[특허]Method and application for vehicle power system isolation

The Boeing Company

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Method and application for vehicle power system isolation

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01F-003/00
미국특허분류(USC)	307/009.1;
출원번호	US-0892871 (2010-09-28)
등록번호	US-8836160 (2014-09-16)
발명자 / 주소	Paterson, John T. Lee, Donald B. Thomas, Terrance L. Berman, Richard W. Liang, George
출원인 / 주소	The Boeing Company
대리인 / 주소	Fields, Kevin G.
인용정보	피인용 횟수 : 6 인용 특허 : 11

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Presented is a system and method for providing electrical isolation in vehicle power systems. The method comprises placing linear optimized isolation transformers in structures of a vehicle at positions that minimize the propagation of energy spikes into internal electronic systems, for example in the wing root of an aircraft where electrical cables from a generator associated with an engine enter the fuselage. The system includes a linear optimized isolation transformer with a core that has primary side winding isolated from a secondary side winding by an isolation dielectric. The isolation dielectric maintains a high value isolation independent of pressure differences due to operation at different altitudes. In embodiments, linear optimized isolation transformers for each phase of a power distribution system couple power from a generator through a structure of a vehicle thereby increasing electrical isolation of electrical components inside the structure from electrical surges originating outside the structure.

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1. A method for power system isolation in a vehicle, the method comprising: providing a linear transformer of a type having a figure-eight shaped core with a center core member, and wires of a primary side wound around one portion of said center core member, and wires of a secondary side wound around a second portion of said center core member, said linear transformer including an isolation dielectric having an H shape that fills all of the space between the primary side and the secondary side that is not occupied by the figure-eight shaped core;placing said linear transformer in line with at least one electrical cable between an output of a generator and one or more components and systems receiving power from said generator inside a cage that functions as a Faraday Cage to protect said one or more components and systems; andpositioning said linear transformer relative to said cage such that primary side terminals of said linear transformer reside outside said cage and secondary side terminals of said linear transformer reside inside said cage, thereby providing power isolation for said one or more components and systems inside said Faraday Cage from said electrical cable. 2. The method of claim 1, further comprising: equipping said linear transformer with means for providing a return path for energy spikes that reduces coupling of the energy spike into said power distribution system. 3. The method of claim 2, wherein said means for providing a return path for energy spikes is selected from the group consisting of a transorb, a gas tube, Zener diode, and a back-to-back Schottky Barrier diode. 4. The method of claim 1, wherein said isolation dielectric placed between said wires of said primary side and said wires of said secondary side includes a set of laminated members. 5. The method of claim 4, wherein said isolation dielectric comprises a high-Q material selected to maintain a high value isolation independent of pressure differences resulting from operation of the vehicle at different altitudes. 6. The method of claim 4, wherein said isolation dielectric has an outer diameter greater than a diameter of said magnetic core, said wires of said primary side wound around said center portion of said center core, and said wires of said secondary side wound around said center portion of said center core. 7. The method of claim 4, wherein said primary side terminal and said secondary side terminal are positioned on opposing ends of a long axis of said magnetic core. 8. The method of claim 4, further comprising said primary side wires and said secondary side wires forming a space between them, and wherein said isolation dielectric has a shape that fills all of said space that is not occupied by said figure-eight shaped magnetic core. 9. The method of claim 1, wherein said cage is selected from the group consisting of a fuselage, a wing root where electrical cables from a generator enter a fuselage, an aft bulkhead in proximity to an auxiliary power unit (APU), and an electronics bay. 10. The method of claim 1, wherein said generator is selected from the group consisting of an auxiliary power unit (APU), and a generator associated with a jet turbine engine. 11. The method of claim 1, wherein said cage is an avionics bay of said vehicle. 12. A vehicle, comprising: a multi-phase power distribution system that electrically couples a generator to at least one electrical component;a cage that functions as a Faraday Cage into which electrical power from said generator passes, said cage housing said at least one electrical component; anda plurality of linear transformers of a type having a figure-eight shaped core with a center core member, and wires of a primary side wound around one portion of said center core member and having primary side terminals, and wires of a secondary side wound around a second portion of said center core member, each of said linear transformers including an isolation dielectric having an H shape that fills all of the space between the primary side and the secondary side that is not occupied by the figure-eight shaped core, and having secondary side terminals, each of said plurality of linear transformers associated with a different phase of said multi-phase power distribution system and positioned relative to said cage such that said primary side terminals of said linear transformer reside outside said cage and said secondary side terminals of said linear transformer reside inside said cage, thereby providing power isolation for said at least one electrical component inside said cage. 13. The vehicle of claim 12, wherein said cage is selected from the group consisting of a fuselage, a wing root, an aft bulkhead in proximity to an auxiliary power unit (APU), and an electronics bay. 14. The vehicle of claim 12, wherein each of said plurality of linear transformers further comprises: a figure-eight shaped magnetic core having a primary side and a secondary side;said isolation dielectric comprising a set of laminated members placed between said primary side and said secondary side, said set of laminated members comprising a high-Q material selected to maintain a high value isolation independent of pressure differences resulting from operation at different pressures; andwherein said primary side terminals and said secondary side terminals are positioned on opposing ends of a long axis of said magnetic core. 15. The vehicle of claim 12, further comprising: surge reduction means associated with each of said plurality of linear transformers that provides a return path for said electrical surges away from said power distribution system.

이 특허에 인용된 특허 (11)

이 특허를 인용한 특허 피인용횟수: 6

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Method and application for vehicle power system isolation

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Method and application for vehicle power system isolation

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이 특허에 인용된 특허 (11)

이 특허를 인용한 특허 피인용횟수: 6

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