Method to measure the angular speed of an induction motor

Details Method to measure the angular speed of an induction motor Method to measure the angular speed of an induction motor

2006-01-20

2009-08-25

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S779000

Reexamination Certificate

active

07579804

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.

REFERENCES:
patent: 6894454 (2005-05-01), Patel et al.
patent: 7262569 (2007-08-01), Douglas

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