Due to its great potential value in applications and theory, nonlinear control strategies of active filters, especially passivity-based control (PBC) methods, have been a focus in the literature.

• 利用本质上是非线性反馈的无源性控制(PBC)策略,实现直流侧电容电压的补偿控制,在非线性负载时变未知情形下,确保系统稳定的同时,实现谐波电流的精确计算与跟踪。