A Novel Single-Phase Nonisolated Dual-Input Microinverter With Active Power Decoupling

被引:0
|
作者
Xiao, Chengqi [1 ]
Wu, Weimin [1 ,2 ]
Guo, Qingkai [3 ]
Orabi, Mohamed [4 ]
Koutroulis, Eftichios [5 ]
Chung, Henry Shu-Hung [6 ,7 ]
Blaabjerg, Frede [8 ]
机构
[1] Shanghai Maritime Univ, Elect Engn Dept, Shanghai 201306, Peoples R China
[2] Anhui Univ Sci & Technol, Sch Elect & Informat Engn, Huainan 232001, Anhui, Peoples R China
[3] Hitrend Technol Co Ltd, Syst Res & Dev Dept, Shanghai 201203, Peoples R China
[4] Aswan Univ, Fac Engn, Aswan 81542, Egypt
[5] Tech Univ Crete, Sch Elect & Comp Engn, Khania 73100, Greece
[6] City Univ Hong Kong, Dept Elect Engn, Hong Kong, Peoples R China
[7] City Univ Hong Kong, Ctr Smart Energy Convers & Utilizat Res, Hong Kong, Peoples R China
[8] Aalborg Univ, Energy Engn Dept, DK-9100 Aalborg, Denmark
基金
中国国家自然科学基金;
关键词
Circuits; Switches; Capacitors; Inductors; Topology; Photovoltaic systems; Inverters; Solar power generation; Leakage currents; Discharges (electric); Microinverter; nonisolated; photovoltaic (PV); power decoupling; MICRO-INVERTER; TRANSFORMERLESS;
D O I
10.1109/TPEL.2024.3486923
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Aiming at the challenges faced by single-phase nonisolated microinverters (MIs) such as leakage current and power fluctuation, a nonisolated common-ground MI with active power decoupling capability is proposed in this article. In this topology, the photovoltaic (PV) module and the grid have a common terminal, thereby eliminating the common-mode leakage current. Power decoupling between dual-input sources and the grid is inherent, so electrolytic capacitors can be replaced with long-life, small-capacity film capacitors. The proposed MI requires only four switches and can handle the power of two PV modules in a modular manner. A 400-W experimental prototype has been built in the laboratory to verify the performance of the proposed MI and the feasibility of the proposed scheme.
引用
收藏
页码:4437 / 4448
页数:12
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