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Fan system and stopping method for motor thereof

  • US 7,446,492 B2
  • Filed: 11/22/2006
  • Issued: 11/04/2008
  • Est. Priority Date: 12/02/2005
  • Status: Active Grant
First Claim
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1. A fan system, electrically connected to a power supply for receiving power therefrom, the fan system comprising:

  • an energy storage apparatus for receiving and storing power;

    a motor, electrically connected to the energy storage apparatus and receiving power;

    a driver, coupled between the energy storage apparatus and the motor to form a control path therewith and generating a driving signal to the motor according to received power; and

    a start-up device, coupled between the energy storage apparatus and the motor to form a power path therewith, wherein when no power is provided to the fan system, the energy storage apparatus releases stored power and the start-up device generates a start-up signal to the motor in accordance with the released power so as to form a short-circuit loop in the motor and stop an operation of the motor.

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