TY - GEN
T1 - Study on electromagnetic exciting force characteristics and electromagnetic noise of Permanent Magnet DC motor
AU - Liu, Manlan
AU - Yu, Tianda
AU - Cui, Shumei
AU - He, David
PY - 2012
Y1 - 2012
N2 - Electromagnetic exciting force is the key to generate electromagnetic noise. The characteristics of electromagnetic exciting force and the causing of electromagnetic noise were analyzed after the power was off for cooling fan Permanent Magnet DC (PMDC) motor. Time-stepping finite element method was selected to calculate its several parameters, such as air gap magnetic density harmonics generated by the stator and rotor, torque ripple and unbalanced magnetic pull at its different speed.Experiment on unloading vibration noise was carried out to confirm the validity of electromagnetic exciting force analysis. The results show: electromagnetic force amplitude keeps constant while the motor speed changing. Torque ripple decreases while the motor speed down. A kind of electromagnetic noise called howling noise produced by PMDC motor used in car cooling fan is mainly due to resonance. So the best way to eliminate this motor's noise is to improve the order of electromagnetic waves and avoid the electromagnetic resonance.
AB - Electromagnetic exciting force is the key to generate electromagnetic noise. The characteristics of electromagnetic exciting force and the causing of electromagnetic noise were analyzed after the power was off for cooling fan Permanent Magnet DC (PMDC) motor. Time-stepping finite element method was selected to calculate its several parameters, such as air gap magnetic density harmonics generated by the stator and rotor, torque ripple and unbalanced magnetic pull at its different speed.Experiment on unloading vibration noise was carried out to confirm the validity of electromagnetic exciting force analysis. The results show: electromagnetic force amplitude keeps constant while the motor speed changing. Torque ripple decreases while the motor speed down. A kind of electromagnetic noise called howling noise produced by PMDC motor used in car cooling fan is mainly due to resonance. So the best way to eliminate this motor's noise is to improve the order of electromagnetic waves and avoid the electromagnetic resonance.
KW - Air gap magnetic flux density harmonic
KW - Electromagnetic exciting force
KW - Electromagnetic noise
KW - Permanent magnet DC motor
KW - Torque ripple
KW - Unbalanced magnetic pull
UR - https://www.scopus.com/pages/publications/81055147404
U2 - 10.4028/www.scientific.net/AMM.128-129.323
DO - 10.4028/www.scientific.net/AMM.128-129.323
M3 - 会议稿件
AN - SCOPUS:81055147404
SN - 9783037852842
T3 - Applied Mechanics and Materials
SP - 323
EP - 328
BT - Measuring Technology and Mechatronics Automation IV
T2 - 4th International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2012
Y2 - 6 January 2012 through 7 January 2012
ER -