Comparative Evaluation for an Improved Direct Instantaneous Torque Control Strategy of Switched Reluctance Motor Drives for Electric Vehicles

Hamouda, Mahmoud; Menaem, Amir Abdel; Rezk, Hegazy; Ibrahim, Mohamed N.; Számel, László

doi:10.3390/math9040302

Cited by 22 publications

(15 citation statements)

References 31 publications

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“…In contrast, the electric current is continuously regulated based on torque requirements and rotor position within stroke duration in ITC. Generally, this strategy involves either indirect ITC (IITC), or direct ITC (DITC) [26]. The reference torque in IITC is decomposed between the machine phases based on the TSF to generate the reference current.…”

Section: Torque Control Strategiesmentioning

confidence: 99%

See 1 more Smart Citation

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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Section: Torque Control Strategiesmentioning

confidence: 99%

“…Ref. [26] presents an improved Direct Instantaneous Torque Control (DITC) to reduce torque ripple and optimise torque per ampere and motor efficiency in EV applications. This technique is affected by the accuracy of the torque-to-current conversion technique.…”

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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“…However, the influence of different speeds and different loads on the control effect is not considered. Meanwhile, an improved DITC was proposed in [18], which also involves a simple online torque estimator and a torque error compensator. The opening angle is analytically defined for wide speed operation and maximum torque per ampere (MTPA) production.…”

Section: Introductionmentioning

confidence: 99%

A Three-Interval PWM Duty Cycle Adaptive Method for Torque Ripple Suppression of Switched Reluctance Motor

Huang¹,

Wu²,

Cao³

et al. 2022

PIER M

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Aiming at the problem of excessive torque ripple of switched reluctance motor (SRM), a three-interval PWM duty cycle adaptive control strategy is proposed in this paper. The method changes the PWM duty cycle to adjust the voltage across the windings according to the torque error, divides the interval according to the inductance linear model, and adapts to different PWM duty cycles in different intervals, different speeds, and different torque errors. And the optimal PWM duty cycle group under different rotation speeds is obtained by trial and error, and this duty cycle group is used as the control method to adapt the PWM duty cycle group. Finally, through Matlab/Simulink simulation and motor platform experiments, the three-interval fixed PWM duty cycle control strategy and the three-interval PWM duty cycle adaptive control strategy in this paper are compared. The results show that the three-interval PWM duty cycle adaptive control strategy proposed in this paper has a good torque ripple suppression effect in a wide speed and wide load range.

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“…Because in the high-speed operation of the SRM, it's challenging to track a reference current signal with profiled shape in a short excitation time. The ITC systems can be categorized under direct (DITC) [31]- [35] and indirect (IITC) instantaneous control systems [36]- [42]. In the DITC system, the out torque of the machine is estimated, compared with a reference torque value, and regulated directly via a torque controller.…”

Section: Introductionmentioning

confidence: 99%

“…In [31], an optimized DITC system is implemented. A mathematical expression for the switch-on angle is employed to obtain maximized torque/ampere ratio.…”

Section: Introductionmentioning

confidence: 99%

Research on Novel Hybrid Torque Sharing Function for Switched Reluctance Motors

Al-Amyal

Számel

2022

IEEE Access

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Torque Sharing Function (TSF) approach can be considered a promising method to solve the torque ripple issue in switched reluctance motors (SRMs) drives at low and medium speed ranges. However, at the high-speed operation of the machine, the actual phase current fails to track the reference current profile. This limitation primarily occurs over the demagnetization period of each phase current. Consequently, each phase torque will also fail to track its corresponding reference torque created by the TSF strategy. As a result, of the torque tracking error, a considerable torque ripple will be produced. To address this issue, a novel hybrid TSF is proposed in this research article. The hybrid TSF can adapt during the real-time operation relying on the current (and thus the torque) tracking capability during the magnetization period, which is much higher than during the demagnetization period. At each electrical cycle, the rising part of the incoming phase torque reference is re-profiled to mirror the declining part of the actual torque of the outgoing phases. And therefore, the torque tracking error can be compensated, and a remarkable torque ripple suppression will be attained. Additionally, within the hybrid TSF, an overlap angle controller is also proposed in this work and participated in high-speed operation. The controller keeps monitoring the error between the commanded torque and the actual average torque of the machine, and by adjusting the overlap angle in real-time, the error can be further compensated. Thus, further torque tracking capability is attained. A set of simulation results are presented and favorably compared with other traditional TSF approaches to demonstrate the feasibility and validity of the proposed hybrid TSF.INDEX TERMS Switched reluctance motor, hybrid torque sharing function, indirect instantaneous torque control.

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Comparative Evaluation for an Improved Direct Instantaneous Torque Control Strategy of Switched Reluctance Motor Drives for Electric Vehicles

Cited by 22 publications

References 31 publications

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

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

A Three-Interval PWM Duty Cycle Adaptive Method for Torque Ripple Suppression of Switched Reluctance Motor

Research on Novel Hybrid Torque Sharing Function for Switched Reluctance Motors

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