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Your search keyword '"Bang, Tae-Kyoung"' showing total 43 results
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43 results on '"Bang, Tae-Kyoung"'

39. Experimental and comparative study of mechanical and electromagnetic aspects of a high-speed permanent magnetic motor with two different magnetic materials.

Author

Woo, Jong-Hyeon, Bang, Tae-Kyoung, Kim, Chang-Woo, Yoon, Ick-Jae, and Choi, Jang-Young

Subjects
*MAGNETIC materials, *PERMANENT magnet motors, *RARE earth metals, *PERMANENT magnets, *COMPARATIVE studies, *FERRITES
Abstract

This paper compares permanent magnet synchronous motors with rare earth permanent magnets (PM) and those with ferrite PM, and it suggests that ferrite PM can replace rare earth PM. Therefore, the two models with the same output were compared and analyzed by comparing the mechanical and electromagnetic characteristics. Finally, the study is validated experimentally. [ABSTRACT FROM AUTHOR]

Published
2020
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42. Characteristic Analysis and Experimental Verification of Electromagnetic and Vibration/Noise Aspects of Fractional-Slot Concentrated Winding IPMSMs of e-Bike.

Author

Lee, Young-Geun, Bang, Tae-Kyoung, Lee, Jeong-In, Woo, Jong-Hyeon, Jo, Sung-Tae, and Choi, Jang-Young

Subjects
*ELECTROMAGNETIC noise, *PERMANENT magnets, *MAGNETIC torque, *PERMANENT magnet motors, *ELECTRIC bicycles, *MAGNETISM, *NOISE, *RELUCTANCE motors
Abstract

In this study, we performed the electromagnetic and mechanical characteristic analyses of an 8-pole 12-slot interior permanent magnet synchronous motor (IPMSM). Permanent magnet synchronous motors are classified into surface permanent magnet synchronous motor and interior permanent magnet synchronous motors according to the type of rotor. The IPM type is advantageous for high-speed operation because of the structure where the permanent magnet is embedded inside the rotor, and it has the advantage of having a high output density by generating not only the magnetic torque of the permanent magnet, but also the reluctance torque. However, such a motor has more vibration/noise sources than other types, owing to changes in reluctance. The sources of motor noise/vibration can be broadly classified into electromagnetic, mechanical, and aerodynamic sources. Electromagnetic noise sources are classified into electromagnetic excitation sources, torque pulsations, and unbalanced magnetic forces (UMFs). Vibration and noise cause machine malfunctions and affect the entire system. Therefore, it is important to analyze the electromagnetic vibration source. In this study, the electromagnetic characteristics of an IPMSM were analyzed through the finite element method to derive the UMF. Vibration and noise analyses were performed by electromagnetic–mechanical coupling analysis, and vibration and noise characteristics based on electromagnetic noise sources were analyzed. [ABSTRACT FROM AUTHOR]

Published
2022
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43. Core-Loss Analysis of Linear Magnetic Gears Using the Analytical Method.

Author

Lee, Jeong-In, Shin, Kyung-Hun, Bang, Tae-Kyoung, Kim, Kyong-Hwan, Hong, Key-Yong, Choi, Jang-Young, and Baker, Nick

Subjects
AIR gap flux, FINITE element method, MAGNETIC cores, BEHAVIORAL assessment, ELECTRIC machines, MAGNETIC flux density
Abstract

In this study, analysis of core-loss occurring in the magnetic flux modulation core of a linear magnetic gear and the core of each mover is presented, using an analytical method. Losses in electric machines were generally calculated and analyzed using the finite element method (FEM). However, in the case of core-loss, the exact loss value could not be calculated using FEM data. Therefore, we considered the harmonic component of the air-gap magnetic flux density waveform with the modified Steinmetz equation, and performed a more accurate core-loss analysis with magnetic behavior analysis. Thus, we performed a calculated core-loss characteristic comparison with the FEM and the modified Steinmetz equation. [ABSTRACT FROM AUTHOR]

Published
2021
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