Title:
INVERTOR
Document Type and Number:
Japanese Patent JPS5583469
Kind Code:
A
Abstract:
PURPOSE:To prevent a thyristor circuit from invading of a surge by damping surge voltage, noise etc. before they flow into an invertor low voltage circuit from a high voltage circuit. CONSTITUTION:A self-excited invertor 1 is connected to a load through a breaker 6 via a resistance/capacity circuit having an high voltage given by a transformer 2 equipped with a fault contact preventive board, the resistance/capacity circuit being composed of a resistor 3 inserted in parallel into the transformer 2 and a capacitor 4, and a reactor 5 connected in series behind the circuit. The surge voltage and noise produced by the closing and opening of the breaker 6 provided on the load side are damped because their high frequency components are removed by the reactor 5, resistor 3 and capacitor 4. Further, by reducing the transformer 2 to the one of fault contact preventive board earthing type, a phenomenon in which the surge is transferred via the floating capacity between the primary and secondary circuits of the transformer is eliminated.
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Inventors:
HOSHI TOSHIHIKO
MIZUTANI TADAO
HOSAKA KAZUYOSHI
MIZUTANI TADAO
HOSAKA KAZUYOSHI
Application Number:
JP15477178A
Publication Date:
June 23, 1980
Filing Date:
December 15, 1978
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD
International Classes:
H02M7/48; H02M7/515; (IPC1-7): H02M7/48; H02M7/515; H02P13/16