Title:
POWER CONVERSION DEVICE, AND CONTROL DEVICE AND CONTROL METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2019/167173
Kind Code:
A1
Abstract:
A power conversion device according to one embodiment is provided with: a rectifier circuit for full-wave rectifying a voltage of a three-phase AC power supply; a capacitor provided on the output side of the rectifier circuit and outputting a DC voltage; an inverter circuit for converting the DC voltage to an AC voltage; a phase estimation unit for estimating the voltage phase of the three-phase AC power supply from the DC voltage; a reference voltage calculation unit which, on the basis of the estimated voltage phase, calculates a reference voltage representing a calculated value of the DC voltage; a compensation value calculation unit for calculating a compensation value on the basis of the DC voltage and the reference voltage; an inverter control unit for controlling the inverter circuit on the basis of at least the compensation value; and a compensation control unit for controlling the degree of influence of the compensation value in the inverter control unit, on the basis of an inverter output value representing the magnitude of the output power of the inverter circuit.
Inventors:
TAKASE YOSHIYASU (JP)
BALOCH NOOR AAMIR (JP)
BALOCH NOOR AAMIR (JP)
Application Number:
PCT/JP2018/007524
Publication Date:
September 06, 2019
Filing Date:
February 28, 2018
Export Citation:
Assignee:
YASKAWA ELECTRIC CORP (JP)
International Classes:
H02M7/48; H02P27/06
Foreign References:
| JP2013215061A | 2013-10-17 | |||
| JP2012151966A | 2012-08-09 | |||
| JP2004336990A | 2004-11-25 |
Attorney, Agent or Firm:
FELICITE PATENT PROFESSIONAL CORPORATION (JP)
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