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:
Jan. 06, 2026
Filed:
Jun. 06, 2023
Applicant:
Kinetic Technologies International Holdings Lp, Toronto, CA;
Inventors:
Kwei Chung Li, Kowloon, HK;
Feng Zhu, Wanchai, HK;
Assignee:
Kinetic Technologies International Holdings LP, Toronto, CA;
Primary Examiner:
Int. Cl.
CPC ...
H02P 21/09 (2016.01); H02P 6/34 (2016.01); H02P 27/08 (2006.01); H02P 103/20 (2016.01);
U.S. Cl.
CPC ...
H02P 21/09 (2016.02); H02P 6/34 (2016.02); H02P 27/085 (2013.01); H02P 2103/20 (2015.01);
Abstract
A method of rotor angle estimation for a multi-phase permanent magnet rotor motor having a plurality of phase coils. The method comprises applying a voltage to one or more of the phase coils and measuring respective phase coil currents. The method includes obtaining measured or estimated values of resistance and inductance for each phase coil from the measured phase coil currents and estimating rotor angle θ based on the measured or estimated values of resistance and inductance for each phase coil.