有源电力滤波器自适应L_2增益控制方法研究  

Novel Adaptive L_2 Gain Control Algorithm for Active Power Filter

作　　者：荣秀婷[1] 李晔[1] 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072

出　　处：《现代电力》2008年第1期28-34,共7页Modern Electric Power

摘　　要：基于有源电力滤波器(APF)的端口受控哈密顿系统(PCH)平均化模型,提出了一种自适应L2增益控制新方法。该方法首先基于APF的能量耗散特性和能量平衡原理,分别建立了APF PCH平均化模型和误差系统PCH平均化模型。在此基础上设计了自适应L2增益控制律,在确保误差系统稳定的同时,实现对参数摄动和外界干扰所造成的跟踪误差的有效抑制。此外,针对准确估计直流电容参考电压波动量的困难,采用在大电容条件下忽略直流电容参考电压波动量的方法,简化了控制方法的执行过程。仿真结果验证了本文所提出方法的正确性和有效性。A novel adaptive L2 gain control algorithm is proposed for active power filter （APF）based on its averaged Port Controlled Hamiltonian （PCH） model： The averaged PCH model of APF is established based on the energydissipation nature of APF state equations. The averaged PCH model of error system is further derived in terms of energy balance. Based on the established error system model, the adaptive L2 gain control algorithm is proposed, which can stabilize the error system and attenuate the tracking errors caused by exogenous disturbances and parametric perturbations. To overcome the difficulty in estimating the ripple component on dc-side capacitor reference voltage, the implementation of control algorithm is simplified by ignoring the ripple component on dc-side capacitor reference voltage. Simulation results are presented to verify the validity of the proposed algorithm.

关 键 词：有源电力滤波器 端口受控哈密顿系统 L2增益 控制 干扰抑制 参数摄动 自适应控制 

分 类 号：TM762[电气工程—电力系统及自动化]