Switched Reluctance Motor Drive using Phase-Shifted PWM in Asymmetric Three-Level Neutral Point Diode Clamped Converter and Comparison with level-shifted PWM

Document Type : Original Article

Authors

Shahid Beheshti University

Abstract

In this paper, the phase-shifted pulse width modulation (PWM) method is proposed in an asymmetric three-level neutral point diode clamped (NPC) converter for switched reluctance motor (SRM) drive. In order to control this converter, the level-shifted PWM method is used usually. The proposed modulation method is compared with the level-shifted PWM method on the basis of switching frequency and current ripple. The switching frequency is independent of the load in the proposed method, while current ripple in two cases is almost equal. The switching frequency changes in a nonlinear manner by changing the load in the level-shifted PWM method. Therefore, the switches stress will be increased by the load variation. The effectiveness of the proposed method is verified by theoretical, simulation and comparison results.
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History

  • Receive Date: 22 February 2019
  • Revise Date: 13 December 2020
  • Accept Date: 14 April 2021
  • First Publish Date: 21 April 2021

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