Title:
CONTROLLER FOR POWER CONVERTER
Document Type and Number:
Japanese Patent JP3323895
Kind Code:
B2
Abstract:
PURPOSE: To suppress the wide fluctuation of a DC voltage by accurately detecting the electric energy flowing to a DC side through a power converter and precisely processing the electric energy in a normal state or even when such a disturbance occurs that an unbalanced voltage is generated on the AC side of the power converter or an unbalanced current flows to the AC side of the converter.
CONSTITUTION: A controller for a power converter in which two converters 1 and 2 which convert a direct current or alternating current into an alternating current or direct current is provided with a current detecting means 5 which detects the AC-side current of the converter 1, voltage detecting means 9 which detects a pulsative voltage on the AC side of the converter 1, power detecting means 10 which detects the electric power flowing through the converter 1 from the current and voltage detected by the detecting means 5 and 9, and means which corrects commands to the converters 1 and 2 so that the same electric power as the detected electric power flowing through the converter 1 can flow through the converter 2.
Inventors:
Motoo Futami
Yuzuru Kubota
Miyazaki Seiko
Yasuhiro Kiyofuji
Motobu Mitsuyuki
Yuzuru Kubota
Miyazaki Seiko
Yasuhiro Kiyofuji
Motobu Mitsuyuki
Application Number:
JP14828495A
Publication Date:
September 09, 2002
Filing Date:
May 23, 1995
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H02M7/72; (IPC1-7): H02M7/72
Domestic Patent References:
| JP2261058A | ||||
| JP48168A | ||||
| JP5211779A |
Attorney, Agent or Firm:
Shigeru Sasaoka (1 person outside)
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