Optimal Stepping Angle for Switched Reluctance Motors: Torque and Efficiency Optimization

Optimal Stepping Angle for Switched Reluctance Motors: Torque and Efficiency Optimization

Literature Review on Switched Reluctance Motors:

 Inquiry

Problem Definition — from Assignment One
What is the ideal range for the stepping angle of a switching reluctance motor to achieve optimum output torque and efficiency?

Response

Literature review task
Switched reluctance motors provide several inherent benefits due to their simple structure and non-wound rotor design. Conversely, it encompasses increased tolerances, little expense, and durability. An operation may have happened under high temperatures and significant temperature variations (Ding et al. 2015). The generation of torque in the switching reluctance motor arises from the orientation and inclination of the rotor poles. It is accomplished by aligning with the excited stator poles. Therefore, it is crucial that the operational concept relies on the variations in magnetic reluctance region. The components are aligned with the rotor's location during a certain stator coil activation.

Nonetheless, torque ripple is an intrinsic disadvantage of the switching reluctance motor. The primary sources of torque encompass geometric structure, including doubly salient motors and excitation windings. The focus is on the stator poles and operational modes. Saturation of magnetism is essential to enhance the torque-to-mass ratio and magnetic field (Bostanci et al. 2017). It is acquired by sequential feeding for various stator windings. In this context, the transmission of the specific phase current is accountable for torque triple.

In addition, the simplicity of prediction and timing design in electronic devices, along with the use of stepper motors, has significantly increased over the years. The stepper motor, classified as a kind of DC motor, is used in many devices and components. Consequently, to achieve an ideal range in the stepping angle of the switching reluctance motor, it is essential to concentrate on maximizing both output torque and efficiency (Shahgholian et al. 2015). The elevated sufficiency of power factors may facilitate efficiencies in the stepping angles.

The segmentation of a whole revolution in a stepper motor facilitates several steps and enhances motor control. The exact places may be initiated and adjusted utilizing the stepper design. The force is often generated by the simplicity of the motor's design process. Kabir and Husain (2016) said that an efficient motor design can guarantee the attainment of process output from the motor. To create an efficient motor design, I will develop a model aimed at reducing power usage via monitoring. This approach enables me to enhance productivity and directly influence the primary aspect, which is cost-effectiveness and usability.

The rotor position is aligned during the deactivation of the position and switches corresponding to the phases that have been switched off. Consequently, the power source will cease the energy of the magnetic field. Additionally, a certain amount of magnetic field energy is required (Wu et al. 2018). It necessitates conversion to mechanized labor and loss. The drive circuit and torque control technique directly influence the topologies that arise with a decreased number of power switches. Furthermore, accelerated excitation and demagnetization are conducted in this regard. Moreover, great efficiency and the elements of a high power factor will contribute to achieving the anticipated results during the continuation of the procedure.

The stepping angle of a switched reluctance motor is an extensive domain that need a focused approach to perform research with a specific outcome. This study aims to determine the ideal range for achieving maximum output torque and efficiency in the stepping angle of a switching reluctance motor. I will develop the motor model using the 2D Adaptive Finite Element Method. I will consistently update my supervisor on the status of the assignment. It will assist in ensuring timely submission to me.

For my study, I will develop a successful grant-winning proposal that includes two components: the formulation of a novel research challenge and an optimal method for monitoring progress. The other factor is the proper preparation of the budget. The primary objective of this study is to determine the appropriate stepping angle range for the switching reluctance motor that constrains maximum output and efficiency.

The torque SRM is generated in the specified direction. It is necessary to be diminished. Conversely, the torque magnitude pertains to the converter or the drive circuit, in addition to the torque control method. Various strategies for enhancing efficiency include adjusting the applied voltage waveform. As speed increases, the back-EMF also rises (Kabir and Husain 2016). The advancement of the turn-on angle is crucial to get the desired outcome before the rotor and stator poles begin to overlap. In the declining power domain, it is crucial to enhance velocity. I will create a block diagram with the MatLab toolbox for SRM and construct a specific approach to describe the concept and formulate an appropriate conclusion. This will assist me in demonstrating the impact of minor variations in the number of spins on the average torque and torque ripple.

The torque generated in SRM is produced to counteract the resistance in the limited mode. The torque magnitude at each stage is proportional to the square of the stage current. The converter or driving circuit regulates it. Additionally, the torque control method is an important component. A diverse array of topologies is developed with a reduced number of efficient switches, resulting in accelerated excitation (Shahgholian et al. 2015). The elevated adequacy, power factor, and substantial power are maintained via ongoing examination of the process. The drive circuit and torque control influence the execution process, particularly for SRM. A perpetual tradeoff exists between the growing elements of effective circumstances and the loss of novel topology (Gao et al. 2017). However, torque is related to both current and the slope of inductance. The torque relative to the square of the current is provided with little regard to the current itself. The polarity of torque must be altered to accommodate the inductance grade and the negative torque region around the rotor location.

Reference List
Bostanci, E., Moallem, M., Parsapour, A. and Fahimi, B., 2017. Opportunities and challenges of switched reluctance motor drives for electric propulsion: a comparative study. IEEE transactions on transportation electrification, 3(1), pp.58-75.

Ding, W., Hu, Y. and Wu, L., 2015. Analysis and development of novel three-phase hybrid magnetic paths switched reluctance motors using modular and segmental structures for EV applications. IEEE/ASME Transactions on Mechatronics, 20(5), pp.2437-2451.

Gao, X., Na, R., Jia, C., Wang, X. and Zhou, Y., 2017. Multi-objective optimization of switched reluctance motor drive in electric vehicles. Computers & Electrical Engineering.

Kabir, M.A. and Husain, I., 2016. Design of mutually coupled switched reluctance motors (MCSRMs) for extended speed applications using 3-phase standard inverters. IEEE Transactions on Energy Conversion, 31(2), pp.436-445.

Shahgholian, G., Sahafi, A.R. and Faiz, J., 2015. Torque ripple reduction in switched reluctance motors–A review. Journal ELECTROMOTION, 22, pp.35-56.

Wu, J., Wang, J., Gan, C., Sun, Q. and Kong, W., 2018. Efficiency Optimization of PMSM Drives Using Field-Circuit Coupled FEM for EV/HEV Applications. IEEE Access.

Selecting quantitative/qualitative approach
1. Selection of quantitative approach: There are two types of data used in the research such as quantitative data and qualitative data. In the present research, quantitative data are required. Numerical analysis values for lifetime as well as discharge the characteristics of steeping angle of switched reluctance motors. Measuring the instruments will be used for collection of data. The numerical values for lifetime as well as discharge are included as criteria for research.

2. Description of the factors
My research engages the use of measuring instruments for collection of quantitative data. Hence, it will not need to work with people directly as the subjects for collection of qualitative data. In order to analyse the optimal range in which stepping angle of switched reluctance motor should be limited to get maximum output torque and efficiency, the researcher will collect numerical data using the measuring instruments. As my research will engage the process of using measuring instruments for collection of data, it will not required to work with people directly.