| 摘要 |
The invention relates to an inverter for an electrical machine and to a method for operating an inverter for an electrical machine. In this case, the inverter (2) has at least one output stage unit (8) for producing a connection between the electrical machine (1) and a power supply system (3), a control unit (6) for controlling the at least one output stage unit (8), a supply unit (7), which is independent of the power supply system (3), for supplying power to the output stage unit or units (8), at least one emergency operation controller (12), which is associated with the output stage unit or units (8), in order to control the output stage unit or units (8), such that switching elements within the output stage unit (8) are switched to a short-circuit mode, and at least one emergency operation supply (13) which is associated with the output stage unit or units (8), is designed to produce supply power for the output stage unit or units from the power supply system (3). Furthermore, a coordination controller (14) is provided, which activates or deactivates the emergency operation controller (12) depending on a status signal from the independent supply unit (7) and a readiness signal from the control unit (6). |
