scholarly journals Synchronous Reluctance Motor vs. Induction Motor at Low-Power Industrial Applications: Design and Comparison

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2190 ◽  
Author(s):  
Nezih Gokhan Ozcelik ◽  
Ugur Emre Dogru ◽  
Murat Imeryuz ◽  
Lale T. Ergene
Keyword(s):  
Low Power ◽  
Permanent Magnet ◽  
Induction Motors ◽  
Power Level ◽  
Industrial Applications ◽  
Permanent Magnet Motors ◽  
Element Analysis ◽  
Synchronous Reluctance Motor ◽  
Three Phase ◽  
Reluctance Motor

Although three-phase induction motors are the most common motor type in industry, a growing interest has arisen in emerging electric motor technologies like synchronous reluctance motors and permanent magnet motors. Synchronous reluctance motors are a step forward compared to permanent magnet motors when the cost of the system is considered. The main focus of this study is low-power industrial applications, which generally use three-phase induction motors. In this study, the synchronous reluctance motor family is compared at three different power levels: 2.2 kW, 4 kW, and 5.5 kW. The aim of this study is to design and compare synchronous reluctance motors, which can be alternative to the reference induction motors. Finite element analysis is performed for the reference induction motors initially. Their stators are kept the same and the rotors are redesigned to satisfy output power requirements of the induction motors. Detailed design, analysis, and optimization processes are applied to the synchronous reluctance motors considering efficiency, power density, and manufacturing. The results are evaluated, and the optimized designs are chosen for each power level. They are prototyped and tested to measure their performance.

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 Modeling and Simulation of Five-Phase Synchronous Reluctance Motor Fed By Five-Phase Inverter

2021 ◽  
Vol 17 (1) ◽  
pp. 1-8
Author(s):  
Namariq Ameen ◽  
Ali Abdulabbas ◽  
Habeeb Nekad
Keyword(s):  
Permanent Magnet ◽  
Automotive Industry ◽  
Pulse Width Modulation ◽  
Voltage Source ◽  
Synchronous Reluctance Motor ◽  
Three Phase ◽  
Reluctance Motor ◽  
Angular Dependency ◽  
Field Excitation ◽  
Sinusoidal Pulse Width Modulation

Five-phase machine employment in electric drive system is expanding rapidly in many applications due to several advantages that they present when compared with their three-phase complements. Synchronous reluctance machines(SynRM) are considered as a proposed alternative to permanent magnet machine in the automotive industry because the volatilities in the permanent magnet price, and a proposed alternative for induction motor because they have no field excitation windings in the rotor, SyRM rely on high reluctance torque thus no needing for magnetic material in the structure of rotor. This paper presents dynamic simulation of five phase synchronous reluctance motor fed by five phase voltage source inverter based on mathematical modeling. Sinusoidal pulse width modulation (SPWM) technique is used to generate the pulses for inverter. The theory of reference frame has been used to transform five-phase SynRM voltage equations for simplicity and in order to eliminate the angular dependency of the inductances. The torque in terms of phase currents is then attained using the known magnetic co-energy method, then the results obtained are typical.

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