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:
Apr. 20, 2021
Filed:
Jul. 31, 2017
Applicant:
Protean Electric Limited, Surrey, GB;
Inventor:
Timothy John Martin, Berkshire, GB;
Assignee:
PROTEAN ELECTRIC LIMITED, Surrey, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/18 (2016.01); H02P 6/182 (2016.01); H02P 3/22 (2006.01); B60L 3/00 (2019.01); H02P 3/18 (2006.01);
U.S. Cl.
CPC ...
H02P 6/182 (2013.01); B60L 3/0023 (2013.01); H02P 3/18 (2013.01); H02P 3/22 (2013.01); B60L 2210/42 (2013.01);
Abstract
A method for controlling an electric motor, the method comprising receiving a command to place the electric motor in a short circuit mode; varying a limit to an available pulse width modulation depth for controlling current flow in the electric motor to a predetermined value over a predetermined time period or at a predetermined rate of change; wherein upon the pulse width modulation depth limit being varied to the predetermined value placing the electric motor in the short circuit mode.