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Energies 2016, 9(8), 579; doi:10.3390/en9080579

A High-Precision Control for a ZVT PWM Soft-Switching Inverter to Eliminate the Dead-Time Effect

Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China
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Author to whom correspondence should be addressed.
Academic Editor: Ali Bazzi
Received: 27 April 2016 / Revised: 13 July 2016 / Accepted: 18 July 2016 / Published: 25 July 2016
(This article belongs to the Special Issue Power Electronics Optimal Design and Control)
View Full-Text   |   Download PDF [2948 KB, uploaded 25 July 2016]   |  

Abstract

Attributing to the advantages of high efficiency, low electromagnetic interference (EMI) noise and closest to the pulse-width-modulation (PWM) converter counterpart, zero-voltage-transition (ZVT) PWM soft-switching inverters are very suitable for high-performance applications. However, the conventional control algorithms intended for high efficiency generally results in voltage distortion. Thus, this paper, for the first time, proposes a high-precision control method to eliminate the dead-time effect through controlling the auxiliary current in the auxiliary resonant snubber inverter (ARSI), which is a typical ZVT PWM inverter. The dead-time effect of ARSI is analyzed, which is distinguished from hard-switching inverters. The proposed high-precision control is introduced based on the investigation of dead-time effect. A prototype was developed to verify the effectiveness of the proposed control. The experimental results shows that the total harmonic distortion (THD) of the output current of the ARSI can be reduced compared with that of the hard-switching inverter, because the blanking delay error is eliminated. The quality of the output current and voltage can be further improved by utilizing the proposed control method. View Full-Text
Keywords: Zero-voltage-transition (ZVT); soft-switching; auxiliary resonant snubber inverter (ARSI); high precision; dead-time effect Zero-voltage-transition (ZVT); soft-switching; auxiliary resonant snubber inverter (ARSI); high precision; dead-time effect
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Kou, B.; Zhang, H.; Zhang, H. A High-Precision Control for a ZVT PWM Soft-Switching Inverter to Eliminate the Dead-Time Effect. Energies 2016, 9, 579.

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