Control Algorithm for Soft Start of Split-AC-Switched-Reluctance Motor Drives

He, Dingyi; Cai, Wen; Fan, Yi; Clark, Adam; Liang, Jingchen; Li, Gu; Fahimi, Babak

doi:10.1109/tia.2017.2731739

Cited by 7 publications

(2 citation statements)

References 35 publications

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“…In [14], power factor correction (PFC) has been carried out by two controllers that are independently controlled by sliding mode control. SR motor drive with incorporated PFC during the starting time is implemented with an effective control algorithm for split-AC is discussed in [15]. The enactment of switched reluctance motor with CUK converter is observed for enhancing power quality requirements is discussed in [16].…”

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

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“…In literature [18][19][20][21][22][23][24], the control process is too complex, and the time of setting up the output voltage is too slow. Reference [25] uses analog circuit to realize soft start, and although the starting speed of output voltage is fast and the current inrush is small, it is not desirable for resonant converter with high power density.…”

Section: Introductionmentioning

confidence: 99%

The Phase Shifting Soft Startup of L-LLC Resonant Bidirectional DC-DC Converter Based on Current-Limiting Curve

Tong

Ming

et al. 2021

Mathematical Problems in Engineering

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The new L-LLC resonant bidirectional DC-DC converter (L-LLC-BDC) will produce a large resonance current and voltage inrush during the startup, posing a threat to the safe operation of the power device. Although a very high starting frequency can effectively suppress the inrush, it will also increase the output current demand of the driving ICs. This paper proposes a phase-shifting soft-start control strategy based on the current-limiting curve. Using operating mode analysis, the peak value of the resonant current is limited according to the output voltage and the phase shift angle of the switch, with the limit current curve at the startup stage drawn. By this current curve, a one-to-one correspondence between the output voltage and the phase shift angle of the switch is obtained. The phase-shifted soft-start control strategy can quickly establish the output voltage on the basis of a resonant frequency and can effectively suppress the resonance current inrush. An experimental prototype with a power of 6 kW and an input of 760 V and an output of 380 V is built. The experimental results prove the correctness and effectiveness of the soft start control strategy proposed in this paper.

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