Title:
SYSTEM INTERCONNECTION POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/029313
Kind Code:
A1
Abstract:
According to the present invention, a drop voltage Vzs is calculated on the basis of an output current detection value Iac and a virtual synchronous impedance Zs or a corrected virtual synchronous impedance Zs', and a value obtained by subtracting the drop voltage Vzs from an internally induced voltage Ef is calculated as a system voltage instruction value Vac*. A Zs calculation unit 7 limits an output current phase θ to be within an effective range by a phase limiter 12a, and calculates the corrected virtual synchronous impedance Zs' on the basis of the limited output current phase θ, the internally induced voltage Ef, a system voltage detection value Vac, and the current limit value Ilim. Accordingly, in the system interconnection power conversion device which controls a virtual synchronous generator, an overcurrent is suppressed to continue an operation, and synchronizing power generated by the operation of the virtual synchronous impedance is permitted to be held.
Inventors:
SUZUKI KENICHI (JP)
TAKAMI JUN (JP)
SAMEJIMA RYOTA (JP)
NODA HIDEKI (JP)
MAEDA NAOTO (JP)
INOUE TOSHIYA (JP)
SHOJI KAZU (JP)
TAKAMI JUN (JP)
SAMEJIMA RYOTA (JP)
NODA HIDEKI (JP)
MAEDA NAOTO (JP)
INOUE TOSHIYA (JP)
SHOJI KAZU (JP)
Application Number:
PCT/JP2020/030141
Publication Date:
February 18, 2021
Filing Date:
August 06, 2020
Export Citation:
Assignee:
TOKYO ELECTRIC POWER CO HOLDINGS INC (JP)
MEIDENSHA ELECTRIC MFG CO LTD (JP)
MEIDENSHA ELECTRIC MFG CO LTD (JP)
International Classes:
H02J3/24; H02J3/38; H02M7/48
Foreign References:
| JP2019080476A | 2019-05-23 | |||
| JP2019004571A | 2019-01-10 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
Download PDF: