Torque enhancement of dual three‐phase PMSM by harmonic injection. Issue 9 (9th July 2020)

• Record Type: Journal Article
• Authors: Hu, Yashan; Huang, Keyuan; Li, Xuefei; Luo, Derong; Huang, Shoudao; Ma, Xiandong
• Is Part Of: IET electric power applications. Volume 14:Issue 9(2020)
• Page Start: 1735
• Page End: 1744
• Publication Date: 2020-07-09
• Subjects: torque -- permanent magnet motors -- machine control -- electric current control -- synchronous motor drives -- power system harmonics; harmonic current control -- harmonic torque -- torque enhancement -- harmonic injection -- torque capability -- harmonics utilisation -- dual three‐phase PMSM system -- dual three‐phase permanent magnet synchronous machine drive system -- flux‐linkage -- prototype DT‐PMSM; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2019.0882
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : The torque enhancement of the dual three‐phase permanent magnet synchronous machine (DT‐PMSM) drive system by full exploitation of flux‐linkage and current harmonics is comparatively studied in this study. The torque capability of DT‐PMSM is previously evaluated with strategies of harmonics utilisation, i.e. strategy 1 of third harmonic utilisation and strategy 2 of fifth and seventh harmonic utilisation, which can extend the torque capability by 18.2 and 9.0%, respectively. However, the full exploitation of harmonics including third, fifth, and seventh harmonics in the dual three‐phase system is not addressed. In this study, the strategy 3 of third, fifth, and seventh harmonic utilisation is also included. Its corresponding harmonic current control is proposed and the average torque and harmonic torque are analysed in detail. Based on a test rig with existing prototype DT‐PMSM, the torque with strategy 3 is increased up to 26.5%, which is superior to the previous strategies.