Method for controlling the operation of an arrangement of at least two electric machines, and motor vehicle

US9007008B2 · kind B2 · utility

Assignee

• AUDI AG · DE

Inventors

• Alexander Kruse · Ingolstadt, DE
• Tobias Schneider · Brechen, DE

Key dates

• Filing date: Oct 26, 2012
• Grant date: Apr 14, 2015
• Expiry date: Oct 26, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/72
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for controlling the operation of an arrangement of at least two electric machines coupled to different wheels of a motor vehicle and connected to a battery which provides an actual minimum and maximum limiting current for the electric machines. Desired torques are provided for the electric machines by a drive control logic. A desired current resulting from the desired torque is ascertained for each electric machine, and the sum of the desired currents are compared with the maximum and minimum limiting current. If the sum lies outside an interval defined by the limiting currents, the desired currents are adjusted using at least one change rule such that the sum of the desired currents lies within the interval. Adjusted desired torques are determined from the adjusted desired currents and used to control the electric machines.