基于LCL滤波电压型PWM逆变器有源阻尼控制研究  

Research on Active Damping Control of Voltage PWM Inverter Based on LCL Filter

作　　者：徐丽 Xu li(Changshu Switchgear Mfg Co.Ltd,Jiangsu Province Smart Grid Key Laboratory of Key Technology Research For Power Distribution and Consumption,Changshu Jiangsu 211500)

机构地区：[1]常熟开关制造有限公司,江苏省智能电网配用电关键技术研究重点实验室,江苏常熟211500

出　　处：《中国仪器仪表》2021年第1期51-56,共6页China Instrumentation

摘　　要：本文对LCL滤波PWM逆变器采样桥臂侧电流和采样网侧电流的数学模型幅频特性进行了分析,对滤波电容并联虚拟电阻系统建模并分析其幅频特性及对稳定性的影响,仿真实现了滤波电容并联虚拟电阻算法的有源阻尼控制策略,验证该算法的有效性和可行性。In this paper,the amplitude frequency characteristics of the mathematical models of the sampling bridge arm side current and the sampling network side current of the LCL filter PWM inverter are analyzed,and the amplitude frequency characteristics and the influence on the stability of the virtual resistance system of the filter capacitor parallel connection are modeled,and the active damping control strategy of the filter capacitor parallel virtual resistance algorithm is simulated,and the effectiveness and feasibility of the algorithm are verified.

关 键 词：LCL滤波 逆变器 谐振效应 有源阻尼 

分 类 号：TM464[电气工程—电器] TN713[电子电信—电路与系统]