POWER SYSTEM FOR OFFSHORE APPLICATIONS
First Claim
1. A power system for offshore application, comprising:
- a plurality of power circuits, each comprising;
an alternating current (AC) bus connected to a generator and supplying power to an auxiliary load;
a first direct current (DC) bus having a first DC voltage supplying power to a first load;
a second DC bus having a second DC voltage supplying power to a second load;
a first DC to DC converter coupled between the first DC bus and the second DC bus, wherein the first DC to DC converter is configured for bidirectional power flow;
an AC to DC converter coupled between the AC bus and the first DC bus;
wherein the first DC bus of at least one power circuit is coupled to the second DC bus of at least another power circuit with a second DC to DC converter; and
a controller configured to control the operation of the first DC to DC converter, second DC to DC converter and the AC to DC converter for regulating the first and second DC voltages;
wherein the controller is further configured to provide power to the second DC bus from the at least one AC to DC converter during a first operating state and from the first DC to DC converter during a second operating state.
2 Assignments
0 Petitions
Accused Products
Abstract
A power system for offshore application includes a plurality of power circuits. Each of the power circuit includes an alternating current (AC) bus which supplies power to an auxiliary load and is connected to a generator. The power circuit further includes a first direct current (DC) bus having a first DC voltage supplying power to a first load and a second DC bus having a second DC voltage supplying power to a second load. The power circuit also includes a first DC to DC converter coupled between the first DC bus and the second DC bus, wherein the first DC to DC converter is configured for bidirectional power flow and an AC to DC converter coupled between the AC bus and the first DC bus. The first DC bus of at least one power circuit is coupled to the second DC bus of at least another power circuit with a second DC to DC converter. The system also includes a controller configured to control the operation of the first DC to DC converter, second DC to DC converter and the AC to DC converter for regulating the first and second DC voltages. The controller is further configured to provide power to the second DC bus from the at least one AC to DC converter during a first operating state and from the first DC to DC converter during a second operating state.
42 Citations
23 Claims
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1. A power system for offshore application, comprising:
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a plurality of power circuits, each comprising; an alternating current (AC) bus connected to a generator and supplying power to an auxiliary load; a first direct current (DC) bus having a first DC voltage supplying power to a first load; a second DC bus having a second DC voltage supplying power to a second load; a first DC to DC converter coupled between the first DC bus and the second DC bus, wherein the first DC to DC converter is configured for bidirectional power flow; an AC to DC converter coupled between the AC bus and the first DC bus; wherein the first DC bus of at least one power circuit is coupled to the second DC bus of at least another power circuit with a second DC to DC converter; and a controller configured to control the operation of the first DC to DC converter, second DC to DC converter and the AC to DC converter for regulating the first and second DC voltages; wherein the controller is further configured to provide power to the second DC bus from the at least one AC to DC converter during a first operating state and from the first DC to DC converter during a second operating state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of providing power to offshore application comprising:
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providing power to a plurality of power circuits, wherein providing power to each power circuit includes; supplying power to an auxiliary load from an alternating current (AC) bus connected to a generator; supplying power to a first load from a first direct current (DC) bus having a first DC voltage; providing power to a second load from a second DC bus having a second DC voltage; connecting a first DC to DC converter coupled between the first DC bus and the second DC bus, wherein the first DC to DC converter is configured for bidirectional power flow; connecting an AC to DC converter between the AC bus and the first DC bus; coupling the first DC bus of at least one power circuit to the second DC bus of at least another power circuit with a second DC to DC converter; regulating the first and second DC voltages by controlling the operation of the first DC to DC converter, the second DC to DC converter and the AC to DC converter; and providing power to the second DC bus from the at least one AC to DC converter during a first operating state and from the first DC to DC converter during a second operating state. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification