Mitigation of Torque Ripple in Interior Permanent Magnet Motors by Optimal Shape Design

2006 ◽  
Vol 42 (11) ◽  
pp. 3706-3711 ◽  
Author(s):  
A. Kioumarsi ◽  
M. Moallem ◽  
B. Fahimi
Keyword(s):  
Permanent Magnet ◽  
Torque Ripple ◽  
Optimal Shape ◽  
Shape Design ◽  
Optimal Shape Design ◽  
Permanent Magnet Motors ◽  
Interior Permanent Magnet

3-D optimal shape design of ferromagnetic pole in MRI magnet of open permanent-magnet type

2002 ◽  
Vol 12 (1) ◽  
pp. 1467-1470 ◽  
Author(s):  
Dong-Hun Kim ◽  
Byung-Sung Kim ◽  
Joon-Ho Lee ◽  
Wan-Soo Nah ◽  
Il-Han Park
Keyword(s):  
Permanent Magnet ◽  
Optimal Shape ◽  
Shape Design ◽  
Optimal Shape Design

scholarly journals Analysis of Torque Ripple and Cogging Torque Reduction in Electric Vehicle Traction Platform Applying Rotor Notched Design

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3053 ◽  
Author(s):  
Myeong-Hwan Hwang ◽  
Hae-Sol Lee ◽  
Hyun-Rok Cha
Keyword(s):  
Permanent Magnet ◽  
Torque Ripple ◽  
Field Analysis ◽  
Permanent Magnet Motors ◽  
Primary Methods ◽  
Cogging Torque ◽  
Electric Cars ◽  
Electric Control ◽  
Interior Permanent Magnet ◽  
Rotor Shape

Drive motors, which are used in the drive modules of electric cars, are interior permanent magnet motors. These motors tend to have high cogging torque and torque ripple, which leads to the generation of high vibration and noise. Several studies have attempted to determine methods of reducing the cogging torque and torque ripple in interior permanent magnet motors. The primary methods of reducing the cogging torque involve either electric control or mechanical means. Herein, the authors focused on a mechanical method to reduce the cogging torque and torque ripple. Although various methods of reducing vibration and noise mechanically exist, there is no widely-known comparative analyses on reducing the vibration and noise by designing a notched rotor shape. Therefore, this paper proposes a method of reducing vibration and noise mechanically by designing a notched rotor shape. In the comparative analysis performed herein, the motor stator and rotor were set to be the same size, and electromagnetic field analysis was performed to determine a notch shape that is suitable for the rotor and that generates reasonable vibration and noise.

scholarly journals Performances analysis of interior permanent magnet motors having different rotor iron pole shapes

2021 ◽  
Vol 12 (4) ◽  
pp. 1999
Author(s):  
Ahlam Luaibi Shuraiji ◽  
Buraq Abdulhadi Awad
Keyword(s):  
Permanent Magnet ◽  
Torque Ripple ◽  
High Energy ◽  
Electromagnetic Torque ◽  
Permanent Magnet Motors ◽  
Element Analysis ◽  
Magnet Material ◽  
Interior Permanent Magnet ◽  
Rotor Pole ◽  
Permanent Magnet Material

<p><span lang="EN-US">Interior permanent magnet motors (IPMMs) have been increasing in popularity, since the emergence of permanent magnet material with high energy products, i.e. rare earth permanent magnet material. This paper analyses the performances of IPMMs having different rotor iron pole shapes including eccentric, sinusoidal and sinusoidal with 3th order harmonic injected rotor pole arc shapes IPMMs. Cogging torque, static torque, torque ripple, torque-speed and power-speed curves of the mentioned motors have been compared. It must be noted that the mentioned motors have been designed with the same stator, PM shape and the same dimensions, in order to highlight the effect of the rotor pole arc shape on the performance of the such motors. Two-dimensional (2D) finite element analysis (FEA) has been utilized to design and analyze the mentioned machines. It has been found that rotor iron pole shape of the IPM has notably influence on the machine performance, practically on output electromagnetic torque and its ripple. The highest value of average electromagnetic torque as well as torque capability in the constant torque reign is delivered by 3th order harmonic injected rotor pole arc shapes machine, while the lowest torque ripple is obtained by the sinusoidal rotor pole arc machine.</span></p>

Optimal Design of an IPM Motor for Machine Tool Applications

2012 ◽  
Vol 472-475 ◽  
pp. 1263-1266 ◽  
Author(s):  
Chang Chou Hwang ◽  
Chia Ming Chang ◽  
Shih Ping Cheng
Keyword(s):  
Optimal Design ◽  
Machine Tool ◽  
Permanent Magnet ◽  
Performance Improvement ◽  
Volume Ratio ◽  
Torque Ripple ◽  
Shape Design ◽  
Interior Permanent Magnet

This paper presents a two-step optimization of shape design for the performance improvement of an interior permanent magnet (IPM) motor. Results from the optimized motor demonstrate that the motor performs favorably with respect to minimization of torque ripple and maximization of average torque to PM volume ratio.

Design of rotor shape for reducing torque ripple in interior permanent magnet motors

2012 ◽  
Vol 39 (1-4) ◽  
pp. 881-887 ◽  
Author(s):  
Un-Jae Seo ◽  
Yon-do Chun ◽  
Jae-Hak Choi ◽  
Pil-Wan Han ◽  
Dae-Hyun Koo
Keyword(s):  
Permanent Magnet ◽  
Torque Ripple ◽  
Permanent Magnet Motors ◽  
Interior Permanent Magnet ◽  
Rotor Shape

Development of Interior Permanent Magnet Motors with Concentrated Windings for Reducing Magnet Eddy Current Loss

2009 ◽  
Vol 129 (11) ◽  
pp. 1022-1029 ◽  
Author(s):  
Katsumi Yamazaki ◽  
Yuji Kanou ◽  
Yu Fukushima ◽  
Shunji Ohki ◽  
Akira Nezu ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Eddy Current ◽  
Eddy Current Loss ◽  
Permanent Magnet Motors ◽  
Current Loss ◽  
Interior Permanent Magnet
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