EP4448934A1 - Procédé de gestion du couple d'une turbomachine - Google Patents
Procédé de gestion du couple d'une turbomachineInfo
- Publication number
- EP4448934A1 EP4448934A1 EP22847562.0A EP22847562A EP4448934A1 EP 4448934 A1 EP4448934 A1 EP 4448934A1 EP 22847562 A EP22847562 A EP 22847562A EP 4448934 A1 EP4448934 A1 EP 4448934A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torque
- electric generator
- electrical
- load
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
- F01D17/04—Arrangement of sensing elements responsive to load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/006—Arrangements of brakes
Definitions
- TITLE Process for managing the torque of a turbomachine
- the present invention relates, in general, to turbomachines for aircraft, and in particular turbomachines equipped with a fan or a variable-pitch propeller connected to a turbine via a shaft and a reduction gear and, more specifically, the management of torque peaks occurring during the operation of such turbomachines.
- the invention relates to a method for managing the torque of a turbomachine comprising a turbine connected to a fan or to a variable-pitch propeller by a shaft and a reduction gear.
- the reducer can be resized.
- the teeth can be reinforced, the bearings increased in size and number of rolling elements, and the structural parts thickened in order to guarantee the reliability of the reducer.
- One solution for not increasing the mass of the reducer is to predict and detect the appearance of torque peaks in order to lower the average torque level seen by the reducer just before the occurrence of the torque peak.
- This detection, prediction and average torque drop is conventionally carried out from a measurement of the torque on the shaft on which the reducer and the turbine are mounted, as well as a control of the setting, that is to say the angle of inclination of the blades of the fan or variable pitch propeller.
- the response time of the stall control is not sufficient to reject the fastest disturbances on the torque linked to the variations in the aircraft's take-off and to the variations in angle of attack and mach, in particular during take-off and in climb.
- the object of the invention is therefore to remedy these drawbacks and to propose a method making it possible to reduce the torque of a turbine engine turbine connected via a shaft and a reduction gear to a fan or a variable-pitch propeller. when a torque peak occurs, and this in a sufficiently short time to reduce the torque transmitted to the reducer and protect the latter, without it being necessary to resize and increase the mass of the turbomachine.
- a method for managing the torque of an aircraft turbomachine comprising a fan or a variable-pitch propeller connected to a turbine by a shaft and a reduction gear, and an electric generator connected to the shaft, the method comprising the following steps: measuring the torque on the shaft from a torque sensor; when the occurrence of a torque peak is measured by the torque sensor, the calculation of a turbine braking setpoint by a control system as a function of the measured torque; and in response to the braking setpoint, drawing off and transferring electrical power from the electrical generator to a load.
- load is meant an electrical device connected to the turbomachine.
- the braking setpoint can be calculated as a function of the difference between the measured torque and a maximum torque setpoint.
- the load may be a dissipative load, the method comprising the adjustment by the control system of a resistance of the dissipative load for the withdrawal of electrical power from the electric generator to the dissipative load.
- an electrical device connected to the turbomachine intended to absorb electrical energy in order to dissipate it.
- the braking setpoint is calculated as a function of the thermal capacity of the dissipative load.
- the dissipative load can be formed by the electric generator and the resistance is the internal resistance of the electric generator constituted by its winding.
- the electric generator when the electric power is drawn off by the internal resistance of the electric generator, the electric generator is short-circuited from the electrical network of the aircraft.
- a control of the variable pitch fan or propeller is performed by the control system in parallel with the adjustment of the resistance of the dissipative load.
- the method may comprise the withdrawal and transfer of electrical power from the electrical generator to an electrical storage device or an electrical consumer.
- the withdrawal and transfer of electrical power from the electrical generator is carried out to one or more loads, including one or more electrical storage devices and/or one or more electrical consumers and /or several dissipative loads.
