WO2024134088A1 - Circuit d'alimentation electrique d'une turbomachine, turbomachine et aeronef comportant une telle turbomachine - Google Patents
Circuit d'alimentation electrique d'une turbomachine, turbomachine et aeronef comportant une telle turbomachine Download PDFInfo
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- WO2024134088A1 WO2024134088A1 PCT/FR2023/052054 FR2023052054W WO2024134088A1 WO 2024134088 A1 WO2024134088 A1 WO 2024134088A1 FR 2023052054 W FR2023052054 W FR 2023052054W WO 2024134088 A1 WO2024134088 A1 WO 2024134088A1
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- Prior art keywords
- voltage
- turbomachine
- stage
- converter
- propeller
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
- B64D27/02—Aircraft characterised by the type or position of power plants
- B64D27/30—Aircraft characterised by electric power plants
- B64D27/33—Hybrid electric aircraft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
- B64D27/02—Aircraft characterised by the type or position of power plants
- B64D27/30—Aircraft characterised by electric power plants
- B64D27/34—All-electric aircraft
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
- H02M3/1586—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel switched with a phase shift, i.e. interleaved
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33584—Bidirectional converters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D2221/00—Electric power distribution systems onboard aircraft
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/44—The network being an on-board power network, i.e. within a vehicle for aircrafts
Definitions
- the present invention relates to the field of turbomachines and more precisely relates to an electrical power supply circuit for a turbomachine integrating a rotating electric machine as well as a turbomachine comprising such a circuit and an aircraft comprising such a turbomachine.
- climate change is a major concern for many legislative and regulatory bodies around the world. Indeed, various restrictions on carbon emissions have been, are or will be adopted by various states. In particular, an ambitious standard applies both to new types of aircraft but also to those currently in circulation requiring the implementation of technological solutions in order to make them compliant with current regulations. Civil aviation has been mobilizing for several years now to make a contribution to the fight against climate change.
- Document FR 3 116 303 filed in the name of Safran Helicopter Engines, describes the possibility of equipping an aircraft with a turbomachine, such as a turboprop, integrating both a gas turbine in a thermal part and a rotating electrical machine in an electrical part.
- the thermal part and the electrical part allow hybrid operation of the turbomachine.
- the rotating electric machine makes it possible both to offer an electricity generation function, in generator mode, to supply the aircraft with electricity, and a propulsion function in the context of ground movements of the aircraft, in particular the taxiage type travel.
- the FADEC can for example detect the reaching of intrinsic limitations of the gas turbine, that is to say a limitation of the power delivered, particularly in high altitude conditions with high temperatures. In such a case, a need for additional power is identified.
- the invention aims to resolve the aforementioned problems of the prior art by providing an electrical power supply circuit for a turbomachine comprising a high voltage direct current circuit powered by a high voltage direct current source, connected to at least one direct current converter /alternative of the circuit electrical power supply, the at least one direct/alternating converter being respectively connected to at least one rotating electric machine, the at least one rotating electric machine being respectively coupled to at least one propeller of the turbomachine so as to cause it to rotate the at least one propeller or to generate electricity under the effect of the rotation of the at least one propeller, the electrical supply circuit comprising at least one voltage booster stage connected between the high voltage source and the at least one direct/alternating converter, the at least one voltage-raising stage being capable of raising the voltage supplied to the at least one rotating electric machine when said rotating electric machine drives the at least one propeller in rotation.
- the turbomachine electrical circuit according to the invention is particularly suitable for providing a transient or stabilized electrical boost in the event of detection of a power requirement, within a turbomachine with hybrid electric architecture, in particular for an electric taxiing functionality of the aircraft.
- the at least one voltage boost stage comprises a boost type converter, or an interleaved boost type converter, or a DAB type converter, or a Quasi Z-source type converter.
- the electrical power supply circuit of a turbomachine further comprises a low voltage direct current circuit connected to the high voltage direct current circuit via a converter of the electrical power supply circuit.
