EP4118312A1 - Procédé de contrôle d'une turbomachine comportant une machine électrique - Google Patents
Procédé de contrôle d'une turbomachine comportant une machine électriqueInfo
- Publication number
- EP4118312A1 EP4118312A1 EP21714641.4A EP21714641A EP4118312A1 EP 4118312 A1 EP4118312 A1 EP 4118312A1 EP 21714641 A EP21714641 A EP 21714641A EP 4118312 A1 EP4118312 A1 EP 4118312A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torque
- turbomachine
- setpoint
- corresponds
- stop
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/48—Control of fuel supply conjointly with another control of the plant
- F02C9/56—Control of fuel supply conjointly with another control of the plant with power transmission control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/36—Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
- F05D2220/323—Application in turbines in gas turbines for aircraft propulsion, e.g. jet engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/70—Application in combination with
- F05D2220/76—Application in combination with an electrical generator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/04—Purpose of the control system to control acceleration (u)
- F05D2270/042—Purpose of the control system to control acceleration (u) by keeping it below damagingly high values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/05—Purpose of the control system to affect the output of the engine
- F05D2270/052—Torque
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/10—Purpose of the control system to cope with, or avoid, compressor flow instabilities
- F05D2270/101—Compressor surge or stall
Definitions
- the present invention belongs to the general field of aeronautics, and in particular that of turbomachines. It relates more particularly to a method for controlling a turbomachine, said turbomachine comprising a low pressure body and a high pressure body respectively driven by a low pressure rotation shaft and a high pressure rotation shaft, as well as at least one electric machine. forming a torque injection / sampling device on one of said rotation shafts.
- FIG. 1 there is shown schematically a turbomachine 100 comprising a gas generator. More particularly, the example of FIG. 1 illustrates a turbomachine 100 of the double-flow and double-body turbojet type for an aircraft.
- the turbomachine 100 comprises, from upstream to downstream in the direction of the gas flow, a fan 110, a low pressure compressor 111, a high pressure compressor 112, a combustion chamber 113 which receives a QCMD fuel flow setpoint, a high pressure turbine 114, a low pressure turbine 115 and a primary exhaust nozzle 116.
- the low pressure (or LP) compressor 111 and the low pressure turbine 115 are connected by a low pressure shaft 121 and together form a low pressure body.
- the high pressure (or HP) compressor 112 and the high pressure turbine 114 are connected by a high pressure shaft 122 and together form, with the combustion chamber, a high pressure body.
- the blower 110 which is driven by the BP shaft 121, compresses the ingested air. This air is divided downstream of the fan 110 between a secondary air flow which is directed directly to a secondary nozzle (not shown) through which it is ejected to participate in the thrust provided by the turbomachine 100, and a so-called primary flow which enters the gas generator, consisting of the low pressure body and the high pressure body, then which is ejected into the primary nozzle 116.
- the QCMD fuel flow setpoint is determined as a function of a difference between the speed of the turbomachine and a setpoint speed which depends on a position of a control lever that can be manipulated by the pilot.
- a fuel regulation loop is implemented by a control device, generally integrated into the computer of the full authority regulation device, also known as “FADEC” (acronym of the English expression “Full Authority Digital Engine Control ”), fitted to the turbomachine.
- the fuel regulation loop also aims to ensure that the flow of fuel injected into the combustion chamber, in the acceleration or deceleration phase (ie transient phase), does not exceed at least a given threshold value. , called “operability stop”, beyond which an engine malfunction may be encountered.
- said fuel regulation loop makes it possible to manage the controllability as well as the operability of the turbomachine 100.
- protective threshold values corresponding respectively to an acceleration stop and a deceleration stop are implemented. These operability stops are determined from limits relating to a C / P ratio of the fuel flow C injected into the combustion chamber over the static pressure P measured at the inlet of the combustion chamber. These limits of the C / P ratio are set, in a manner known per se, to protect themselves from pumping during acceleration and from switching off the engine during deceleration. In other words, these limits correspond to the design constraints of the turbomachine 100 which must be observed in order to ensure the operability of the engine.
