Title:
CONTROL DEVICE FOR ACTIVE FILTER
Document Type and Number:
WIPO Patent Application WO/2018/061352
Kind Code:
A1
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.
Inventors:
KAWASHIMA REIJI (JP)
Application Number:
PCT/JP2017/022884
Publication Date:
April 05, 2018
Filing Date:
June 21, 2017
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
H02M1/42; G05F1/70; H02J3/01; H02J3/16; H02J3/18; H02M1/12; H02M7/48
Domestic Patent References:
| WO2014171233A1 | 2014-10-23 | |||
| WO2016051500A1 | 2016-04-07 |
Foreign References:
| JP2007282365A | 2007-10-25 | |||
| JPH0956086A | 1997-02-25 | |||
| JP2003324847A | 2003-11-14 | |||
| JP2014207798A | 2014-10-30 | |||
| JPH10210658A | 1998-08-07 | |||
| JP2016116330A | 2016-06-23 |
Other References:
See also references of EP 3514931A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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