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AssigneeValeo Siemens eAutomotive Germany GmbH
InventorsKarsten WIEDMANN, Timur WERNER, Markus REYMANN
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The invention relates to a control device for an inverter which includes three half-bridges each having a first power switching element connected to a first DC voltage potential and a second power switching element connected to a second DC voltage potential. The control device is arranged for driving the power switching elements for converting a DC voltage present between the DC voltage potentials into a polyphase AC current in a normal operating mode and for transferring the inverter from the normal operating mode into a safe operating mode. The control device is further set up to alternately drive the power switching elements in the safe operating mode for switching single-phase active short circuits and for switching two-phase active short circuits.
A control device (2) for an inverter (1) comprising three half-bridges (9u, 9v, 9w) each having a first power switching element (11u, 11v, 11w) connected to a first DC voltage potential (10) and a second power switching element (13u, 13v, 13w) connected to a second DC voltage potential (12), wherein the control device (2) is arranged for driving the power switching elements (11u, 11v, 11w, 13u, 13v, 13w) to convert a DC voltage present between the DC voltage potentials (10, 12) into a polyphase AC current in a normal operating mode and for transferring the inverter (1) from the normal operating mode to a safe operating mode,
A method of operating an inverter (1) comprising three half-bridges (9u, 9v, 9w) each having a first power switching element (11u, 11v, 11w) connected to a first DC potential (10) and having a second power switching element (13u, 13v, 13w) connected to a second DC potential (12), comprising the steps of:
Dependencies are inferred from the claim text.