An Analytical Method for Calculating the Cogging Torque of a Consequent Pole Hybrid Excitation Synchronous Machine Based on Spatial 3D Field Simplification

Zhiyan Zhang, Ming Zhang, Jing Yin, Jie Wu and Cunxiang Yang
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Zhiyan Zhang: School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Ming Zhang: School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Jing Yin: School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Jie Wu: School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Cunxiang Yang: School of Building Environment Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China

Energies, 2022, vol. 15, issue 3, 1-13

Abstract: Consequent pole hybrid excitation synchronous (CPHES) machines have the advantage of symmetrical bidirectional magnetomotive force increments. Compared with a traditional hybrid excitation motor (HEM), a CPHES machine improves the disadvantage of asymmetry in the adjustment range when magnetization and demagnetization occur. The calculation and analysis of the cogging torque of the CPHES machine are complex due to the complicated structure. This paper proposes an analytical method for calculating the cogging torque of a CPHES machine. This analytical method converts the complex three-dimensional magnetic field problem into a two-dimensional magnetic circuit problem and, through the accumulation method, can quickly and accurately calculate the cogging torque of the CPHES machine. In contrast with the finite element method, the calculation results basically follow each other, but the analytical method is more efficient and omits complicated meshing. This is of great significance to the preliminary electromagnetic design and performance optimization of a CPHES machine.

Keywords: analytical method; cogging torque; CPHES machine; hybrid excitation machine; spatial field simplification (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 (3)

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