一种新型的正激并网微逆变器

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Abstract Flyback grid-connected micro-inverter has the defects of larger current ripple, larger phase difference of grid-connected current and smaller output power. To solve these problems, A novel single-stage forward grid-connected micro-inverter topology and algorithm is proposed in this paper. The drain-source voltage of the switch is clamped and the core of Transformer is reset with the help of the two transistor forward circuit. A LCD clamping circuit was used to achieve zero voltage switching (ZVS) turning-on of the switch and increase efficiency of the inverter. A L filter was used in output, so the phase of grid-connected current is not different with grid voltage. In-depth analysis was given on the inverter principles and the phase difference of grid connected current. Finally, simulation results and experimental results were given.

Key words： Forward micro-inverter soft-switching phase difference

Received: 10 July 2014 Published: 08 September 2015

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TM315

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	Chen Jihong
	Hong Feng

Cite this article:

Chen Jihong,Hong Feng. A Novel Forward Grid-Connected Micro-inverter[J]. Transactions of China Electrotechnical Society, 2015, 30(14): 286-294.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I14/286

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