Device for supplying electrical power to an aircraft and for electrically starting a jet engine on board an aircraft
View Patent ↗This invention relates to a device for supplying electrical power to an aircraft and for electrically starting a jet engine on board an aircraft, including a multi-phased starter-generator, a multi-phased transformer-rectifier unit, a multi-phased DC-AC converter, a multi-phased rectifier unit, and at least one three-phase inverter, wherein the number of phases is equal to or greater than 5.
1. A device for supplying electrical power to an aircraft and for electrically starting a jet engine on board an aircraft, including a multi-phased starter-generator, a multi-phased transformer-rectifier unit, a multi-phased DC-AC converter, a multi-phased rectifier unit, and at least one three-phase inverter, wherein the number of phases of the multi-phased starter-generator, the multi-phased transformer-rectifier, the multi-phased DC-AC converter, and the multi-phased rectifier is equal to or greater than 5,
wherein the DC-AC converter is a five-phase power-reversible inverter that can operate as a voltage inverter and rectifier.
2. A device according to claim 1 , wherein the starter generator generates a frequency between 800 Hz and 2 KHz.
3. A device according to claim 1 , wherein the starter-generator includes a five-phase stator that comprises five phases dephased by 72° for two consecutive phases.
4. A device according to claim 1 , including split power lines.
5. A device according to claim 3 , wherein the power lines do not comprise a neutral cable.
6. A device according to claim 1 , wherein the multi-phased rectifier unit includes ten diodes.
7. A device according to claim 1 , wherein the transformer-rectifier unit includes primary and secondary five-phase windings and ten diodes mounted on a full-wave rectifier.
8. A device according to claim 6 , wherein the transformer-rectifier unit includes an output filter.
9. A device according to claim 1 , wherein each three-phase inverter is a power inverter and filtering module.
10. A device according to claim 1 , wherein the aircraft is an airplane.
11. An aircraft comprising a device of claim 10 .
12. A device for supplying electrical power to an aircraft and for electrically starting a jet engine on board an aircraft, said device comprising:
a multiphase AC distribution bar,
an AC distribution bus,
a first DC distribution bar,
a second DC distribution bar connected to the first DC distribution bar through a transfer contactor,
a DC distribution bus,
a multiphase starter-generator whose outputs are connected to the multiphase AC distribution bar through a contactor,
a multiphase rectifier unit whose inputs are connected to the multiphase AC distribution bar and whose outputs are connected to the second DC distribution bar,
a multiphase power-reversible converter connected on one side to the first DC distribution bar and on the other side to a compressor engine through a contactor,
a three-phase inverter connected on one side to the first DC distribution bar and on the other side to the AC distribution bus through a contactor,
wherein the number of phases of the multiphase starter-generator, the multiphase rectifier unit the multiphase transformer-rectifier unit, and the multiphase power-reversible converter, is equal to or greater than 5.
13. A device according to claim 12 , further comprising a second multiphase converter connected on one side to the second DC distribution bars and eventually on the other side to a ground power unit through a contactor.
14. A device according to claim 12 , wherein the multiphase starter-generator generates a frequency between 800 Hz and 2 KHz.
15. A device according to claim 12 , wherein the multiphase starter-generator includes a five-phase stator that comprises five phases dephased by 72° for two consecutive phases.