Title:
CONTROL DEVICE FOR 3-TERMINAL STATIC DC TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2019/039410
Kind Code:
A1
Abstract:
This control device for driving and controlling a static DC transformer in which three or more self-exciting single-phase inverters each having a DC capacitor connected in parallel are connected via a high-frequency transformer, is provided with: a detector that detects the voltage of each DC terminal in a state where a DC voltage is applied to one DC terminal and the DC terminal is maintained at a fixed voltage; a minimum voltage terminal selection circuit that selects, on the basis of the detection result of the detector, a DC terminal of the lowest voltage from among DC terminals to which a DC voltage has not been applied; and an arithmetic circuit that causes one of the self-exciting single-phase inverters to which the DC voltage has been applied to generate an AC voltage of a size proportional to a difference between the voltage of the DC terminal to which the DC voltage has been applied and the voltage of the DC terminal selected by the minimum voltage terminal selection circuit.
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Inventors:
KADO YUICHI (JP)
IMAI TAKASHI (JP)
IMAI TAKASHI (JP)
Application Number:
PCT/JP2018/030561
Publication Date:
February 28, 2019
Filing Date:
August 17, 2018
Export Citation:
Assignee:
IKS CO LTD (JP)
International Classes:
H02J1/00; H02M3/28; H02M7/48
Foreign References:
| JP2017011964A | 2017-01-12 | |||
| JP2011200095A | 2011-10-06 | |||
| JP2009232502A | 2009-10-08 | |||
| JPH11196529A | 1999-07-21 | |||
| JP2002305873A | 2002-10-18 | |||
| JPH11196529A | 1999-07-21 | |||
| JP2008259253A | 2008-10-23 |
Other References:
See also references of EP 3675304A4
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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