• Journal of the Korean Society for Precision Engineering
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• v.17 no.1
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• pp.101-109
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• 2000

Mutual torque ripple in a brushless DC motor is the main source of acoustic noise, especially fur motor operation with high speed and torque. This paper presents a method to obtain mutual torque ripple to identify acoustic noise source. Mutual torque ripple can be determined by analyzing phase current shape and magnetic circuit with different lead angles. Current shape is determined by state space model of voltage equation with the use of inductance calculated by FEM, and confirmed by experimental results. Mutual torque ripple is also determined by FEM analysis for the calculated current shape. Acoustic noise experiment reveals that mutual torque ripple with different lead angle is one of the main sources for noise generation in a brushless DC motor.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.774-775
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• 2008

본 논문에서는 전동차용 전기식 플러그인 도어를 구동하기 위해 영구자석형 무정류자 직류전동기(Brushless DC Motor)를 적용하였다. BLDC 전동기의 속도제어를 위해 사용되어지는 홀센서 신호를 속도제어로만 사용하는 것이 아니라 이러한 홀센서 파형을 검출, 위치제어를 위한 신호로 활용하였으며 실제로 도어시스템에 적용, 실험하여 그 가능성을 확인하였다.