Apparatus for transferring energy using onboard power electronics and method of manufacturing same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02J-007/14
H02J-007/04
H02J-005/00
H02P-001/00
출원번호
US-0099053
(2011-05-02)
등록번호
US-8487582
(2013-07-16)
발명자
/ 주소
King, Robert Dean
Steigerwald, Robert Louis
출원인 / 주소
General Electric Company
대리인 / 주소
Ziolkowski Patent Solutions Group, SC
인용정보
피인용 횟수 :
10인용 특허 :
12
초록▼
An apparatus comprises a first energy storage device configured to output a DC voltage, a first bi-directional voltage modification assembly coupled to the first energy storage device, and a charge bus coupled to the first energy storage device and to the first bi-directional voltage modification as
An apparatus comprises a first energy storage device configured to output a DC voltage, a first bi-directional voltage modification assembly coupled to the first energy storage device, and a charge bus coupled to the first energy storage device and to the first bi-directional voltage modification assembly. The apparatus also comprises high-impedance voltage source coupleable to the charge bus and a controller configured to monitor a transfer of charging energy supplied from the high-impedance voltage source to the first energy storage device. The controller is also configured to compare the monitored transfer of charging energy with a threshold value and, after the threshold value has been crossed, control the first bi-directional voltage modification assembly to modify one of a voltage and a current of the charging energy supplied to the first energy storage device.
대표청구항▼
1. An apparatus comprising: an energy storage device configured to output a DC voltage;a bi-directional voltage modification assembly coupled to the energy storage device;a charge bus coupled to the energy storage device and to the bi-directional voltage modification assembly, the charge bus couplea
1. An apparatus comprising: an energy storage device configured to output a DC voltage;a bi-directional voltage modification assembly coupled to the energy storage device;a charge bus coupled to the energy storage device and to the bi-directional voltage modification assembly, the charge bus coupleable to a high-impedance voltage source; anda controller configured to: monitor a transfer of charging energy supplied from the high-impedance voltage source to the energy storage device; andmodify one of a voltage and a current of the charging energy supplied to the energy storage device based on the monitored transfer of charging energy. 2. The apparatus of claim 1 wherein the high-impedance voltage source comprises: a plurality of secondary transformer windings;a rectifier bridge coupled to the plurality of secondary transformer windings. 3. The apparatus of claim 1 wherein the controller is configured to compare the monitored transfer of charging energy to a threshold and base the modification of the one of the voltage and the current on the comparison. 4. The apparatus of claim 3 wherein the controller, in being configured to compare the monitored transfer of charging energy with the threshold value, is configured to compare a current of the charge bus with a predetermined current threshold value. 5. The apparatus of claim 1 wherein the energy storage device comprises a high power energy storage device having an instantaneous acceptance capability larger than an instantaneous delivery capability of the high-impedance voltage source; wherein the bi-directional voltage modification assembly comprises a bi-directional DC-AC voltage inverter; andwherein the controller is configured to control the bi-directional voltage modification assembly to modify the one of the voltage and the current, and the bi-directional DC-AC voltage inverter is configured to boost the one of the voltage and the current of the charging energy. 6. The apparatus of claim 5 wherein the controller, in being configured to control the bi-directional voltage modification assembly, is configured to control a plurality of boost converters of the bi-directional DC-AC voltage inverter at a same phase. 7. The apparatus of claim 5 wherein the bi-directional DC-AC voltage inverter comprises a plurality of diodes configured to transfer a current of the charging energy from the high-impedance voltage source to the charge bus before a threshold value has been crossed. 8. The apparatus of claim 1 wherein the energy storage device comprises a low power energy storage device having an instantaneous acceptance capability larger than an instantaneous delivery capability of the high-impedance voltage source; wherein the apparatus comprises a bi-directional DC-DC voltage converter; andwherein the bi-directional DC-DC voltage converter is configured to buck the one of the voltage and the current of the charging energy. 9. The apparatus of claim 8 further comprising a switch having an open position and a closed position; wherein the switch, when positioned in a first position, is configured to couple the low power energy storage device directly to the charge bus;wherein the switch, when positioned in a second position, is configured to de-couple the low power energy storage device directly to the charge bus; andwherein the controller is further configured to cause the switch to change from the first position to the second position after a threshold value has been crossed, wherein the threshold value is based on one of a voltage and a temperature of the low power energy storage device. 