- the electrical power supply circuit of a turbomachine further comprises a contactor connected in parallel to the voltage booster stage.
- the invention also relates to a turbomachine comprising an electrical power supply circuit as previously presented.
- the invention also relates to an aircraft comprising a turbomachine as previously presented.
- the invention also relates to a method for controlling at least one voltage boost stage in an electrical power supply circuit of a turbomachine as previously presented, characterized in that it comprises steps of:
- the turbomachine, the aircraft and the method have advantages similar to those previously presented.
- the steps of the method according to the invention are implemented by computer program instructions.
- the invention also relates to a computer program on an information medium, this program being capable of being implemented in a computer, this program comprising instructions adapted to the implementation of the steps of a process as described above.
- the invention also relates to an information medium readable by a computer, and comprising computer program instructions adapted to the implementation of the steps of a method as described above.
- Figure 1 illustrates a turbomachine, here a turboprop, according to one embodiment of the invention.
- Figure 2 illustrates the electrical architecture of the turbomachine, according to one embodiment of the invention.
- Figure 3 illustrates part of a high voltage direct current sub-circuit of the electrical circuit of the turbomachine, according to one embodiment of the invention.
- Figure 4 illustrates a first variant of a voltage step-up stage included in the high voltage direct current sub-circuit of the electrical circuit of the turbomachine, according to one embodiment of the invention.
- Figure 5 illustrates a second variant of a voltage step-up stage included in the high voltage direct current sub-circuit of the electrical circuit of the turbomachine, according to one embodiment of the invention.
- Figure 6 illustrates a third variant of a voltage step-up stage included in the high voltage direct current sub-circuit of the electrical circuit of the turbomachine, according to one embodiment of the invention.
- Figure 7 illustrates a fourth variant of a voltage step-up stage included in the high voltage direct current sub-circuit of the electrical circuit of the turbomachine, according to one embodiment of the invention.
- Figure 8 illustrates a method of controlling the voltage boost stage, according to one embodiment of the invention.
- a turbomachine here a turboprop 10
- a turbomachine comprises a rotating electric machine 2 capable of providing a generator function and a propulsion function.
- the propulsion function can be provided when the gas turbine is operating or stopped.
- the electric machine When the gas turbine is in operation, the electric machine is able to provide additional power. When the gas turbine is stopped, the electric machine is able to provide the power necessary for taxiing type movement.
- the architecture can be fully electric instead of a thermal/electric hybrid.
- the turbomachine 10 is a free turbine turboprop engine.
- the turboprop 10 comprises a gas turbine 11, a propeller 12, a propeller shaft 13, extending towards the gas turbine 11 and being coupled, as described below, to a free turbine 111 by means of a transmission.
- the gas turbine 11 comprises a high pressure turbine, not referenced, rotating a turbine shaft 14 and a compressor, not referenced, and the free turbine 111 which drives a secondary shaft, not referenced, of the gas turbine, concentric with the turbine shaft 14.
- the free turbine 111 is mounted to rotate around the turbine shaft 14 of the high pressure turbine.
- the propeller shaft 13 is surrounded by a protective casing 15. It is supported in the casing 15 by bearings 16 and 17.
- One of the bearings 16 is close to the propeller 12, and the other of the bearings 17 is adjacent to a toothed wheel 18 for driving the carrier shaft -propeller 13, which meshes with the transmission mentioned above.
- the rotating electric machine 19 is, in this example of the invention, arranged concentrically around the propeller shaft 13, between the first bearing 16 and the toothed wheel 18, being surrounded by the casing 15.
- the turbomachine is a “classic” turboprop engine.
- the turbomachine may be a tilting rotor turbomachine, better known under the English name "proprotor”, which is intended to equip a vertical take-off aircraft known under the English name “tiltrotor”.
- the turbomachine can thus be both a turboprop and a turboshaft engine.
