一种低输入电流纹波的单级式三相并网逆变器

doi:10.19595/j.cnki.1000-6753.tces.170154

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Abstract

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.

Key words： Single-stage low input current ripple three-phase inverter strategy of double modulation

Received: 20 February 2017 Published: 24 May 2018

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TM464

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	Ye Zunjing
	Ji Baojian
	Hong Feng
	Wang Xingxing

Cite this article:

Ye Zunjing,Ji Baojian,Hong Feng等. A Single-Stage Three-Phase Grid-Connected Inverter with Low Input Current Ripple[J]. Transactions of China Electrotechnical Society, 2018, 33(10): 2303-2311.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.170154 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I10/2303

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