor.Compared with traditional voltage source APF,it has significant advantages in terms of efficiency and cost.Based on different voltage and current states,the switching mode of the system is discussed,and the commutation state of typical modes is analyzed.On this basis,the modulation and control of the system are discussed,and the analysis of inductor current and feedforward duty cycle during active filtering are further discussed,as well as the hardware design of the system.Finally,the proposed conclusions are verified through simulation and experiments.

关 键 词：电流源型有源电力滤波器 效率 开关模式 前馈占空比 

分 类 号：TN713[电子电信—电路与系统]