A Study on Core Skew Considering Manufacturability of Double-Layer Spoke-Type PMSM

Dong-Woo Nam, Kang-Been Lee, Hyun-Jo Pyo, Min-Jae Jeong, Seo-Hee Yang, Won-Ho Kim and Hyung-Kwan Jang
Additional contact information
Dong-Woo Nam: Department of Electrical Engineering, Gachon University, Seongnam 13120, Korea
Kang-Been Lee: Hyundai & Kia Motors Namyang Institute, Hwaseong 18280, Korea
Hyun-Jo Pyo: Department of Electrical Engineering, Gachon University, Seongnam 13120, Korea
Min-Jae Jeong: Department of Electrical Engineering, Gachon University, Seongnam 13120, Korea
Seo-Hee Yang: Department of Electrical Engineering, Gachon University, Seongnam 13120, Korea
Won-Ho Kim: Department of Electrical Engineering, Gachon University, Seongnam 13120, Korea
Hyung-Kwan Jang: Department of Electrical Engineering, Hanyang University, Seoul 14763, Korea

Energies, 2021, vol. 14, issue 3, 1-14

Abstract: The spoke-type permanent magnet synchronous motor (PMSM), which is a general ferrite magnetic flux-concentrated motor, has a low portion of reluctance torque at the total torque magnitude. Therefore, as a way to increase the reluctance torque, there is a double-layer spoke-type PMSM that can maximize the difference in inductance between the d-axis and the q-axis. However, in the double-layer spoke-type PMSM, cogging torque, torque ripple, and total harmonic distortion (THD) increase with reluctance torque, which is the main cause of vibration and noise. In this paper, a method is proposed that provides the same effect as skew without dividing stages of the permanent magnet by dividing the core of the rotor into two types so that it is easy to manufacture according to the number of stages, unlike extant skew methods. Based on the method, the reduction in cogging torque and THD was verified by finite element analysis (FEA).

Keywords: cogging torque; torque ripple; THD; spoke type PMSM (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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