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Title:
GRID-CONNECTION CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2014131374
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a grid-connection control device that prevents the occurrence of malfunction.SOLUTION: A grid-connection control device 10A includes: an input capacitor Ci connected in parallel to a DC power supply E; a switching unit SW1 controlling charge and discharge of the input capacitor Ci; a switching unit SW2 controlling conduction and disconnection of a current from the input capacitor Ci and the DC power supply E to a load Rl side; a reflux diode Db; a current-limiting reactor Lf limiting a current flowing to the load Rl side; an output capacitor Co connected in parallel to the DC power supply E; and a control unit CU controlling conduction and disconnection of a semiconductor switch Qi and a semiconductor switch Q1, and periodically switching conduction and disconnection of the semiconductor switch Q1.

Inventors:
HAYASHI YUSUKE
MATSUMOTO AKIRA
Application Number:
JP2012286621A
Publication Date:
July 10, 2014
Filing Date:
December 28, 2012
Export Citation:
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Assignee:
NTT FACILITIES INC
International Classes:
H02J1/00; H02H7/20; H02H9/02; H02H11/00; H03K17/16; H03K17/687; H03K17/695
Domestic Patent References:
JPH07222438A1995-08-18
JPH11146637A1999-05-28
Attorney, Agent or Firm:
特許業務法人はるか国際特許事務所