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:
Sep. 20, 2011
Filed:
Mar. 19, 2009
Keith D. Van Maanen, Birmingham, MI (US);
Sean E. Gleason, West Bloomfield, MI (US);
Chandra S. Namuduri, Troy, MI (US);
Steven V. Wybo, Grosse Park, MI (US);
Keith D. Van Maanen, Birmingham, MI (US);
Sean E. Gleason, West Bloomfield, MI (US);
Chandra S. Namuduri, Troy, MI (US);
Steven V. Wybo, Grosse Park, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method sustains auxiliary power generation aboard a mild hybrid electric vehicle (HEV) in response to a high-voltage (HV) electrical fault condition and executes one of a pair of default limp-home modes depending on the state of the engine at the time of the fault. Each limp-home mode sustains auxiliary power generation during the fault, and at least one mode charges capacitors in the HV bus circuit to provide magnetizing current to a motor generator unit (MGU). An HEV includes a controller and algorithm for sustaining auxiliary power generation during the above fault condition, with the algorithm adapted to control output of an auxiliary power module (APM) and execute one of a pair of default limp-home modes, including a mode in which the APM charges the capacitors to enable a power inverter module (PIM) to provide an initial excitation current to the MGU after the starter motor restarts the engine.