Adaptive Magnetic Equivalent Circuit of Rotor-Segmented Axial-Field Switched Reluctance Machine Incorporated with Finite-Element Method

2018 ◽  
Author(s):  
Wei Sun ◽  
Qiang Li ◽  
Lian-Li Zhu ◽  
Da Xu ◽  
Lei Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Equivalent Circuit ◽  
Switched Reluctance Machine ◽  
Axial Field ◽  
Switched Reluctance ◽  
Magnetic Equivalent Circuit ◽  
Reluctance Machine ◽  
Element Method

scholarly journals Analysis Study of Hybrid Magnetic Equivalent Circuit of IPMSM

2021 ◽  
Author(s):  
In-Soo Song ◽  
Byoung-Wook Jo ◽  
Ki-Chan Kim
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Finite Element ◽  
Equivalent Circuit ◽  
Design Parameters ◽  
The Finite Element Method ◽  
Magnetic Equivalent Circuit ◽  
Interior Permanent Magnet ◽  
Equivalent Circuit Method ◽  
Element Method

Recently, the demand for electric vehicle is increasing worldwide due to eco-friendly policies and stricter emission regulations. As a traction motor for electric vehicle, interior permanent magnet synchronous motors are mainly used. For the design of the interior permanent magnet synchronous motor, the magnetic equivalent circuit method, which is a method of lumped constant circuit, and the finite element method, which is a method of distributed constant circuit, mainly are used. Magnetic equivalent circuit method is useful for simple design through fast and intuitive parameters, but it cannot derive the distribution of magnetic field. The finite element method can derive an accurate magnetic field distribution, but it takes a long time to analyze and it is difficult to analyze intuitive design parameters. In this paper, magnetic equivalent circuit method and Carter coefficient are mixed for rotor structure design. This design method will be called the hybrid magnetic equivalent circuit method. Intuitive design parameters are derived through this hybrid magnetic equivalent circuit method. We will derive the Air gap flux density distribution according to rotor shape, no-load induced voltage, and cogging torque, and compare and verify it with the finite element method.

scholarly journals Analysis of an IPMSM Hybrid Magnetic Equivalent Circuit

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5011
Author(s):  
In-Soo Song ◽  
Byoung-Wook Jo ◽  
Ki-Chan Kim
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Finite Element ◽  
Equivalent Circuit ◽  
Design Parameters ◽  
The Finite Element Method ◽  
Magnetic Equivalent Circuit ◽  
Equivalent Circuit Method ◽  
Intuitive Design ◽  
Element Method

The most common type of electric vehicle traction motor is the interior permanent magnet synchronous motor (IPMSM). For IPMSM designs, engineers make use of the magnetic equivalent circuit method, which is a lumped constant circuit method, and the finite element method, which is a distributed constant circuit method. The magnetic equivalent circuit method is useful for simple design through fast and intuitive parameters, but it cannot derive the distribution of the magnetic field. The finite element method can derive an accurate magnetic field distribution, but it takes a long time and is difficult to use for analysis of intuitive design parameters. In this study, the magnetic equivalent circuit method and Carter’s coefficient were combined for rotor structure design and accurate identification and analysis of circuit constants. In this paper, this design method is called the hybrid magnetic equivalent circuit method. Intuitive design parameters are derived through this hybrid magnetic equivalent circuit method. The air gap flux density distribution according to rotor shape, no-load-induced voltage, and cogging torque was analyzed and compared to results of the finite element method. The proposed method was found to achieve a short solving time and acceptably accurate results.

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