Noise and vibration reduction of switched reluctance motor with novel simplified current waveform to reduce force sum variation

Kurihara, Noboru; Bayless, Jacob; Chibá, Akira

doi:10.1109/iemdc.2015.7409307

Cited by 19 publications

(10 citation statements)

References 19 publications

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“…The methods first represent the relationship between current harmonics and radial force harmonics and then analytically calculate the magnitude and phase angle of the harmonics based on some assumptions. However, in [17]- [18], the methods do not consider the magnetic saturation in SRMs, and the current profile determined by the analytical calculation is not optimal. In addition, none of the aforementioned techniques considered simultaneous minimization of the torque ripple and vibration of SRMs.…”

Section: Introductionmentioning

confidence: 96%

“…In [16], a force-sharing algorithm and a direct instantaneous force control method were proposed to achieve a constant sum of the radial forces. In [17]- [18], analytical current profiling methods were proposed to eliminate of the third harmonic in the sum of the radial forces. The methods first represent the relationship between current harmonics and radial force harmonics and then analytically calculate the magnitude and phase angle of the harmonics based on some assumptions.…”

Section: Introductionmentioning

confidence: 99%

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Vibration and torque ripple reduction of switched reluctance motors through current profile optimization

Mitra

et al. 2016

2016 IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper proposes a differential evolution (DE) optimization-based current profiling method for simultaneous reduction of the torque ripple and vibration of switched reluctance motors (SRMs). The mechanism of torque generation in SRMs produces radial forces in addition to the required tangential force. It has been shown that the radial forces acting on the stator are the main vibration source in SRMs and keeping the sum of the radial forces constant can reduce the magnitude of the significant harmonics of the sum of radial forces and further reduce vibration by avoiding the resonance caused by those harmonics. A simple method is proposed to model the torque and radial forces generated in the SRMs while considering the saturation effects. The resulting torque and radial force models are then used in the DE optimization process to generate the current profile of each phase in the form of Fourier series, where the Fourier coefficients of each phase current profile are determined to minimize the torque ripple and significant harmonics in the sum of the radial forces. The proposed method significantly reduces the computational cost of the finite element analysis (FEA)-based methods. The effectiveness of the proposed method is verified through both FEA simulation and experimental results.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Vibration and torque ripple reduction of switched reluctance motors through current profile optimization

Mitra

et al. 2016

2016 IEEE Applied Power Electronics Conference and Exposition (APEC)

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“…Recent publications [6][7][8][9] have shown that the vibration mode shape zero which is excited by a ripple on the overall radial force is likely to be the predominant noise source in automotive-sized machines. Therefore, direct instantaneous force control (DIFC) [10,11] has been proposed to keep the sum of all radial phase forces constant over time.…”

Section: Introductionmentioning

confidence: 99%

Direct instantaneous torque and force control: a control approach for switched reluctance machines

Klein-Heßling

Hofmann

Doncker

2017

IET Electric Power Applications

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Switched‐reluctance technology is appealing to the automotive industry due to its low cost. Conventional research focuses on the two main issues, namely torque ripple and acoustic noise. However, control schemes usually only address one of these two issues at a time. This study unifies the approaches of direct instantaneous torque control and direct instantaneous force control to simultaneously eliminate two central drawbacks of switched reluctance machines (SRMs). A search algorithm was used to predict appropriate reference values for each phase to keep torque and overall radial force smooth at any time. Simulation and measurement results confirmed that the control objectives were met so that torque ripple was reduced and the acoustic behaviour of the investigated automotive traction drive was simultaneously improved. A comparison with conventional control methods investigating vibrations and efficiency is provided. The proposed control approach thus provides future engineers with a powerful tool for adapting SRMs to the requirements of the automotive sector.

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“…In addition, several studies have been proposed to control the radial force directly. Moreover, researches in [16]- [18] point out that the variation of the radial force has a large impact on the vibration performance, which inspired the development of control methods aiming to obtain a smooth radial force. In [16], this objective is achieved by adopting the direct instantaneous force control (DIFC), along with a predictive controller used to compute the duty ratio of the PWM (Pulse-Width Modulation).…”

Section: Introductionmentioning

confidence: 99%

A new vibration reduction control strategy of switched reluctance machine

Zhang

Bahri

Mininger

et al. 2017

2017 IEEE International Electric Machines and Drives Conference (IEMDC)

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This paper proposes a control strategy capable of reducing the vibration while keeping a low torque ripple for a switched reluctance machine (SRM). The aim is to minimize the variation of the radial force and to optimize the torque control parameters. At first, the torque ripple reduction method is introduced, for which an off-line optimization of control parameters is adopted. Then, the vibration reduction is achieved by Direct Force Control (DFC), whose purpose is to reduce the variation of the sum of radial forces. However, in order to cope with the drawback of DFC that amplifies the torque ripple, a reference current adapter is proposed based on the limitation of torque and radial force variations. The reference current adapter produces an auto-tuning reference current that achieves a tradeoff between torque ripple and vibration. Finally, simulation results are presented to validate the effectiveness of the proposed control method under different operating points.

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Noise and vibration reduction of switched reluctance motor with novel simplified current waveform to reduce force sum variation

Cited by 19 publications

References 19 publications

Vibration and torque ripple reduction of switched reluctance motors through current profile optimization

Vibration and torque ripple reduction of switched reluctance motors through current profile optimization

Direct instantaneous torque and force control: a control approach for switched reluctance machines

A new vibration reduction control strategy of switched reluctance machine

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