Title:
CONTROLLING METHOD OF REACTIVE POWER COMPENSATED CYCLOCONVERTER
Document Type and Number:
Japanese Patent JPS56136180
Kind Code:
A
Abstract:
PURPOSE:To constitute a control system of satisfactory follow-up performance, by seeking a circulating current value to be passed to a cycloconverter by operating a phase control signal and a detected value of load current. CONSTITUTION:Output voltage of a positive-group converter SS-P and output voltage of a negative-group converter SS-N in a condition almost equiligrated by a load terminal. A sine value of ignition control angle is sought by multiplying a constant over an output signal of an amplifier K2 of a load current control circuit by an amplifier Kalpha. A limitter circuit LIM decides the upper limit and lower limit values of the signal of the amplifier Kalpha. An output signal of an absolute value circuit ABS of a load current IL is put into an adder A7, and the output is put into an adder A8 through an amplifier KQ. A circulating current Io passes following a circulating current command value which is an output of the adder A8. If magnitude of the load current IL and ignition angle are changed, the circulating current command value is varied accordingly, and the circulating current is controlled.
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Inventors:
TANAKA SHIGERU
Application Number:
JP3991280A
Publication Date:
October 24, 1981
Filing Date:
March 28, 1980
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
H02M5/27; (IPC1-7): H02M5/27
Previous Patent: JPS56136179
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