The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 29, 2018
Filed:
Jan. 11, 2016
Applicant:
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Inventors:
Yebin Wang, Acton, MA (US);
Scott A Bortoff, Brookline, MA (US);
Assignee:
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
H02P 21/14 (2016.01); H02P 21/00 (2016.01);
U.S. Cl.
CPC ...
H02P 21/14 (2013.01); H02P 21/0039 (2013.01);
Abstract
Angular speed of a rotor of an induction motor without an encoder for rotor position and speed sensing is controlled by first sensing stator currents and voltages of the induction motor. A dynamic gain estimator is designed by applying a state transformation to a model of the induction motor. A states of the induction motor is estimated by applying the dynamic gain estimator to the currents and the voltages, and then the state is used to control the angular speed of the rotor of the induction motor.