基于滑模控制的有源滤波器充电站谐波治理研究

摘要

充电站谐波治理是发展电动汽车和提高电能质量的必然要求.在建立充电站谐波源模型的基础上,利用电流误差信号作为滑模面,提出了采用等速指数趋近率的滑模控制策略,对有源滤波器主电路开关元件进行控制,实现充电站谐波电流的补偿,并通过仿真实验验证了方法的正确性和可行性.该滑模控制方法能削弱抖振现象,具有良好的动态品质,计算量少,适用于充电站有源电力滤波器的实时控制.%An effective harmonic suppression method in charging stations is necessary for developing electric vehicle and improving power quality.After the harmonic source is modeled,using current error signal as the sliding mode face,the slid-ing mode control strategy based on constant speed exponential reaching rate is proposed and the control of the inverter of the active power filter is proved,which can compensate the harmonic current.Simulation results show its feasibility and validi-ty.The method with good dynamic response can reduce chattering and is simple to compute,which is suitable for real-time controlling active power filter in charging stations.