HIGH-GAIN COUPLED INDUCTOR DC-DC CONVERTER AND STABILITY CONTROL

Zhang Min; Yuan Chenggong; Xue Pengfei; Ye Ruiming; Zhao Zhenwei; Zhao Chang

doi:10.19912/j.0254-0096.tynxb.2022-0322

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (7) : 198-206. DOI: 10.19912/j.0254-0096.tynxb.2022-0322

HIGH-GAIN COUPLED INDUCTOR DC-DC CONVERTER AND STABILITY CONTROL

Zhang Min, Yuan Chenggong, Xue Pengfei, Ye Ruiming, Zhao Zhenwei, Zhao Chang

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Abstract

A high-gain coupled inductor DC-DC converter is proposed to stabilize photovoltaic systems’high DC voltage output. The topology gain can be regulated flexibly by changing the turn ratio of the boost unit of the coupling circuit. The clamp capacitor recovers the coupled inductor’s leakage energy, reduces the switch tube’s voltage spike, and improves the efficiency of the topology. The converter has a fast dynamic response and strong robustness by having closed-loop control. The working mode of the converter is analyzed, and the gain and device stress are deduced. Compared with typical topologies, the stability and feasibility of the converter under closed-loop control are verified by simulation and prototype experiments.

Key words

DC-DC converters / coupling circuits / gain regulation / closed-loop control / robustness

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Zhang Min, Yuan Chenggong, Xue Pengfei, Ye Ruiming, Zhao Zhenwei, Zhao Chang. HIGH-GAIN COUPLED INDUCTOR DC-DC CONVERTER AND STABILITY CONTROL[J]. Acta Energiae Solaris Sinica. 2023, 44(7): 198-206 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0322

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