A Harmonics Suppression Method for Lithium Battery Grid Integration System

The design scheme of a grid-connected system is described for the lithium battery power recovery.The harmonic current suppression capability of the proposed system is analyzed in detail.Based on the derived system harmonic impedance,a method to optimize the harmonic suppression by adjusting the control scheme is discussed,as well as the limitation of regular controller.Simulation and experimental results with a 3.7 kVA prototype machine validate the proposed method.