IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0754809
(2010-04-06)
|
등록번호 |
US-8492915
(2013-07-23)
|
발명자
/ 주소 |
- Koeppen, Carsten
- Marquardt, Till
- Thiel, Sebastian
|
출원인 / 주소 |
|
대리인 / 주소 |
Greer, Burns & Crain Ltd.
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
3 |
초록
▼
The present invention relates in to a device for supplying mechanical power to start at least one engine, with a power supply device for supplying electrical power with an alternating voltage and constant frequency; and with a number, N1, of conversion devices for the conversion of the supplied elec
The present invention relates in to a device for supplying mechanical power to start at least one engine, with a power supply device for supplying electrical power with an alternating voltage and constant frequency; and with a number, N1, of conversion devices for the conversion of the supplied electrical power to a respective mechanical power for a respective engine, wherein a respective conversion device has a cascade starter generator for direct conversion of the supplied electrical power to mechanical power, wherein the cascade starter generator has a first stator, a second stator, a first rotor and a second rotor, the first stator being integrally formed with the second stator and the first rotor being integrally formed with the second rotor. The present invention further relates to an aircraft comprising such a power distribution network and a method for supplying mechanical power to start at least one engine in an aircraft.
대표청구항
▼
1. A device for supplying mechanical power to start at least one engine, comprising: a power supply device for supplying electrical power with an alternating voltage and constant frequency; anda number, N1, of conversion devices for the conversion of the supplied electrical power to a respective mec
1. A device for supplying mechanical power to start at least one engine, comprising: a power supply device for supplying electrical power with an alternating voltage and constant frequency; anda number, N1, of conversion devices for the conversion of the supplied electrical power to a respective mechanical power for a respective engine, each conversion device having a cascade starter generator for direct conversion of the supplied electrical power to mechanical power,each cascade starter generator having a first stator, a second stator, a first rotor and a second rotor, the first stator being integrally formed with the second stator and the first rotor being integrally formed with the second rotor,wherein at least one of said conversion devices comprises a frequency converter, and wherein the cascade starter generator converts a first part of the supplied electrical power into a first part of the mechanical power and a second part of the supplied electrical power, which has first been passed through the frequency converter, into a second part of the mechanical power. 2. The device according to claim 1, wherein the first stator and the second stator each comprise mutually separated electrical connections. 3. The device according to claim 1, wherein a shared housing is provided, in which the first and second stators and/or the first and second rotors are arranged. 4. The device according to claim 1, wherein the windings of the first and second stators are interwound in such a way that they form a coherent stator winding assembly, and/or in that the windings of the first and second rotors are interwound in such a way that they form a coherent, integrated rotor winding assembly. 5. A device for supplying mechanical power to start at least one engine, comprising: a power supply device for supplying electrical power with an alternating voltage and constant frequency; anda number, N1, of conversion devices for the conversion of the supplied electrical power to a respective mechanical power for a respective engine, each conversion device having a cascade starter generator for direct conversion of the supplied electrical power to mechanical power,each cascade starter generator having a first stator, a second stator, a first rotor and a second rotor, the first stator being integrally formed with the second stator and the first rotor being integrally formed with the second rotor,wherein the power supply device has a plurality of power supply units for respectively supplying electrical power at constant frequency, with the respective power supply unit being designed as a conversion device for an engine which is already running and/or as one of a number, N2, of fuel cell stacks and/or as one of a number, N3, of connections to connect an external energy source to supply the electrical power at constant frequency. 6. The device according to claim 5, wherein a number, N4, of constant frequency buses for connecting the conversion devices to the power supply units are provided. 7. The device according to claim 6, wherein the number, N4, of constant frequency buses have an initial quantity, M1, of main buses and a second quantity, M2, of emergency buses. 8. The device according to claim 6, wherein a controllable switching device is provided which is designed to switch a respective power supply unit to any one of the number, N4, of constant frequency buses. 9. The device according to claim 7, wherein the controllable switching device switches at least one power supply unit as a function of an established load distribution for a load required to start the at least one engine to any one of the number, N4, of constant frequency buses. 10. The device according to claim 7, wherein a number, N2, of fuel cell stacks are provided, wherein the respective fuel cell stack is connected to the switching device by means of an inverter which is preferably designed as a self-commutated inverter. 11. The device according to claim 10, wherein the respective inverter is designed as an externally commutated inverter. 12. An aircraft with a power distribution network which has a device according to claim 1. 13. A method for supplying mechanical power to start at least one engine in an aircraft by means of a device for supplying mechanical power to start at least one engine, comprising a power supply device for supplying electrical power with an alternating voltage and constant frequency; and a number, N1, of conversion devices for the conversion of the supplied electrical power to a respective mechanical power for a respective engine, each conversion device having a cascade starter generator for direct conversion of the supplied electrical power to mechanical power, each cascade starter generator having a first stator, a second stator, a first rotor and a second rotor, the first stator being integrally formed with the second stator and the first rotor being integrally formed with the second rotor, with the following stages: a) supplying electrical power with an alternating voltage and constant frequency;b) converting the supplied electrical power to a respective mechanical power for a respective engine, wherein an initial part of the supplied electrical power is converted directly to an initial part of the mechanical power by means of a cascade starter generator and a second part of the supplied electrical power is passed through a frequency converter and then converted to a second part of the mechanical power by means of the cascade starter generator.
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