Multi-pulse HVDC system using auxiliary circuit

Details Multi-pulse HVDC system using auxiliary circuit Multi-pulse HVDC system using auxiliary circuit

2006-06-13

2006-06-13

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

C361S186000

Reexamination Certificate

active

07061743

ABSTRACT:
The present invention relates to a multi-pulse HVDC system which is capable of minimizing the number of thyristors by providing a thyristor auxiliary circuit in a conventional 12-pulse thyristor HVDC(High Voltage Direct Current), not using an additional stack of a thyristor and which is implemented based on an auxiliary circuit having a multi-pulse thyristor HVDC system like 24-pulse/36-pulse/48-pulse converters. The multi-pulse HVDC system is characterized in that an upper side thyristor converter12and a lower side thyristor converter13are installed in a Δ-Δ-Y transformer11, and two current smoothing reactor39and a direct voltage dividing condenser38are installed between the upper side thyristor converter12and the lower side thyristor converter13, and two thyristors32, 33: T2and T1are connected to one double winding transformer31.

REFERENCES:
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patent: 4758939 (1988-07-01), Matsuo et al.
patent: 5751563 (1998-05-01), Bjorklund
patent: 6728120 (2004-04-01), Greif et al.
patent: 55002312 (1980-01-01), None

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