Vibration analysis of E-core flux reversal free stator switched reluctance motor

Circuit World ◽  
2020 ◽  
Vol 46 (4) ◽  
pp. 325-334
Author(s):  
Prabhu Sundaramoorthy ◽  
Balaji M. ◽  
Suresh K. ◽  
Ezhilventhan Natesan ◽  
Mohan K.
Keyword(s):  
Vibration Analysis ◽  
Switched Reluctance Motor ◽  
Torque Ripple ◽  
Vibration Measurement ◽  
Electrical Machine ◽  
Element Analysis ◽  
Content Type ◽  
Switched Reluctance ◽  
Flux Reversal ◽  
Reluctance Motor

Purpose The main purpose of this research is to investigate finite-element analysis (FEA) on flux reversal-free stator switched reluctance motor (FRFSSRM) for industrial applications. The vibration analysis for an electrical machine is essential because of the acoustic noises. The acoustic noises originate by coincidence of natural frequencies of motor with the vibration frequencies. Design/methodology/approach The identification with the performance for FRFSRM by torque ripple, vibration. The vibration of the machine is because of unbalanced electromagnetic forces. The mutual coupled winding and a common pole between two adjacent exciting poles reduce these unbalanced forces. Findings The accelerometer is used to monitor the vibration amplitude in transient mode. A comparison study shows that the vibration is less in the E-core SRM than in the conventional flux reversal SRM. Originality/value The shorter flux path reduces the torque ripple and vibration content in SRM. This research article mainly focuses on the parameters such as vibration and torque ripple. The vibration of FRFSRM is identified by accelerometer; ANSYS Package predicts the simulation of the vibration measurement. The dynamic behaviors of this E-core SRM model with rated conditions the vibration had predicted.

Analysis of torque ripple and fault-tolerant capability for a 16/10 segmented switched reluctance motor in HEV applications

2019 ◽  
Vol 38 (6) ◽  
pp. 1725-1737
Author(s):  
Xiaodong Sun ◽  
Jiangling Wu ◽  
Shaohua Wang ◽  
Kaikai Diao ◽  
Zebin Yang
Keyword(s):  
Fault Tolerant ◽  
Switched Reluctance Motor ◽  
Torque Ripple ◽  
Experimental Results ◽  
Element Analysis ◽  
Content Type ◽  
Switched Reluctance ◽  
Output Torque ◽  
Reluctance Motor ◽  
Lower Torque

Purpose The torque ripple and fault-tolerant capability are the two main problems for the switched reluctance motors (SRMs) in applications. The purpose of this paper, therefore, is to propose a novel 16/10 segmented SRM (SSRM) to reduce the torque ripple and improve the fault-tolerant capability in this work. Design/methodology/approach The stator of the proposed SSRM is composed of exciting and auxiliary stator poles, while the rotor consists of a series of discrete segments. The fault-tolerant and torque ripple characteristics of the proposed SSRM are studied by the finite element analysis (FEA) method. Meanwhile, the characteristics of the SSRM are compared with those of a conventional SRM with 8/6 stator/rotor poles. Finally, FEA and experimental results are provided to validate the static and dynamic characteristics of the proposed SSRM. Findings It is found that the proposed novel 16/10 SSRM for the application in the belt-driven starter generator (BSG) possesses these functions: less mutual inductance and high fault-tolerant capability. It is also found that the proposed SSRM provides lower torque ripple and higher output torque. Finally, the experimental results validate that the proposed SSRM runs with lower torque ripple, better output torque and fault-tolerant characteristics, making it an ideal candidate for the BSG and similar systems. Originality/value This paper presents the analysis of torque ripple and fault-tolerant capability for a 16/10 segmented switched reluctance motor in hybrid electric vehicles. Using FEA simulation and building a test bench to verify the proposed SSRM’s superiority in both torque ripple and fault-tolerant capability.

