Power converter, an electric power system, and a method for controlling an electric power system
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United States of America Patent
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Nov 3, 2020
Grant Date -
May 16, 2019
app pub date -
Oct 30, 2018
filing date -
Nov 15, 2017
priority date (Note) -
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Abstract
A power converter for an electric power system comprises a switching circuit (102) for supplying, in a first operating mode of the power converter, voltages for driving a rotating electric machine. The power converter comprises a contactor system (110) and a controller (109) for using, in a second operating mode of the power converter, the switching circuit and at least one of windings (115) of the rotating electric machine as a voltage-decreasing direct voltage converter between direct voltage terminals of the power converter. Therefore, the switching circuit of the power converter can be utilized both for driving the rotating electric machine and, for example, for charging a battery element connected to a direct voltage terminal of the power converter.
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