基于反激电路的无电解电容光伏逆变器  

Electrolytic Capacitor-Free Photovoltaic Inverter Based on Fly-Back Circuit

作　　者：苗国耀[1] MIAO Guoyao(School of Electrical Engineering,Henan Mechanical and Electrical Vocational College,He'nan Zhengzhou 450000,China)

机构地区：[1]河南机电职业学院电气工程学院,河南郑州450000

出　　处：《电子器件》2022年第1期97-101,共5页Chinese Journal of Electron Devices

基　　金：河南省科技攻关计划项目(182102210274)。

摘　　要：为消除光伏逆变器中存在故障率较高的电解电容,提出一种基于反激变换器的新型电流源型串联功率解耦方案。简言之,引入串接的能量缓冲单元有效吸收由输入和输出功率造成的差值功率,消除了传统光伏逆变器存在的两倍工频的固有功率纹波。此外,所提结构拥有器件少、结构简单等优点。最后,对所提结构进行了实验验证,其实验结果验证了理论分析的正确性以及所提变换器拓扑的可行性。In order to eliminate the electrolytic capacitors with high failure rate in photovoltaic inverter, a novel current source type series power decoupling scheme based on Fly-back converter is proposed. In short, the introduction of the series-connected buffer unit effectively absorbs the differential power caused by the output power and the input power, and eliminates the inherent power ripple of twice line frequency existing in the traditional photovoltaic inverter. In addition, the proposed structure has the advantages of fewer devices and simple structure. Finally, the experimental results verify the correctness of the theoretical analysis and the feasibility of the proposed converter topology.

关 键 词：微型逆变器 功率脉动 串联功率解耦 反激变换器 电流型逆变器 

分 类 号：TM464[电气工程—电器]