Torque ripple minimisation of switched reluctance motor using sense coils

Reddy, Battu Prakash; Vemula, Janaki Ramaiah; Keerthipati, Sivakumar

doi:10.1049/iet-epa.2019.0787

Cited by 3 publications

(3 citation statements)

References 26 publications

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“…The Direct Instantaneous Torque Control (DITC) and Current Control (CC) have been implemented instantaneously to control the phases, which delivers low ripple for moderate and high-speed operations [10]. The sense coil mechanism implemented by calculating the instantaneous inductance, generates a current profile to diminish the ripple and copper losses [11]. The PFC is necessary in SR motors and so several topologies employed for obtaining the PFC.…”

Section: Introductionmentioning

confidence: 99%

Optimized Power Factor Correction for High Speed Switched Reluctance Motor

Preethishri¹,

Roseline²,

Murugesan³

et al. 2023

Intelligent Automation &Amp; Soft Computing

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The Power Factor Correction (PFC) in Switched Reluctance (SR) motor is discussed in this article. The SR motors are applicable for multiple applications like electric vehicles, wind mills, machineries etc. The doubly salient structure of SR motor causes the occurrence of torque ripples, which affects the power factor of the motor. To improve the power quality, the power factor has to be corrected and the ripples have to be minimized. In order to achieve these objectives, a novel power factor correction (PFC) method is proposed in this work. Here, the conventional Diode Bridge Rectifier (DBR) is replaced by a Bridgeless Hybrid Resonant (HR) converter, which assists in improvising the output in a wider range. The converter is chosen because of having variety of beneficial measures including high gain. The converter's output is fed to the SR motor by means of an asymmetric Bridge Resonant (BR) converter. The proposed converter operates in continuous mode of conduction with the switching frequency of 10 KHz. A hysteresis current controller and Proportional Integral (PI) controller are utilized for reducing the harmonics in the source current along with the regulation of output voltage. In addition, the speed control of SR motor is accomplished by means of the Whale Optimization Algorithm (WOA) assisted PI controller. The proposed methodology is effective for the control of unity power factor, torque and current ripples. The Total Harmonic Distortion (THD) of the source current is also minimized, which suits the standard of International Electrotechnical Comission IEC 61000-3-2. By this methodology, the power factor of 0.99 is achieved with 97% efficiency and 3.92% THD. The proposed methodology is validated in simulation by MATLAB and in hardware by FPGA Spartan 6E.

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Section: Introductionmentioning

confidence: 99%

Optimized Power Factor Correction for High Speed Switched Reluctance Motor

Preethishri¹,

Roseline²,

Murugesan³

et al. 2023

Intelligent Automation &Amp; Soft Computing

View full text Add to dashboard Cite

show abstract

“…Therefore, finite element analysis and current profiling adjustment can effectively reduce torque ripple through torque error [28]. To obtain the inductance value and change rate in the coefficient of torque formula, injecting high-frequency voltage is feasible [29]. The coefficient of the relationship between compensation current and torque error is complex.…”

Section: Introductionmentioning

confidence: 99%

Torque Ripple Suppression of Switched Reluctance Motor with Reference Torque Online Correction

et al. 2023

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High torque ripple dramatically affects the switched reluctance motor (SRM) application. To reduce the torque ripple, a reference torque neural network (RTNN) is proposed to adjust the reference torque online. Firstly, the RTNN is built on the torque sharing function (TSF) method. Furthermore, the RTNN is designed as a single-input and -output network. As the periodic relationship between the torque ripple and the rotor angle, the rotor angle constitutes the central node parameter of the implicit function in RTNN. Therefore, one-step adjustment of the RTNN can perform well at restraining reference torque. Lastly, the torque error is used to adjust the parameters of RTNN to reduce the torque ripple. In the MATLAB environment, through the simulation comparison with fuzzy torque and PD current compensation method, the effectiveness of RTNN at torque ripple suppression is proven with different loads and speeds.

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“…Authors in [6] and [7] have modified the current shape for operating in the high-speed region with reduced torque ripple by employing numerical simulations. In [8], a dynamic current profiling system is proposed using sense coils. However, besides being an invasive method, additional signal processing with filters is required.…”

Section: Introductionmentioning

confidence: 99%

A Two-Step Control Approach for Torque Ripple and Vibration Reduction in Switched Reluctance Motor Drives

et al. 2022

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The objective of this work is to reduce the torque ripple and vibration in Switched Reluctance Motor (SRM) drives. To achieve such a goal, a two-step approach is proposed. In the first step, the reference current is profiled using an optimization method, aimed to reduce the torque pulsation. In the second, the optimum current profile is applied to the SRM through an adaptive hysteresis band controller to actively cancel the radial vibration. The proposed technique uses an optimization procedure based on the Field Reconstruction Method (FRM) and Non-Derivative Optimization Method to find the optimal current profile that mitigates the torque pulsation, however, the investigation has shown that the proposed excitation leads to a higher radial vibration, which has been mitigated by using an adaptive hysteresis band controller. The theoretical basis for the proposed approach is initially presented, followed by system modeling and simulation. In addition, experimental verification has been conducted using an 8/6 SRM to show the feasibility of the proposed approach. The proposed method alleviates the acoustic noise and torque pulsation in SRM and offers an effective step towards the prevalent use of SRM in a wide range of applications.

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Torque ripple minimisation of switched reluctance motor using sense coils

Cited by 3 publications

References 26 publications

Optimized Power Factor Correction for High Speed Switched Reluctance Motor

Optimized Power Factor Correction for High Speed Switched Reluctance Motor

Torque Ripple Suppression of Switched Reluctance Motor with Reference Torque Online Correction

A Two-Step Control Approach for Torque Ripple and Vibration Reduction in Switched Reluctance Motor Drives

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