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:
Dec. 10, 2019
Filed:
Dec. 01, 2016
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Jiyao Wang, Canton, MI (US);
Wei Xu, Canton, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02P 27/08 (2006.01); B60L 11/18 (2006.01); H02P 6/28 (2016.01); B60L 53/14 (2019.01); B60L 50/51 (2019.01); B60L 53/24 (2019.01);
U.S. Cl.
CPC ...
B60L 11/1814 (2013.01); B60L 50/51 (2019.02); B60L 53/14 (2019.02); B60L 53/24 (2019.02); H02P 6/28 (2016.02); H02P 27/08 (2013.01); B60L 2210/10 (2013.01); Y02T 10/642 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/7072 (2013.01); Y02T 10/7216 (2013.01); Y02T 90/127 (2013.01); Y02T 90/14 (2013.01); Y10S 903/906 (2013.01);
Abstract
A vehicle powertrain includes an inverter coupled with an electric machine and a controller. The controller may be configured to dither a base frequency of a pulse width modulated (PWM) signal, by less than an amount that is based on a rotational speed of the machine and the base frequency, to operate the inverter such that energy at sidebands and harmonics of the base frequency are reduced by distributing the energy to reduce audible vibrations of the powertrain.