Title:
UNINTERRUPTIBLE POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/066246
Kind Code:
A1
Abstract:
This uninterruptible power supply device (100) is provided with a battery (10) and a plurality of uninterruptible power supply modules (31), (32) each having a converter (3), a chopper (5) for changing the value of a DC voltage output from the battery (10) or the converter (3), and an inverter (4). The uninterruptible power supply device (100) is provided with a first control unit (2) for outputting phase information and a voltage command which control the timing of the switching operation of switching elements included in the chopper (5) and the inverter. The plurality of uninterruptible power supply modules (31), (32) are each provided with a second control unit (32) which, on the basis of the phase information and the voltage command, synchronizes the phase of the peak or valley of a chopper carrier for controlling the switching operation of the chopper (5) with the phase of the peak of an inverter carrier for controlling the switching operation of the switching elements and controls the switching operation of the chopper (5) using the synchronized chopper carrier.
Inventors:
ISHIDA SATOSHI (JP)
Application Number:
PCT/JP2019/028771
Publication Date:
April 02, 2020
Filing Date:
July 23, 2019
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD (JP)
International Classes:
H02M7/48
Foreign References:
| JP2018007377A | 2018-01-11 | |||
| JP2002345252A | 2002-11-29 | |||
| JP2012055112A | 2012-03-15 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Download PDF:
Previous Patent: SOLID-STATE IMAGING ELEMENT AND IMAGING DEVICE
Next Patent: MAGNET UNIT FOR MAGNETRON SPUTTERING DEVICE
Next Patent: MAGNET UNIT FOR MAGNETRON SPUTTERING DEVICE