Browsing by Author "Reddy, J.S."

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    Fault-Tolerant Operation of Switched Reluctance Motor Using Cascaded Current and PWM Control With Effect of Commutation Angle Variation
    (Institute of Electrical and Electronics Engineers Inc., 2024) Reddy, J.S.; Parthiban, P.
    This paper presents a proposed fault-tolerant control strategy for Switched Reluctance Motor (SRM) drives, utilizing cascaded current and pulse width modulation (PWM) control mechanisms with commutation angle variation. The study systematically evaluates the mechanical performance of SRM drives by regulating voltage and current to achieve robust dynamic response under various fault conditions. Optimal commutation angles are identified to enhance operational efficiency and balance performance under fault scenarios. The comprehensive simulations use a 4 kW, 4 φ, 8/6 SRM model in MATLAB/Simulink; further, real-time experiments are conducted using FPGA-based modelling with a Controller Hardware-in-Loop (CHIL), setup on the OPAL-RT 4510 platform. The proposed control technique demonstrates high fault tolerance and reliable mechanical performance, making it suitable for variable-speed drive applications. The findings underscore the potential of the proposed control strategy to ensure the robust operation of SRM drives in practical implementations, highlighting its significance for enhancing the reliability and efficiency of electric drive systems. © 1972-2012 IEEE.
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    Speed Control of Fault-Tolerant Switched Reluctance Motor Drive with Current and Voltage PWM Control Techniques
    (Institute of Electrical and Electronics Engineers Inc., 2022) Reddy, J.S.; Parthiban, P.
    Nowadays, switched reluctance motor (SRM) is highly reliable in drive applications because it has a simple construction, high robustness, variable speed applications, low cost, etc. The best advantage of this motor is magnetic independence between the phases and negligible mutual flux linkage between the phases. This drive can operate under one or more fault conditions to maintain rated output without faulted phases, since SRM machines are having fault tolerant capability. In this paper different types of faults that occur in SRM drive are presented and the performance of the closed loop speed control of fault tolerant (open circuit fault) SRM using current and PWM control techniques is analyzed. This control method is applied to an 8/6 SRM prototype when an open circuit fault occurs in semiconductor switch and all the results are verified before and after the fault using MATLAB/Simulink software. © 2022 IEEE.