Patent ID: 9065366
Filing Date: 2015-06-23
Classification: B60L,H02M,H02P,Y02T

Abstract:
1. A control unit for controlling an inverter which actuates an at least three-phase electric machine used as a drive assembly in a motor vehicle, the inverter including switching elements in the form of half-bridges which are each electrically connected to a respective phase of the electric machine, the control unit comprising: means for performing the following in response to the failure of a first switching element of a first half-bridge connected to a first phase: (a) one of (i) permanently open a second switching element of the first half-bridge when the first switching element is permanently closed on account of failure, or (ii) permanently close the second switching element when the first switching element is permanently opened on account of failure; and (b) in a first angular range of an electrical rotation, which is uninfluenced by the first phase, actuate all switching elements of the remaining half-bridges.