Device for determining peak current in inverter
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United States of America Patent
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May 19, 2020
Grant Date -
Oct 3, 2019
app pub date -
Feb 22, 2019
filing date -
Mar 27, 2018
priority date (Note) -
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Abstract
Disclosed is a device for detecting an instantaneous maximum output current of an inverting module as a peak-current thereof. The inverting module converts a direct current (DC) link voltage to an alternate current (AC) voltage, and includes three-phases legs. Each leg has lower and upper switching elements connected in series. The device includes a shunt resistor serially connected to a lower switching element of each leg of the inverting module; a current detection module configured for detecting an output current from a signal output from each shunt resistor; and a summer configured for receiving and summing the detected output currents from the current detection module and outputting the instantaneous maximum output current of the inverting module as the peak-current thereof.
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