A Novel Average Torque Control of Switched Reluctance Motor Based on Flux–Current Locus Control

Fan, Jiayi; Lee, Yongkeun

doi:10.1109/cjece.2020.2971732

Cited by 13 publications

(12 citation statements)

References 14 publications

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“…The proposed method has the fixed switching frequency and less computational load. Based on flux-current locus control, a novel average torque control method of the SRM was proposed by [103]. The proposed controller gets more precise torque and a better energy conversion ratio.…”

Section: Srm Control Methodsmentioning

confidence: 99%

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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: Srm Control Methodsmentioning

confidence: 99%

“…The proposed controller gets more precise torque and a better energy conversion ratio. Figure 17 shows the controller diagram in [103]. With the reference torque T*, the next point of flux-linkage, current and position are calculated by an average torque controller.…”

Section: Srm Control Methodsmentioning

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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“…Therefore, the torque controller is essential for EVs. In SRM, two torque control strategies are presented in the literature: ATC and ITC [20,31]. In ATC, the reference current is maintained at a constant value throughout the conduction zone.…”

Section: Torque Control Strategiesmentioning

confidence: 99%

“…Based on the hybrid flux‐current control, a novel Average Torque Controller (ATC) is proposed in ref. [20] that enhances the SRM's energy conversion ratio and realises more precise torque tracking, complicating the control system. In refs.…”

Section: Introductionmentioning

confidence: 99%

Torque ripple reduction of switched reluctance motor using direct instantaneous torque control and adaptive turn‐on technique for electric vehicle applications

Quraan

Számel

2023

IET Electric Power Appl

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Direct Instantaneous Torque Control (DITC) with an adaptive turn‐on angle technique is presented in this paper to improve the torque ripple of the Switched Reluctance Motor (SRM) for Electric Vehicle applications. Torque ripple suppression is achieved by employing two operating modes during the commutation interval. First, both the outgoing and incoming phase states are modified to track the required torque during the incoming phase's minimum inductance area. As soon as the incoming phase leaves its minimum inductance zone, the outgoing phase is demagnetised, and only the incoming phase state is modified for torque tracking. In addition, a closed‐loop regulator is used to dynamically control the turn‐on angle that drives the incoming current to reach its first peak at the instant of switching between the two operation modes when the rotor and stator poles initiate overlap, thus increasing the motor's efficiency. Simulation results showed that the proposed control method has superior advantages over the traditional DITC and Average Torque Controller. Furthermore, the simulation results were verified experimentally using a four‐phase 4kW, 8/6 SRM prototype.

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“…erefore, the majority of scientific research in this field is hot for most researchers. In Reference [17], a novel average torque control of SRM is introduced, which is based on flux-current locus control. In practice, it may be difficult to acquire accurate flux.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Modified PWM Direct Instantaneous Torque Control System for SRM

Cheng

2021

Mathematical Problems in Engineering

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Torque ripple is a defect of switched reluctant motors. DITC (direct instantaneous torque control) is harnessed to solve the problem as a traditional method, which is superior to TSF (torque sharing function). In this paper, a new controller is proposed with modified hysteresis and PWM in DITC. With the modified algorithm, the torque error will be reduced with PWM in DITC. The proposed algorithm is effective to improve sample and 0 status in a period. The modified algorithm is based on application of zero in the asymmetric half bridge, which is implemented as the buffer zone. In case of big torque error, hysteresis will mitigate error under the characteristic of fast responding. In case of small errors, the modified PWM will solve torque error in the equivalent strategy, which has adopted the essence of the impulse equivalent method. The modified controller is designed to reduce responding time and minimize the torque ripple under the proposed algorithm, which has been designed to harness different functions in different torque errors. Based on final simulation and experimental results, responding speed and reduction of output torque ripple are enhanced effectively.

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A Novel Average Torque Control of Switched Reluctance Motor Based on Flux–Current Locus Control

Cited by 13 publications

References 14 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

Torque ripple reduction of switched reluctance motor using direct instantaneous torque control and adaptive turn‐on technique for electric vehicle applications

Modified PWM Direct Instantaneous Torque Control System for SRM

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