- Those skilled in the art are of course able to generalize the present teaching described for a “classic” turboprop to these other types of turbomachines.
- the gas turbine 11 being of the free turbine type, it offers two means of driving the elements of the turboprop, the high pressure turbine and its turbine shaft 14, and the free turbine 111 and its secondary shaft.
- the rotating electric machine 2 is a simple rotating electric machine capable of providing a generating function and an electric propulsion function
- the rotating electric machine 2 can have additional functions, such as those of powering a circuit of de-icing the propeller blades.
- the rotating electric machine 2 is preferably a brushless rotating electric machine, this to limit the risks of wear and maintenance of the turboprop 10, and can thus be both a synchronous rotating electric machine with a permanent magnet and a synchronous rotating electric machine with variable reluctance, or even an asynchronous rotating electric machine.
- Propeller 12 is a single-acting variable pitch propeller.
- the propeller is driven by the gas turbine 11 and/or by the rotating electric machine 2, as described in FR 3 116 303.
- the gas turbine 11 and the rotating electric machine 2 are capable of driving an engine oil pump 21 which allows oil circulation which in particular provides hydraulic pressure to a propeller control unit.
- the propeller control unit has an additional oil pump which is designed to raise the oil pressure supplied by the engine oil pump to allow hydraulic control of the propeller pitch.
- the propeller in the absence of oil pressure when the gas turbine is off and the rotating electric machine is stopped, the propeller is feathered.
- oil pressure is generated by the gas turbine and/or rotating electric machine, the pitch of the propeller decreases which generates traction.
- FIG 2 schematically illustrates the electrical architecture of the turbomachine, according to one embodiment of the invention.
- two propellers 12a and 12b are respectively capable of being rotated by two gas turbines and two rotating electric machines 2a and 2b.
- the electrical circuit of the turbomachine includes a first high voltage direct current sub-circuit, called HVDC after the English “High Voltage Direct Current”.
- the HVDC sub-circuit comprises an HVDC battery 1 preferably typed in power, constituting a voltage source capable of generating a power for example between a few tens and a few hundred kilowatts, under a voltage for example of around several hundred volts , for a few seconds or several minutes.
- the HVDC battery 1 is connected to a DC-DC converter 4.
- the input voltage of the converter 4 is set by the state of charge of the battery and its output voltage is an adjustable DC voltage.
- the converter 4 is optional and can be of the series chopper type (in English “buck”) to lower the voltage, or of the parallel chopper type (in English “boost”) to raise the voltage, or even of the step-down type (in English “buck-boost”) to lower or raise the voltage.
- the DC-DC converter 4 is connected to an HVDC bus 7, itself connected to DC/AC converters 3a and 3b. Each of the DC/AC converters 3a and 3b is respectively connected to the electrical machine 2a and 2b.
- a direct electric current is supplied via the HVDC bus 7 to the converters 3a and 3b which operate as inverters to convert the direct current into alternating electric current and supply it to the electric machines 2a and 2b so as to rotate the propellers 12a and 12b.
- the converters 3a and 3b operate as rectifiers to convert an alternating electric current supplied by the electrical machines 2a and 2b operating as generators into direct electric current supplied to the battery 1 via the HVDC bus 7.
- converters 3a and 3b The structure of converters 3a and 3b is detailed below.
- the electrical circuit of the turbomachine preferably comprises a second low-voltage direct current sub-circuit, typically 28 V.
- the low-voltage direct current sub-circuit comprises a direct current generator 5 and a battery capable of supplying electricity to the various aircraft equipment.
- the first high-voltage direct current sub-circuit and the second low-voltage direct current sub-circuit are connected via a converter 6, for example as described in FR 3 116 303.
- Figure 3 schematically illustrates part of the high voltage direct current sub-circuit of the electrical circuit of the turbomachine previously described and details the converter 3 in more particular.
- the converter 3 comprises a voltage boost stage 3', preferably integrated into the converter 3.
