Boost Converter with Main Switch Possessing ZVT and ZCT and Auxiliary Switch Possessing ZCS

Kuo-Ing Hwu (), Zhi-Fan Lin and Pei-Ching Tseng
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Kuo-Ing Hwu: Department of Electrical Engineering, National Taipei University of Technique, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
Zhi-Fan Lin: FSP Technique Inc., No. 22, Jianguo E. Rd., Taoyuan Dist., Taoyuan City 33068, Taiwan
Pei-Ching Tseng: Department of Electrical Engineering, National Taipei University of Technique, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan

Energies, 2023, vol. 16, issue 14, 1-25

Abstract: In this paper, a zero-voltage and zero-current transition (ZVZCT) boost converter is presented with a small number of auxiliary components, such as a resonant capacitor, a resonant inductor and an auxiliary power switch, to produce a main power switch with both zero-voltage switching (ZVS) and zero-current switching (ZCS). Furthermore, the auxiliary power switch also has zero current switching. In addition, a look-up table is employed to implement an auto-tuning technique to regulate the trigger position and turn-on time of the auxiliary power switch, to further improve efficiency, especially at light load, thereby making the overall efficiency of the converter present a horizontal curve. Moreover, in terms of the system control, the digital controller is implemented directly from the z-domain, and the field programmable gate array (FPGA) is utilized as the system control kernel to achieve a fully digitalized control system. The simulated results are used to demonstrate the feasibility of the proposed converter, whereas the experimental results are used to verify its effectiveness.

Keywords: auto-tuning technique; boost converter; FPGA; fully-digitalized control; z-domain; controller design; ZVZCT; ZVT; ZCT; ZVS; ZCS (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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