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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.:

US 10008967 B1

PDFFull Text
Date of Patent:
Jun. 26, 2018

Filed:

Oct. 25, 2016

Closed loop flux weakening for permanent magnet synchronous motors

Applicant:

Microchip Technology Incorporated, Chandler, AZ (US);

Inventors:

Prasad Kulkarni, Bengaluru, IN;

Ramesh Kankanala, Bengaluru, IN;

Debraj Deb, Bengaluru, IN;

Assignee:

Microchip Technology Inc., Chandler, AZ (US);

Attorneys:

Burr & Forman LLP

Ryan M. Corbett

Primary Examiner:

Eduardo Colon Santana

Assistant Examiner:

Gabriel Agared

Int. Cl.
CPC ...
H02P 21/00 (2016.01); H02P 21/14 (2016.01);
U.S. Cl.
CPC ...
H02P 21/141 (2013.01); H02P 21/0089 (2013.01);
Abstract

A closed loop flux weakening method and apparatus are provided. The closed loop flux weakening apparatus may include a difference circuit that obtains a difference between a q-axis reference voltage and a q-axis voltage, a controller that converts the difference between the q-axis reference voltage and the q-axis voltage into a d-axis current of a stator of the motor, and a summation circuit that obtains a d-axis reference current by adding the d-axis current of the stator of the motor and a feed forward d-axis current of the stator of the motor.

Find Patent Forward Citations

Kulkarni, Prasad. (2018). Closed loop flux weakening for permanent magnet synchronous motors (U.S. Patent No. 10008967). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10008967

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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