- the voltage boost stage 3' can be a separate component of the converter 3.
- the voltage boost stage 3' is of the type DC-DC voltage booster.
- a contactor 8 is preferably connected in parallel to the voltage booster stage 3'.
- the voltage step-up stage 3' is capable of raising the voltage supplied from the HVDC bus 7 to the rotating electrical machine 2 transiently in order to boost the electrical machine so that it generates additional transient power.
- the contactor 8 makes it possible to short-circuit the voltage booster stage 3' when the contactor 8 is closed.
- the FADEC can for example detect the reaching of intrinsic limitations of the gas turbine, that is to say a limitation of the power delivered, particularly in high altitude conditions with high temperatures. In such a case, a need for additional power is identified.
- the voltage booster stage 3' then makes it possible to supply a higher voltage to the rotating electrical machine 2.
- An electrical boost is then generated and applied to the propeller shaft.
- This electrical boost can either increase the maximum power received by the propeller on a stabilized phase, in the event of operation on a static limitation of the thermal engine, that is to say a limitation on a stop NI or T4 corresponding to the maximum speed of the engine, or transiently increase the instantaneous power received by the propeller in the event of operation of the heat engine at its acceleration limit.
- the voltage booster stage 3' is made inactive by the closing of the contactor 8, which avoids any energy dissipation.
- the structure of the voltage booster stage 3' can be of the "boost" type as shown in Figure 4.
- the voltage step-up stage 3' includes an input across which a direct voltage VI exists. From a first terminal of the input, the voltage step-up stage 3' includes a resistance R in series with an inductance L allowing energy accumulation.
- the inductance L is connected to a first transistor Tl also connected to a second input terminal of the voltage step-up stage 3'.
- the inductor L is also connected to a second transistor T2 connected to a first output terminal of the voltage booster stage 3' and to a capacitor C.
- the capacitor C is also connected to a second output terminal of the voltage-boosting stage 3', the second output terminal of the voltage-boosting stage 3' being connected to the second input terminal of the voltage-boosting stage tension 3'.
- the first transistor Tl has a switch function to allow an accumulation of energy in the inductor L when it is closed and to allow the transfer of this energy to the capacitor C when it is open.
- the output voltage V2 at the output terminals of the voltage step-up stage 3' is thus greater than the input voltage VI.
- This variant is particularly suitable when the amplification ratio between the input voltage VI and the output voltage V2 does not exceed 3.
- the structure of the voltage booster stage 3' can be of the "interleaved boost" type as shown in Figure 5.
- the first input terminal is connected to several parallel branches, three parallel branches in the example shown, each comprising a resistance RI, R2 and R3 in series with an inductance LI, L2 and L3.
- Each of the inductances L is connected to a respective transistor Til, T12 and T13, itself connected to a second input terminal of the voltage step-up stage 3'.
- Each of the inductances L is also connected to a respective diode DI, D2 and D3 connected to a first output terminal of the voltage step-up stage 3' and to a capacitor C.
- the capacitor C is also connected to a second output terminal of the voltage boost stage 3', the second output terminal of the voltage boost stage 3' being connected to the second input terminal of the voltage boost stage 3'.
- the structure of the voltage booster stage 3' can be of the DAB type, according to the English "Dual Active Bridge” as shown in Figure 6.
- This variant is suitable for voltage amplification which can go beyond 3.
- This structure is also interesting because it allows galvanic isolation between the HVDC bus 7 and the converter 3.
- This structure also makes it possible to have a current bidirectional, that is to say that this type of converter can also be used for a propeller braking function.
- This functionality of returning energy to the network is particularly interesting in the case where you want to quickly brake the propellers for reasons of avoiding obstacles such as birds or electric wires for example.
