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Study on Process Derivation and Characteristic Analysis for BLDC Motor Design Using Dual Rotor Structure with High Torque Density

Department of Electrical Engineering, Hanbat National University, Daejeon 34158, Korea
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Energies 2020, 13(24), 6745; https://doi.org/10.3390/en13246745
Received: 11 November 2020 / Revised: 13 December 2020 / Accepted: 17 December 2020 / Published: 21 December 2020
In this paper, the design process of brushless DC (BLDC) motor adopting the dual rotor structure that can reduce the overall size of the motor while generating the same torque as the conventional permanent magnet BLDC motor is analyzed. A simple size is selected by obtaining the torque per rotor volume (TRV), and a method of matching the counter electromotive force by selecting the pole-arc of the magnet through a magnetic equivalent circuit is analyzed. Since the efficiency is low because the 120-degree commutation method is selected, the middle stator is optimized through detailed design through the experimental design method. Afterwards, it has the advantage of being able to shift without stopping due to the characteristic of a dual rotor. For this, an analysis of the driving characteristics for each mode is performed. View Full-Text
Keywords: BLDC; dual rotor; magnetic equivalent circuit; operation mode BLDC; dual rotor; magnetic equivalent circuit; operation mode
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MDPI and ACS Style

Lee, B.-C.; Song, C.-H.; Kim, D.-H.; Kim, K.-C. Study on Process Derivation and Characteristic Analysis for BLDC Motor Design Using Dual Rotor Structure with High Torque Density. Energies 2020, 13, 6745. https://doi.org/10.3390/en13246745

AMA Style

Lee B-C, Song C-H, Kim D-H, Kim K-C. Study on Process Derivation and Characteristic Analysis for BLDC Motor Design Using Dual Rotor Structure with High Torque Density. Energies. 2020; 13(24):6745. https://doi.org/10.3390/en13246745

Chicago/Turabian Style

Lee, Byeong-Chul; Song, Cheon-Ho; Kim, Do-Hyun; Kim, Ki-Chan. 2020. "Study on Process Derivation and Characteristic Analysis for BLDC Motor Design Using Dual Rotor Structure with High Torque Density" Energies 13, no. 24: 6745. https://doi.org/10.3390/en13246745

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