Switched reluctance motors and drive systems for electric vehicle powertrains: State of the art analysis and future trends

Lan, Yuanfeng
Benomar, Yassine
Deepak, Kritika
Baghdadi, Mohamed El
Bostancı, Emine
Hegazy, Omar
This paper presents a detailed literature review on switched reluctance motor (SRM) and drive systems in electric vehicle (EV) powertrains. SRMs have received increasing attention for EV applications owing to their reliable structure, fault tolerance ability and magnet free design. The main drawbacks of the SRM are torque ripple, low power density, low power factor and small extended speed range. Recent research shows that multi-stack conventional switched reluctance motors (MSCSRM) and multi-stack switched reluctance motors with a segmental rotor (MSSRM-SR) are promising alternative solutions to reduce torque ripples, increase torque density and increase power factor. Different winding configurations such as single-layer concentrated winding (SLC), single layer mutually coupled winding (SLMC), double layer concentrated winding (DLC), double layer mutually coupled winding (DLMC) and fully-pitched winding (FP) are introduced in the literature in recent years to increase average torque and to decrease torque ripples. This research analyzes winding methods and structure of the SRMs, including conventional and segmental rotors. They have been compared and assessed in detail evaluation of torque ripple reduction, torque/power density increase, noise/vibration characteristics and mechanical structure. In addition, various drive systems are fully addressed for the SRMs, including conventional drives, soft-switching drives, drives with standard inverters and drives with an integrated battery charger. In this paper, the SRM control methods are also reviewed and classified. These control methods include strategies of torque ripple reduction, fault-diagnosis, fault-tolerance techniques and sensorless control. The key contributions of this paper provide a useful basis for detailed analysis of modeling and electromechanical design, drive systems, and control techniques of the SRMs for EV applications.


TRIPATHY, SC (Elsevier BV, 1994-02-01)
This paper presents the results of experimental work on flywheel energy storage systems for city buses. An efficient electronic hardware scheme is used to start the flywheel and traction machines. This scheme has been designed, fabricated and tested in our laboratory. A low frequency a.c. has been derived from an inverter fed from a three-phase uncontrolled rectifier to start the commutatorless d.c. motors. Commutation is achieved by using a capacitor and two auxiliary thyristors, whose ratings could be a f...
Optimum pole combination to maxmize torque density in switched reluctance motors for electric vehicle applications
Tarvirdilu Asl, Rasul; Ertan, Hulusi Bülent; Department of Electrical and Electronics Engineering (2016)
Nowadays, using Switched Reluctance Motors (SRM) as a substitute for Interior Permanent Magnet Synchronous Motors (IPMSMs) in hybrid electric vehicle applications is of great interest. The main advantage of using SRM is elimination of permanent magnet materials in machine structure. In addition, simple and robust structure, high rotational speeds and operation at higher temperatures are other benefits of using switched reluctance motors. In this study, a combined analytical and Finite Element (FE) based met...
Energy Optimal Controller for Electric Vehicles on Partially Icy Roads with Heuristic Skidding Compensation
Ahiska, Kenan; Özgören, Mustafa Kemal; Leblebicioğlu, Mehmet Kemal (2015-10-16)
In this study, a mathematical model is constructed for an electric vehicle. An energy optimal controller is designed for the gross motion model of the vehicle moving on a positive constant slope road with some icy parts. The energy optimal controller takes torque, speed and battery constraints into account. The loss of control during skidding period is compensated with an additional control command based on heuristics. The compensation is based on an enrichment of applied control input throughout the sectio...
Design of smart controllers for hybrid electric vehicles
Özen, Ekin; Dölen, Melik; Department of Mechanical Engineering (2005)
This thesis focuses on the feasibility of designing a commercial hybrid electric vehicle (HEV). In this work, relevant system models are developed for the vehicle including powertrain, braking system, electrical machines and battery. Based on these models ten different HEV configurations are assembled for detailed assessment of fuel consumption. This thesis also proposes a smart power management strategy which could be applied to any kind of HEV configuration. The suggested expert system deals with the exte...
Tolerance based reliability of an analog electric circuit
Çakır, Sinan; Serin, Yaşar Yasemin; Department of Operational Research (2011)
This thesis deals with the reliability analysis of a fuel pump driver circuit (FPDC), which regulates the amount of fuel pumped to a turbojet engine. Reliability analysis in such critical circuits has great importance since unexpected failures may cause serious financial loss and even human death. In this study, two types of reliability analysis are used: “Worst Case Circuit Tolerance Analysis” (WCCTA) and “Failure Modes and Effects Analysis” (FMEA). WCCTA involves the analysis of the circuit operation unde...
Citation Formats
Y. Lan et al., “Switched reluctance motors and drive systems for electric vehicle powertrains: State of the art analysis and future trends,” Energies, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85106256889&origin=inward.