Circuit arrangement with a number of cycloconverters,...

Details Circuit arrangement with a number of cycloconverters,... Circuit arrangement with a number of cycloconverters,...

H - Electricity

02

M

321/8

H02M 5/257 (2006.01) H02M 5/27 (2006.01) H02P 13/30 (1980.01)

Patent

CA 1050106

ABSTRACT OF THE DISCLOSURE A circuit arrangement is disclosed comprising a converter for converting a three-phase system of sinusoidal voltages into three trapezoidal control voltages for controlling control units serving three direct cyoloconverters. More particularly, in accord with the invention, the converter acts on the sinusoidal control voltages such that during each region from .pi./3 to 2.pi./3 of a half-wave of each particular voltage that particular voltage is reduced to a constant value of ?/2 times its peak value, while the other two voltages are amplified by an amount equal to the difference between the instantaneous value of said particular voltage and said constant value.

246928

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