[특허]Thermoelectric power generation from power feeder

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특허 상세정보

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Thermoelectric power generation from power feeder

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01L-035/28 H01L-035/30 B64G-001/42 B64D-041/00
출원번호	US-0190347 (2011-07-25)
등록번호	US-9590159 (2017-03-07)
발명자 / 주소	Gao, Lijun Liu, Shengyi Fifield, John M.
출원인 / 주소	THE BOEING COMPANY
대리인 / 주소	Toler Law Group, PC
인용정보	피인용 횟수 : 0 인용 특허 : 8

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Apparatuses, methods, and systems are disclosed to use thermoelectric generating (TEG) devices to generate electricity from heat generated by a power cable. An apparatus includes multiple thermoelectric generating (TEG) devices. Each of the TEG devices has a first surface configured to be positioned in thermal communication with an outer surface of the power cable and a second surface configured to be positioned proximate to an ambient environment around the power cable. The apparatus also includes a set of terminals electrically coupled to the TEG devic...

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1. An apparatus comprising: a first thermoelectric generating (TEG) device, wherein the first TEG device has a first surface configured to be positioned in thermal communication with an outer surface of a power cable and a second surface configured to be positioned proximate to a first ambient environment around a first portion of the power cable;a thermally-conductive jacket, wherein the first TEG device is enclosed within the thermally-conductive jacket, wherein the thermally-conductive jacket facilitates coupling of the first TEG device to the power cable, wherein the thermally-conductive jacket is configured to wrap around the outer surface of the power cable and form a gap between the outer surface of the power cable and an inner surface of the thermally-conductive jacket, wherein the outer surface of the power cable faces the inner surface of the thermally-conductive jacket, and wherein the thermally-conductive jacket is configured to position the first surface of the first TEG device to be in thermal communication with the outer surface of the power cable when the thermally-conductive jacket is wrapped around the outer surface of the power cable;a first set of terminals electrically coupled to the first TEG device, wherein, when a first temperature differential exists between the first surface and the second surface, the first TEG device converts heat into first electricity presented at the first set of terminals;a first power conversion device (PCD) coupled to the first set of terminals, the first PCD configured to provide a portion of the first electricity to a bus at a first voltage;a first maximum power point tracking (MPPT) device electrically coupled to a terminal of the first set of terminals and to a first sensing line electrically coupled to a terminal of the first set of terminals, wherein the first MPPT device is programmed to: measure a first control input signal using the first sensing line; andprovide a control signal based on the first control input signal to the first PCD that causes the first PCD to set a value that determines a voltage of the first electricity;a second TEG device, wherein the second TEG device has a third surface configured to be positioned in thermal communication with the outer surface of the power cable and a fourth surface configured to be positioned proximate to a second ambient environment around a second portion of the power cable, and wherein the first ambient environment is different than the second ambient environment at operating conditions of the apparatus;a second set of terminals electrically coupled to the second TEG device, wherein, when a second temperature differential exists between the third surface and the fourth surface, the second TEG device converts heat into second electricity presented at the second set of terminals;a second PCD coupled to the second set of terminals, the second PCD configured to provide a portion of the second electricity to the bus at the first voltage; anda second MPPT device electrically coupled to a terminal of the second set of terminals and to a second sensing line electrically coupled to a terminal of the second set of terminals, wherein the second MPPT device is programmed to: measure a second control input signal using the second sensing line;select one of a linear current-voltage relationship and a non-linear current-voltage relationship to govern the second TEG device, wherein the selecting is based on a temperature difference between the first temperature differential and the second temperature differential; andprovide a control signal to the second PCD based on the second control input signal and on the selected relationship, wherein the control signal causes the second PCD to set a value that determines a voltage of the second electricity based on the selected relationship. 2. The apparatus of claim 1, wherein the first surface of the first TEG device is shaped to substantially conform to the outer surface of the power cable while maintaining the gap between the outer surface of the power cable and the inner surface of the thermally-conductive jacket. 3. The apparatus of claim 1, further comprising a fastener that secures the thermally-conductive jacket to the outer surface of the power cable. 4. The apparatus of claim 1, further comprising a second thermally-conductive jacket enclosing the second TEG device, wherein the second thermally-conductive jacket facilitates coupling of the second TEG device to the power cable, and wherein the second thermally-conductive jacket is configured to wrap around the outer surface of the power cable. 5. The apparatus of claim 1, further comprising one or more heat sink projections that extend away from the power cable. 