An Insight into the Second-Harmonic Current Reduction Control Strategies in Two-Stage Converters

作     者：Lei Ren Lei Zhang 

作者机构：School of Electrical EngineeringNantong UniversityNantong226019China 

出 版 物：《Energy Engineering》 (能源工程（英文）)

年 卷 期：2022年第119卷第3期

页      面：1179-1196页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 

基　　金：This work was supported in part by the Natural Science Foundation of Jiangsu Province under Grant BK20200969(L.Z. http://std.jiangsu.gov.cn/) 

主　　题：Two-stage single-phase inverter(TSI) second harmonic current(SHC) equivalent circuit models optimization 

摘      要：Due to the components at twice the fundamental frequency of output voltage in the instantaneous output power of a two-stage single-phase inverter(TSI),the second harmonic current(SHC)is generated in the frontend dc-dc converter(FDC).To reduce the SHC,optimizing the control strategy of the FDC is an effective and costless *** view of visual impedance,this paper conducts an intensive study on the SHC reduction *** of the SHC is illustrated ***,the equivalent circuit models of the FDC under different control strategies are proposed to analyse the SHC propagation *** derived model can offer a better insight into how the inductor SHC is affected by the control *** to the derived models,a synthesis of different control strategies is presented and the relevant parameters are listed for control design to achieve better suppression *** benefits and limitations of these control strategies are also *** on the proposed equivalent circuit models,several optimization methods are proposed to enhance the effect.A 1500 VA TSI prototype is built and simulated on MATLAB/Simulink,verifying the effectiveness of the proposed optimization *** paper is aimed to provide a guideline for the control design and control optimization of the TSIs.