- the acceleration or deceleration time of a motor depends directly on the margin available with respect to the operability stops. For example, when the pilot commands an acceleration of the engine speed, it may happen that the current speed does not manage to follow the acceleration trajectory thus commanded, because the latter would impose an overrun of the acceleration stop, thus leading to pumping. Also, in this case, the current speed increases slowly, with a delay, in order to preserve the turbomachine.
- turbomachine 100 In order to improve the response time of a turbomachine during a transient phase, while limiting the impact of the design constraints linked to the operability stops, it has in particular been proposed to hybridize the turbomachine 100 by equipping it with an electric machine.
- an electric machine is configured to inject and / or take a torque on one of the rotation shafts respectively associated with the low pressure and high pressure bodies.
- the object of the present invention is to remedy all or part of the drawbacks of the prior art, in particular those set out above, by proposing a solution which makes it possible to effectively regulate a torque generated by at least one electric machine. equipping a hybridized turbomachine, so as to obtain an excellent response time of the turbomachine, an improvement in the operability of the latter as well as a limitation of the electrical consumption of said at least one electrical machine.
- the invention relates to a method of controlling a turbomachine comprising a gas generator comprising a combustion chamber, a low pressure rotation shaft and a high rotation shaft pressure, the turbomachine comprising at least one electric machine forming a torque injection / sampling device on one of said rotation shafts.
- said method comprises a step of implementing a fuel regulation loop in order to determine a fuel flow setpoint in the combustion chamber, and comprising:
- Said method also comprises a step of implementing a torque regulation loop in order to determine a torque setpoint for said at least one electric machine, and comprising a determination of a torque correction magnitude as a function of said deviation of flow rate, said torque setpoint being determined as a function of said torque correction quantity.
- the torque regulation loop makes it possible to act in concert with the fuel flow regulation loop when the latter is limited in its regulation, due, for example, to potential phenomena pumping or extinguishing.
- the torque regulation loop therefore makes it possible to release the available margin with respect to the design constraints of the turbomachine. The operability of the turbomachine is thus improved.
- the torque regulation loop advantageously makes it possible to set aside the pumping and extinction limits of the turbomachine to allow better regulation of the fuel setpoint .
- the torque control loop does not replace the fuel flow control loop but comes to its support when operating limits are reached, that is to say when one or more operability stop are reached. Regulating the speed is thus not fundamentally upset, which ensures reliable regulation, and therefore ultimately a much better response time of the turbomachine in comparison with the solutions of the prior art.
- said control method differs remarkably from the prior art in that the torque correction magnitude is determined as a function of the flow rate difference. Indeed, such arrangements are particularly advantageous because they make it possible to take into account the physical reality of the turbomachine, in particular its operation, and this independently of the speed (transient or stabilized).
- thermodynamic aspects involved in the variation of the fuel flow rate are taken into account in determining the quantity.
- control method may further include one or more of the following characteristics, taken in isolation or in any technically possible combination.
- the torque torque correction magnitude is determined equal to: expression in which:
- the efficiency h of the gas generator is expressed as follows: expression in which:
- - g corresponds to a ratio between an isobaric heat capacity and an isochoric heat capacity
- the torque correction magnitude is determined according to the following expression:
- FC _BEB_ X F BV expression in which:
- said at least one operability stop corresponds to any one of the following parameters:
- the invention relates to a control system for a turbomachine comprising a gas generator comprising a combustion chamber, a low pressure rotation shaft and a high pressure rotation shaft, the turbomachine comprising at least one electric machine forming a torque injection / sampling device on one of said rotation shafts.
- said control system comprises a fuel regulation loop for determining a fuel flow setpoint in the combustion chamber, said fuel regulation loop comprising:
- a turbomachine monitoring module configured to detect the reaching of at least one operability stop of said turbomachine
- a determination module configured to determine a corrected fuel flow setpoint if said at least one operability stop is reached, said corrected fuel flow setpoint exhibiting a deviation, called “flow deviation”, from the current fuel flow setpoint.
- Said control system also comprises a torque regulation loop for determining a torque setpoint for said at least one electric machine, said torque regulation loop comprising:
- a first determination module configured to determine a torque correction quantity as a function of said flow rate difference
- a second determination module configured to determine said torque setpoint as a function of said torque correction quantity.
