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A DC-to-Three-Phase-AC High-Frequency Link Converter With Compensation for Nonlinear Distortion

De, Dipankar and Ramanarayanan, Venkataramanan (2010) A DC-to-Three-Phase-AC High-Frequency Link Converter With Compensation for Nonlinear Distortion. In: IEEE Transactions on Industrial Electronics, 57 (11). pp. 3669-3677.

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Abstract

This paper focuses on a new high-frequency (HF) link dc-to-three-phase-ac power converter. The least number of switching devices among other HF link dc-to-three-phase-ac converters, improved power density due to the absence of devices of bidirectional voltage-blocking capability, simple commutation requirements, and isolation between input and output are the integral features of this topology. The commutation process of the converter requires zero portions in the link voltage. This causes a nonlinear distortion in the output three-phase voltages. The mathematical analysis is carried out to investigate the problem, and suitable compensation in modulating signal is proposed for different types of carrier. Along with the modified modulator structure, a synchronously rotating reference-frame-based control scheme is adopted for the three-phase ac side in order to achieve high dynamic performance. The effectiveness of the proposed scheme has been investigated and verified through computer simulations and experimental results with 1-kVA prototype.

Item Type: Journal Article
Additional Information: Copyright of this article 2010 belongs to IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Commutation; dc/ac power conversion; digital controller; modified modulating signal; nonlinear distortion
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 18 Nov 2010 12:20
Last Modified: 18 Nov 2010 12:20
URI: http://eprints.iisc.ernet.in/id/eprint/33843

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