Title:
SYSTEM-LINKED INVERTER DEVICE AND STABILIZATION CONTROL METHOD
Document Type and Number:
Japanese Patent JP2019221040
Kind Code:
A
Abstract:
To solve the problem in which there is a fear that a system-linked system may become unstable due to an influence of a resonance between an inductor on a power system side and a capacitor in a filter circuit, so that normal operation may not be possible.SOLUTION: A system-linked inverter device 20 includes: a DC/AC inverter 23, connected to a power grid 2 so as to be linked, for switching input power and converting it to predetermined power. A control circuit 30 for controlling the switching; and a filter circuit 24 for removing harmonic components of the predetermined power and outputting the same to the grid power side. The control circuit 30 calculates a q-axis voltage Vq by performing rotation coordinate conversion on a voltage measurement value vac of a system voltage Vac by a three-phase/two-phase voltage converter 31 and a rotational coordinate converter 32 and feeds back to a q-axis current control command side to perform a switching control of the DC/AC inverter 23.SELECTED DRAWING: Figure 1
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Inventors:
GUO ZHONGWEI
ISHIWATARI HIROSHI
KINOSHITA TAKASHI
ISHIWATARI HIROSHI
KINOSHITA TAKASHI
Application Number:
JP2018115633A
Publication Date:
December 26, 2019
Filing Date:
June 18, 2018
Export Citation:
Assignee:
SHINDENGEN ELECTRIC MFG
International Classes:
H02M7/48; H02J3/01; H02J3/38
Domestic Patent References:
| JP2011188665A | 2011-09-22 | |||
| JP2017225214A | 2017-12-21 | |||
| JP2016012971A | 2016-01-21 | |||
| JP2015180120A | 2015-10-08 |
Foreign References:
| US20110317460A1 | 2011-12-29 |
Attorney, Agent or Firm:
Kakimoto Yasunari
Kazuyuki Hirayama
Mitsukazu Kondo
Kazuyuki Hirayama
Mitsukazu Kondo