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METHOD OF CONSTANT RPM CONTROL FOR A VENTILATION SYSTEM

  • US 20090137199A1
  • Filed: 01/18/2008
  • Published: 05/28/2009
  • Est. Priority Date: 11/28/2007
  • Status: Active Grant
First Claim
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1. A method of operating an electric motor in a ventilation system, the method comprising:

  • providing a blower comprising a motor and a fan coupled to the motor, the blower being configured to generate an airflow in a ventilation duct;

    monitoring a rotational speed of the motor;

    monitoring an electric current applied to a motor; and

    controlling the motor'"'"'s operation so as to maintain the rotational speed within proximity of a target rotational speed while the electric current is smaller than a reference value.

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