scholarly journals Electromagnetic Torque Analysis of SRM 12/8 by Rotor/Stator Pole Angle

2021 ◽  
Vol 11 (3) ◽  
pp. 7187-7190
Author(s):  
D. B. Minh ◽  
L. D. Hai ◽  
T. L. Anh ◽  
V. D. Quoc
Keyword(s):  
Switched Reluctance Motor ◽  
Simulation Method ◽  
Torque Ripple ◽  
Ripple Effect ◽  
Switched Reluctance ◽  
Leakage Flux ◽  
Model And Simulation ◽  
Three Phase ◽  
Reluctance Motor ◽  
Rotor Pole

This paper presents the harmonic torque reduction by the different rotor pole angles of a three-phase 12/8 switched reluctance motor via an analytical model and simulation method. Improving torque performance by stator and rotor angles was applied for three-phase switched reluctance motor at stator pole/rotor pole ratios of 6/4, 8/12, 18/12, and 24/18. The average torque and the torque ripple effect by stator and rotor pole embrace have been recently studied in many projects. Due to the fact that leakage flux, flux density, and inductance are affected by the stator and rotor pole angles non-linear and linear leakage flux curves occur. Many stator and rotor pole angle combinations for the three-phase switched reluctance motor have already been done via a finite element method. In this paper, turn-on and turn-off angles will be figured based on stator and rotor pole embraces.

Comparative study of torque ripple minimization techniques for a three-phase switched reluctance motor

2018 ◽  
Vol 1 ◽  
pp. 270-275
Author(s):  
M.V. De Paula ◽  
◽  
T.A.S. Barros ◽  
P.J. Santos Neto ◽  
R.R. de Souza ◽  
...  
Keyword(s):  
Comparative Study ◽  
Switched Reluctance Motor ◽  
Torque Ripple ◽  
Switched Reluctance ◽  
Three Phase ◽  
Reluctance Motor

scholarly journals Torque Ripple Reduction of Switched Reluctance Motor by Changing the Rotor Pole Tip Radius

2019 ◽  
Vol 8 (4) ◽  
pp. 4256-4259 ◽  
Keyword(s):  
Switched Reluctance Motor ◽  
Torque Ripple ◽  
Fe Analysis ◽  
Switched Reluctance ◽  
Torque Ripple Reduction ◽  
Reluctance Motor ◽  
Doubly Salient ◽  
Rotor Pole ◽  
Ripple Reduction ◽  
Tip Radius

Switched Reluctance Motor has the main limitation of high torque ripple because of its doubly salient structure. This paper presents the Finite Element (FE) analysis of 5 hp, 655 V, 8/6 Switched Reluctance Motor with rotor pole shaping to reduce torque ripple. It is observed that rotor pole tip radius variation significantly affects torque ripple. Tapered rotor pole having high tip radius results into reduced torque ripple. Rotor pole tip radius is changed from 0 to 5 mm in step of 1 mm and FE analysis is carried out to obtain average torque and torque ripple. It is examined that torque ripple is reduced from 69.1 % to 39.3 % with this technique.

scholarly journals Torque Ripple Reduction of Switched Reluctance Motor with Non-Uniform Air-Gap and a Rotor Hole

Machines ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 348
Author(s):  
Grace Firsta Lukman ◽  
Jin-Woo Ahn
Keyword(s):  
High Performance ◽  
Switched Reluctance Motor ◽  
Torque Ripple ◽  
Air Gap ◽  
Switched Reluctance ◽  
Torque Ripple Reduction ◽  
Uniform Region ◽  
Reluctance Motor ◽  
Rotor Pole ◽  
Ripple Reduction

A switched reluctance motor has a very simple structure which becomes its key signature and leads to various advantages. However, because of its double saliency and switching principle, the motor is also known to have a relatively high torque ripple, and this hinders its use as a high-performance drive. In this paper, a method to reduce torque ripple while maintaining average torque is introduced. Two elements are used to achieve this, namely, a non-uniform air-gap on the rotor-pole face and one hole in each non-uniform region, which maintains the saturation level of the air-gap. This approach preserves the mechanical simplicity of the motor and is easy to implement. Simulations and experiments were performed to verify the effectiveness of the proposed design.

Electromagnetic and Vibration Analysis of In-Wheel Switched Reluctance Motor with Notches and Projections for Electric Vehicle Applications

2013 ◽  
Vol 421 ◽  
pp. 34-39 ◽  
Author(s):  
G. Nalina Shini ◽  
V. Kamaraj ◽  
E. Giridharan ◽  
S. Kannan
Keyword(s):  
Electric Vehicles ◽  
Acoustic Noise ◽  
Low Cost ◽  
Switched Reluctance Motor ◽  
Torque Ripple ◽  
Fe Analysis ◽  
Direct Drive ◽  
Switched Reluctance ◽  
Reluctance Motor ◽  
Rotor Pole

With the demand for fuels to cater the needs of day to day usage of vehicles, the best alternative solution is to use electric vehicles. In-wheel Switched Reluctance Motor (SRM) is the best direct drive motor used in electric vehicles owing to its low cost, simplicity, high torque to inertia ratio. Vibration is a major problem which causes acoustic noise. This paper deals with the design and analysis of In-wheel Switched Reluctance Motor which produces high average torque with low vibration. The above desired performance of In-wheel SRM can be obtained by modifying the stator and rotor pole shapes of In-wheel SRM with notches and projections. Electromagnetic analysis of 3 phase 6/8, 1500 rpm In-wheel SRM is done by FEA based CAD package MagNet. Average torque and Torque ripple is obtained from the static torque characteristics. 3D structural FE analysis is done to obtain the modal frequencies of In-wheel SRM. Ansys 14.0 aids in the Structural FE analysis. The performance of modified In-wheel SRM is compared with the conventional In-wheel SRM. The results conclude that the modified In-wheel SRM is superior than the conventional In-wheel SRM in terms of high average torque and low vibration.

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