Proposed Commutation Method for Performance Improvement of Brushless DC Motor

Chang-Sung Jin, Chang-Min Kim, In-Jin Kim and Iksang Jang
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Chang-Sung Jin: Department of Electrical Engineering, Wonkwang University, Iksan 54538, Korea
Chang-Min Kim: Department of Electrical Engineering, Wonkwang University, Iksan 54538, Korea
In-Jin Kim: Department of Electrical Engineering, Wonkwang University, Iksan 54538, Korea
Iksang Jang: Electric Powertrain Core Technology Team, Hyundai Mobis, Yongin 16891, Korea

Energies, 2021, vol. 14, issue 19, 1-16

Abstract: This study focused on the efficiency improvement and acoustic noise reduction of brushless DC (BLDC) motors by reducing current harmonics using a novel BLDC commutation method. To achieve these goals, we designed an improved 150° commutation method for a three-phase permanent magnet BLDC motor that can improve the current waveform. Although the 120° commutation method is generally employed for BLDC motors, an improved 150° commutation method is introduced to operate the BLDC with increased efficiency and acoustic noise similar to a brushless AC motor. This study investigated the attributes of various commutation methods, both theoretically and experimentally, to determine the optimal commutation method. The results of this study indicate that the improved 150° commutation method is optimal in terms of harmonic attributes and reduced torque ripple, allowing it to improve motor efficiency and reduce acoustic noise.

Keywords: BLDC; commutation method; efficiency improvement; current harmonics; reduction acoustic noise (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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