Acoustic Noise Reduction of Switched Reluctance Motor With Reduced RMS Current and Enhanced Efficiency

Bayless, Jacob; Kurihara, Noboru; Sugimoto, Hiroya; Chibá, Akira

doi:10.1109/tec.2015.2496968

Cited by 67 publications

(47 citation statements)

References 22 publications

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“…However, all these control solutions in [13,14] require additional components-PZTs. Since the main source of the vibration is the variation of the radial force, it inspires the propositions of control strategies aiming to reduce the vibration by controlling the radial force directly [15][16][17][18][19]. In [15], the authors propose a PWM-based predictive control method, in which the direct instantaneous force control (DIFC) is adopted trying to obtain a smooth total radial force.…”

Section: Introductionmentioning

confidence: 99%

“…However, this method has the disadvantage of increasing total losses, which can be up to 48% compared to the traditional method. In [17][18][19], the authors propose a new current profile to minimize the variation of the total radial force under unsaturated and saturated conditions. Besides, authors investigate the effect of control parameters on torque ripple, efficiency and vibration reduction.…”

Section: Introductionmentioning

confidence: 99%

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A New Control Method for Vibration and Noise Suppression in Switched Reluctance Machines

et al. 2019

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Due to their inherent advantages such as low cost, robustness and wide speed range, switched reluctance machines (SRMs) have attracted great attention in electrical vehicles. However, the vibration and noise problems of SRMs limit their application in the automotive industry because of the negative impact on driver and passengers’ comfort. In this paper, a new control method is proposed to improve the vibratory and acoustic behavior of SRMs. Two additional control blocks —direct force control (DFC) and reference current adapter (RCA)—are introduced to the conventional control method (average torque control (ATC)) of SRM. DFC is adopted to control the radial force in the teeth of the stator, since the dynamic of the radial force has a large impact on the vibratory performance. RCA is proposed to handle the trade-off between the DFC and ATC. It produces an auto-tuning current reference to update the reference current automatically depending on the control requirement. The effectiveness of the proposed control strategy is verified by experimental results under both steady and transient condition. The results show that the proposed method improves the acoustic performance of the SRM and maintains the dynamic response of it, which proves the potential of the proposed control strategy.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A New Control Method for Vibration and Noise Suppression in Switched Reluctance Machines

et al. 2019

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“…Due to the scarcity of rare earth permanent magnets, permanent magnet synchronous motors (PMSMs), in which permanent magnets are widely used, are becoming increasingly more expensive. Switched reluctance motors (SRMs) are receiving attention in various applications, such as electric vehicles [1][2][3], due to their simple structure and robustness, which makes them suitable in poor conditions and even in fault-tolerant operations [4].…”

Section: Introductionmentioning

confidence: 99%

Torque Ripple Reduction for Switched Reluctance Motor with Optimized PWM Control Strategy

Cai

Wang

et al. 2018

Energies

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The high current ripple and torque ripple are the main drawbacks of the switched reluctance motor (SRM) since the nonlinearity and double saliency, which limits its applications. In order to eliminate the current variation and torque ripple, an optimized pulse width modulation (PWM) control is presented in this paper. The voltage ratio duty is able to be predicted precisely according to the information of the motor running parameter. Based on torque sharing functions (TSFs), the current profile is pre-computed and four regions are defined according to the reference current profiles. The three modes, excitation, demagnetization and freewheeling, are flexibly chosen according to the characteristic of the current profile. It is indicated that it is better than that of conventional PWM modulation in terms of current ripple and the current tracing performance is improved without increasing the switching frequency or changing the hysteresis band. The current ripple is defined as the peak-to-peak value dividing the average value and it is reduced by 40%. A comparison in terms of the torque ripple and copper loss is also carried out: the torque ripple is significantly reduced via the proposed scheme under both magnetic linear and saturation conditions. The torque ripple and copper loss are reduced by about 70% and 12%, respectively. The validity and effectiveness of the proposed control strategy is verified by simulation and experimental results.

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“…A switched reluctance motor (SRM) has some advantages, such as a simple structure, rotor robustness, the potential to operate at high temperature and torque-speed range, which can be competitive to PMSMs employed in EVs and HEVs [6][7][8][9][10]. Nevertheless, SRM has the problem with a high level of vibration and acoustic noise in general [11][12][13]. A synchronous reluctance machine (SynRM) is also a candidate for a rare-earth-free machine, but its torque density, power density, power factor and efficiency are inferior compared to PMSMs [14][15].…”

Section: Introductionmentioning

confidence: 99%

Optimized design of a high-power-density PM-assisted synchronous reluctance machine with ferrite magnets for electric vehicles

Liu

et al. 2017

Archives of Electrical Engineering

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This paper proposes a permanent magnet (PM)-assisted synchronous reluctance machine (PMASynRM) using ferrite magnets with the same power density as rareearth PM synchronous motors employed in Toyota Prius 2010. A suitable rotor structure for high torque density and high power density is discussed with respect to the demagnetization of ferrite magnets, mechanical strength and torque ripple. Some electromagnetic characteristics including torque, output power, loss and efficiency are calculated by 2-D finite element analysis (FEA). The analysis results show that a high power density and high efficiency of PMASynRM are obtained by using ferrite magnets.

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Acoustic Noise Reduction of Switched Reluctance Motor With Reduced RMS Current and Enhanced Efficiency

Cited by 67 publications

References 22 publications

A New Control Method for Vibration and Noise Suppression in Switched Reluctance Machines

A New Control Method for Vibration and Noise Suppression in Switched Reluctance Machines

Torque Ripple Reduction for Switched Reluctance Motor with Optimized PWM Control Strategy

Optimized design of a high-power-density PM-assisted synchronous reluctance machine with ferrite magnets for electric vehicles

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