Method for controlling a permanent magnet synchronous electric motor at steady-state, electronic device for implementing said method and motor assembly comprising said electronic device
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United States of America Patent
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Jul 21, 2015
Grant Date -
Jan 26, 2012
app pub date -
Jul 22, 2011
filing date -
Jul 23, 2010
priority date (Note) -
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Abstract
A method, which is efficient and cost-effective to implement, for controlling, at steady-state, a synchronous electric motor comprising a permanent magnet rotor and a stator provided with windings connected to an electrical grid by means of a switch controlled by a processing unit, said method comprising the following steps: periodically switching on said switch by means of a PWM output of said processing unit; continuously verifying the shift with respect to an ideal operating condition of the motor; and modifying the switched on period of the switch in feedback to approach said ideal operating condition of the motor.
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