Patent ID: 8829709

Claim:
A method for operating an electrical network, the network having at least one electrical accumulator, at least one electric machine, and at least one inverter controlling the electric machine, the method comprising: electrically disconnecting the electrical accumulator from the electrical network when a malfunction is detected; performing the following steps on the electrical network when the electrical accumulator is electrically disconnected: switching the inverter to a short-circuit operating mode when a specifiable voltage limit of a network voltage of the electrical network is subsequently exceeded; after switching the inverter, switching power semiconductors of the inverter so that the driven electric machine induces a voltage and provides it via free-wheeling diodes on the electrical network; and after switching the power semiconductors of the inverter, using the induced voltage for operating the electric machine as a generator such that a specifiable network voltage is set by the electric machine; wherein the electrical network is for a hybrid motor vehicle having the at least one electrical machine and an internal combustion engine.