Title:
POWER CONVERSION DEVICE, MOTOR DRIVE DEVICE, AND REFRIGERATION CYCLE APPLICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/075210
Kind Code:
A1
Abstract:
A power conversion device (200) comprises: a rectification unit (3) that rectifies first AC power supplied from a commercial power source (1); a smoothing capacitor (5) connected to the output end of the rectification unit (3); an inverter (30) which is connected to both ends of the smoothing capacitor (5) and which generates and outputs second AC power to a motor (7); and a control device (100) that controls the operation of the inverter (30) to control the rotation speed of the motor (7), wherein the control device (100) implements a reduction control to reduce a pulsation component generated due to the influence of the dead time of a switching element provided in the inverter (30) and the induced voltage distortion of the motor (7), said pulsation component being superimposed on the three-phase current that is outputted from the inverter (30) to the motor (7).
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Inventors:
TOYODOME SHINYA (JP)
HATAKEYAMA KAZUNORI (JP)
SASAKI RYOICHI (JP)
ARISAWA KOICHI (JP)
HATAKEYAMA KAZUNORI (JP)
SASAKI RYOICHI (JP)
ARISAWA KOICHI (JP)
Application Number:
PCT/JP2022/037262
Publication Date:
April 11, 2024
Filing Date:
October 05, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P21/05; H02P27/06
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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