Proposed Commutation Method for Performance Improvement of Brushless DC Motor

Energies

In-Jin Kim¹  Chang-Sung Jin¹  Chang-Min Kim¹  Iksang Jang² 

[1]Department of Electrical Engineering, Wonkwang University, Iksan 54538, Korea

[2]Electric Powertrain Core Technology Team, Hyundai Mobis, Yongin 16891, Korea

关键词: BLDC;    commutation method;    efficiency improvement;    current harmonics;    reduction acoustic noise;   

DOI  :  10.3390/en14196023

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown