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. 04, 2013
Filed:
Oct. 22, 2012
Aerovironment, Inc., Monrovia, CA (US);
Thaddeus Benjamin Matuszeski, Sherman Oaks, CA (US);
Rolland Mitchell Koch, Simi Valley, CA (US);
Scott Garret Berman, Los Angeles, CA (US);
Mujahid Abdulrahim, Canoga Park, PA (US);
AeroVironment, Inc., Monrovia, CA (US);
Abstract
An electric power management system of a vehicle may interconnect a power plant, a propeller drive unit, and a battery via a bus. A command limiting controller may direct the operation of the power plant and the propeller drive unit in fast and slow modes of operation, the fast mode of operation operating at a higher bus voltage than at a slow mode of operation. The command limiting controller may generate a bus current to drive the propeller drive unit according to a command limiting, voltage-versus-current curve that adjusts the bus current depending on an amount of voltage on the power bus; where the command limiting curve includes a minimum voltage portion, a maximum voltage portion and a control range therebetween having upper and lower voltage limits and upper and lower current limits for enhanced reliability and stable control of the propeller drive unit.