Patent · US Active

Method for determining a power limiting value for an electric machine in a vehicle, computer program and control unit for controlling an electric machine in a vehicle

US8851218B2 · kind B2 · utility

0Cited by

1References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Martin Wirth · Hitzendorf, AT
Daniel Raichle · Lambach, DE
Alexander Scheidle · Karlsruhe, DE
Martin Eisenhardt · Renningen, DE

Key dates

Filing date	Feb 25, 2011
Grant date	Oct 7, 2014
Priority date	—
Expiry date	Aug 29, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S903/907
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

In a method for determining a power limiting value for an electric machine in a vehicle, the electric machine being assigned an energy storage device, an intermediate power value is calculated from a maximally allowable current of the energy storage device and an instantaneous voltage. A corrected intermediate power value is determined by adding at least one power loss to the intermediate power value. A first correction value is determined for reducing the absolute value of the corrected intermediate power value if an instantaneous power of the energy storage device is greater than the absolute value of the calculated intermediate power value. The power limiting value is determined by superimposing the first correction value on the corrected intermediate power value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.