Multiphase voltage transformer for a supply network and method for powering down an intermediate circuit voltage of this supply network
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United States of America Patent
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Jun 6, 2023
Grant Date -
Aug 11, 2022
app pub date -
Apr 15, 2020
filing date -
May 7, 2019
priority date (Note) -
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Abstract
A multiphase voltage transformer for an electrical supply network for supplying an electrical machine with electrical energy from an electrical energy storage system. This electrical supply network includes the multiphase voltage transformer, an output current converter connected downstream of this transformer and an intermediate circuit connected between the transformer and the output current converter. The transformer includes a circuit arrangement having parallel-connected voltage transformer units at the input end, each of these units having an inductance and two semiconductor switch units and a control unit for actuating the semiconductor switch units. The control unit is configured so as to actuate the semiconductor switch units in an intermediate circuit discharging operation such that it powers down the intermediate circuit voltage of the intermediate circuit in less than a second into the low voltage range. A corresponding electrical supply network, an energy supply system having network and a method are provided.
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