Rectifier and motor control apparatus having power regeneration function
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United States of America Patent
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Jul 12, 2022
Grant Date -
Jun 10, 2021
app pub date -
Dec 8, 2020
filing date -
Dec 9, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
The rectifier includes: a main circuit unit configured to perform power conversion between AC power on a side of a three-phase AC power supply and DC power on a DC side by rectifying operation of a rectifying device and ON-OFF operation of a switching device; a power calculation unit configured to calculate a value of a power flowing between the side of the three-phase AC power supply and the DC side via the main circuit unit; and a control unit configured to perform control to execute the ON-OFF operation of the switching device, wherein the control unit changes a length of an ON period per cycle in the ON-OFF operation executed on the switching device according to the value of the power calculated by the power calculation unit.
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