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.

Optimal design of synchronous reluctance machine

2014 ◽  
Vol 33 (5) ◽  
pp. 1569-1586 ◽  
Author(s):  
Haiwei Cai ◽  
Bo Guan ◽  
Longya Xu ◽  
Woongchul Choi
Keyword(s):  
Rare Earth ◽  
Optimal Design ◽  
Permanent Magnet ◽  
Torque Ripple ◽  
Content Type ◽  
Synchronous Reluctance Machine ◽  
Reluctance Machine ◽  
Interior Permanent Magnet ◽  
Ipm Machine ◽  
Lower Torque

Purpose – The purpose of this paper is to present optimally designed synchronous reluctance machine (SynRM) to demonstrate the feasibility of eliminating the use of rare earth permanent magnet (PM) in electric machine for vehicle traction applications. Design/methodology/approach – A typical rare earth interior permanent magnet (IPM) machine is used as the benchmark to conduct the optimal design study. Based on the flux distribution, major changes are made to the rotor lamination design. Enhanced torque production and lower torque ripple are specifically targeted as the two main objectives of the proposed design approach. Findings – As a result, the optimally designed SynRM can achieve performance very close to that of the benchmark PM machine with a potential for further improvement. Originality/value – Discussions of IPM replacement by optimally designed SynRM in electrical and hybrid electrical vehicles are given in terms of performance and cost.

scholarly journals Performance Improvement of Concentrated-Flux Type IPM PMSM Motor with Flared-Shape Magnet Arrangement

2020 ◽  
Vol 10 (17) ◽  
pp. 6061
Author(s):  
Keun-Young Yoon ◽  
Soo-Whang Baek
Keyword(s):  
Permanent Magnet ◽  
Performance Improvement ◽  
High Efficiency ◽  
Acoustic Noise ◽  
Permanent Magnet Synchronous Motor ◽  
Torque Ripple ◽  
Proposed Model ◽  
Interior Permanent Magnet ◽  
Low Torque ◽  
Rotor Structure

This study demonstrates that the use of a flared-shape rotor structure in interior permanent magnet (IPM) permanent magnet synchronous motor (PMSM) yields better performance than the basic IPM PMSM motor, using a spoke structure with ferrite magnets. To concentrate the effective magnetic flux, the proposed rotor structure is composed of a number of ferrite magnets, which are inserted in a flared shape in the rotor core. This paper shows the comparison with the analysis results of 2D finite element method (FEM), and it is shown that the proposed IPM PMSM motor can be an effective substitute for the basic IPM PMSM motor, which requires low torque ripple and high efficiency. In particular, the proposed flared IPM PMSM motor has lower pulsation of torque and superior efficiency, as well as lower acoustic noise and vibration, compared to the basic IPM PMSM motor. To verify the performance improvement of the proposed model, a prototype of the proposed model was manufactured. It was experimentally confirmed that the proposed model has lower torque ripple and higher efficiency than the basic model. Based on this performance improvement, the proposed flared IPM PMSM motor is suitable for electric vehicles and home appliances.

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