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1. (WO2018061352) CONTROL DEVICE FOR ACTIVE FILTER

Pub. No.:    WO/2018/061352    International Application No.:    PCT/JP2017/022884
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Thu Jun 22 01:59:59 CEST 2017
IPC: H02M 1/42
G05F 1/70
H02J 3/01
H02J 3/16
H02J 3/18
H02M 1/12
H02M 7/48
Applicants: DAIKIN INDUSTRIES, LTD.
ダイキン工業株式会社
Inventors: KAWASHIMA Reiji
川嶋 玲二
Title: CONTROL DEVICE FOR ACTIVE FILTER
Abstract:
Provided is a control device (71) controlling the operation of an active filter (6) that is connected in parallel with a load (2) at an installation point (P) with respect to an AC power supply (1) and supplies a compensation current (Ic) to the installation point so as to compensate for harmonic components of a load current (Io) flowing through the load. The control device is provided with: a dq converter (703) that converts the load current (Io) into a d-axis current component and a q-axis current component; high-pass filters (704, 705) that extract harmonic components from at least the d-axis current component output of the dq converter; and multipliers (716, 717) that output, as current command values, the result obtained by multiplying the d-axis current component output of the high-pass filter and the q-axis current component output of the dq converter or the high-pass filter by respective compensation factors (Kd, Kq). The compensation factor (Kq) of the q-axis current in the multiplier can be adjusted.