POWER GENERATION SYSTEM, POWER CONVERTER SYSTEM, AND METHODS OF OPERATING A POWER CONVERTER SYSTEM

• US 20140056041A1
• Filed: 05/18/2011
• Published: 02/27/2014
• Est. Priority Date: 05/18/2011
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Zhu, Huibin, Smith, David, Gong, Maozhong, Zhu, Jun, Ritter, Allen, Wagoner, Robert Gregory, Galbraith, Anthony, Wu, Xueqin, Zhang, Qiwei
• Application Number:
  US14/113,946
• Publication Number:
  US 20140056041A1
• Time in Patent Office: Days
• US Class Current: 363/56.01
• CPC Class Codes: H02H 7/1203 Circuits independent of the type of conversion
• CPC Class Codes: H02M 1/0003 Details of control, feedback or regulation circuits
• CPC Class Codes: H02M 1/007 Plural converter units in cascade push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826
• CPC Class Codes: H02M 3/1584 with a plurality of power processing stages connected in parallel
• CPC Class Codes: H02M 7/53871 with automatic control of output voltage or current

Abstract

A power converter system includes a converter configured to be coupled to a power generation unit for receiving power from the power generation unit, and a bus coupled to the converter, wherein a voltage is generated across the bus when electricity is conducted through the power converter system. The power converter system also includes an inverter coupled to the bus, wherein the inverter is configured to supply power to an electrical distribution network. A control system is coupled to at least one of the converter and the inverter, wherein the control system is configured to adjust an operation of the at least one of the converter and the inverter to reduce the voltage across the bus during at least one of a low voltage event and a high voltage event.

Claims

1. A power converter system comprising:

a converter configured to be coupled to a power generation unit for receiving power from the power generation unit;

a bus coupled to the converter, wherein a voltage is generated across the bus when electricity is conducted through the power converter system;

an inverter coupled to the bus and configured to supply power to an electrical distribution network; and

,

a control system coupled to at least one of the converter and the inverter, the control system configured to adjust an operation of the at least one of the converter and the inverter to reduce the voltage across the bus during at least one of a low voltage event and a high voltage event.

2. The power converter system in accordance with claim 1, wherein the control system is configured to operate the converter to reduce the power received from the power generation unit during the at least one of a low voltage event and a high voltage event.

3. The power converter system in accordance with claim 1, wherein the inverter comprises at least one switch, the control system is configured to disable the at least one switch during the at least one of a low voltage event and a high voltage event.

4. The power converter system in accordance with claim 1, wherein the control system is configured to enable a current to be transmitted from the bus to the power generation unit during the at least one of a low voltage event and a high voltage event.

5. The power converter system in accordance with claim 1, wherein the converter comprises at least one switch, the control system is configured to control the switching of the at least one switch to limit a voltage change across the bus during the at least one of a low voltage event and a high voltage event.

6. The power converter system in accordance with claim 1, wherein the control system comprises an inverter controller configured to use a feedforward voltage signal to reduce a difference between the power received from the power generation unit and the power supplied to the electrical distribution network.

7. The power converter system in accordance with claim 1, wherein the control system comprises a converter controller coupled to the converter, the converter controller configured to control an operation of the converter to limit an amount of change in the voltage across the bus.

8. A power generation system, comprising:

a power generation unit configured to generate power; and

,

a power converter system coupled to the power generation unit and to an electrical distribution network, the power converter system comprising;

a converter configured to receive power from the power generation unit;

a bus coupled to the converter, wherein a voltage is generated across the bus when electricity is conducted through the power converter system;

an inverter coupled to the bus and configured to supply power to the electrical distribution network; and

,

a control system coupled to at least one of the converter and the inverter, the control system configured to adjust an operation of the at least one of the converter and the inverter to reduce the voltage across the bus during at least one of a low voltage event and a high voltage event.

9. The power generation system in accordance with claim 8, wherein the control system is configured to operate the converter to reduce the power received from the power generation unit during the at least one of a low voltage event and a high voltage event.

10. The power generation system in accordance with claim 8, wherein the inverter comprises at least one switch, the control system is configured to disable the at least one switch during the at least one of a low voltage event and a high voltage event.

11. The power generation system in accordance with claim 8, wherein the control system is configured to enable a current to be transmitted from the bus to the power generation unit during the at least one of a low voltage event and a high voltage event.

12. The power generation system in accordance with claim 8, wherein the converter comprises at least one switch, the control system is configured to control the switching of the at least one switch to limit a voltage change across the bus during the at least one of a low voltage event and a high voltage event.

13. The power generation system in accordance with claim 8, wherein the control system comprises an inverter controller configured to use a feedforward voltage signal to reduce a difference between the power received from the power generation unit and the power supplied to the electrical distribution network.

14. The power generation system in accordance with claim 8, wherein the control system comprises a converter controller coupled to the converter, the converter controller configured to control an operation of the converter to limit an amount of change in the voltage across the bus.

15. A method of operating a power converter system, the method comprising:

enabling a switching operation of the power converter system;

electrically coupling a power generation unit to the power converter system; and

,

supplying power from the power generation unit to an electrical distribution network coupled to the power converter system.

16. The method in accordance with claim 15, further comprising adjusting an operation of the power converter system to reduce a voltage within the power converter system during at least one of a low voltage event and a high voltage event.

17. The method in accordance with claim 15, further comprising adjusting an operation of the power converter system to reduce a change in voltage within the power converter system during at least one of a low voltage event and a high voltage event.

18. The method in accordance with claim 15, further comprising precharging the bus using power received from the electrical distribution network before the enabling a switching operation of the power converter system.

19. The method in accordance with claim 15, further comprising:

electrically decoupling the power generation unit from the power converter system; and

,

disabling the switching operation of the power converter system.

20. The method in accordance with claim 15, wherein the power converter system includes at least one of a converter and an inverter, the enabling a switching operation of the power converter system comprising enabling a switching operation of the at least one of the converter and the inverter.