CONTROL DEVICE - MITSUBISHI ELECTRIC CORP

Title:

CONTROL DEVICE

Document Type and Number:

WIPO Patent Application WO/2020/217428

Kind Code:

A1

Abstract:

This control device (10) for controlling a self-excited power converter (20) connected to an AC system (101) comprises: a phase generation unit (221) that generates the phase of a voltage command of the power converter (20); a voltage control unit (230) that generates a voltage value of the voltage command; and a command unit (250) that outputs, to the power converter, the voltage command having the generated phase and the generated voltage value. The voltage control unit (230) includes: a voltage compensation unit (231) that calculates a compensation voltage on the basis of a voltage deviation between a reference voltage and an interconnection point voltage at an interconnection point between the AC system (101) and the power converter (20); a droop calculation unit (234) that, when the AC system (101) is a single system that is not connected to a power generator (51), calculates a first droop value according to the magnitude of an interconnection point current flowing in the interconnection point; and a calculation unit (232) that calculates the voltage value of the voltage command on the basis of a deviation between the compensation voltage value and the first droop value.

Inventors:

UDA RYOSUKE (JP)
KIKUCHI TAKESHI (JP)
FUJIWARA SHUHEI (JP)
KONO YOSHIYUKI (JP)

Application Number:

PCT/JP2019/017771

Publication Date:

October 29, 2020

Filing Date:

April 25, 2019

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

H02M7/48; H02J3/36; H02M7/49

Foreign References:

JP2018129963A	2018-08-16
JP2003134669A	2003-05-09
JP2005094897A	2005-04-07
JPS61227637A	1986-10-09
JP4673428B2	2011-04-20
JPS63299780A	1988-12-07
JP2000217258A	2000-08-04
JP4287031B2	2009-07-01
JPH0133636B2	1989-07-14
JP2018129963A	2018-08-16

Other References: