Hybrid high voltage direct current converter systems
First Claim
1. A hybrid high voltage direct current (HVDC) converter system comprising:
- at least one alternating current (AC) conduit;
at least one transformer coupled to said at least one AC conduit;
at least one direct current (DC) conduit;
at least one capacitor commutated converter (CCC) configured to convert AC voltages and AC currents to a DC voltage and DC current, said at least one CCC coupled to said at least one AC conduit through said at least one transformer;
at least one self-commutated converter (SCC) configured to convert AC voltages and AC currents to a regulated DC voltage and DC current, said at least one SCC comprising at least one AC/DC stage and at least one DC/DC stage coupled to said at least one AC/DC stage;
at least one CCC bypass switch coupled in parallel with said at least one CCC;
wherein the at least one AC/DC stage comprises a plurality of switching power poles coupled to plurality of AC terminals and plurality of DC terminals of the at least one AC/DC stage; and
wherein each switching power pole of said plurality of switching power poles comprises a plurality of switching devices coupled in series, wherein said each switching power pole of said plurality of switching power poles defines and is coupled to a coupling terminal, said at least one AC/DC stage further comprises a plurality of branched conduits coupled to said plurality of switching power poles, each branched conduit of said plurality of branched conduits comprising a plurality of capacitive sub-modules, said plurality of branched conduits and said plurality of switching devices define a plurality of floating terminals therebetween, each capacitive sub-module of said plurality of capacitive sub-modules configured to be selectably placed in service between said plurality of floating terminals and said plurality of AC terminals, said at least one SCC coupled to said at least one CCC through said at least one transformer and said at least one AC conduit, and said at least one SCC and said at least one CCC coupled in series to said at least one DC conduit.
1 Assignment
0 Petitions
Accused Products
Abstract
A hybrid HVDC converter system includes at least one alternating current (AC) conduit, at least one transformer coupled to said at least one AC conduit, and at least one direct current (DC) conduit. The hybrid HVDC converter system also includes at least one capacitor commutated converter (CCC) configured to convert AC voltages and AC currents to a DC voltage and DC current. The at least one CCC is coupled to the at least one AC conduit through the at least one transformer. The hybrid HVDC converter system further includes at least one self-commutated converter (SCC) configured to convert AC voltages and AC currents to a regulated DC voltage and DC current. The at least one SCC includes at least one AC/DC stage and at least one DC/DC stage coupled to the at least one AC/DC stage.
34 Citations
29 Claims
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1. A hybrid high voltage direct current (HVDC) converter system comprising:
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at least one alternating current (AC) conduit; at least one transformer coupled to said at least one AC conduit; at least one direct current (DC) conduit; at least one capacitor commutated converter (CCC) configured to convert AC voltages and AC currents to a DC voltage and DC current, said at least one CCC coupled to said at least one AC conduit through said at least one transformer; at least one self-commutated converter (SCC) configured to convert AC voltages and AC currents to a regulated DC voltage and DC current, said at least one SCC comprising at least one AC/DC stage and at least one DC/DC stage coupled to said at least one AC/DC stage; at least one CCC bypass switch coupled in parallel with said at least one CCC; wherein the at least one AC/DC stage comprises a plurality of switching power poles coupled to plurality of AC terminals and plurality of DC terminals of the at least one AC/DC stage; and wherein each switching power pole of said plurality of switching power poles comprises a plurality of switching devices coupled in series, wherein said each switching power pole of said plurality of switching power poles defines and is coupled to a coupling terminal, said at least one AC/DC stage further comprises a plurality of branched conduits coupled to said plurality of switching power poles, each branched conduit of said plurality of branched conduits comprising a plurality of capacitive sub-modules, said plurality of branched conduits and said plurality of switching devices define a plurality of floating terminals therebetween, each capacitive sub-module of said plurality of capacitive sub-modules configured to be selectably placed in service between said plurality of floating terminals and said plurality of AC terminals, said at least one SCC coupled to said at least one CCC through said at least one transformer and said at least one AC conduit, and said at least one SCC and said at least one CCC coupled in series to said at least one DC conduit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A hybrid high voltage direct current (HVDC) converter system comprising:
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at least one alternating current (AC) conduit; at least one transformer coupled to said at least one AC conduit; at least one direct current (DC) conduit; at least one capacitor commutated converter (CCC) configured to convert AC voltages and AC currents to a DC voltage and DC current, said at least one CCC coupled to said at least one AC conduit through said at least one transformer; and at least one self-commutated converter (SCC) configured to convert AC voltages and currents to a regulated DC voltage and DC current, said at least one SCC comprising; at least one AC/DC stage comprising; a plurality of AC terminals; a plurality of DC terminals; a plurality of switching power poles coupled to said plurality of AC terminals and coupled to said plurality of DC terminals; at least one DC/DC stage coupled to said at least one AC/DC stage through said plurality of DC terminals; wherein each switching power pole of said plurality of switching power poles comprises a plurality of switching devices coupled in series, wherein said each switching power pole of said plurality of switching power poles defines and is coupled to a coupling terminal, said at least one AC/DC stage further comprises a plurality of branched conduits coupled to said plurality of switching power poles, each branched conduit of said plurality of branched conduits comprising a plurality of capacitive sub-modules, said plurality of branched conduits and said plurality of switching devices define a plurality of floating terminals therebetween, each capacitive sub-module of said plurality of capacitive sub-modules configured to be selectably placed in service between said plurality of floating terminals and said plurality of AC terminals. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A hybrid high voltage direct current (HVDC) converter system comprising:
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at least one alternating current (AC) conduit; at least one transformer coupled to said at least one AC conduit; at least one direct current (DC) conduit; at least one capacitor commutated converter (CCC) configured to convert AC voltages and AC currents to a DC voltage and DC current, said at least one CCC coupled to said at least one AC conduit through said at least one transformer; at least one self-commutated converter (SCC) configured to convert AC voltages and AC currents to a regulated DC voltage and DC current, said at least one SCC comprising; a plurality of AC terminals; a plurality of DC terminals; a plurality of switching power poles coupled to said plurality of AC terminals and coupled to said plurality of DC terminals; and wherein each switching power pole of said plurality of switching power poles comprises a plurality of switching devices coupled in series, wherein said each switching power pole of said plurality of switching power poles defines and is coupled to a coupling terminal, said at least one AC/DC stage further comprises a plurality of branched conduits coupled to said plurality of switching power poles, each branched conduit of said plurality of branched conduits comprising a plurality of capacitive sub-modules, said plurality of branched conduits and said plurality of switching devices define a plurality of floating terminals therebetween, each capacitive sub-module of said plurality of capacitive sub-modules configured to be selectably placed in service between said plurality of floating terminals and said plurality of AC terminals, said at least one SCC coupled to said at least one CCC through said at least one transformer and said at least one AC conduit, and said at least one SCC and said at least one CCC coupled in series to said at least one DC conduit. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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Specification