Title:
INVERTER INTERCONNECTION METHOD
Document Type and Number:
Japanese Patent JP2022159880
Kind Code:
A
Abstract:
To provide an inverter interconnection method that feedforward-compensates the amplitude and phase of a grid voltage before interconnection according to the fluctuation of an output voltage after filtering.SOLUTION: A trigonometric function including a target value of a phase difference from a grid voltage and a target value of the amplitude ratio, in which the phase and the amplitude of an inverter output voltage after a smoothing filter are adjusted to gradually approach the phase and amplitude of the grid voltage is obtained to obtain a formula for feedforward compensation of the grid voltage, this feedforward compensation causes the phase and amplitude of the filtered inverter output voltage and the phase and amplitude of the grid voltage to match, and the adjustment amount of the target value of the feedforward compensation is gradually decreased after connection with the electric power system.SELECTED DRAWING: Figure 2
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Inventors:
ALIPOOR JABER
KINTSU KEISUKE
KINTSU KEISUKE
Application Number:
JP2021064337A
Publication Date:
October 18, 2022
Filing Date:
April 05, 2021
Export Citation:
Assignee:
DIAMOND&ZEBRA ELECTRIC MFG CO LTD
International Classes:
H02M7/48
Attorney, Agent or Firm:
Shuji Sugimoto
Takeo Tsutsumi
Daisuke Kaneko
Yuka Kobayashi
Kenichi Nakata
Akio Otomo
Takeo Tsutsumi
Daisuke Kaneko
Yuka Kobayashi
Kenichi Nakata
Akio Otomo