Affiliations: [a] Department of Electrical and Electronic Engineering, Hanyang University, Ansan, South Korea
Correspondence:
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Corresponding author: Byung-il Kwon, Department of Electronic System Engineering, 1271 Sa 3-dong, Sangrok-gu Ansan-si Gyeonggi-do, 15588, South Korea. E-mail: bikwon@hanyang.ac.kr
Abstract: The paper proposes a hybrid-excited wound field synchronous machine (HE-WFSM), which can achieve high reluctance torque utilization. The key of the proposed HE-WFSM is that two permanent magnets (PMs) assist each rotor pole in forming an additional magnetic flux circle. It is opposite to the magnetic flux circle along the q-axis in the WFSM. The reduction of the q-axis flux can help to improve the saliency ratio and reluctance torque. Additionally, the asymmetrical flux linkage achieves a closest current phase angle between the maximum field torque and the maximum reluctance torque. To highlight the advantages of the proposed HE-WRSM, a general WFSM was adopted as the basic machine and analyzed under the same operating conditions. All performances of the basic machine and proposed HE-WFSM were predicted using finite element analysis (FEA) in Jmag-Designer. Finally, it was confirmed that the proposed HE-WRSM can achieve high reluctance torque utilization.
Keywords: Hybrid-excited wound field synchronous machine, high reluctance torque utilization, finite element analysis