- the invention relates to a turbomachine comprising a gas generator comprising a combustion chamber, a low pressure rotation shaft and a high pressure rotation shaft, the turbomachine comprising at least one electrical machine forming a torque injection / sampling device on at least one of said rotation shafts as well as a control system according to the invention.
- the invention relates to an aircraft comprising a turbomachine according to the invention.
- FIG. 1 schematically represents a turbomachine comprising a gas generator according to the prior art
- FIG. 2 schematically represents, in its environment, an embodiment of a turbomachine according to the invention
- FIG. 3 represents an example of the hardware architecture of a control system according to the invention belonging to the turbomachine of FIG. 2;
- FIG. 4 schematically represents an example of the operation of two regulation loops according to the invention, a fuel flow regulation loop B1 and a torque regulation loop B2, said loops B1, B2 belonging to the fuel flow control system.
- FIG. 4 schematically represents an example of the operation of two regulation loops according to the invention, a fuel flow regulation loop B1 and a torque regulation loop B2, said loops B1, B2 belonging to the fuel flow control system.
- FIG. 5 represents, in the form of a flowchart, the main steps of a control method according to the invention.
- the present invention belongs to the field of regulation (i.e. control) of the operation of a turbomachine comprising a gas generator.
- a turbomachine of the double-flow and double-body turbojet type for an aircraft such as for example a civil airplane capable of transporting passengers
- a gas generator for example, it is possible to consider a turbine engine, a turbofan, etc.
- the invention also remains applicable for any type of aircraft (airplane, helicopter, etc.), but, more broadly, for any type of industrial machine equipped with a turbomachine according to the invention.
- FIG. 2 schematically shows, in its environment, an embodiment of a turbomachine T according to the invention.
- the turbomachine T admits a general configuration at least in accordance with the state of the art. By way of non-limiting example, such a general configuration has been described above with reference to FIG. 1.
- the turbomachine T comprises, from upstream to downstream in the direction of the gas flow, a fan 10, a low pressure compressor 11, a high pressure compressor 12, a combustion chamber 13 which receives a setpoint QCMD fuel flow rate, a high pressure turbine 14, a low pressure turbine 15 and a primary exhaust nozzle 16.
- the low pressure compressor (or LP) 11 and the low pressure turbine 15 are connected by a low pressure shaft 21 and together form a low pressure body.
- the high compressor pressure (or HP) 12 and the high pressure turbine 14 are connected by a high pressure shaft 22 and together form, with the combustion chamber, a high pressure body.
- This air is divided downstream of the fan 10 between a secondary air flow which is directed directly towards a secondary nozzle (not shown) through which it is ejected to participate in the thrust supplied by the turbomachine T, and a so-called primary flow which enters the gas generator, consisting of the low pressure body and the high pressure body, then which is ejected into the primary nozzle 16.
- the operation of the turbomachine T is controlled by a full authority regulation device, called "FADEC" 20.
- FADEC full authority regulation device
- the pilot of the aircraft modifies the position a control lever, which has the effect of modifying the QCMD fuel flow setpoint in the combustion chamber 13.
- the turbomachine T according to the invention also comprises at least one electric machine ME.
- said at least one electric machine ME forms a device for injecting / removing torque from one of said rotation shafts.
- the torque generated by the electric machine ME is generated by the latter on receipt of a torque setpoint TRQCMD, as detailed below.
- the turbomachine T comprises a single electric machine ME and that the rotation shaft on which is injected / taken a torque thanks to the electric machine ME is the high pressure shaft 22.
- the rotation shaft on which this single electric machine ME acts is the low pressure shaft 21.
- the turbomachine T comprises a plurality of electric machines T capable of injecting / withdrawing torque from just one of said shafts or even from separate shafts.
- the electric machine ME is configured, according to a first operating mode, to generate a torque capable of driving the high pressure shaft 22.
- a first operating mode corresponds to an "operating mode motor ".
- the electrical machine ME is also configured, according to a second operating mode, to generate a torque capable of taking mechanical energy from the high pressure shaft 22, this drawn energy being able, for example, to be used for power supply purposes.
- at least one electrical equipment item for the turbomachine T such as, for example, the full authority control device FADEC.
- such a second operating mode corresponds to a “generator operating mode”.
