Abstract
Switched reluctance motor (SRM) provide a potential candidate for electric vehicle (EV) applications due to rigid structure, potentially low production cost, the absence of permanent magnets, excellent power-speed characteristics, and high reliability and robustness. This paper aims to review the current research on the design, winding topologies, converter topologies, and control methods of switched reluctance motors (SRMs). Torque ripple and vibration are the main drawbacks of SRMs, which constrain their application. To conquer these drawbacks, multi-phase SRMs (MSRMs), optimum structure, and control methods of SRMs have been utilized over the past decades. In this paper, MSRMs with multiple combinations of stator/rotor poles and winding arrangements are investigated. Different converter topologies are compared, and a full-bridge converter is suitable for SRMs used in EVs. Torque sharing function, direct torque control, and direct instantaneous torque control are the main control methods to reduce the torque ripple of SRMs, which have been comprehensively summarized.
Highlights
IntroductionHigh reliability and robustness appropriate to the vehicle environment low acoustic noise Acceptable cost
In even number phase SRMS, such as six-phase Switched reluctance motor (SRM), when the arrangement of stator magnetic polarity usually is NS mode, the magnetic field is unsymmetrical, and mutual inductance will be generated between phases, and that means the faulttolerance will be reduced, a decoupled winding connection is needed in even number phase SRMs.[50,51,52]
SRMs are found to be much suitable for electric vehicle applications, high levels of torque pulsation and acoustic noise made SRMs unsatisfied with the applications in EVs
Summary
High reliability and robustness appropriate to the vehicle environment low acoustic noise Acceptable cost. Since the permanent-magnet (PM) machines inherently own the merits of high torque/power density and efficiency due to the utilization of high-energy PM. High torque for starting, low speed and hill-. Jiangsu, China 2Automotive Engineering Research Institute, Jiangsu University, climbing, and high power for high-speed cruising Zhenjiang, Jiangsu, China. With a constant power operating range of around 3–4 times the base speed. High efficiency over the wide speed and torque ranges, including low torque operation Intermittent overload capability, typically twice. Corresponding author: Xiaodong Sun, Automotive Engineering Research Institute, Jiangsu University, Xuefu Road 301, Zhenjiang, Jiangsu 212013, China. Electric vehicles (EVs) and hybrid electric vehicles (HEVs) can reduce the depletion of fossil fuels and global warming, and they are becoming more prevalent to replace traditional fuel vehicles.[1,2,3,4,5,6,7] Electrical machines and drives play an important role in the development of EVs, the requirements of traction motor drives for EVs can be summarized as[8,9,10,11,12,13,14]
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