Title:
POWER CONVERSION DEVICE FOR SYSTEM INTERCONNECTION
Document Type and Number:
Japanese Patent JP2016032325
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a power conversion device for system interconnection capable of stably continuing operation without causing serious failure stop even when an accident occurs in a power system.SOLUTION: A controller 7 includes: a system voltage control unit 14 for calculating a current reference Iref of reactive current for controlling voltage of a power system 4 on the basis of voltage detected by a voltage detector 5; a reactive current detection unit 11 for detecting reactive current Iq output from a self-excited converter 1 on the basis of current detected by a current detector 6; a reactive current control unit 18 for calculating a voltage reference for voltage output from the self-excited converter 1 so that the reactive current Iq detected by the reactive current detection unit 11 becomes a current reference Iref*; a gate pulse generation unit 19 for generating a drive signal to be supplied to a switching element of the self-excited converter 1 on the basis of the voltage reference; and a current limiter 15 for limiting the current reference Iref calculated by the system voltage control unit 14 when an overload state of the self-excited converter 1 has been detected on the basis of the current detected by the current detector 6.SELECTED DRAWING: Figure 3
Inventors:
MORISHIMA NAOKI
ISHITOBI HIROKI
ISHITOBI HIROKI
Application Number:
JP2014152781A
Publication Date:
March 07, 2016
Filing Date:
July 28, 2014
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELEC INC
International Classes:
H02J3/18; H02J3/38; H02M7/48
Domestic Patent References:
| JP2012075292A | 2012-04-12 | |||
| JP2008305041A | 2008-12-18 | |||
| JPH08308096A | 1996-11-22 | |||
| JP2005065423A | 2005-03-10 | |||
| JP2011211803A | 2011-10-20 |
Attorney, Agent or Firm:
Fukami patent office