中文摘要：

为抑制LCL滤波器谐振问题,提出了多种无源阻尼与有源阻尼技术,主要包括多环控制策略和状态反馈等。为便于工程人员能够选择合适的阻尼技术,从多方面分析比较了引入不同反馈变量的多环控制策略以及不同种类的状态反馈控制特点。同时还介绍了其他类型的阻尼谐振技术。

英文摘要：

Passive damping and active damping techniques were put forword to suppress LCL-fiher resonance. Active damping techniques have better performance of LCL-fiher resonance suppression effect than passive damping technology,it mainly includes muhiloop control strategies and state feedback control strategies. For convenience of engineering staff selecting appropriate damping technologies, the characteristics of muhiloop control strategies and different kinds of state feedback control strategies were introduced from various aspects. Other damping resonance techniques were also introduced.