A novel 4/4 Multilayer Switched Reluctance Motor with 4 magnetically independent layers

Siadatan, Alireza; Najmi, Vahid; Afjei, E.

doi:10.1109/acemp.2011.6490606

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…In [29], a 6/4 two-stack SRM has been introduced. In [32], a 4-layer SRM was introduced. In [33], two field-assisted switched reluctance generators (SRGs) have been compared.…”

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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“…In [29], a 6/4 two-stack SRM has been introduced. In [32], a 4-layer SRM was introduced. In [33], two field-assisted switched reluctance generators (SRGs) have been compared.…”

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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“…6). Using (2), where T max is the peak torque, T min is the minimum torque of the profile and T avr the average, the ST-DSSRMs ripple results to be 21.13%, whereas the FP-DSSRMs is 39.82%. …”

Section: Static Performance Estimationmentioning

confidence: 99%

“…From a magnetic circuit design point of view several attempts of improvement have been pursued. The approach used in [1], [2] is based on the introduction of multiple, magnetically independent layers and rotors attached to each other via a common shaft. The layers exhibit a displacement relative to each other to improve the torque output and torque ripple of the machine.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of two winding configurations for a double stator switched reluctance machine

Cosoroaba

Wang

Fahimi

2014

2014 International Conference on Electrical Machines (ICEM)

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This paper compared the effect of full-pitched and tooth windings on performance of double stator switched reluctance machines. The main scope of the research presented here is to obtain higher power/torque density for an existent double stator switched reluctance machine (DSSRM). The chosen approach is intended to reduce the amount of copper by applying a winding configuration that allows shorter end windings, compared to the commonly used full-pitch windings. Magnetic circuit design alterations are introduced for an effective use of the single-tooth windings. A considerable reduction of weight was achieved and domains were defined in which the use of each of the two winding topology is advantageous, considering static average torque output and copper losses of the two DSSRMs. Furthermore, aspect ratio and torque ripple have been taken into consideration to complete the comparison. Simulation results verify the anticipated effect of the single-tooth windings.

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A Multilayer Brushless DC Motor for Heavy Lift Drones

et al. 2021

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This paper describes the concept of a multilayer brushless DC motor which is suitable for use on unmanned aerial vehicles (UAVs) and capable of carrying a heavy payload. The paper deals with a unique multilayer structure, using three standard stators placed in parallel with a single rotor body, to increase the torque even under low-speed conditions. In this solution, nine inner windings can use different star/delta interconnections to optimize the performance of the BLDC motor on demand. The proposed multilayer BLDC motor solution utilizes the main advantages of BLDC motors, ensuring highly reliable operation, and thus enabling a BLDC motor to be applied to UAVs. This paper gives an overview of the design, assumes an extension with an electronic inner winding switching capability, and provides practical details about realization, testing, and experimental verification. Practical measurements and obtained data are utilized to confirm the approach.

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A novel 4/4 Multilayer Switched Reluctance Motor with 4 magnetically independent layers

Cited by 4 publications

References 10 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

Comparative study of two winding configurations for a double stator switched reluctance machine

A Multilayer Brushless DC Motor for Heavy Lift Drones

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