- the voltage step-up stage 3' comprises, starting from the HVDC bus 7 towards the converter 3:
- a first filtering stage 551 of the low pass type in particular adapted to filter at least in part the frequencies, for example greater than or equal to 1 KHz,
- a second reversible DC/AC converter stage 552 which can both provide an inverter function, for a transfer of energy from the HVDC bus 7 to the converter 3, and a rectifier function, for a transfer of energy from the converter 3 to the HVDC bus 7, the second stage being capable of supplying an alternating voltage of high frequency, for example greater than or equal to 1 KHz,
- the transformer being preferably a resonant transformer, that is to say that the resonance frequency of the circuit on the primary side of the transformer 553 is preferably equal to the frequency of resonance of the circuit on the secondary side of the transformer 553, the second direct/alternating converter stage 552 then being preferably configured to supply an alternating voltage at a frequency substantially equal to the resonance frequency of the circuits on the primary and secondary side of the transformer 553,
- a third reversible AC/DC converter stage 554 which can both provide a rectifier function, for a transfer of energy from the HVDC bus 7 to the converter 3, and an inverter function, for a transfer of energy from the converter 3 to the HVDC bus 7, the third stage being capable of supplying an alternating voltage of high frequency, for example greater than or equal to 1 KHz.
- the third reversible AC/DC converter stage 554 is then preferably configured to supply an alternating voltage at a frequency substantially equal to the resonance frequency of the primary and secondary side circuits of the transformer 553, - a fourth filtering stage 555 of the low pass type, in particular adapted to filter at least in part frequencies greater than or equal to 1 KHz.
- first and fourth filtering stages 551, 555 are not necessarily necessary and that, in a simplified configuration, it is possible not to provide them or, advantageously, to only provide the first filtering stage 551 so as to protect the HVDC 7 bus.
- the structure of the voltage booster stage 3' can be of the Quasi Z-source type as shown in Figure 7.
- This variant makes it possible to optimize the mass of the converter.
- the inductances of the circuit can be coupled, which limits their mass and their size and which also makes it possible to limit EMC rejections in differential mode at the input of converter 3.
- the voltage step-up stage 3' comprises, starting from the HVDC bus 7 towards the converter 3, two input terminals. From a first input terminal, the voltage step-up stage 3' comprises a first resistor R41, a first inductor L41, a transistor T4, a second resistor R42 and a second inductor L42 in series. The second inductor L42 is connected to a first output terminal of the voltage step-up stage 3'.
- a first capacitor C41 is connected in parallel with the transistor T, the second resistor R42 and the second inductor L42.
- a second capacitor C42 is connected between a midpoint between the transistor T4 and the second resistor R42 and a second input terminal of the voltage boost stage 3'.
- the second input terminal of the voltage boost stage 3' is connected directly to a second output terminal of the voltage boost stage 3'.
- Figure 8 illustrates an embodiment of the method for controlling the voltage boost stage 3' and comprises steps E1 to E3.
- the first step El is the detection that the power to be provided by the turbomachine to correctly ensure its regulation objectives is greater than the maximum power authorized by the intrinsic limitations of the turbomachine.
- the regulation objectives typically depend on the control of the propeller speed.
- the intrinsic limitations of the turbomachine correspond, for example, to engine limitations in revs or acceleration. This detection is for example carried out by the FADEC of the aircraft.
- step El is followed by step E2 in which the information is provided to a supervisor who then controls the activation of the electrical boost on the rotating electrical machine.
- the supervisor is for example a supervisor of the thermal part and the electrical part of the turbomachine.
- Activation of the electrical boost involves the opening of the contactor 8 and the supply of electricity to the voltage booster stage 3' via the HVDC bus 7.
- the electrical boost given using the voltage step-up stage can either increase the maximum power received by the propeller on a stabilized phase, for example when operating on a static limitation of the thermal engine, or transiently increase the instantaneous power received by the propeller, for example when the heat engine is operating at its acceleration limit.
