Acoustic Noise Mitigation of Switched Reluctance Machines with Windows on Stator and Rotor Poles

Gundogmus, Omer; Elamin, Mohammed; Yaşa, Yusuf; Husain, Tausif; Sözer, Yilmaz; Kutz, John; Tylenda, Joshua; Wright, Ronnie L.

doi:10.1109/tia.2020.2992664

Cited by 31 publications

(11 citation statements)

References 23 publications

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“…The electromagnetic torque of the SRM is closely related to the phase reluctance and current, while phase reluctance is related to the air gap and rotor. thus the torque ripple can be effectively reduced by optimizing the rotor geometry [59][60][61]. In the process of machine optimization, multi-level optimization is involved.…”

Section: Finite Element Analysis and Designmentioning

confidence: 99%

Overview of the Optimal Design of the Electrically Excited Doubly Salient Variable Reluctance Machine

Zhao

et al. 2021

Energies

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The Electrically Excited Doubly Salient Variable Reluctance Machine (EEDSVRM) is a new type of brushless machine designed according to the principle of air gap reluctance change. There is neither permanent magnet steel nor excitation winding on the rotor. The rotor is made of silicon steel sheets, thus the structure of the variable reluctance machine is very simple. There are many optimization methods for this type of machine optimal design, such as novel machine topology optimization, finite element simulation-based optimization, mathematical analysis-based optimization, intelligent algorithm-based optimization, and multiple fusion-based optimization. Firstly, this article introduces the basic structure and working principle of the EEDSVRM and analyzes both its common regularity and individual difference. Then, the different optimization design methods of EEDSVRM are reviewed, the advantages and disadvantages of the different optimization methods are summarized, and the research interests of the optimization design of variable reluctance machines in the future are prospected.

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Section: Finite Element Analysis and Designmentioning

confidence: 99%

Overview of the Optimal Design of the Electrically Excited Doubly Salient Variable Reluctance Machine

Zhao

et al. 2021

Energies

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“…The spacer increased the stiffness of the stator structure; thus, the vibration was suppressed. Another improvement was the introduction of windowed rotor and stator structures [8]. The radial force amplitude was reduced by adding windows to the rotor and stator.…”

Section: Introductionmentioning

confidence: 99%

Vibration and Acoustic Noise Reduction in Switched Reluctance Motor by Selective Radial Force Harmonics Reduction

Wiguna

Cai

Lilian

et al. 2023

IEEE Open J. Ind. Applicat.

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This paper presents a novel method for vibration and acoustic noise reduction in a three-phase 6/10 switched reluctance motor. The test machine has major vibration and acoustic noise at the 2 nd , 4 th , 5 th , 7 th , and 8 th harmonics. Accordingly, a novel method called "selective radial force harmonic reduction" is proposed. The proposed method selectively reduces the specific radial force harmonics at the stator teeth. By reducing the specific radial force harmonics such as 2 nd , 4 th , 5 th , 7 th , and 8 th , the corresponding vibration and acoustic noise can be reduced significantly in the test machine. In this study, a current calculation for the proposed method is introduced. In addition, finite element analysis and experiments are conducted to verify the effectiveness of the proposed method. Compared with a conventional square current, the experimental results show that the overall sound pressure level is reduced by 7.1 dBA using the proposed method at the rated speed and torque. The dynamic conditions of the test machine using the proposed method are also presented. As a result, the proposed method is effective in reducing vibration and acoustic noise in the three-phase 6/10 switched reluctance motor.

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“…Various techniques have been proposed to reduce the acoustic noise of SRMs. The acoustic noise can be reduced by changing the shape of the stator back-iron [6], introducing windows in the stator and rotor poles [7], [8], using distributed airgap [9], and by applying radial force shaping [10].…”

Section: Introductionmentioning

confidence: 99%

Radial Force Density Calculation of Switched Reluctance Machines Using Reluctance Mesh-Based Magnetic Equivalent Circuit

Watthewaduge

Bilgin

2022

IEEE Open J. Ind. Electron. Soc.

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Acoustic noise and vibration is one of the shortcomings of a switched reluctance machine (SRM). Harmonics of the radial force waveform in the airgap excite the stator structure at different vibration modes with specific frequencies. The radial force density in the airgap should be calculated before analyzing and mitigating acoustic noise and vibration. This paper proposes a reluctance mesh-based magnetic equivalent circuit (MEC) model to calculate the airgap radial force density. Reluctance mesh-based MEC models are developed for 3phase 6/4, 6/16, 12/8 and 4-phase 8/6, 8/10, and 16/12 SRMs. A technique for the dynamic modeling of SRMs is proposed using the reluctance mesh-based MEC method. Dynamic currents are calculated using the proposed technique and, then, the radial and tangential flux density in the airgap are calculated. The radial force density in the airgap is calculated by applying the Maxwell Stress Tensor method. Fourier series is used to calculate the harmonics of the radial force density. The results obtained from the MEC model are verified using finite element method (FEM) models. The implemented MEC-based dynamic modeling method is validated using experimental results.

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Acoustic Noise Mitigation of Switched Reluctance Machines with Windows on Stator and Rotor Poles

Cited by 31 publications

References 23 publications

Overview of the Optimal Design of the Electrically Excited Doubly Salient Variable Reluctance Machine

Overview of the Optimal Design of the Electrically Excited Doubly Salient Variable Reluctance Machine

Vibration and Acoustic Noise Reduction in Switched Reluctance Motor by Selective Radial Force Harmonics Reduction

Radial Force Density Calculation of Switched Reluctance Machines Using Reluctance Mesh-Based Magnetic Equivalent Circuit

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