Title:
NEUTRAL POINT GROUNDING CIRCUIT IN GENERATOR AND POWDER TRANSMISSION SYSTEM
Document Type and Number:
Japanese Patent JPS5467648
Kind Code:
A
Abstract:
PURPOSE: To restrict specified frequency current by providing a resonance circuit for generating parallel resonance against specified frequency at the secondary winding of a grounding transformer.
CONSTITUTION: When third harmonic wave current tends to flow through the primary winding of a grounding transformer 3, a parallel resonance circuit 15 composed of a reactor 13 and a capacitor 14 is resonated at thired harmonic wave to thus become high impedance. Accordingly, the secondary current of the grounding transformer 3 becomes minimal. That is, the impedance converted in calculation to the primary winding side value of the transformer 3 becomes maximal to thus finally cause no third harmonic wave current to flow.
Inventors:
MORI TAKASHI
Application Number:
JP13492277A
Publication Date:
May 31, 1979
Filing Date:
November 09, 1977
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02H9/08; (IPC1-7): H02H1/02