Investigation of demagnetization phenomenon in novel ring winding AFPM motor with modified algorithm

Permanent magnet motors have been used recently for many application thanks to high efficiency, high reliability, high power and torque density. However, these motors are vulnerable to demagnetization. This phenomenon reduces motor power and torque density. In this paper, an improved algorithm that...

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Vydané v:Journal of magnetism and magnetic materials Ročník 491; s. 165539
Hlavní autori: Mahmouditabar, F., Vahedi, A., Ojaghlu, P.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Amsterdam Elsevier B.V 01.12.2019
Elsevier BV
Predmet:
Algorithms
Demagnetization
Finite element analysis
Finite element method
Finite element method (FEM)
Flux density
Magnetism
Mathematical analysis
Motors
Permanent magnet (PM)
Permanent magnets
Power efficiency
Ring winding AFPM motor
Time stepping finite elements
Torque
Winding
Finite element method (FEM)
Ring winding AFPM motor
Permanent magnet (PM)
Demagnetization
ISSN:0304-8853, 1873-4766
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Shrnutí:Permanent magnet motors have been used recently for many application thanks to high efficiency, high reliability, high power and torque density. However, these motors are vulnerable to demagnetization. This phenomenon reduces motor power and torque density. In this paper, an improved algorithm that considers only the flux density in the direction of magnetization is presented. Then an irreversible demagnetization in the Ring Winding Axial Flux Permanent Magnet (RWAFPM) motor is conducted during normal operating condition. Also, the effect of different factors such as temperature, armature reaction and self-demagnetization is investigated using Finite Element Method. In addition demagnetization tolerant of the motor at the various temperature conditions is carried out. Finally, using the Time Stepping Finite Element Method (TSFEM), the electromagnetic torque of the motor is calculated.
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content type line 14
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2019.165539