6. The apparatus of claim 1, wherein each of the TEG devices includes at least one positive-type doped-to-negative-type doped (P-N) thermoelectric pellet pair. 7. An aircraft system comprising: an airframe that includes one or more structures and two or more zones, wherein the two or more zones include a first zone having a first ambient environment and a second zone having a second ambient environment, wherein the first zone and the second zone are divided by at least one of the one or more structures, and wherein the first ambient environment is different than the second ambient environment;a power feeder cable configured to convey electrical power generated by an electrical power generating system through the two or more zones including the first zone and the second zone, wherein the power feeder cable is exposed to at least the first ambient environment and the second ambient environment; andwherein the first zone includes: a first thermoelectric generating (TEG) device positioned along an outer surface of the power feeder cable in the first zone, wherein the first TEG device is configured to generate electrical power based on a first temperature differential between the power feeder cable and a first ambient temperature of the first ambient environment in the first zone;a thermally-conductive jacket, wherein the first TEG device is enclosed within the thermally-conductive jacket, wherein the thermally-conductive jacket facilitates coupling of the first TEG to the power feeder cable, wherein the thermally-conductive jacket is deformable to substantially conform to the outer surface of the power feeder cable by wrapping around the outer surface of the power feeder cable, wherein the thermally-conductive jacket is configured to position a first surface of the first TEG device to be in thermal communication with the outer surface of the power feeder cable when the thermally-conductive jacket is wrapped around the outer surface of the power feeder cable;a first maximum power point tracking (MPPT) device that controls a first operating voltage of the first TEG device to be near or at a first maximum power point voltage of the first TEG device at the first temperature differential; anda first power conversion device that converts the first operating voltage to a third voltage of a bus that extends through at least the first zone and the second zone; andwherein the second zone includes: a second TEG device positioned along the surface of the power feeder cable in the second zone, wherein the second TEG device is configured to generate electrical power based on a second temperature differential between the power feeder cable and a second ambient temperature of the second ambient environment in the second zone, and wherein the first ambient temperature is different than the second ambient temperature at operating conditions of the aircraft system;a second MPPT device electrically coupled to a sensing line that is electrically coupled to the bus, wherein the second MPPT device is programmed to: select one of a linear current-voltage relationship and a non-linear current-voltage relationship to govern the second TEG device based on the relationship, wherein the selecting is based on a temperature difference between the first ambient temperature and the second ambient temperature; andcontrol a second operating voltage of the second TEG device to be near or at a second maximum power point voltage of the second TEG device at the second temperature differential based on the selected relationship; anda second power conversion device that converts the second operating voltage to the third voltage of the bus. 8. The aircraft system of claim 7, wherein the first maximum power point tracking device is coupled to a single terminal of a first set of terminals. 9. The aircraft system of claim 7, wherein the thermally-conductive jacket is in thermal communication with a first surface of the first TEG device. 10. The aircraft system of claim 9, wherein the thermally-conductive jacket is in thermal communication with a second surface of the first TEG device. 11. The aircraft system of claim 10, wherein an outer jacket surface of the thermally-conductive jacket is in thermal communication with the second surface of the first TEG device. 12. The aircraft system of claim 11, wherein the outer jacket surface is in thermal communication with a plurality of heat sink projections. 13. The aircraft system of claim 7, wherein a first surface is configured to be a hot side for the first TEG device, and wherein a second surface is configured to be a cold side for the first TEG device. 14. The apparatus of claim 1, wherein the thermally-conductive jacket is in thermal communication with the first surface of the first TEG device. 15. The apparatus of claim 14, wherein the thermally-conductive jacket is in thermal communication with the second surface of the first TEG device. 16. The apparatus of claim 1, wherein an outer jacket surface of the thermally-conductive jacket is in thermal communication with the second surface of the first TEG device. 17. The apparatus of claim 16, wherein the outer jacket surface is in thermal communication with a plurality of heat sink projections. 18. The apparatus of claim 1, wherein the first surface of the first TEG device is curved and configured to substantially conform to the outer surface of the power cable while maintaining the gap between the outer surface of the power cable and the inner surface of the thermally-conductive jacket. 19. The apparatus of claim 1, wherein the second MPPT device is further programmed to provide the control signal to the second PCD based on a measured change in the first temperature differential or in the second temperature differential, andwherein providing the control signal includes iteratively adjusting the control signal to determine the voltage of the second electricity at a maximum of the current-voltage relationship governing the second TEG device at the second temperature differential.

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Thermoelectric power generation from power feeder

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Thermoelectric power generation from power feeder

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