A New Buck-Boost Converter

doi:10.11985/2020.04.005

Abstract

Abstract:

For the problems of traditional Buck-Boost converter including limited output voltage and poor stability, and the adjustable duty cycle range is insufficient, a new Buck-Boost converter topology is proposed. The working process of the converter is analyzed, the output-input voltage relationship of the converter and the voltage stress expression of the capacitor are derived. Compared with the traditional Buck-Boost converter, the new converter can achieve better voltage reduction effect when working in a more reasonable duty cycle range. The simulation results verify the correctness of theoretical analysis, and the experimental results show that the new Buck-Boost converter is feasible.

Key words: DC-DC converter, duty ratio, circuit topology, voltage stress

CLC Number:

TM464

FANG Xupeng, QI Zhongming, WANG Qingqing, TI Xiaodong. A New Buck-Boost Converter[J]. Journal of Electrical Engineering, 2020, 15(4): 45-51.

Figures/Tables 10

References 13

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参数名	参数值	参数名	参数值
直流电源 E/V	24	电阻 R/Ω	40
电感1 L₁/μH	1 000	电容1 C₁/μF	100
电感2 L₂/μH	330	电容2 C₂/μF	47
电感3 L₃/μH	100	输出滤波电容C₀/μF	330

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