Converter arrangement and method for operating a converter arrangement
AssigneeHitachi Energy Ltd
InventorChristoph Haederli
Life of this patent
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Abstract
A converter arrangement comprises a converter with a first side and a second side, a first connection line connected to the first side of the converter, a short-circuit switch connected to the first connection line, and a controller having a terminal coupled to the converter and an output connected to a control terminal of the short-circuit switch. A method for operating a converter arrangement comprises providing a detection signal by a converter, receiving the detection signal by a controller, providing a set signal to a short-circuit switch by the controller in case the controller determines a fault of the converter by evaluating the detection signal, and setting the short-circuit switch in a conducting state by the set signal.
Claims19
A converter arrangement, comprising:
- a converter with a first side and a second side,
- a first connection line connected to the first side of the converter,
- a short-circuit switch connected to the first connection line,
- a controller having a terminal coupled to the converter and an output connected to a control terminal of the short-circuit switch,
- a further first connection line connected to the second side of the converter,
- an auxiliary short-circuit switch connected to the further first connection line, and a machine coupled to the second side of the converter via the further first connection line,
- wherein the converter is configured to provide a detection signal,
- wherein the controller is configured to receive and evaluate the detection signal, and
- wherein upon detection of a converter internal fault, the controller triggers fast shorting of the first side via the short-circuit switch and blocks converter pulses simultaneously, driving currents to zero and making full converter blocking voltage available on the machine side.
A method for operating a converter arrangement, comprising
- providing a converter with a first side and a second side,
- providing a detection signal by the converter,
- receiving the detection signal by a controller,
- providing a set signal to a short-circuit switch by the controller in case the controller determines a fault of the converter by evaluating the detection signal, and
- setting the short-circuit switch in a conducting state by the set signal, wherein the converter arrangement comprises
- a further first connection line connected to the second side of the converter,
- an auxiliary short-circuit switch connected to the further first connection line, and
- a machine coupled to the second side of the converter via the further first connection line,
- wherein upon detection of a converter internal fault, the controller triggers fast shorting of the first side via the short-circuit switch and blocks converter pulses simultaneously, driving currents to zero and making full converter blocking voltage available on the machine side.
Dependencies are inferred from the claim text.