NOVEL SMALL-CAPACITY PHOTOVOLTAIC/FUEL CELL POWER SUPPLY INVERTER

Qin Shuran; Jiang Jiahui; Chen Daolian; Chen Weiqiang

doi:10.19912/j.0254-0096.tynxb.2021-1602

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (5) : 178-187. DOI: 10.19912/j.0254-0096.tynxb.2021-1602

NOVEL SMALL-CAPACITY PHOTOVOLTAIC/FUEL CELL POWER SUPPLY INVERTER

Qin Shuran¹, Jiang Jiahui¹, Chen Daolian¹, Chen Weiqiang²

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Abstract

A novel small-capacity photovoltaic/fuel cell power supply inverter is proposed for multiple new energy power supply occasions. Key technologies such as its topology, energy management control strategy, high-frequency switching process, dual input source duty cycle, output voltage compound controller design and dual-input common-mode suppression have been studied. The topology is composed of two input source selector switches, two bidirectional Flyback DC choppers working for half an output cycle, and an AC filter capacitor. The proposed master-slave power distribution energy management SPWM composite control strategy is to realize the energy management of the input sources and the seamless switching of the two working modes by controlling the instantaneous value of the output voltage and the output power ratio of the input sources. A 1 kVA photovoltaic/fuel cell dual-input inverter prototype is designed and developed. The experimental results show that the inverter has the advantages of single-stage power conversion, high conversion efficiency, wide duty cycle adjustment range, high output waveform quality and seamless switching between different power supply modes.

Key words

dual-input inverter / Flyback chopper / fuel cell / energy management control strategy / common-mode voltage suppression of the dual-input source

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Qin Shuran, Jiang Jiahui, Chen Daolian, Chen Weiqiang. NOVEL SMALL-CAPACITY PHOTOVOLTAIC/FUEL CELL POWER SUPPLY INVERTER[J]. Acta Energiae Solaris Sinica. 2023, 44(5): 178-187 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1602

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