TWO-WINDS HIGH EFFICIENCY HIGH STEP-UP DC-DC CONVERTER APPLICABLE TO NEW ENERGY POWER GENERATION SYSTEM

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

doi:10.19912/j.0254-0096.tynxb.2022-0279

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (6) : 161-169. DOI: 10.19912/j.0254-0096.tynxb.2022-0279

TWO-WINDS HIGH EFFICIENCY HIGH STEP-UP DC-DC CONVERTER APPLICABLE TO NEW ENERGY POWER GENERATION SYSTEM

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

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Abstract

In order to solve the problem that the voltage grade of photovoltaic power generation and other new energy power generation technologies is low and cannot meet the requirement of grid-connected voltage, a two-winds high efficiency high step-up DC-DC converter applicable to new energy power generation system is presented. Based on the Boost converter, switched-capacitor structure and coupled-inductor technology are used to obtain high voltage gain and reduce the voltage stress of switch. The passive clamping structure can alleviate the problem about the high voltage peak of the switch and improve the energy conversion efficiency. This paper conducts detailed analysis about the operating principle of the proposed converter, and the current stress, voltage stress of components and efficiency of the converter are calculated precisely. An experimental prototype with a rated power of 200 W was built in the laboratory, and the experimental data shows that the maximum efficiency of the converter reaches 97.5％.

Key words

DC-DC converter / coupling circuit / gain regulation / new energy power generation / high efficiency / continuous input current

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Ye Ruiming, Zhang Min, Xue Pengfei, Yuan Chenggong, Zhao Zhenwei, Zhao Chang. TWO-WINDS HIGH EFFICIENCY HIGH STEP-UP DC-DC CONVERTER APPLICABLE TO NEW ENERGY POWER GENERATION SYSTEM[J]. Acta Energiae Solaris Sinica. 2023, 44(6): 161-169 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0279

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