OS1108 インバータ運転時におけるファンモータの騒音と振動の低減

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タイトル別名
  • OS1108 Noise and Vibration Reduction of Inverter driven Fan Motor

抄録

Recently, cooling fans have been commonly used with inverter to optimize operating point of air volume for energy savings. But it increases abrasive vibration radiated noise caused by exciting force of PWM control, and that fundamental frequency is the same as career frequency of inverter. The purpose of this study is to reduce vibration radiated noise of impeller by using vibration mode shape that has low acoustic emission.

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