Characterization of Noise and Vibration Sources in Interior Permanent-Magnet Brushless DC Motors

Ko, Hong-Seok; Kim, Kwang‐Joon

doi:10.1109/tmag.2004.832991

Cited by 124 publications

(52 citation statements)

References 6 publications

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“…That is, BLDC motor design must necessarily take BEMF of each phase into account in order that it manifests a trapezoidal waveform with 120° flat-top corresponding to that of input current, since torque of each phase is product of input current and BEMF. Then, torque of each phase can be obtained from flat-top of current and BEMF, and synthesized torque of 3-phase torque, which are shifted 120° each other, remains consistent by compensation, totally [6,8,9]. Analogous to Y-connection, the ideal basic 6-step control for "Δ-connection, 3-phase excitation system" is presented in Fig.…”

Section: Characteristics Of Bldc Motor According To Winding Connectionmentioning

confidence: 99%

Phase Advance Control to Reduce Torque Ripple of Brush-less DC Motor According to Winding Connection, Wye and Delta

Lee¹,

Song²,

Kim³

et al. 2014

Journal of Electrical Engineering and Technology

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-In this research, the characteristics of Brush-less DC (BLDC) motor in accordance with winding connection method, both Y-connection and D -connection, has been identified with design methodology simply. BLDC motor has been designed for both winding connections, and their torque analysis has been performed considering ideal current source analysis and voltage source analysis with 6-step control. In addition, to reduce torque ripple of BLDC motor, caused by coil inductance, on voltage source analysis with 6-step control, we have proposed suitable control method which is Phase Advance Control. It is verified that the torque ripple has been decreased by virtue of phase advance control, advancing and widening conduction angle of switching, via performance analysis by Finite Element Analysis.

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Section: Characteristics Of Bldc Motor According To Winding Connectionmentioning

confidence: 99%

Phase Advance Control to Reduce Torque Ripple of Brush-less DC Motor According to Winding Connection, Wye and Delta

Lee¹,

Song²,

Kim³

et al. 2014

Journal of Electrical Engineering and Technology

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“…The main origin of torque ripple is unbalanced radial force and cogging toque, which are generated by the interaction among magnetized PM's, air-gap permeance and slot harmonics [3]. In order to balance the distribution of radial force and reduce the cogging torque, the rotor shape is applied to notches.…”

Section: Rotor Design For Cogging Torque Reductionmentioning

confidence: 99%

“…Also, these large vibrations become not only the main cause of faults in the driving motor, but also cause distortion of the controlled excitation current, and consequently affects the EMI characteristics of the total system [3].…”

Section: Introductionmentioning

confidence: 99%

Rotor Shape Design of an Interior PM Type BLDC Motor for Improving Mechanical Vibration and EMI Characteristics

Hur¹,

Kim²

2010

Journal of Electrical Engineering and Technology

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-This paper presents the rotor shape optimization of an interior type permanent magnet (IPM) motor for a reduction of vibration and Electromagnetic Interference (EMI). The vibration and EMI in permanent magnet motors is generated by cogging torque ripple, radial force and commutation torque ripple. Consequently, in order to improve vibration and EMI, the optimal notches are put on the rotor pole with an arc shape proposed. The variation of vibration frequency due to the cogging torque and radial force of each model is computed by the finite element method (FEM). From the analysis result and experiment, we confirmed the proposed model has remarkably improved the vibration and EMI.

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“…Many studies have noted that the main sources of motor vibration are fluctuation of the magnetic force and mechanical deformation of the motor structure [4]- [5]. Hence, several design techniques such as modification of the motor shape [6]- [7] and pole-slot combination [8] have been proposed to minimize them.…”

Section: Introductionmentioning

confidence: 99%

Vibration reduction Design of Permanent Magnet Motor Using Level Set Based Shape Optimization Method

Lim

Min

Hong

2015

WEVJ

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This paper presents a new optimization method to design a rotor structure for a permanent magnet motor that can reduce vibration. The optimization problem is formulated with a multi-objective function to minimize the fluctuation of the radial magnetic force and the torque ripple. To obtain the optimal rotor shape consisting of a permanent magnet and ferromagnetic material, a multiple level set model is employed to express the structural boundaries and magnetic properties of each material. The updating process of the level set function based on the adjoint sensitivity and the time evolutional equation makes it possible to obtain a novel rotor configuration of the motor. To verify the usefulness of the proposed method, a rotor design example of the surface-mounted permanent magnet motor for electric power steering system is performed.

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Characterization of Noise and Vibration Sources in Interior Permanent-Magnet Brushless DC Motors

Cited by 124 publications

References 6 publications

Phase Advance Control to Reduce Torque Ripple of Brush-less DC Motor According to Winding Connection, Wye and Delta

Phase Advance Control to Reduce Torque Ripple of Brush-less DC Motor According to Winding Connection, Wye and Delta

Rotor Shape Design of an Interior PM Type BLDC Motor for Improving Mechanical Vibration and EMI Characteristics

Vibration reduction Design of Permanent Magnet Motor Using Level Set Based Shape Optimization Method

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