A single-stage three-phase grid-connected inverter with low input current ripple

被引：0
|
作者：
Ye Z. [1 ]
Ji B. [1 ]
Hong F. [2 ]
Wang X. [1 ]
机构：
[1] College of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing
[2] College of Electronic and Information Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing
来源：
Ji, Baojian (ji_baojian@126.com) | 2018年 / China Machine Press卷 / 33期
关键词：
Single-stage low input current ripple; strategy of double modulation; three-phase inverter;
D O I：
10.19595/j.cnki.1000-6753.tces.170154
中图分类号：
学科分类号：
摘要：
The single-stage single-phase grid-connected inverter has the defect of low-frequency ripple in input current. To overcome this defect, a novel single-stage three-phase grid-connected inverter topology and the strategy of double modulation are proposed in this paper. The three-phase output circuits share primary circuit and the active-clamp circuit is applied in this inverter, which can simplify the circuit and improve system efficiency. The input current low-frequency ripple can be reduced by using the strategy of constant power to control input current in the primary side. The strategy of inverter modulation is adopted in secondary side, and the output power of the three-phase inverter system is close to a constant value without power pulsation problem. The inverter principles, driver logic of double modulation and grid-connected algorithm are also analyzed. Finally, a 480W prototype is developed and tested, and the experimental results verify the feasibility of the micro-inverter. © 2018, Electrical Technology Press Co. Ltd. All right reserved
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页码：2303 / 2311
页数：8
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