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:
Jun. 25, 2019
Filed:
Sep. 12, 2017
Applicant:
Sevcon Limited, Gateshead, GB;
Inventors:
Assignee:
Sevcon Limited, Gateshead, GB;
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/08 (2016.01); H02P 6/06 (2006.01); H02P 21/00 (2016.01); H02P 27/06 (2006.01); H02P 6/28 (2016.01); H02P 25/024 (2016.01); H02P 6/00 (2016.01);
U.S. Cl.
CPC ...
H02P 6/08 (2013.01); H02P 6/007 (2013.01); H02P 6/06 (2013.01); H02P 6/28 (2016.02); H02P 21/0089 (2013.01); H02P 25/024 (2016.02); H02P 27/06 (2013.01); H02P 2207/05 (2013.01);
Abstract
An apparatus for controlling an AC power supply for an electric motor, said AC power supply being derived from a DC voltage. The apparatus including a comparer configured to provide a comparison of a modulation index of a motor control signal with a reference value. This current data provider is configured to provide current data based on a torque demand signal; a speed signal indicating the speed of rotation of the AC motor; and an indication of the DC voltage modified on the comparison for control of the motor control signal which is based on the motor current data.