10. The apparatus of claim 8 further comprising a bi-directional DC-AC voltage inverter coupled to the bi-directional DC-DC voltage converter and to the charge bus, wherein the bi-directional DC-AC voltage inverter is configured to transfer charging energy from the high-impedance voltage source to the charge bus. 11. The apparatus of claim 10 further comprising: a high power energy storage device having an instantaneous acceptance capability larger than an instantaneous delivery capability of the high-impedance voltage source; andwherein the controller is further configured to boost the voltage of the charging energy via the bi-directional DC-AC voltage inverter. 12. The apparatus of claim 11 wherein the controller is further programmed to simultaneously charge the low power energy storage device and the high power energy storage device. 13. The apparatus of claim 8 wherein the controller is configured to compare the monitored transfer of charging energy with a threshold value, and is configured to compare an energy storage device voltage of the charge bus with a predetermined voltage threshold value. 14. The apparatus of claim 1 wherein the energy storage device comprises a low power energy storage device having an instantaneous acceptance capability smaller than an instantaneous delivery capability of the high-impedance voltage source; wherein the apparatus comprises a bi-directional DC-DC voltage converter;wherein the bi-directional DC-DC voltage converter is configured to buck one of the voltage and the current of the charging energy. 15. The apparatus of claim 1 wherein each of the energy storage device, the bi-directional voltage modification, and the controller is positioned on a vehicle. 16. The apparatus of claim 1 wherein the high-impedance voltage source comprises one of a single-phase high-impedance voltage source, a two-phase high-impedance voltage source, a three-phase high-impedance voltage source, and a six-phase high-impedance voltage source. 17. A method of fabricating an energy transfer system for transferring energy between an energy storage device on-board a vehicle and an external source, the method comprising: coupling the energy storage device to a voltage bus, the energy storage device configured to output a DC voltage;coupling a bi-directional voltage modification assembly to the voltage bus;coupling a high-impedance voltage source to the voltage bus to supply current to the energy storage device; andconfiguring a controller to: monitor a transfer of the current to the energy storage device; andafter a threshold current has been crossed, control the bi-directional voltage modification assembly to modify the current supplied to the energy storage device. 18. The method of claim 17 wherein coupling the bi-directional voltage modification assembly to the voltage bus comprises coupling a bi-directional DC-AC voltage inverter to the voltage bus; and wherein configuring the controller to control the bi-directional voltage modification assembly comprises configuring the controller to boost a voltage output of the bi-directional DC-AC voltage inverter. 19. The method of claim 17 wherein coupling the bi-directional voltage modification assembly to the voltage bus comprises coupling a bi-directional DC-DC voltage converter to the voltage bus; and wherein configuring the controller to control the bi-directional voltage modification assembly comprises configuring the controller to buck a voltage of the charging energy via the bi-directional DC- DC voltage converter. 20. A system comprising: a charge bus configured to receive charging energy from a high-impedance voltage source;an energy storage device configured to output a DC voltage and coupled to the charge bus;a bi-directional voltage modification assembly coupled to the charge bus; anda controller configured to: transfer charging energy from the high-impedance voltage source to the energy storage device via a first electrical configuration of the bi-directional voltage modification assembly; andafter a threshold rate of charging energy has been crossed, alter the bi-directional voltage modification assembly to a second electrical configuration to modify the rate of charging energy supplied from the high-impedance voltage source to the energy storage device. 21. The system of claim 20 wherein the voltage source comprises a high-impedance voltage source. 22. The system of claim 20 wherein the bi-directional voltage modification assembly comprises a bi-directional DC-AC voltage inverter; and wherein the controller, in being configured to control the bi-directional voltage modification assembly, is configured to boost a voltage of the charging energy via the bi-directional DC-AC voltage inverter. 23. The system of claim 20 wherein the bi-directional voltage modification assembly comprises a bi-directional DC-DC voltage converter; and wherein the controller, in being configured to control the bi-directional voltage modification assembly, is configured to buck a voltage of the charging energy via the bi-directional DC-DC voltage converter. 24. The system of claim 20 further comprising an electrical apparatus configured to house the charge bus, the energy storage device, the bi-directional voltage modification assembly, and the controller, wherein the electrical apparatus comprises one of a vehicle, a crane, an elevator, and a lift.
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