Universal energy supply system

• US 7,683,505 B2
• Filed: 10/22/2008
• Issued: 03/23/2010
• Est. Priority Date: 09/19/2001
• Status: Active Grant

• Current Assignee: Onesubsea IP UK Limited (Schlumberger NV)
• Original Assignee: Cameron International Corporation (Schlumberger NV)
• Inventors: Biester, Klaus, Kunow, Peter
• Primary Examiner(s): Paladini; Albert W
• Assistant Examiner(s): AMAYA, CARLOS DAVID
• Application Number:
  US12/255,898
• Publication Number:
  US 20090040799A1
• Time in Patent Office: 517 Days
• Field of Search: 307/43, 307/151
• US Class Current: 307/151
• CPC Class Codes: H02M 3/1584 with a plurality of power processing stages connected in parallel

Abstract

A universal energy supply system for at least one electrical consumer comprises at least one AC voltage source and a cable connection connecting the source with the electrical consumer, wherein an AC/DC converting means is assigned to the AC voltage source for converting the AC voltage into DC voltage which DC voltage can be supplied to the electrical consumer via the cable connection. To improve such a universal energy supply system in that with small constructional efforts and with low costs, the energy supply to an electrical consumer is guaranteed also over great distances and the corresponding voltage supply is stabilized, the efficiency being relatively high at the same time and the system being redundant, the AC/DC conversion means comprises a number of AC/DC converting units which are connected in parallel with the AC voltage source on the input side and are serially connected to the electric consumer on the output side, each converting unit being constructed as a blocked switch mode power supply.

Claims

1. A universal energy supply system for at least one electrical consumer, comprising:

at least one AC voltage source;

an AC/DC converter coupled between the AC voltage source and a cable connection to the at least one electrical consumer, wherein the AC/DC converter is operable to convert an AC voltage into DC voltage, which DC voltage is supplied to the electrical consumer via the cable connection and wherein the AC/DC converter comprises;

a number of AC/DC converting units which are connected in parallel, on an input side, with the AC voltage source and which are serially connected to the electrical consumer on an output side, wherein each AC/DC converting unit has a primary and secondary winding and has a switch that, when closed, enables energy from the AC source to be stored in the primary winding and that, when open, enables energy stored in the primary winding to be transmitted to the secondary winding; and

a controller in communication with the AC/DC converting units, wherein the controller independently controls an output voltage of each AC/DC converting unit and monitors functionality of each AC/DC converting unit;

wherein at least a few of the AC/DC converting units have phase-shifted clock frequencies relative to one another.

2. A universal energy supply system according to claim 1 wherein the controller is assigned to control the AC voltage source, the AC/DC converting units, and a data signal coupler/decoupler.

3. A universal energy supply system according to claim 2 further comprising a filter arranged between the AC/DC converter and the at least one electrical consumer.

4. A universal energy supply system according to claim 3 wherein the data signal coupler/decoupler is coupled to the cable connection between the filter and the at least one electrical consumer.

5. A universal energy supply system according to claim 4 wherein the controller allows communication between the AC voltage source, the AC/DC converting units, the data coupler/decoupler, and the filter.

6. A universal energy supply system according to claim 1 wherein the cable connection comprises at least one coaxial cable.

7. A system for supplying power to an electrical device, the system comprising:

an AC source;

a plurality of AC/DC converters, wherein inputs of the AC/DC converters are connected to the AC source and wherein outputs of the AC/DC converters are connected to the electrical device via an electrical conductor; and

a data coupling device coupled to the electrical conductor, wherein the data coupling device communicates with the electrical device via signals associated with a first frequency range while power is supplied to the electrical device via the electrical conductor,

wherein clocking frequencies associated with one or more of the AC/DC converters are phase shifted with respect to each other to shift clocking noise from the first frequency range to a second frequency range;

wherein a controller coupled to the data coupling device transmits data with the first frequency range to the electrical device via the electrical conductor to control the electrical device.

8. The system of claim 7 wherein the data received from the electrical device is used to monitor the electrical device.

9. The system of claim 7 wherein the electrical device is an actuator.

10. The system of claim 7 wherein the electrical conductor is a coaxial cable.

11. The system of claim 7 wherein the electrical conductor is at least one kilometer in length.

12. The system of claim 11 wherein the electrical device is part of a fluid line.

13. A system for supplying power from a first location to a difficult to reach second location, the system comprising:

an AC voltage source for disposal at the first location;

an actuating device at the second location;

a plurality of AC/DC converters for disposal at the first location, each having an input side connected to the AC source and an output side connected to an electrical conductor extending to the actuating device at the second location; and

a controller in communication with the AC voltage source, the plurality of AC/DC converters, and the actuating device,

wherein the controller is able to detect defects in the AC/DC converters and the actuating device.

14. The system of claim 13 further including a data coupling device coupled to the electrical conductor to communicate with the actuating device via signals associated with a first frequency range.

15. The system of claim 14 wherein clocking frequencies associated with one or more of the AC/DC converters are phase shifted with respect to each other to shift clocking noise from the first frequency range to a second frequency range.

16. The system of claim 13 wherein the AC/DC converters are in a spaced relationship with each other such that heat from the AC/DC converters is dissipated without the need of a cooling component.

17. A system for supplying power from a first location to a remote location, the system comprising:

an AC voltage source;

a remote electrical device;

a plurality of AC/DC converters wherein the inputs of the AC/DC converters are connected in parallel to the AC source and wherein outputs of the AC/DC converters are connected serially to the remote electrical device via a conductor,

each AC/DC converter comprising a clocked switch mode power supply; and

a controller in communication with the AC voltage source, the plurality of AC/DC converters, and the remote electrical device,

wherein, as needed, the controller causes functional AC/DC converters to compensate for at least one failed converter and wherein the controller selectively transmits a repair request regarding the AC/DC converters.