An improved look-up table-based direct torque control for permanent magnet synchronous generator using Vienna rectifier

Yip, Sook Yee and Che, Hang Seng and Tan, Chee Pin and Chong, Wen Tong (2022) An improved look-up table-based direct torque control for permanent magnet synchronous generator using Vienna rectifier. International Journal of Electrical Power & Energy Systems, 138. ISSN 0142-0615, DOI https://doi.org/10.1016/j.ijepes.2021.107875.

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Abstract

This paper presents an improved look-up table-based direct torque control of the permanent magnet synchronous generator using Vienna rectifier for a wind energy conversion system. A stator voltage model for the system was developed to allow an in-depth analysis of the effect of the switching vectors for the Vienna rectifier on the performance of direct torque control. The developed generator model is dedicated to reducing the complexity of look-up table development. Subsequently, an improved look-up table was designed to enhance the overall performance of the permanent magnet synchronous generator in both torque and stator flux ripples, along with the investigation of the computation delay compensation for the digital implementation. The performance was first investigated through Matlab / Simulink before being further validated using a small-scale prototype and a wind turbine emulator. Both simulation and experimental results obtained were compared with the existing direct torque control approach to verify the effectiveness of the proposed system for wind energy extraction. The results show that the enhanced look-up table generates lower ripples in torque and stator flux while improving their reference tracking, especially during unbalanced DC load scenarios. This achievement can be clearly seen by the lower discrepancy percentage between the reference and actual value in the generated torque and stator flux by 6.35% and 0.47%, respectively.

Item Type: Article
Funders: UM Power Energy Dedicated Advanced Centre (UMPEDAC) (FP090-2020), Malaysian Ministry of Higher Education
Uncontrolled Keywords: Direct torque control; Look-up table; Permanent magnet synchronous generator; Vienna rectifier; Wind energy conversion system
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering > Department of Mechanical Engineering
Deputy Vice Chancellor (Research & Innovation) Office > UM Power Energy Dedicated Advanced Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 28 Aug 2023 04:38
Last Modified: 28 Aug 2023 04:38
URI: http://eprints.um.edu.my/id/eprint/42809

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