RESEARCH ON SOFT SWITCHING OF DUAL CHOPPER FOR SOLAR AIRCRAFT

Dai Zhuangzhi; Liu Jilong; Li Kefeng; Chen Peng; Mai Zhiqin

doi:10.19912/j.0254-0096.tynxb.2022-0798

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (9) : 220-228. DOI: 10.19912/j.0254-0096.tynxb.2022-0798

RESEARCH ON SOFT SWITCHING OF DUAL CHOPPER FOR SOLAR AIRCRAFT

Dai Zhuangzhi, Liu Jilong, Li Kefeng, Chen Peng, Mai Zhiqin

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Abstract

A novel soft-switching strategy is proposed, which achieves zero-voltage turn-on of the lower switch by reducing the filter inductance to generate a sufficiently large phase current ripple without adding any components or altering the input current ripple. The strategy not only reduces the switching losses and improves the operating efficiency, but also reduces the weight of the inductor and heat sink, thereby enhancing the power density of the device. Finally, the proposed soft-switching strategy is validated by a 2 kW experimental prototype.

Key words

zero-voltage-switching / soft-switching / Boost converter / solar aircraft

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Dai Zhuangzhi, Liu Jilong, Li Kefeng, Chen Peng, Mai Zhiqin. RESEARCH ON SOFT SWITCHING OF DUAL CHOPPER FOR SOLAR AIRCRAFT[J]. Acta Energiae Solaris Sinica. 2023, 44(9): 220-228 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0798

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