Title: Method to measure the angular speed of an induction motor
Application Number: 200610138151 Application Date: 2006.11.14
Publication Number: 1968005 Publication Date: 2007.05.23
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02P23/14;H02P27/04;G01P3/44;G01P3/46
Applicant(s) Name: Zapi S. P. A. Address:
Inventor(s) Name: Iotti Maurizio Dr.
Attorney & Agent: sunzheng
Abstract:
    The invention relates to a method for determining the electric angular speed of a rotor of an induction motor, wherein electric power supplied to phases of a stator of the induction motor affects the rotor, comprising the steps of: switching off the electric power supply to the phases of the stator during a particular period of time, picking-up signals corresponding to voltages at the stator phases within the particular period of time, and determining the electric angular speed of the rotor based on the picked-up signals.
Time: 6
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