- Those skilled in the art can refer to document WO2016 / 020618 as regards the production and use of such an electric machine ME for a turbomachine, these aspects therefore not being detailed further here. .
- the turbomachine T also comprises a control system SYS_C comprising a control loop for the fuel setpoint QCMD, called “first loop B1”, as well as a loop for regulating the torque setpoint TRQCMD, called “second B2 loop”. Said first loop B1 and second loop B2 are implemented, according to the invention, according to a control method explained later.
- said SYS_C control system is integrated in the FADEC 20, more particularly in the computer of the latter. No limitation is however attached to the location of said control system SYS_C within the turbomachine T since the latter is able to implement the control of said turbomachine T via said two regulation loops B1 and B2.
- control loops B1 and B2 are integrated within a single entity which forms a control device with which said control system SYS_C merges.
- first loop B1 and the second loop B2 are integrated respectively within a first control device and a second control device, these devices being themselves integrated into the SYS_C control system.
- FIG. 3 schematically represents an example of the hardware architecture of the SYS_C control system according to the invention.
- the SYS_C control system has the hardware architecture of a computer.
- said SYS_C control system comprises, in particular, a processor 1, a random access memory 2, a read only memory 3 and a non-volatile memory 4. It also has communication means 5.
- the communication means 5 in particular allow the SYS_C control system to send the torque setpoint TRQCMD to the electric machine ME, the latter therefore being equipped with communication means configured to receive said torque setpoint TRQCMD.
- the communication means 5 also allow the SYS_C control system to receive measurements of physical quantities acquired by acquisition means fitted to the turbomachine T.
- the communication means 5 include for example a computer data bus capable of transmitting said instructions. as well as said measurements of physical quantities.
- the communication means 5 comprise a communication interface, wired or wireless, capable of implement any suitable protocol known to those skilled in the art (Ethernet, Wifi,
- Said measurements of physical quantities correspond, for example, to measurements of pressure, of shaft rotation speed, of aircraft speed.
- the acquisition means configured to acquire said measurements comprise in known manner an acquisition chain comprising a sensor dedicated to the measurement of each of said magnitudes.
- the configuration of such acquisition means is well known to those skilled in the art and is therefore not detailed further here.
- a person skilled in the art will also know how to determine which physical quantities need to be measured so that the control method according to the invention can be executed, with regard to the modes of implementation described below for the control method. according to the invention.
- the ROM 3 of the SYS_C control system constitutes a recording medium according to the invention, readable by the processor and on which is recorded a computer program PROG according to the invention, comprising instructions for the execution of the steps of the control method according to the invention.
- the program PROG defines functional modules of the first control loop B1 and of the second control loop B2, which are based on or control the hardware elements 2 to 5 of said control system SYS_C mentioned above.
- the first loop B1 comprises in particular:
- a MOD_Bl_SUR monitoring module of the turbomachine T configured to detect the reaching of at least one operability stop of said turbomachine T
- a MOD_Bl_DET determination module configured to determine a corrected fuel flow setpoint QCMD_CORREC if said at least one operability stop is reached, said corrected fuel flow setpoint QCMD_CORREC exhibiting a deviation, called “flow deviation” EC_DEB, relative to the current fuel flow setpoint.
- current setpoint refers here to the QCMD fuel flow setpoint in force before a correction is determined due to the reaching of said at least one operability stop.
- the second B2 loop for its part, comprises:
- a first determination module MOD_B2_DETl configured to determine a torque correction quantity ATRQ as a function of said flow rate difference EC_DEB
- a second MOD_B2_DET2 determination module configured to determine said torque setpoint TRQCMD as a function of said torque correction quantity ATRQ.
- an operability stop corresponding to said acceleration stop only constitutes a variant implementation of the invention.
- Other choices are possible, such as for example: a C / P type deceleration stop, a stop relative to a mechanical speed NI, a stop relative to a mechanical speed N2, a stop relative to an exhaust gas temperature at the inlet of the low pressure turbine 15 of the turbomachine (temperature known as “EGT”, acronym for “Exhaust Gas Temperature” in the English literature), etc .;
- FIG. 4 schematically represents an example of the operation of the loops B1 and B2.
