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.

Finite Element Analysis of Permanent Magnet Induction Generator

2012 ◽  
Vol 614-615 ◽  
pp. 1250-1253
Author(s):  
Tong Shan Diao ◽  
Xiu He Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Renewable Energy ◽  
Permanent Magnet ◽  
Power Factor ◽  
Permanent Magnets ◽  
Induction Generator ◽  
Element Analysis ◽  
Energy Applications ◽  
Design Requirements

Many reliable energy conversion methods are constantly being sought for renewable energy applications. The permanent magnet induction generator is a new concept which uses permanent magnets to provide the flux in the machine. This will lead to an improved power factor and higher efficiency. This type of generator is a very attractive renewable solution. In this paper ,firstly,introduce the structure and principle of permanent magnet induction generator. Secondly, the dynamic starting performance of this machine is studied. Finally, finite element analysis and simulation are carried out, the results verify the performance of the machine meet the design requirements.

OPTIMIZATION OF THE FORCE CHARACTERISTIC OF ROTARY MOTION TYPE OF ELECTROMAGNETIC ACTUATOR BASED ON FINITE ELEMENT ANALYSIS

2016 ◽  
Vol 78 (9) ◽  
Author(s):  
Izzati Yusri ◽  
Mariam Md Ghazaly ◽  
Esmail Ali Ali Alandoli ◽  
Mohd Fua'ad Rahmat ◽  
Zulkeflee Abdullah ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Thrust Force ◽  
Rotary Motion ◽  
Electromagnetic Actuator ◽  
Element Analysis ◽  
Electromagnetic Actuators ◽  
Motion Type

This paper addresses a rotary motion type of electromagnetic actuator that compares two types of electromagnetic actuators; i.e the Permanent Magnet Switching Flux (PMSF) and the Switching Reluctance (SR) actuator. The Permanent Magnet Switching Flux (PMSF) actuator is the combination of permanent magnets (PM) and the Switching Reluctance (SR) actuator. The force optimizations are accomplished by manipulating the actuator parameters; i.e. (i) the poles ratio of the stator and rotor; (ii) the actuator’s size; (iii) the number of winding turns; and (iv) the air gap thickness between the stator and rotor through Finite Element Analysis Method (FEM) using the ANSYS Maxwell 3D software. The materials implemented in the actuator’s parameters optimizations are readily available materials, especially in Malaysia. The excitation current used in FEM analysis for both actuators was between 0A and 2A with interval of 0.25A. Based on the FEM analyses, the best result was achieved by the Permanent Magnet Switching Flux (PMSF) actuator. The PMSF actuator produced the largest magnetostatic thrust force (4.36kN) once the size is scaled up to 100% with the input current, 2A respectively. The maximum thrust force generated by the Switching Reluctance (SR) actuator was 168.85μN, which is significantly lower in compared to the results of the PMSF actuator. 

Slot/Pole Ratio Design of Tubular Permanent Magnet Linear Synchronous Motor

2011 ◽  
Vol 179-180 ◽  
pp. 1303-1308
Author(s):  
Guang Hui Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Synchronous Motor ◽  
Current Analysis ◽  
Key Factors ◽  
Element Analysis ◽  
Linear Synchronous Motor ◽  
Element Technique

In terms of various applications of linear motor, there are different design objectives with varying concerns. In this paper, the objective is to obtain the slot/pole ratio for tubular permanent-magnet linear synchronous motor (TPMLSM). Direct-axis current analysis and finite element technique are utilized to investigate the optimal slot/slot ratio design of the TPMLSM. Based on electrical angle drift of slots between two neighboring permanent magnets, the slot/pole ratio (SPR), one of the key factors in design, is deduced by direct-axis current analysis. In contrast to those experiment methods, the proposed technique is convenient and swift; moreover it is proven that the method is efficient by 2-D axisymmetic finite element analysis.

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 Influence of Permanent Magnet Characteristic Variability on the Wind Generator Operation

2017 ◽  
Vol 54 (1) ◽  
pp. 3-11 ◽  
Author(s):  
O. Kudrjavtsev ◽  
A. Kallaste ◽  
A. Kilk ◽  
T. Vaimann ◽  
S. Orlova
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Element Analysis ◽  
Magnet Material ◽  
Permanent Magnet Material ◽  
Output Characteristics ◽  
Different Characteristics ◽  
Generator Output

Abstract The paper discusses problems concerning the influence of permanent magnet material characteristics on the low-speed permanent magnet generator losses and output characteristics. The variability of the magnet material and its effect on the output parameters of the machine has been quantified. The characteristics of six different grades of neodymium permanent magnets have been measured and compared to the supplier specification data. The simulations of the generator have been carried out using transient finite element analysis. The results show that magnet materials from different suppliers have different characteristics, which have a significant influence on the generator output parameters, such as efficiency and power factor.

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