- the invention also relates to an aircraft turbomachine comprising a fan or a variable-pitch propeller connected to a turbine by a shaft and a reduction gear, and an electric generator connected to the shaft, the turbomachine comprising: a torque sensor configured to measure the torque on the shaft; a control system configured to calculate a turbine braking setpoint when the occurrence of a torque peak is measured by the torque sensor, and configured to draw and transfer electrical power from the electrical generator to a load in response to the braking setpoint.
- the load may be a dissipative load
- the control system being configured to adjust a resistance of the dissipative load in response to the braking setpoint for drawing off electrical power from the electrical generator to the dissipative load.
- control system is configured to calculate the braking setpoint as a function of the thermal capacity of the dissipative load.
- the dissipative load can be formed by the electric generator.
- control system can include a computer for the electric generator configured to calculate the braking setpoint and adjust the internal resistance of the electric generator in response to the braking setpoint.
- control system can be configured for the withdrawal and transfer of electrical power from the electrical generator to an electrical storage device or an electrical consumer.
- the load is formed by the electrical storage device or the consumer.
- control system in response to the braking setpoint, is configured for the withdrawal and transfer of electrical power from the electrical generator to one or more loads, including one or more electrical storage devices and/or a or several electrical consumers and/or several dissipative loads.
- the invention also relates to an aircraft comprising at least one turbomachine as previously described. Brief description of the drawings
- FIG 1 schematically illustrates an aircraft turbomachine according to one embodiment of the invention.
- FIG 2 schematically illustrates an electric generator connected to a dissipative load of a turbomachine according to one embodiment of the invention.
- FIG 3 illustrates braking logic according to one embodiment of the invention.
- FIG 4 illustrates a dissipative load overheating protection logic according to one embodiment of the invention.
- FIG 5 illustrates braking logic according to another embodiment of the invention.
- Figure 1 schematically illustrates an aircraft turbine engine 1.
- the turbomachine comprises a high pressure body 2 comprising a high pressure compressor and a high pressure turbine, and a low pressure body 3 comprising a low pressure compressor 4 and a low pressure turbine 5.
- the low pressure body 3 is connected to a fan 6 via a shaft 7 and a reducer 8.
- the fan 6 can be substituted by a variable-pitch propeller.
- an electric generator 9 connected to the shaft 7 is arranged downstream of the low pressure turbine 5 and comprises a rotor 9a and a stator 9b.
- the turbomachine 1 comprises a torque sensor 10 configured to measure the torque on the shaft 7, advantageously the torque at the input of the reducer 8, or the torque between the fan 6 and the output of the reducer 8, or even between the compressor low pressure turbine 4 and the low pressure turbine 5.
- the turbomachine 1 also comprises a control system configured to calculate a braking setpoint for the low pressure turbine 5 when the occurrence of a torque peak is measured by the torque sensor 10.
- braking setpoint we mean a torque limitation setpoint between the turbine, in this example the low pressure turbine 5 , and the fan 6.
- control system is configured to adjust the resistor 11 of a dissipative load 12, visible in Figure 2.
- the resistor 11 is a variable resistor.
- control system may be able to adjust the torque on the shaft 7 of the low pressure body 3 according to the braking setpoint so as to draw off part of the electrical power from the electrical generator 9 towards the dissipative load.
- control system comprises a regulation computer 13 configured to calculate the braking setpoint and a torque control computer 14 configured to adjust the resistance 11 of the dissipative load 12.
- the regulation computer 13 is connected to the torque sensor 10 and to the torque control computer 14 by electrical connection, which can be analog or digital.
- the regulation computer 13 is configured to control the setting of the fan 6.
- the dissipative load 12 can be formed by the electric generator 9.
- control system may include a computer for the electric generator 9 configured to calculate the braking setpoint and to adjust the internal resistance of the electric generator 9 in response to the braking setpoint.
- the internal resistance or short-circuit resistance of the electric generator 9 allows the current electricity to circulate in the windings and thus transform the power into thermal energy dissipated by the windings.
- the invention also relates to a method for managing the torque of the aircraft turbine engine 1 comprising the measurement of the torque on the shaft 7 from the torque sensor 10.
