Performance Enhancement of Direct Torque-Controlled Permanent Magnet Synchronous Motor with a Flexible Switching Table

Nasr, Ahmed; Gu, Chunyang; Bozhko, Serhiy; Gerada, Chris

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.

Citation

Nasr, A., Gu, C., Bozhko, S., & Gerada, C. (2020). Performance Enhancement of Direct Torque-Controlled Permanent Magnet Synchronous Motor with a Flexible Switching Table. Energies, 13(8), https://doi.org/10.3390/en13081907

• Journal Article Type: Article
• Acceptance Date: Apr 8, 2020
• Online Publication Date: Apr 14, 2020
• Publication Date: Apr 14, 2020
• Deposit Date: Jul 30, 2020
• Publicly Available Date: Jul 30, 2020
• Journal: Energies
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 13
• Issue: 8
• Article Number: 1907
• DOI: https://doi.org/10.3390/en13081907
• Public URL: https://nottingham-repository.worktribe.com/output/4796238
• Publisher URL: https://www.mdpi.com/1996-1073/13/8/1907