- the MOD_Bl_SUR monitoring module admits as input the fuel setpoint which corresponds to the current fuel flow setpoint QCMD if said acceleration stop C / P is not reached or the fuel flow setpoint QCMD_CORREC if said C / P acceleration stop is reached.
- the MOD_Bl_SUR monitoring module also admits appropriate pressure measurements as input in order to be able to determine whether said acceleration stop C / P has been reached or not, including in particular the pressure P at the output of the high-pressure compressor 12.
- the MOD_Bl_SUR monitoring module also admits as input an indicator corresponding to the speed N of rotation of the rotation shaft on which torque is injected / taken off by the electric machine ME.
- this indicator corresponds to the NHP speed of rotation of the high pressure shaft 22.
- the speed indicator admitted by the monitoring module M0D_B1_SUR is used by the latter to determine if there is a transient intent.
- the determination module MOD_Bl_DET for its part admits as input a signal (not shown in the figures) coming from the monitoring module MOD_Bl_SUR when the acceleration stop C / P is reached.
- the determination module MOD_Bl_DET also admits as input appropriate pressure and temperature measurements in order to be able to determine the corrected setpoint QCMD_CORREC.
- the pressure and temperature measurements admitted as input by the determination module MOD_Bl_DET include a PS3 pressure measurement corresponding to the static pressure of the high-pressure compressor 12, a temperature measurement T25 corresponding to the total inlet temperature of the high-pressure compressor 12 as well as a temperature measurement Tstd corresponding to the standard temperature at sea level (i.e. equal to 288.15 K (Kelvin ) or 15 ° C (Celsius)). Thanks to these measurements, the determination module MOD_Bl_DET determines the corrected setpoint QCMD_CORREC in a manner known per se, according to the following expression:
- the various measurements PS3, T25 and Tstd can all be admitted to the input of the monitoring module MOD_Bl_SUR and then be transmitted to the determination module MOD_Bl_DET.
- a fuel flow correction command can then be generated by the FADEC on the basis of said corrected setpoint QCMD_CORREC which is redirected to the input of the MOD_Bl_SUR monitoring module in order to close the first loop Bl.
- the first determination module MOD_B2_DETl admits as input the EC_DEB flow deviation determined by the MOD_Bl_DET determination module (the determination of the EC_DEB flow deviation is carried out conventionally by subtraction between the corrected setpoint QCMD_CORREC and the setpoint current QCMD).
- the first determination module MOD_B2_DET1 also admits as an input the speed indicator supplied as an input to the monitoring module MOD_Bl_SUR, namely the NHP speed in the present embodiment.
- the first determination module MOD_B2_DETl can receive as input other measurements and / or indicators so as to be able to execute different modes of implementation of the control method according to the invention, these modes being detailed later.
- those skilled in the art know how to determine which measurements and / or which indicators the first determination module MOD_B2_DET1 can receive as input in order to allow the execution of said modes of implementation.
- MOD_B2_DET1 determines the torque correction quantity ATRQ which is transmitted to the second determination module MOD_B2_DET2. Therefore, said second determination module MOD_B2_DET2 determines the torque setpoint TRQCMD in a manner known per se as a function of the torque correction quantity ATRQ.
- a torque command can then be generated by the FADEC on the basis of said torque setpoint TRQCMD.
- This torque setpoint TRQCMD is then redirected in order to close loop B2.
- the instruction TRQCMD is redirected to the input of the first determination module MOD_B2_DET1 which can then itself transmit it to the second determination module MOD_B2_DET2.
- the setpoint TRQCMD is redirected to the input of the second determination module MOD_B2_DET2.
- FIG. 5 represents, in the form of a flowchart, the main steps of the control method according to the invention, as implemented by the control system SYS_C.
- the method of controlling first of all a step F10 of implementing the first loop Bl As illustrated by FIG. 5, the method of controlling first of all a step F10 of implementing the first loop Bl.
- This step F10 firstly comprises a sub-step F10 1 for monitoring the turbomachine T.
- This sub-step F10_1 for monitoring is implemented by the monitoring module MOD_Bl_SUR of the first loop Bl.
- the control method comprises a sub-step F10 2 for determining the corrected setpoint QCMD_CORREC , the difference from the current flow setpoint QCDM is represented by said flow rate difference EC_DEB.
