Title:
INVERTER DEVICE, COMPRESSOR DRIVE DEVICE, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2020/213045
Kind Code:
A1
Abstract:
The purpose of the present invention is to obtain an inverter device that can increase the accuracy with which the current of a DC bus is detected, and suppress phase current ripple. An inverter control unit (7) included in this inverter device (100): generates a command voltage vector (Vs) on the basis of a DC current (Idc) flowing in a DC bus (N) detected by a DC current detector circuit (5); sets as a first period a portion of a reflection period that reflects the command voltage vector (Vs); sets as a second period a period that does not correspond to the first period of the reflection period; generates, in the first period, a PWM drive signal (UP-WN) on the basis of a first voltage vector (Vs1) obtained by outputting, for a specified time, two non-zero basic voltage vectors adjacent to the command voltage vector (Vs), and generates, in the second period, a PWM drive signal (UP-WN) on the basis of a second voltage vector (Vs2) that is the same as the command voltage vector (Vs) when combined with the first voltage vector (Vs1).
Inventors:
KASHIMA MITSUO (JP)
Application Number:
PCT/JP2019/016213
Publication Date:
October 22, 2020
Filing Date:
April 15, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P21/22; H02M7/48; H02P27/08
Domestic Patent References:
| WO2018055671A1 | 2018-03-29 |
Foreign References:
| JP2013115883A | 2013-06-10 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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