Torque ripple reduction of switched reluctance motor using fuzzy control

2016 ◽  
Vol 33 (6) ◽  
pp. 1668-1679 ◽  
Author(s):  
Ming-Shyan Wang ◽  
Seng-Chi Chen ◽  
Wei-Chin Fang ◽  
Po-Hsiang Chuang
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Control ◽  
Pulse Width Modulation ◽  
Switched Reluctance Motor ◽  
Torque Ripple ◽  
Motor Speed ◽  
Content Type ◽  
Switched Reluctance ◽  
Reluctance Motor ◽  
Future Work

Purpose – Extensive efforts have been conducted on the improvement of torque ripple in switched reluctance motor (SRM) drive. The purpose of this paper is to estimate initial on time of pulse-width modulation (PWM) and turn-off angle using the motor speed and rotor angle by fuzzy logic. Design/methodology/approach – A fuzzy logic control together with the PWM technique and turn-off angle are used to improve torque ripple and dynamic response. Findings – After determining initial on time of PWM, the rise slope of phase current is increased. Research limitations/implications – Future work will consider to increase the complex of the fuzzy control to adaptively tune parameters and achieve excellent results. Practical implications – The experimental results of the proposed method are presented to show the effectiveness. Originality/value – This paper achieves SRM control by one special PWM technique which is seldom studied.

Customized shape optimization of switched reluctance motor using B-Splines

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ghassem Faezian ◽  
Ahmad Darabi ◽  
Nader Sargolzaei
Keyword(s):  
Objective Function ◽  
Optimization Design ◽  
Switched Reluctance Motor ◽  
Element Analysis ◽  
Content Type ◽  
Switched Reluctance ◽  
B Splines ◽  
Electromagnetic Devices ◽  
Design Variables ◽  
Reluctance Motor

Purpose This study aims to design the rotor geometry of switched reluctance motor (SRM) in a completely flexible way. In the proposed method, there is no default geometry for the rotor. The initial geometry of the rotor can start from a circle or any other shape and depending on the required performance takes the final shape during the optimal design. In this way, the best performance, possible with geometric design, can be achieved. Design/methodology/approach The rotor boundary of a 4/2 SRM is defined by a few B-splines. Some control points are located around the rotor and changing their locations causes customized changes in the rotor boundary. Locations of these points are defined as design variables. A 2-D finite element analysis using MATLAB/PDE is applied to the SRM model and sensitivity analysis is used to optimization design by means of minimizing of objective function. Findings The proposed method has many more capabilities for matching different objective functions. For the suggested objective function, while the conventional rotor torque profile difference with the desired torque profile reaches 40%, this difference for B-spline rotor is about 17%. Experimental results from a prototype motor have a close agreement with analysis results. Originality/value The B-splines have been used to design machines and electromagnetic devices. However, this method is used for the first time in design of the whole rotor of a SRM.

scholarly journals Torque Ripple Minimization of a Switched Reluctance Motor using a Torque Sharing Function based on the Overlap Control Technique

2020 ◽  
Vol 10 (2) ◽  
pp. 5371-5376
Author(s):  
H. A. Maksoud
Keyword(s):  
Switched Reluctance Motor ◽  
Torque Ripple ◽  
Control Technique ◽  
Magnetic Characteristics ◽  
Motor Speed ◽  
Element Analysis ◽  
Switched Reluctance ◽  
Reluctance Motor ◽  
Table Model ◽  
Sharing Function

The torque ripple produced in a switched reluctance motor (SRM) can be seen as one of its major drawbacks. It occurs mainly due to the sequential switching of the motor phases and changes in the length of the air gap. The torque sharing functions (TSFs) are the more effective and favorable techniques developed to reduce the torque ripple in SRMs. However, the time responses of instantaneous torque for incoming and outgoing phases during commutation period (CP) are different. In addition, with increasing motor speed the CP decreases and the torque response of the outgoing phase oversteps it. In this paper, a modified torque sharing function based on the change of the overlap angle during the commutation process depending on the motor speed is presented. In the designed control algorithm of the TSFs, the motor speed is has become an input besides the rotor position and the torque command. The commutation time is precisely adjusted enough for the commutating process. The proposed method gives good results in a wide speed range. To deduce the magnetic characteristics of the SRM, finite element analysis (FEA) is applied and a look-up table model is derived. The effectiveness and robustness of the proposed control technique are exhibited in the simulation results.

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