Fast Analysis and Optimization of a Magnetic Gear Based on Subdomain Modeling

Manh-Dung Nguyen, Woo-Sung Jung, Duy-Tinh Hoang, Yong-Joo Kim, Kyung-Hun Shin () and Jang-Young Choi ()
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Manh-Dung Nguyen: Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
Woo-Sung Jung: Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
Duy-Tinh Hoang: Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
Yong-Joo Kim: Department of Biosystem Machinery Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
Kyung-Hun Shin: Department of Electrical Engineering, Changwon National University, Changwon 51140, Republic of Korea
Jang-Young Choi: Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea

Mathematics, 2024, vol. 12, issue 18, 1-18

Abstract: This study presents a two-dimensional analytical method for fast optimization, taking into consideration the influence of the eddy current in a magnet and iron loss within a coaxial magnetic gear. Subdomain modeling was utilized to obtain vector potentials in the air-gap, magnet, and modulation regions by solving Maxwell’s equations. After that, the magnet, rotor, and modulation losses were predicted and then compared using a finite element method simulation within three topologies with gear ratios ranging from five to six. The authors improved the machine performance, specifically the torque density, by employing a multi-objective function with particle swarm optimization. The flux density obtained using subdomain modeling in just 0.5 s benefits the optimization process, resulting in a torque-density optimal model after around 3 h. A 3/19/16 prototype targeting a low-speed, high-torque, permanent generator application was fabricated to verify the analytical and simulation results.

Keywords: analytical modeling; design optimization; electromagnetic fields; finite element analysis; iron loss; magnet loss; magnetic gear; mathematical modeling; subdomain modeling (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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