Preprint Article Version 1 This version is not peer-reviewed

Novel Dead-Time Compensation Strategy for Wide Current Range in a Three-Phase Inverter

Version 1 : Received: 16 November 2018 / Approved: 19 November 2018 / Online: 19 November 2018 (10:51:21 CET)

A peer-reviewed article of this Preprint also exists.

Lim, J.-W.; Bu, H.; Cho, Y. Novel Dead-Time Compensation Strategy for Wide Current Range in a Three-Phase Inverter. Electronics 2019, 8, 92. Lim, J.-W.; Bu, H.; Cho, Y. Novel Dead-Time Compensation Strategy for Wide Current Range in a Three-Phase Inverter. Electronics 2019, 8, 92.

Journal reference: Electronics 2019, 8, 92
DOI: 10.3390/electronics8010092

Abstract

This paper proposes a novel three-phase voltage source inverter dead-time compensation strategy for accurate compensation in wide current regions of the inverter. In particular, an analysis of the output voltage distortion of the inverter, which appears as parasitic components of the switches, has been conducted for proper voltage compensation in the low current region, and an on-line compensation voltage controller has been proposed. Also, a new trapezoidal compensation voltage implementation method using the current phase is proposed to simplify realizing the trapezoidal shape of the three-phase compensation voltages. Finally, when the proposed dead-time compensation strategy is applied, the maximum phase voltage magnitude in the linear modulation voltage regions is defined to achieve smooth operation even at high modulation index. Simulations and experiments were conducted to verify the performance of the proposed dead-time compensation scheme.

Subject Areas

DTCS; dead-time compensation; trapezoidal compensation voltage; dead-time effects; three-phase VSI compensation

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