Device for connecting a VSC converter to a source of alternating voltage
First Claim
1. A device for connecting a voltage source converter to a source of alternating voltage having multiple phases through a plurality of inductances, said VSC converter providing a direct current voltage to a capacitor for a power transmission plant comprising:
- a first breaking means connected to said source of alternating voltage multiple phases for individually interrupting each of said multiple phases;
an additional circuit breaking means connecting said first breaking means in series with one of said phases and said voltage source converter;
a resistor connected across said first breaking means for supplying current from said one of said phases to said additional circuit breaking means when said first breaking means is in an open condition; and
circuit means connected to said first breaking means and said additional circuit means, said circuit means changing said additional circuit breaking means from an interrupting condition to a closed condition, and subsequently changing said first breaking means from an interrupting condition to a closed condition.
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Accused Products
Abstract
A first MOS transistor of a specific conductive type and a second MOS transistor of the specific conductive type are combined in an electrostatic circuit protection. In the first MOS transistor, a drain thereof is connected to an output terminal or an input terminal and a source thereof is connected to a first power terminal. The first MOS transistor is turned on/off by a signal received by a gate or ordinarily turned off by holding the gate at a specific potential. In the second MOS transistor of the specific conductive type, a drain thereof is connected to the output terminal or the input terminal and a source thereof is connected to a gate of the first MOS transistor. The second MOS transistor is ordinarily turned off by connecting a gate thereof to the first power terminal.
24 Citations
21 Claims
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1. A device for connecting a voltage source converter to a source of alternating voltage having multiple phases through a plurality of inductances, said VSC converter providing a direct current voltage to a capacitor for a power transmission plant comprising:
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a first breaking means connected to said source of alternating voltage multiple phases for individually interrupting each of said multiple phases; an additional circuit breaking means connecting said first breaking means in series with one of said phases and said voltage source converter; a resistor connected across said first breaking means for supplying current from said one of said phases to said additional circuit breaking means when said first breaking means is in an open condition; and circuit means connected to said first breaking means and said additional circuit means, said circuit means changing said additional circuit breaking means from an interrupting condition to a closed condition, and subsequently changing said first breaking means from an interrupting condition to a closed condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A device for connecting a voltage source converter to a source of alternating voltage having multiple phases through a plurality of inductances, said voltage source converter providing a direct current voltage to a capacitor for a power transmission plant comprising:
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a first breaking means connected to said source of alternating voltage multiple phases for supplying multiple switched phases of said voltage source to multiple inputs of said voltage source converter; an additional breaking means connected to one of said phases and to one of said inputs through a resistor; and a circuit means connected to close said additional breaking means and subsequently close said first breaking means whereby said voltage source converter is initially connected to one phase of alternating voltage before connecting the other phases of said source of alternating voltage to said remaining inputs of said voltage converter. - View Dependent Claims (21)
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Specification