- the torque considered is the driving torque of the low pressure body 3 transmitted by the shaft 7.
- the torque on the shaft 7 is measured continuously during the operation of the turbomachine 1.
- a braking setpoint for the low pressure turbine 5 is calculated by the control system from the measured torque.
- the occurrence of a torque peak can be detected by measuring a torque disturbance, such as a transient phenomenon, by the torque sensor 10.
- torque peak we mean a sudden increase in torque beyond a maximum threshold value.
- the braking setpoint is calculated by the regulation computer 13 then communicated to the torque control computer 14.
- the torque control computer 14 adjusts the resistance 1 1 of the dissipative load 12 so that part of the electric power of the electric generator 9 is dissipated towards the dissipative load 12.
- the result of the current dissipation of the electric generator 9 through the dissipative load 12 is a limitation of the torque of the low pressure turbine 5.
- the low pressure turbine 5 drives the fan 6 via the shaft 7 so that the limitation of the torque of the low pressure turbine 5 makes it possible to reduce the torque of the fan 6 and, consequently, to reduce the torque transmitted to the reducer 8.
- the maximum torque setpoint is determined as a function of the limits of the reducer 8 so as to optimize its service life.
- the control system comprises a proportional integral differential regulator called PID regulator, without integral component.
- Figure 3 illustrates a braking logic intended to push the torque of the low pressure turbine 5 below a fixed limit 15 by dissipation of current from the electric generator 9 towards the dissipative load 12.
- the braking setpoint is calculated according to the difference between the torque measured 16 by the torque sensor 10 and a maximum torque setpoint 17.
- the braking logic integrates a proportional component 18 and a derivative component 19 of the PID regulator from which flow respectively a proportional gain and a derivative gain on the braking setpoint.
- the torque management method preferably incorporates, in addition to the braking logic, a logic 20 for protecting the dissipative load 12 against overheating.
- the braking setpoint can be calculated according to the thermal capacity of the dissipative load 12.
- the heat capacity is equal to the difference between an estimated temperature 21 of the dissipative load 12 and a limit temperature 22 of the dissipative load 12.
- the limit temperature 22 is a constant representing the temperature limit not to be exceeded including a safety margin.
- the estimated temperature 21 is calculated from the torque sampling setpoint 19.
- a first order filter 23 can be used to estimate the coarse-mesh thermal, but this modeling can be carried out with non-linear, tabulated models, of higher orders, and/or based on other information such as cooling capacity.
- a proportional gain 24 of the protection logic 20 of the dissipative load 12 against overheating results in obtaining a setpoint of limitation 25 of the torque drawn from the electric generator 9.
- the torque draw setpoint 19 is advantageously calculated as a function of the protection logic 20 of the dissipative load 12 against overheating.
- the protection logic 20 of the dissipative load 12 against overheating does not include any derivative component given the slow thermal dynamics.
- the dissipative load 12 can be formed by the electric generator 9 if however the electric generator 9 is capable of absorbing the energy associated with the torque taken from the low pressure turbine 5 without generating fire. Resistor 12 adjusted to respond to the braking setpoint is then the internal resistance of electric generator 9.
- the electrical generator 9 will preferably be short-circuited so as to be disconnected from the electrical network of the aircraft. It is thus possible to protect the consumers present on the electrical network.
- the turbomachine 1 may include a switching relay able to short-circuit the electrical generator 9 of the electrical network of the aircraft.
- the regulation computer 13 can then be configured to control the setting of the fan 6 and communicate to the computer of the electric generator 9 the measurement of the torque recorded by the torque sensor 10.
- a check of the setting of the fan 6 is carried out.
- Adjusting the angle of the blades of the fan 6 makes it possible to control, at least in part, the torque on the shaft 7.
- the driving dynamics of the dissipative load 12 is much greater than that of the timing control, which makes it possible to quickly limit the torque of the low pressure turbine 5 in order to protect the reducer 8 without it being necessary to weigh down or complicate the architecture of the turbomachine 1.
