Numerical study of electromagnetic force density of permanent magnet synchronous motor under demagnetization fault

2021 ◽  
Author(s):  
Haixi Gao ◽  
Yinquan Yu
Keyword(s):  
Permanent Magnet ◽  
Electromagnetic Force ◽  
Numerical Study ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Force Density

scholarly journals Research on the Non-Magnetic Conductor of a PMSM Based on the Principle of Variable Exciting Magnetic Reluctance

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 318
Author(s):  
Chunyan Li ◽  
Fei Guo ◽  
Baoquan Kou ◽  
Tao Meng
Keyword(s):  
Permanent Magnet ◽  
Electromagnetic Force ◽  
Electromotive Force ◽  
Permanent Magnets ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Magnetic Conductor ◽  
Critical Speeds ◽  
Motor Structure ◽  
Test Result

A permanent magnet synchronous motor (PMSM) based on the principle of variable exciting magnetic reluctance (VMRPMSM) is presented. The motor is equipped with symmetrical non-magnetic conductors on both sides of the tangential magnetized permanent magnets (PMs). By placing the non-magnetic conductor (NMC), the magnetic reluctance in the exciting circuit is adjusted, and the flux weakening (FW) of the motor is realized. Hence, the NMC is studied comprehensively. On the basis of introducing the motor structure, the FW principle of this PMSM is described. The shape of the NMC is determined by analyzing and calculating the electromagnetic force (EF) acting on the PMs. We calculate the magnetic reluctance of the NMC and research on the effects of the NMC on electromagnetic force, d-axis and q-axis inductance and FW performance. The critical speeds from the test of the no-load back electromotive force (EMF) verify the correctness of the NMC design. The analysis is corresponding to the test result which lays the foundation of design for this kind of new PMSM.

scholarly journals Numerical Study on the Influence of Non-uniform Demagnetization of Permanent Magnet Synchronous Motor

2021 ◽  
Vol 1754 (1) ◽  
pp. 012137
Author(s):  
Guopei Wu ◽  
Yinquan Yu ◽  
Jinwen Yang ◽  
Qiping Chen ◽  
Shaowei Zhou
Keyword(s):  
Permanent Magnet ◽  
Numerical Study ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor

scholarly journals Study on the Characteristics of Electromagnetic Noise of Axial Flux Permanent Magnet Synchronous Motor

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Wei Wang ◽  
Hang Wang ◽  
Hamid Reza Karimi
Keyword(s):  
Permanent Magnet ◽  
Natural Frequency ◽  
Electromagnetic Force ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Force Distribution ◽  
Noise Sources ◽  
Axial Flux ◽  
Electromagnetic Noise ◽  
Theoretical Support

The normal electromagnetic force distribution in stator system of axial flux permanent magnet synchronous motor (PMSM) has been thoroughly analyzed in this paper. The main composition of force wave causing vibration and noise has been proposed, and at the same time a calculation method of stator natural frequency of axial flux PMSM has been raised. Through this method electromagnetic force wave, natural frequency, vibration response, and electromagnetic noise of a 15 kW axial flux PMSM with 22 poles and 24 slots have been calculated; calculations and measured values are consistent by comparison. The noise sources of axial flux PMSM have been found in this paper, which provides the theoretical support for the suppression of electromagnetic noise of axial flux PMSM.

Radial Electromagnetic Force Wave Analysis of Permanent Magnet Synchronous Motor for Electric Vehicle

2011 ◽  
Vol 211-212 ◽  
pp. 948-952 ◽  
Author(s):  
Cong Gan Ma ◽  
Shu Guang Zuo ◽  
Rong He ◽  
Lv Chang He
Keyword(s):  
Permanent Magnet ◽  
Electric Vehicles ◽  
Electromagnetic Force ◽  
Parametric Design ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Space Distribution ◽  
Magnetic Flux Density ◽  
Phase Voltage ◽  
Three Phase

In this paper, Radial Electromagnetic Force Wave, which causes the magnetic noise of the permanent magnet synchronous motor used in the electric vehicles of the Shanghai Expo, is studied by programming with ANSYS Parametric Design Language (APDL). The magnetic properties such as magnetic induction, magnetic field, magnetic flux density between the stator and the rotor are researched at no load and three-phase voltage load. Then all of the data is combined with Maxwell’s equations to calculate the space distribution and time distribution of radial electromagnetic force wave. Finally, it is made a main conclusion that main frequencies of radial electromagnetic force wave at the 3-phase voltage load are 200*k Hz (k=1, 2, 3…) and the corresponding levels are 3*k (k=1, 2, 3…).What’s more, it is also concluded that the radial electromagnetic force wave gain at Level 9 and 600 Hz reaches the peak.

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