Switched-mode power supply for powering a frequency converter
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United States of America Patent
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Mar 20, 2018
Issued Date -
N/A
app pub date -
Apr 5, 2016
filing date -
Apr 23, 2015
priority date (Note) -
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Abstract
A switched-mode power supply for supplying an operating voltage to a frequency converter includes a supply capacitor configured to supply the operating voltage to a control device for generating control signals for semiconductor switches of the switched-mode power supply. The supply capacitor is chargeable through a start-up circuit from a DC link of the frequency converter. The start-up circuit includes a current regulator that is configured to control a total current from the DC link to the start-up circuit.
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