scholarly journals Design considerations of switched reluctance motors with bipolar excitation for low torque ripple applications

2013 ◽  
Author(s):  
Cong Ma ◽  
Liyan Qu
Keyword(s):  
Torque Ripple ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Design Considerations ◽  
Low Torque

scholarly journals Design of a Low Torque Ripple Three-Phase SRM for Automotive Shift-by-Wire Actuator

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2329 ◽  
Author(s):  
Grace Firsta Lukman ◽  
Xuan Son Nguyen ◽  
Jin-Woo Ahn
Keyword(s):  
Torque Ripple ◽  
Experimental Result ◽  
The Finite Element Method ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Three Phase ◽  
Electromagnetic Characteristics ◽  
Low Torque ◽  
Pole Surface ◽  
Rotor Structure

The shift-by-wire (SBW) system in vehicles aims to increase performance, safety, and comfort during driving. Switched reluctance motors (SRMs) are simple, resilient, and require only minimum maintenance; these factors make it a good option for use as an SBW actuator. Inherently, SRM generates a higher torque ripple than other AC machines, which can lead to a deterioration of its function. In this paper, a non-uniform air-gap rotor structure combined with the careful positioning of holes near the pole surface is proposed to reduce the torque ripple. The finite element method (FEM) is employed to analyze the electromagnetic characteristics of the design. The proposed motor is manufactured, and experiments are done to verify the performance. The design alone can reduce the torque ripple by 7% and flatten the torque waveform. The experimental result shows that the proposed motor can achieve the desired performance. The estimated torque ripple from the experiment is 26.65%.

On torque ripple reduction in current-fed switched reluctance motors

1999 ◽  
Vol 46 (1) ◽  
pp. 177-183 ◽  
Author(s):  
A.M. Stankovic ◽  
G. Tadmor ◽  
Z.J. Coric ◽  
I. Agirman
Keyword(s):  
Torque Ripple ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Torque Ripple Reduction ◽  
Ripple Reduction

scholarly journals Design Considerations and Selection of Cost-Effective Switched Reluctance Drive for Radiator Cooling Fans

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 917
Author(s):  
Ickjin Son ◽  
Grace Firsta Lukman ◽  
Mazahir Hussain Shah ◽  
Kwang-Il Jeong ◽  
Jin-Woo Ahn
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
Magnetic Characteristics ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Design Considerations ◽  
Cooling Fan ◽  
Cooling Fans ◽  
Power Switches ◽  
Selection Of

Switched reluctance motors (SRMs) are simple in structure, easy to manufacture, magnet-less, brushless, and highly robust compared to other AC motors which makes them a good option for applications that operate in harsh environment. However, the motor has non-linear magnetic characteristics, and it comes with various pole-phase combinations and circuit topologies that causes many difficulties in deciding on which type to choose. In this paper, the viability of SRM as a low-cost, rugged machine for vehicle radiator cooling fan is considered. First, necessary design considerations are presented, then three commonly use types of SRM are analyzed: A 3-phase 6/4, 3-phase 12/8, and a 4-phase 8/6 to find their static and dynamic characteristics so the most suitable type can be selected. Simulation results show that the 8/6 SRM produces the highest efficiency with less phase current which reduces the converter burden. However, with asymmetric half bridge converter, eight power switches are required for 8/6 SRM and thus put a burden on the overall drive cost. As a solution, the Miller converter with only six switches for four phase SRM. To verify the proposed idea, the 8/6 SRM was manufactured and tested. The results show that Miller converter can be used for the proposed SRM with slightly reduced efficiency at 80.4%.

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