Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
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Item Modeling and Analysis of Average Torque Control Strategy on Switched Reluctance Motor for E-mobility(Institute of Electrical and Electronics Engineers Inc., 2021) Pillai, A.; Anuradha, S.; Gangadharan, K.V.; Umesht, P.; Bhaktha, S.This paper investigates the Average Torque Control (ATC) approach for an electric scooter application using a 250W, Outer-rotor type, 8/6 Switched Reluctance Motor (SRM). It also employs a search algorithm based on a multi-objective function to determine optimum excitation angles to increase SRM drive performance. The MATLAB/Simulink environment is used to model and analyze the SRM drive control system. The simulation results demonstrate the drive system's smooth efficiency with reduced torque ripple over a speed range due to the optimum turn-on and turn-off angle selection. The ATC technique is selected as an ideal alternative for the SRM drive control system against other control strategies due to the wide-speed range application in an electric scooter. © 2021 IEEE.Item Enhancing Torque performance with Dual Teeth Switched Reluctance Motor: A Novel Approach(Institute of Electrical and Electronics Engineers Inc., 2021) Kumawat, S.; Bhaktha, S.; Gangadharan, K.V.Among the available Electric traction motors, switched reluctance motor (SRM) because of its robustness, simple structure, and magnet-free construction is becoming a potential candidate for Electric vehicle (EV) traction application. However, they possess several drawbacks such as low torque density, high torque ripple, nonlinear characteristics, and complex control. In this paper, a novel design based on the conventional four-phase 8/6 SRM is proposed to enhance torque density. The stator pole of the 8/6 SRM is divided into two parallel split-poles (dual teeth) and correspondingly the number of rotor poles is increased to arrive at the novel 8/22 SRM configuration. A new formula for the design of stator-rotor poles of the novel SRM is introduced. Static analysis (FEA based) has been carried out to determine the torque output. In order to save computation time, a theoretical method based on Equivalent Magnetic Circuit (EMC) model is developed and its accuracy is verified with FEA results. The proposed design is also compared with its classical counterpart 8/6 SRM on the basis of torque output and torque per ampere ratio which are obtained from Static FEA simulation. The results indicated 8/22 SRM has a better torque performance and higher torque per ampere ratio in comparison to 8/6 SRM due to the increased variation of co-energy of the field with respect to rotor position at a constant current. This makes 8/22 SRM a promising candidate for high torque density applications in EVs and industrial applications. © 2021 IEEE.Item Implementation of PWM Speed control for SRM drive using TMS320F28069 Microcontroller(Institute of Electrical and Electronics Engineers Inc., 2023) Manaswi, K.; Jose, N.; Bhaktha, S.; Balasubramanian, B.; Gangadharan, K.V.Switched reluctance motors (SRMs) are a promising alternative to conventional motors in various variable speed applications due to their simple design, low production costs, high starting torque, wide speed range, high reliability, and efficiency. However, they suffer from high torque ripple and system noise, which can be minimized by selecting appropriate control methods and converter topologies. Due to the intricate nature of the control, motor drives may employ digital systems by utilizing high-speed digital signal processors (DSPs) or microcontrollers (MCUs) to achieve superior results which offers the flexibility to implement complex control algorithms with high precision and accuracy. Therefore, this study proposes the implementation of a Voltage PWM control strategy for a Switched Reluctance Motor (SRM) on a compact high-speed microcontroller (TMS320F28069) using Code Composer Studio. This study demonstrates how MCUs can aid in the precise control of SRMs. © 2023 IEEE.Item Methodology for Modelling a Custom SRM Configuration Using MATLAB/Simulink(Institute of Electrical and Electronics Engineers Inc., 2024) Jose, N.; Jayaraman, A.; Bhaktha, S.; Sarma, S.; Balasubramanian, B.; Gangadharan, K.V.Switched Reluctance Motors (SRMs) have gained significant attention in recent years due to their simplicity, robustness, and energy efficiency, making them suitable for various applications such as electric vehicles. However, the development of custom configurations for SRMs presents challenges due to limited options in existing simulation platforms like MATLAB/Simulink. This paper presents a comprehensive methodology for modelling and simulating a custom SRM configuration, specifically a 4-phase, 8/18 Multi-Teeth (MT) SRM, using MATLAB/Simulink. The methodology involves estimating Look-Up Tables (LUTs) using electromagnetic static Finite Element Analysis (FEA), developing mathematical models for phase current and torque, and integrating them into a Simulink model. After that, a closed loop speed control simulation using Hysteresis Current Control (HCC) and Anti-windup PID is applied to the created model. The simulation results demonstrate the effectiveness of the proposed methodology in accurately predicting the motor's performance. Additionally, a comparison with FEA results highlights the model's ability to closely replicate real-world behaviour, despite minor discrepancies attributed to differences in handling mutual phase coupling effects. © 2024 IEEE.