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Issue title: Selected papers from the International Symposium on Applied Electromagnetics and Mechanics - ISEM 2019
Guest editors: Jinhao Qiu, Ke Xiong and Hongli Ji
Article type: Research Article
Authors: Sirewal, Ghulam Jawada | Ayub, Muhammada | Kwon, Byung-ila;
Affiliations: [a] Department of Electrical and Electronic System Engineering, Hanyang University, Ansan, South Korea
Correspondence: [*] Corresponding author: Byung-il Kwon, Department of Electrical and Electronic System Engineering, Hanyang University, Ansan, South Korea. E-mail: bikwon@hanyang.ac.kr
Abstract: This paper proposes a permanent magnet assisted brushless wound rotor synchronous machine (PMa–BL–WRSM) design. The proposed machine has the advantage of a high starting torque compared to existing BL–WRSM topologies. Additionally, the average torque increases and the torque ripple is reduced when the permanent magnet assisted machine structure is used. PMa–BL–WRSM operates on the principle of brushless excitation using zero-sequence, third-harmonic current generation in the stator windings. The third harmonic component is harnessed to induce a voltage in the harmonic winding which is mounted on the rotor. As there is no flux generated from filed winding in the starting, the starting torque of the machine is also zero. To overcome the problem, permanent magnets (PMs) are inserted in each field tooth to provide the initial source of flux on the rotor. Finite element analysis is performed with the PM–BL–WRSM, and the elicited results are compared with the basic machine structure. The proposed machine operation is verified using 2-D finite element analyses using the ANSYS Maxwell analysis tool.
Keywords: Brushless excitation, harmonic winding, PM-assisted design, synchronous machine
DOI: 10.3233/JAE-209429
Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 64, no. 1-4, pp. 1127-1134, 2020
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