Electromagnetic performance analysis of connected double‑modulated axial magnetic gear embedded H‑shaped pole shoes for generators

Bin Zhang; Jungang Wang; Ruina Mo

Electromagnetic performance analysis of connected double‑modulated axial magnetic gear embedded H‑shaped pole shoes for generators

Bin Zhang

Jungang Wang

Ruina Mo

Vol. 24, No. 1, pp. 106-118, Jan. 2024

10.1007/s43236-023-00700-5

Axial magnetic gear

Connected double modulation

H-shaped pole shoe

Finite-element analysis

Electromagnetic performance

Abstract

With the development of new energy technologies, there has been an increasing demand for high-powered power generators. Therefore, high torque density and high stability transmission devices are needed to ensure the stable operation of generators. This paper proposes and investigates a connected double-modulated axial magnetic gear embedded H-shaped pole shoes (CDMHAMG) structure. This structure uses a spoke low-speed rotor with embedded H-shaped pole shoes and a connected modulation ring on the other side of the spoke rotor. The CDMHAMG can effectively increase the utilization of permanent magnets and suppress the leakage phenomenon, which greatly increases the torque density and suppress the torque ripple. To study the characteristics of the CDMHAMG, the electromagnetic performance of a conventional axial magnetic gear (CAMG), a spoke axial magnetic gear (SAMG), and different double-modulated axial magnetic gears are finite element analyzed. It can be found that the rotor torque density of the CMDHAMG is 80.18 kN/m3, which is 1.12 times that of the CAMG. In addition, the torque ripple of the CMDHAMG is 11.4%, which is 47.7% of that of the CAMG. Therefore, the CMDHAMG proposed in this paper has greater torque density and higher transmission stability than the CAMG and is more suitable for power generation.

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Cite this article

[IEEE Style]

B. Zhang, J. Wang, R. Mo, "Electromagnetic performance analysis of connected double‑modulated axial magnetic gear embedded H‑shaped pole shoes for generators," Journal of Power Electronics, vol. 24, no. 1, pp. 106-118, 2024. DOI: 10.1007/s43236-023-00700-5.

[ACM Style]

Bin Zhang, Jungang Wang, and Ruina Mo. 2024. Electromagnetic performance analysis of connected double‑modulated axial magnetic gear embedded H‑shaped pole shoes for generators. Journal of Power Electronics, 24, 1, (2024), 106-118. DOI: 10.1007/s43236-023-00700-5.