A novel multilayer 8 by 4 switch reluctance machine with ripple reduction

Jahanmahin, M.; Hajihosseinlu, A.; Afjei, E.; Siadatan, Alireza; Tavakoli, Alireza

doi:10.1109/speedam.2012.6264447

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…Compared to the CSRM, the proposed SRM is easier to produce due to the geometry factor: it is easier to configure to any number of phases. In [35], a two-stack SRM was introduced, which can achieve a torque ripple reduction. The two-stack SRM from publication [36] achieved a torque ripple reduction.…”

Section: Multi-stack and Multi-layer Structure Conventional Srmmentioning

confidence: 99%

Switched Reluctance Motors and Drive Systems for Electric Vehicle Powertrains: State of the Art Analysis and Future Trends

et al. 2021

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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.

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Section: Multi-stack and Multi-layer Structure Conventional Srmmentioning

confidence: 99%

Switched Reluctance Motors and Drive Systems for Electric Vehicle Powertrains: State of the Art Analysis and Future Trends

et al. 2021

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“…Multi‐layered switched reluctance motors provided additional 25% decrease in the ripple [57–59]. Notches on the stator and rotor teeth also helped in achieving 38% reduced torque ripple [60–62] while, creating non‐circular air gap in the machine by suitable stator and rotor pole shaping and slotting brought down the ripple torque by 42% [63–66].…”

Section: Torque Ripplementioning

confidence: 99%

“… Summary on torque ripple design strategies [46–68] Unintentional overlook of data is possible, though the information provided here is to the best of the author's knowledge…”

Section: Torque Ripplementioning

confidence: 99%

Review based on losses, torque ripple, vibration and noise in switched reluctance motor

Seshadri

Lenin

2019

IET Electric Power Applications

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Some key features to be satisfied by electric motors catering a wide range of applications are high specific power, lower manufacturing cost, rugged construction, and fault‐tolerant operation. Switched reluctance motor is one such motor technology satisfying all the above requirements and is an emerging competitor to the induction and permanent magnet motors in domestic, industrial and electric vehicle applications. The present‐day research on this motor is moving towards improving efficiency at lower speeds, power density, and the torque density. Certain challenges in achieving the same are (a) minimising the losses, (b) mitigation of torque ripple, noise, and vibration, and (c) material advancements. A review based on the estimation and mitigation techniques of each of these over the past three to four decades has been dealt with in this study. The salient features and results in each section provide a clear understanding of how each of these challenges can be overcome in the aspect of design and control strategies.

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“…As for the design, some particular structures also have the feature of reducing torque ripple and noise significantly. For example, a multilayer SRM was designed and reported in [31]. In papers [32] and [33],…”

Section: Switched Reluctance Motor On E-bikementioning

confidence: 99%

External-Rotor <inline-formula><tex-math notation="LaTeX">$6-10$</tex-math></inline-formula> Switched Reluctance Motor for an Electric Bicycle

Lin

Schofield

Emadi

2015

IEEE Trans. Transp. Electrific.

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As a cost-effective, healthy, and environmentally friendly personal mode of transportation, electric bicycles (E-bikes) are gaining an increasing market share from conventional bicycles and automobiles. Considering the legal rules in Ontario, Canada, a 500W motor makes the E-bike more attractive for travelling use. At the same time, the simple structure, high torque and power density, as well as the low cost of the switched reluctance machine (SRM) makes it a strong candidate for E-bikes.

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A novel multilayer 8 by 4 switch reluctance machine with ripple reduction

Cited by 3 publications

References 8 publications

Switched Reluctance Motors and Drive Systems for Electric Vehicle Powertrains: State of the Art Analysis and Future Trends

Switched Reluctance Motors and Drive Systems for Electric Vehicle Powertrains: State of the Art Analysis and Future Trends

Review based on losses, torque ripple, vibration and noise in switched reluctance motor

External-Rotor <inline-formula><tex-math notation="LaTeX">$6-10$</tex-math></inline-formula> Switched Reluctance Motor for an Electric Bicycle

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