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

Nasr, Ahmed and Gu, Chunyang and Bozhko, Serhiy and Gerada, Chris (2020) Performance enhancement of direct torque-controlled permanent magnet synchronous motor with a flexible switching table. Energies, 13 (8). p. 1907. ISSN 1996-1073

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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.

Item Type: Article
Keywords: direct torque control (DTC); permanent magnet synchronous motor (PMSM); voltage vector selection; switching table (ST)
Schools/Departments: University of Nottingham Ningbo China > Faculty of Science and Engineering > School of Aerospace
Identification Number: https://doi.org/10.3390/en13081907
Depositing User: QIU, Lulu
Date Deposited: 19 Aug 2020 06:21
Last Modified: 19 Aug 2020 06:21
URI: http://eprints.nottingham.ac.uk/id/eprint/61359

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