Effect of Pole and Slot Combination on Noise and Vibration in Permanent Magnet Synchronous Motor

Sun, Tao; Kim, Jimin; Lee, Geun-Ho; Hong, Jung-Pyo; Choi, Myung-Ryul

doi:10.1109/tmag.2010.2093872

Cited by 189 publications

(76 citation statements)

References 7 publications

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“…The rotor core of the IPMSM is shown in Fig. 3c [6,7]. The six poles, 48 V BEMF effective value at 1000 rpm, and 9000 rpm maximum speed motor were designed for high-speed operation based on a maximum available voltage of 115 V from the battery.…”

Section: Design Of Wound Rotor Synchronous Motormentioning

confidence: 99%

Development of Wound Rotor Synchronous Motor for Belt-Driven e-Assist System

Lee¹,

Lee²,

Wang³

2013

Journal of Magnetics

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The automotive industry is showing widespread interest in belt-driven electric motor-assisted (e-Assist) systems. A belt-driven assist system (BAS) starts and assists the combustion engine in place of the conventional generator. In this study, a water-cooled wound rotor synchronous motor (WRSM) for the e-Assist system was designed and analyzed. The performance of the WRSM was compared with that of an interior permanent magnet synchronous motor (IPMSM). The WRSM efficiency can be improved for the BAS by adjusting the field flux at high speeds. The field current map to obtain the maximum efficiency based on the speed and torque was developed. To control the field flux via field current control in the WRSM, a general H-bridge circuit was added to the WRSM inverter to get the rapid current response in the high-speed region; the characteristics were compared with the chopper circuit. A WRSM developed for the belt-driven e-Assist system and a prototype 115 V power electronic converter to drive the WRSM were tested with a 900 cc combustion engine. The test results showed that the WRSM-type e-Assist system had good characteristics and could successfully start and assist the 900 cc combustion engine.

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Section: Design Of Wound Rotor Synchronous Motormentioning

confidence: 99%

Development of Wound Rotor Synchronous Motor for Belt-Driven e-Assist System

Lee¹,

Lee²,

Wang³

2013

Journal of Magnetics

Self Cite

View full text Add to dashboard Cite

show abstract

“…The studies of electromagnetic simulation analysis of rotor eccentricity in electric machinery have been developed for several decades. However, most researchers focus on motors [1][2][3][4]. Many studies are concerned with the effect of rotor eccentricity on the orbit of the shaft centerline [5,6].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Vibration Simulation of a 250-MW Large Hydropower Generator with Rotor Eccentricity and Rotor Deformation

Peng

et al. 2017

Energies

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Abstract:The electromagnetic vibration caused by electromagnetic force on the stator has threatened large hydro generators operating safely and stably. At the Zhexi hydropower station, the hydro generator was beset by electromagnetic vibration for a long time. Therefore, the paper provided a new method to help to find the vibration source and detect the hydro generator fault, through the combination of simulation and experiments. In this paper, the 3D stator pack structure model and the 2D hydro generator electromagnetic models under rotor eccentricity and rotor ellipse deformation conditions were built. Then, electromagnetism simulations were conducted to study the characteristics of the electromagnetic flux and electromagnetic force under different conditions by using the finite element method (FEM). Lastly, the vibration testing experiments and harmonic response simulations of stator frame were performed to present the characteristics of vibration distribution in frequency conditions. The simulation results were compared with the generator measured data to try to find out the main vibration source and guide the overhaul.

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“…The distribution characteristics of radial electromagnetic force were theoretically analyzed by FEM method [34]. The results in [36][37][38] show that the lowest mode number of radial force harmonics is the greatest common divisor of pole and slot combination. The effect of rotor step skewed on noise and vibration of the IPMSM were introduced in [39].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Electromagnetic, Thermal and Mechanical Characteristics of a Five-Phase Dual-Rotor Permanent-Magnet Synchronous Motor

Zhao

Liu

et al. 2015

Energies

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This paper investigates of a kind of five-phase dual-rotor permanent-magnet synchronous motor (DRPMSM), which contains dual rotors and a single stator. This kind of motor has the potential advantages of high power density, high reliability and high efficiency, which make it more appropriate for using in electric vehicles (EVs). In order to evaluate the most suitable power level for this kind of structure, the electromagnetic, the thermal and the mechanical characteristics are investigated in this paper. The length to diameter ratio of motors is researched to obtain the highest power density and then the optimum ratio is obtained. Based on the optimum ratio, the thermal characteristics are researched under natural condition and forced-air cooling condition with different wind speeds. In addition, the mechanical characteristics are analyzed under no-load and different loads conditions, respectively. All of the results are analyzed by two-dimension (2-D) and three-dimension (3-D) finite element method (FEM) simulation, which provide a good reference to select suitable power level for this kind of motor structure. Finally, a DRPMSM prototype is manufactured and tested. The experimental results effectively verify the FEM results.

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Effect of Pole and Slot Combination on Noise and Vibration in Permanent Magnet Synchronous Motor

Cited by 189 publications

References 7 publications

Development of Wound Rotor Synchronous Motor for Belt-Driven e-Assist System

Development of Wound Rotor Synchronous Motor for Belt-Driven e-Assist System

Electromagnetic Vibration Simulation of a 250-MW Large Hydropower Generator with Rotor Eccentricity and Rotor Deformation

Investigation of Electromagnetic, Thermal and Mechanical Characteristics of a Five-Phase Dual-Rotor Permanent-Magnet Synchronous Motor

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