Title:
VOLTAGE VARIATION SUPPRESSING DEVICE
Document Type and Number:
Japanese Patent JP2725538
Kind Code:
B2
Abstract:
PURPOSE: To obtain an inexpensive and highly efficient voltage variation suppressing device by reducing the volume thereof relative to the magnitude of variations of a load.
CONSTITUTION: A time average of positive components of a reactive current as compensation current is obtained by a low frequency filter 14, and the average is subtracted from a reactive current reference of an inverter by a substracted 15, whereby the reactive current reference when a load varies acts as a current reference for the positive component and the negative component. However, the positive component is decreased as time elapses, and merely the negative component acts as the current reference, whereby a large compensation capacity of the inverter can be ensured when a load varies.
Inventors:
MURAKAMI SHOTARO
Application Number:
JP23830792A
Publication Date:
March 11, 1998
Filing Date:
September 07, 1992
Export Citation:
Assignee:
MITSUBISHI DENKI KK
International Classes:
G05F1/70; H02J3/16; (IPC1-7): H02J3/16; G05F1/70
Domestic Patent References:
| JP496626A | ||||
| JP63181620A | ||||
| JP6434839U |
Attorney, Agent or Firm:
Kaneo Miyata (3 outside)