Method for restarting induction machine
AssigneesLsis Co., Ltd., Research Cooperation Foundation of Yeungnam University
InventorsHak-Jun Lee, Anno Yoo, Se-Hwan Kim, Jul-Ki Seok
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Abstract
Disclosed embodiments relate to apparatuses, methods, and systems for restarting an induction machine. In some embodiments, a method includes estimating a position of a rotor and a speed thereof in a position and speed estimation Operation, resetting a speed reference to correspond to the speed of the rotor in a speed reference resetting Operation, generating a control voltage corresponding to the speed reference to regulate a voltage magnitude using the control voltage in a voltage magnitude regulation Operation, and re-accelerating the induction machine up to a target speed after the regulation of the voltage magnitude in a re-acceleration Operation.
Claims7
A method for restarting an induction machine to restore power, comprising:
- estimating a rotor counter electromotive force and estimating a position and a speed of a rotor based on the rotor counter electromotive force when a driving signal is supplied to an induction machine;
- resetting a speed reference to correspond to the estimated speed of the rotor;
- generating a control voltage corresponding to the reset speed reference;
- regulating a voltage magnitude using the control voltage and the rotor counter electromotive force;
- and
- re-accelerating the induction machine up to a target speed after the voltage magnitude has been regulated,
- wherein the rotor counter electromotive force is used as a voltage reference while performing the estimation of the position and the speed of the rotor.
Dependencies are inferred from the claim text.