Performance enhancement of direct torque-controlled permanent magnet synchronous motor with a flexible switching table

Ahmed Nasr, Chunyang Gu, Serhiy Bozhko, Chris Gerada

Research output: Journal PublicationArticlepeer-review

10 Citations (Scopus)
4 Downloads (Pure)

Abstract

In this paper, a flexible switching table (FST) for direct torque control (DTC) of permanent magnet synchronous motors (PMSMs) was proposed to enhance the steady-state and dynamic performances of the drive system. First, the influence of each converter output voltage vectors on the torque and stator flux deviation rates was analyzed to assess the voltage selection strategies of the conventional STs and their impact on the DTC system's performance. Then, a new flexible ST was proposed which uses a simple algorithm to adaptively select the appropriate voltage vector for two of its states according to the system operating condition. The effectiveness and feasibility of the proposed FST were verified through a comparative evaluation with the conventional STs using experimental results obtained from a 0.75 kW PMSM drive system.

Original languageEnglish
Article number1907
JournalEnergies
Volume13
Issue number8
DOIs
Publication statusPublished - Apr 2020

Keywords

  • Direct torque control (DTC)
  • Permanent magnet synchronous motor (PMSM)
  • Switching table (ST)
  • Voltage vector selection

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering

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