POWER CONVERTER, MOTOR DRIVING APPARATUS, AND REFRIGERATION CYCLE APPLIED APPARATUS
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United States of America Patent
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Issued Date -
Feb 22, 2024
app pub date -
Feb 12, 2021
filing date -
Feb 12, 2021
priority date (Note) -
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Abstract
A power converter includes: a rectifying and boosting unit that rectifies first alternating-current power supplied from a commercial power supply and boosts a voltage of the first alternating-current power; a capacitor connected to an output end of the rectifying and boosting unit; an inverter to convert power output from the rectifying and boosting unit and the capacitor into second alternating-current power, and output the second alternating-current power to a device; and a control unit that reduces a current flowing through the capacitor by controlling the rectifying and boosting unit and by controlling the inverter such that the inverter outputs, to the device, the second alternating-current power containing a ripple dependent on a ripple of power flowing from the rectifying and boosting unit into the capacitor. The control unit controls in accordance with a load state.
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