The controller of active power filter has the demand for real-time, dynamic performance and control accuracy, based on the balance of power between input and output, the mathematical model of active power filter was established, and the novel nonlinear control method was proposed. Combining the nonlinear feedback control with adaptive control, adaptive control rate of the parameter was designed, the power instantaneous active reference current and the system's state equations which can ensure the stabilization of DC side capacitor voltage and track the harmonic currents accurately with unknown change in the parameters of lines and loads were obtained. Simulation and experimental results confirmed show that this control method is correct and feasible, and it has a better dynamic performance and stronger robustness.%针对有源电力滤波器控制有实时性、动态性能和控制精度的要求,在基于输入输出间功率平衡特性下,建立基于功率平衡特性有源电力滤波器数学模型,同时提出一种新型非线性控制方法.该控制方法将非线性反馈控制方法和自适应控制相结合,设计参数自适应控制率,得到电网侧瞬时有功参考电流以及系统状态方程,实现在线路与负载参数时变未知的情况下,直流侧电容电压补偿控制和谐波电流的精确跟踪.Matlab/Simulink仿真和实验结果表明:该控制方法正确可行,并具有较好的动态特性和较强的鲁棒性.
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