Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2006.07b
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- Pages.857-860
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- 2006
Study on the Noise Reduction of BLDC Fan Motor by the Diminution of the Electro-Magnetic Exciting Source
전자기 가진 원 저감에 의한 BLDC Fan Motor의 공진 소음 저감에 관한 연구
- Shin, Hyun-Jung (DA Research Lab. LG Electronics.) ;
- Lee, Dong-Il (DA Research Lab. LG Electronics.)
- Published : 2006.07.12
Abstract
It is important to diminish noise source of an electric motor used in appliances. We studied on the noise reduction of BLDC motor to drive a fan. Especially, this study was focused on detent torque caused by interaction between a permanent magnet of rotor and groove in stator. This source and rotating system brought about a resonance. This paper showed that the higher harmonic component of this torque had a main factor to lessen noise. So, we had designed new magnets with shape like a peanut and pseudo-sinusoidal flux density for low-noise BLDC motor in refrigerator.
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