A Dual-Buck-Boost DC–DC/AC Universal Converter

Ong, Yao Rong; Cao, Shuyu; Lee, Sze Sing; Lim, Chee Shen; Chen, Max M.; Kurdkandi, Naser Vosoughi; Barzegarkhoo, Reza; Siwakoti, Yam P.

doi:10.3390/electronics11131973

Open AccessArticle

A Dual-Buck-Boost DC–DC/AC Universal Converter

by

Yao Rong Ong

^1,2,

Shuyu Cao

²

,

Sze Sing Lee

^1,*,

Chee Shen Lim

³

,

Max M. Chen

⁴,

Naser Vosoughi Kurdkandi

⁵

,

Reza Barzegarkhoo

⁶ and

Yam P. Siwakoti

⁶

¹

Electrical Power Engineering, Newcastle University, Singapore 567739, Singapore

²

Electrical Power Engineering, Singapore Institute of Technology, Singapore 567739, Singapore

³

Department of Electrical and Electronic Engineering, Xi’an Jiaotong-Liverpool University, Suzhou 215123, China

⁴

Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong

⁵

Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 10120 Tallinn, Estonia

⁶

Faculty of Engineering and Information Technology, University of Technology Sydney, Ultimo, NSW 2007, Australia

^*

Author to whom correspondence should be addressed.

Electronics 2022, 11(13), 1973; https://doi.org/10.3390/electronics11131973

Submission received: 24 May 2022 / Revised: 20 June 2022 / Accepted: 22 June 2022 / Published: 24 June 2022

(This article belongs to the Special Issue Single-Stage DC-AC Power Conversion Systems)

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Abstract

This paper proposes a universal converter that is capable of operating in three modes for generating positive dc voltage, negative dc voltage, and sinusoidal ac voltage. By controlling the duty-cycle of two half-bridges, an inductor is operated at a high frequency to control the voltage across two film capacitors that constitute a dual-buck-boost converter. Two additional half-bridges operating at a fixed state or line frequency are used to select the mode of operation. Compared to the latest universal converter in the recent literature, the proposed topology has the same switch count while reducing the number of conducting switches for inductor current and reducing the number of switches operating at high frequency. The operation of the proposed dual-buck-boost dc–dc/ac universal converter is analyzed. Experimental results are presented for validation. The power conversion efficiency of the 100 W experimental prototype modeled in PLECS is approximately 98%.

Keywords: buck-boost converter; universal converter

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MDPI and ACS Style

Ong, Y.R.; Cao, S.; Lee, S.S.; Lim, C.S.; Chen, M.M.; Kurdkandi, N.V.; Barzegarkhoo, R.; Siwakoti, Y.P. A Dual-Buck-Boost DC–DC/AC Universal Converter. Electronics 2022, 11, 1973. https://doi.org/10.3390/electronics11131973

AMA Style

Ong YR, Cao S, Lee SS, Lim CS, Chen MM, Kurdkandi NV, Barzegarkhoo R, Siwakoti YP. A Dual-Buck-Boost DC–DC/AC Universal Converter. Electronics. 2022; 11(13):1973. https://doi.org/10.3390/electronics11131973

Chicago/Turabian Style

Ong, Yao Rong, Shuyu Cao, Sze Sing Lee, Chee Shen Lim, Max M. Chen, Naser Vosoughi Kurdkandi, Reza Barzegarkhoo, and Yam P. Siwakoti. 2022. "A Dual-Buck-Boost DC–DC/AC Universal Converter" Electronics 11, no. 13: 1973. https://doi.org/10.3390/electronics11131973

APA Style

Ong, Y. R., Cao, S., Lee, S. S., Lim, C. S., Chen, M. M., Kurdkandi, N. V., Barzegarkhoo, R., & Siwakoti, Y. P. (2022). A Dual-Buck-Boost DC–DC/AC Universal Converter. Electronics, 11(13), 1973. https://doi.org/10.3390/electronics11131973

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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A Dual-Buck-Boost DC–DC/AC Universal Converter

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