Method for operating an electrical circuit arrangement, an electrical circuit, and a motor vehicle
AssigneeAudi AG
InventorsTobias GRAßL, Mathias KORN
Life of this patent
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Abstract
A method for operating an electrical circuit arrangement comprising an electrical circuit and an electrical machine, wherein when at least one triggering criterion is fulfilled the electrical machine is switched via the electrical circuit to a freewheeling, after which a time duration is determined in dependence on at least one measurement value describing a change in the stator current in the electrical machine, and the electrical machine is operated in the freewheeling for this duration and then it is switched via the electrical circuit to an active short circuiting.
Claims13
A method for operating an electrical circuit arrangement comprising an electrical circuit and an electrical machine , the method comprising:
- when at least one triggering criterion is fulfilled, switching the electrical machine via the electrical circuit to a freewheeling,
- after switching the electrical machine, determining a time duration in dependence on at least one measurement value describing a change in the stator current in the electrical machine, and
- operating the electrical machine in the freewheeling for the determined time duration and, at the end of the determined time duration, switching the electrical machine via the electrical circuit to an active short circuiting.
An electrical circuit comprising a controller, wherein the electrical circuit is or can be connected to an electrical machine and the controller is designed to carry out a method comprising:
- when at least one triggering criterion is fulfilled, switching the electrical machine via the electrical circuit to a freewheeling,
- after switching the electrical machine, determining a time duration in dependence on at least one measurement value describing a change in the stator current in the electrical machine, and
- operating the electrical machine in the freewheeling for the determined time duration and, at the end of the determined time duration, switching the electrical machine via the electrical circuit to an active short circuiting.
Dependencies are inferred from the claim text.