A Single-Voltage-Source Class-D Boost Multi-Level Inverter with Self-Balanced Capacitors

Jenn-Jong Shieh, Kuo-Ing Hwu and You-Yang Li
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Jenn-Jong Shieh: Department of Electrical Engineering, Feng Chia University, No. 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan
Kuo-Ing Hwu: Department of Electrical Engineering, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
You-Yang Li: Delta Electronics (Taiwan), No. 16, Dongyuan Rd., Zhongli Dist., Taoyuan City 32063, Taiwan

Energies, 2022, vol. 15, issue 11, 1-15

Abstract: A symmetric single-source 7-level DC-AC converter with voltage gain of 3 and self-voltage balance is presented by combining the Class-D amplifier and the diode-clamped DC-AC converter. There is only one switch is switched for any time in this circuit. As a result, the conversion efficiency can be upgraded significantly as well as the control strategy can be simplified considerably. In the paper, the operation principle and circuit design of this converter are analyzed in detail, and its feasibility and effectiveness are verified by simulation and digital control, respectively.

Keywords: multi-level inverter; diode clamped inverter; self-balanced capacitor; self-voltage balance (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: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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