- step E2 is followed by step E3 in which the supervisor controls the end of the electrical boost by controlling the closing of contactor 8 so as to short-circuit the voltage boost stage.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Dc-Dc Converters (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380087742.XA CN120418155A (zh) | 2022-12-20 | 2023-12-19 | 用于涡轮发动机的供电电路、涡轮发动机和包括这种涡轮发动机的飞行器 |
| EP23841285.2A EP4638274A1 (fr) | 2022-12-20 | 2023-12-19 | Circuit d'alimentation electrique d'une turbomachine, turbomachine et aeronef comportant une telle turbomachine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2214011A FR3143555B1 (fr) | 2022-12-20 | 2022-12-20 | Circuit d’alimentation electrique d’une turbomachine, turbomachine et aeronef comportant une telle turbomachine |
| FRFR2214011 | 2022-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024134088A1 true WO2024134088A1 (fr) | 2024-06-27 |
Family
ID=85462484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2023/052054 Ceased WO2024134088A1 (fr) | 2022-12-20 | 2023-12-19 | Circuit d'alimentation electrique d'une turbomachine, turbomachine et aeronef comportant une telle turbomachine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4638274A1 (fr) |
| CN (1) | CN120418155A (fr) |
| FR (1) | FR3143555B1 (fr) |
| WO (1) | WO2024134088A1 (fr) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10450962B2 (en) * | 2013-12-23 | 2019-10-22 | Safran Helicopter Engines | Method and a system for reliably starting a turbine engine |
| FR3116303A1 (fr) | 2020-11-16 | 2022-05-20 | Safran Helicopter Engines | Turbomachine à propulsion hybride et aéronef comportant une telle turbomachine |
-
2022
- 2022-12-20 FR FR2214011A patent/FR3143555B1/fr active Active
-
2023
- 2023-12-19 CN CN202380087742.XA patent/CN120418155A/zh active Pending
- 2023-12-19 WO PCT/FR2023/052054 patent/WO2024134088A1/fr not_active Ceased
- 2023-12-19 EP EP23841285.2A patent/EP4638274A1/fr active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10450962B2 (en) * | 2013-12-23 | 2019-10-22 | Safran Helicopter Engines | Method and a system for reliably starting a turbine engine |
| FR3116303A1 (fr) | 2020-11-16 | 2022-05-20 | Safran Helicopter Engines | Turbomachine à propulsion hybride et aéronef comportant une telle turbomachine |
Non-Patent Citations (3)
| Title |
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| IQBAL A ET AL: "A Quasi Impedance Source Inverter based Wireless Power Transfer System for Battery Charging Applications for Electric Vehicle", 2019 INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONICS AND COMPUTER ENGINEERING (UPCON), IEEE, 8 November 2019 (2019-11-08), pages 1 - 6, XP033703516, DOI: 10.1109/UPCON47278.2019.8980231 * |
| JALAKAS T ET AL: "Analysis of battery charger topologies for an electric vehicle", ELECTRONICS CONFERENCE (BEC), 2012 13TH BIENNIAL BALTIC, IEEE, 3 October 2012 (2012-10-03), pages 223 - 226, XP032277631, ISBN: 978-1-4673-2775-6, DOI: 10.1109/BEC.2012.6376857 * |
| PEREIRA LUANA K MELGACO ET AL: "Generalized Mathematical Model for an N-cell Interleaved Boost Converter", 2019 IEEE 15TH BRAZILIAN POWER ELECTRONICS CONFERENCE AND 5TH IEEE SOUTHERN POWER ELECTRONICS CONFERENCE (COBEP/SPEC), IEEE, 1 December 2019 (2019-12-01), pages 1 - 6, XP033758267, DOI: 10.1109/COBEP/SPEC44138.2019.9065683 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3143555B1 (fr) | 2025-05-23 |
| CN120418155A (zh) | 2025-08-01 |
| FR3143555A1 (fr) | 2024-06-21 |
| EP4638274A1 (fr) | 2025-10-29 |
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