scholarly journals Line start synchronous reluctance motor with improved power factor for agriculture electric pump applications

2021 ◽  
Author(s):  
G. Aswin Uvaraj ◽  
N.C. Lenin ◽  
Sanjeevikumar Padmanaban ◽  
Baseem Khan
Keyword(s):  
Power Factor ◽  
Electric Pump ◽  
Synchronous Reluctance Motor ◽  
Reluctance Motor

scholarly journals Improvements of Power Factor and Torque of a Synchronous Reluctance Motor with a Slit Rotor

2006 ◽  
Vol 126 (2) ◽  
pp. 116-123 ◽  
Author(s):  
Masayuki Nashiki ◽  
Yoshimitu Inoue ◽  
Youichi Kawai ◽  
Takanori Yokochi ◽  
Akiyoshi Satake ◽  
...  
Keyword(s):  
Power Factor ◽  
Synchronous Reluctance Motor ◽  
Reluctance Motor

scholarly journals Study on Line-Start Permanent Magnet Assistance Synchronous Reluctance Motor for Improving Efficiency and Power Factor

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 384 ◽  
Author(s):  
Hyunwoo Kim ◽  
Yeji Park ◽  
Huai-Cong Liu ◽  
Pil-Wan Han ◽  
Ju Lee
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Power Factor ◽  
Permanent Magnets ◽  
Electric Motors ◽  
Element Analysis ◽  
Final Model ◽  
Synchronous Reluctance Motor ◽  
Reluctance Motor

In order to improve the efficiency, a line-start synchronous reluctance motor (LS-SynRM) is studied as an alternative to an induction motor (IM). However, because of the saliency characteristic of SynRM, LS-SynRM have a limited power factor. Therefore, to improve the efficiency and power factor of electric motors, we propose a line-start permanent magnet assistance synchronous reluctance motor (LS-PMA-SynRM) with permanent magnets inserted into LS-SynRM. IM and LS-SynRM are selected as reference models, whose performances are analyzed and compared with that of LS-PMA-SynRM using a finite element analysis. The performance of LS-PMA-SynRM is analyzed considering the position and length of its permanent magnet, as well as its manufacture. The final model of LS-PMA-SynRM is designed for improving the efficiency and power factor of electric motors compared with LS-SynRM. To verify the finite element analysis (FEA) result, the final model is manufactured, experiments are conducted, and the performance of LS-PMA-SynRM is verified.

scholarly journals A Study on the Rotor Design of Line Start Synchronous Reluctance Motor for IE4 Efficiency and Improving Power Factor

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5774
Author(s):  
Hyunwoo Kim ◽  
Yeji Park ◽  
Seung-Taek Oh ◽  
Hyungkwan Jang ◽  
Sung-Hong Won ◽  
...  
Keyword(s):  
Power Factor ◽  
Industrial Applications ◽  
Element Analysis ◽  
Final Model ◽  
Rotor Design ◽  
Synchronous Reluctance Motor ◽  
Motor Efficiency ◽  
Objective Performance ◽  
Reluctance Motor ◽  
International Regulations

As international regulations of motor efficiency are strengthened, the line-start synchronous reluctance motor (LS-SynRM) is being studied to improve the efficiency of the electrical motor in industrial applications. However, in industrial applications, the power factor is also an important performance index, but the LS-SynRM has poor power factor due to the saliency characteristic. In this paper, the rotor design of LS-SynRM is performed to improve the efficiency and power factor. First, the barrier design is performed to improve the efficiency and power factor using the response surface method (RSM). Second, the rotor slot design is performed according to the length of bar for synchronization. Lastly, the rib design is performed to satisfy the power factor and the mechanical reliability. The final model through the design process is analyzed using finite element analysis (FEA), and the objective performance is satisfied. To verify the FEA result, the final model is manufactured, and experiment is performed.

scholarly journals Design and Analysis of Two Permanent-Magnet-Assisted Bearingless Synchronous Reluctance Motors with Different Rotor Structure

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 879
Author(s):  
Yizhou Hua ◽  
Huangqiu Zhu ◽  
Min Gao ◽  
Zongyou Ji
Keyword(s):  
Permanent Magnet ◽  
Power Factor ◽  
Permanent Magnets ◽  
Torque Density ◽  
Synchronous Reluctance Motor ◽  
Salient Pole ◽  
Reluctance Motor ◽  
Low Torque ◽  
Force Ripple ◽  
Rotor Structure

The traditional bearingless synchronous reluctance motor (BSynRM) with salient pole rotor has some drawbacks such as high suspension force ripple, low torque density and low power factor. To overcome the above shortcomings, the permanent-magnet-assisted bearingless synchronous reluctance motor (PMa-BSynRM) is proposed. In this paper, two types of PMa-BSynRM rotors with the same number of permanent magnets but different magnetic barrier structures are designed. A traditional BSynRM with a salient pole rotor is introduced, and the electromagnetic and vibration characteristics of the three BSynRM are analyzed and compared. Firstly, the rotor structures of the two PMa-BSynRMs are designed, and the operation principle of the BSynRM is introduced. Secondly, electromagnetic characteristics of the three motors are analyzed and compared in detail using FEA software. Thirdly, the vibration analysis of the three motors is carried out. Finally, the experimental prototype platforms are built. The FEA and experimental results verify that the designed PMa-BSynRM can improve the power factor and torque density of traditional BSynRMs, and the most superior BSynRM among the three is identified.

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