- the tapping and transfer of electrical power from the electric generator 9 for a transfer of said tapped electrical power can be carried out to an electrical storage device 26 sized to absorb all or part of the energy. torque peaks.
- the tapping and transfer of electric power from the electric generator 9 for a transfer of said tapped electric power to the electrical storage device 26 is controlled by the control system.
- control system is capable of controlling the closing of a switching relay 27 for drawing off electrical power from the electrical generator 9 to the electrical storage device 26.
- the electric storage device 26 can be a capacitor, for example a supercapacitor or electrochemical capacitor.
- the turbomachine 1 comprises a three-phase voltage rectifier 28.
- the management method may include the rectification of the three-phase voltage produced by the electric generator 9.
- the three-phase voltage produced by the electric generator 9 can be rectified by a three-phase voltage rectifier 28.
- the voltage rectifier 28 can be used for other power sources of the AC electrical network of the aircraft requiring to be connected to the DC electrical network, for example an 800V rectifier.
- the transfer of electrical power from the electric generator 9 withdrawn can be carried out to an electrical consumer.
- the tapping and transfer of electric power from the electric generator 9 for a transfer of said tapped electric power to the electrical consumer is controlled by the control system.
- the electrical consumer can be a consumer of the electrical network of the aircraft, such as a de-icing device, a lubricating device, a ventilation device for a nacelle of the aircraft, an auxiliary pump feathering of the variable-pitch propeller, or even a computer, for example a control system computer.
- control system is able to communicate with an electrical consumer of the electrical network of the aircraft to set a maximum power value to be transferred to said consumer.
- the control system Upon the occurrence of a torque peak measured by the torque sensor 10, the control system communicates with consumers of the electrical network of the aircraft having overload margins and controls the overload transfer to these consumers temporarily.
- the electric de-icing device can turn on and temporarily absorb one hundred kW of energy for a few seconds, the electric lubrication can increase the flow rate of oil circulation up to about thirty kW, and the propeller feathering auxiliary pump can consume a few tens of kW.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Control Of Turbines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2113552A FR3130313B1 (fr) | 2021-12-15 | 2021-12-15 | Procédé de gestion du couple d’une turbomachine |
| PCT/FR2022/052387 WO2023111476A1 (fr) | 2021-12-15 | 2022-12-15 | Procédé de gestion du couple d'une turbomachine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4448934A1 true EP4448934A1 (fr) | 2024-10-23 |
Family
ID=80595398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22847562.0A Pending EP4448934A1 (fr) | 2021-12-15 | 2022-12-15 | Procédé de gestion du couple d'une turbomachine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4448934A1 (fr) |
| CN (1) | CN118414476A (fr) |
| FR (1) | FR3130313B1 (fr) |
| WO (1) | WO2023111476A1 (fr) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220097864A1 (en) | 2020-09-30 | 2022-03-31 | Ge Avio S.R.L. | Aircraft performance optimization based on engine performance monitoring |
| US12060170B2 (en) | 2020-10-07 | 2024-08-13 | General Electric Company | Flexible engine monitoring |
| US12240130B2 (en) | 2021-07-07 | 2025-03-04 | General Electric Company | System and method for automated movement of a robotic arm |
| US11572827B1 (en) | 2021-10-15 | 2023-02-07 | General Electric Company | Unducted propulsion system |
| US11753144B2 (en) | 2021-10-15 | 2023-09-12 | General Electric Company | Unducted propulsion system |
| US12254366B2 (en) | 2021-11-29 | 2025-03-18 | General Electric Company | System to track hot-section flowpath components in assembled condition using high temperature material markers |
