High-Torque Density Design of Small Motors for Automotive Applications with Double Axial-Air-Gap Structures

Akihisa Hattori (), Toshihiko Noguchi and Hiromu Kamiyama
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Akihisa Hattori: Graduate School of Science and Technology, Shizuoka University, Hamamatsu 432-8561, Japan
Toshihiko Noguchi: Graduate School of Science and Technology, Shizuoka University, Hamamatsu 432-8561, Japan
Hiromu Kamiyama: Graduate School of Science and Technology, Shizuoka University, Hamamatsu 432-8561, Japan

Energies, 2022, vol. 15, issue 19, 1-20

Abstract: This paper describes the results of studies on higher torque density of automotive auxiliary motors based on electromagnetic field analysis. Dual stator axial-gap PM motors achieve higher torque density than radial-gap motors in a flat motor shape. Therefore, an axial-gap motor was designed based on a design policy different from that in the past to reduce its volume by half of the radial-gap motors for automotive applications and was experimentally evaluated using a prototype motor. In order to improve the torque density, a double axial-gap motor structure was adopted to achieve wide torque generation areas and was optimally designed, reducing the volume by 44% compared with the existing model. It was experimentally evaluated using a prototype motor.

Keywords: torque density; axial-air-gap; automotive motor; size reduction; flatness ratio; electromagnetic field analysis (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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