| US12266036B2 (en) | 2022-03-02 | 2025-04-01 | General Electric Company | Computed tomography scatter and crosstalk correction |
| US11859515B2 (en) | 2022-03-04 | 2024-01-02 | General Electric Company | Gas turbine engines with improved guide vane configurations |
| US12459659B2 (en) | 2022-03-07 | 2025-11-04 | General Electric Company | Method and apparatus for controlling electrical machines operating with a turbine engine |
| IT202200006545A1 (it) | 2022-04-01 | 2023-10-01 | Ge Avio Srl | Metodo ed apparecchiatura per calibrare un sensore di coppia di un motore aeronautico |
| US11946378B2 (en) | 2022-04-13 | 2024-04-02 | General Electric Company | Transient control of a thermal transport bus |
| US12281618B2 (en) | 2022-04-25 | 2025-04-22 | General Electric Company | Mounting assembly for a gearbox assembly |
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| US12006880B2 (en) | 2022-09-12 | 2024-06-11 | General Electric Company | High bandwidth control of turbofan/turboprop thrust response using embedded electric machines |
| US12416546B2 (en) | 2023-06-05 | 2025-09-16 | General Electric Company | Slurry-based dust injection system |
| US12305537B2 (en) | 2023-08-04 | 2025-05-20 | General Electric Company | Vane assembly for open fan engine |
| US12365471B2 (en) | 2023-08-04 | 2025-07-22 | General Electric Company | Aircraft with an unducted fan propulsor |
| US12365446B2 (en) | 2023-08-04 | 2025-07-22 | General Electric Company | Aircraft with an unducted fan propulsor |
| US12384522B2 (en) | 2023-08-04 | 2025-08-12 | General Electric Company | Aircraft with an unducted fan propulsor |
| US12228053B1 (en) | 2023-08-09 | 2025-02-18 | General Electric Company | Turbofan engine including integrated pylon and fan outlet guide vane with noise reduction features |
| US12110825B1 (en) | 2023-08-29 | 2024-10-08 | General Electric Company | Systems and method for detecting and responding to icing conditions in gas turbine engines |
| US12595767B2 (en) | 2023-11-27 | 2026-04-07 | General Electric Company | Systems and methods for engine wear reduction |
| US12467366B2 (en) | 2023-12-01 | 2025-11-11 | General Electric Company | Turbine engine with a nozzle having cooling features |
| US12372033B1 (en) | 2024-03-05 | 2025-07-29 | General Electric Company | Turbine engine with sound-based active control |
| US12546259B2 (en) | 2024-03-08 | 2026-02-10 | General Electric Company | Systems and methods for integrating use of starter on the low pressure spool of a turbine engine |
| US12196100B1 (en) | 2024-05-17 | 2025-01-14 | General Electric Company | Engine component assembly with ceramic matrix composite component and connection pin |
| US12429226B1 (en) | 2024-07-03 | 2025-09-30 | General Electric Company | Mixing elements for rotating detonation combustion systems |
| US12359588B1 (en) | 2024-08-02 | 2025-07-15 | General Electric Company | Aircraft engine aeromechanical instability detection |
| US12516637B1 (en) | 2025-02-26 | 2026-01-06 | General Electric Company | Sensing of isolator shock systems |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160178464A1 (en) * | 2014-12-19 | 2016-06-23 | Rolls-Royce Corporation | Torque sensor monitoring for gas turbine engine |
| US10483887B2 (en) * | 2017-08-11 | 2019-11-19 | Rolls-Royce North American Technologies, Inc. | Gas turbine generator temperature DC to DC converter control system |
| CN112664328B (zh) * | 2019-10-15 | 2024-07-23 | 通用电气公司 | 用于控制无涵道发动机的系统和方法 |
-
2021
- 2021-12-15 FR FR2113552A patent/FR3130313B1/fr active Active
-
2022
- 2022-12-15 WO PCT/FR2022/052387 patent/WO2023111476A1/fr not_active Ceased
- 2022-12-15 EP EP22847562.0A patent/EP4448934A1/fr active Pending
- 2022-12-15 CN CN202280082477.1A patent/CN118414476A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN118414476A (zh) | 2024-07-30 |
| WO2023111476A1 (fr) | 2023-06-22 |
| FR3130313B1 (fr) | 2025-02-28 |
| FR3130313A1 (fr) | 2023-06-16 |
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