- This sub-step F10_2 of determination is implemented by the determination module MOD_Bl_DET of the first loop Bl.
- said sub-step F10_2 is executed following the transmission of a signal from the monitoring module MOD_Bl_SUR to the determination module MOD_Bl_DET, this signal conveying, in a manner known per se , information representative of the fact that said acceleration stop C / P has been reached.
- the determination module MOD_Bl_DET also determines the flow deviation EC_DEB (substep F10_3) which is transmitted (substep F10_4) to the first determination module MOD_B2_DETl of the second loop B2.
- Said control method also comprises a step F20 for implementing the second loop B2.
- This step F20 follows the implementation of the step F10 associated with the first loop B1.
- the implementation of the second loop B2 is based on the first loop B1, as is apparent. already clearly of the elements mentioned with reference to Figure 4.
- This step F20 firstly comprises a sub-step F20_1 for determining the torque correction quantity ATRQ as a function of the flow rate difference EC_DEB.
- This step F20_1 is implemented by the first determination module MOD_B2_DET1 of the second loop B2.
- the torque correction quantity ATRQ is determined as a function of the flow rate difference EC_DEB is particularly advantageous because this makes it possible to take into account the physical reality of the turbomachine T, in particular its operation, and this regardless of the regime (transient or stabilized).
- the term “physical reality” refers here to the fact that the operation of the electric machine ME is linked to the actual variation in fuel flow. In other words, the thermodynamic aspects involved in the variation of the fuel flow rate are taken into account in determining the quantity ATRQ.
- the torque correction quantity ATRQ is determined according to the following expression: expression in which:
- - FHV corresponds to the calorific value of the fuel (expressed in J. kg 1 ), - C_1 is a constant value,
- the first determination module MOD_B2_DETl admits as input the measurements / indicators EC_DEB, FHV, h, C_l, NHP in order to calculate the quantity ATRQ.
- Ah_CORE_EXIT corresponds to the enthalpy available to generate work at the outlet of the gas generator (expressed in J. kg 1 ),
- V - V 0 corresponds to flight speed
- - PW_OFF_TAKE corresponds to the power extracted in the form of air sampling and / or mechanical sampling on the high pressure body.
- the power generated by the gas generator can be linked to the chemical power linked to the use of the fuel according to the following expression: expression in which Wff corresponds to the fuel flow (expressed in kg. s 1 ).
- the variation in the fuel flow rate AWff can then be linked to the variation in power DR_ME of the electric machine ME according to the following expression: the constant value C_2 being introduced here in order to allow a readjustment of the values of AWff provided by this formula with values obtained according to another method, for example thanks to tests carried out on a test bench or even thanks to numerical simulations .
- the efficiency h of the gas generator can be expressed in different ways.
- said efficiency h is expressed in the following form: expression in which:
- - g corresponds, in a manner known per se, to a ratio between an isobaric heat capacity and an isochoric heat capacity
- the torque correction quantity ATRQ is determined according to the following expression: expression in which C'_l is a constant value.
- said constant C'_l encompasses not only the constant C_1 mentioned above but also the value of the efficiency h here considered to be constant.
- the control method then comprises a sub-step F20 2 for determining the torque setpoint TRQCMD as a function of said torque correction quantity ATRQ.
- this determination sub-step F20_2 is implemented by the second determination module MOD_B2_DET2 of the second loop B2.
- the determination of said torque setpoint TRQCMD is carried out in a manner known per se.
- account can be taken of a torque setpoint previously observed before the determination of the torque correction quantity ATRQ, so that the setpoint newly determined torque TRQCMD corresponds to the old torque setpoint to which said torque correction quantity ATRQ is applied.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
- Control Of Turbines (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2002447A FR3108139B1 (fr) | 2020-03-12 | 2020-03-12 | Procédé de contrôle d’une turbomachine comportant une machine électrique |
| PCT/FR2021/050347 WO2021181027A1 (fr) | 2020-03-12 | 2021-03-02 | Procédé de contrôle d'une turbomachine comportant une machine électrique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4118312A1 true EP4118312A1 (fr) | 2023-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21714641.4A Pending EP4118312A1 (fr) | 2020-03-12 | 2021-03-02 | Procédé de contrôle d'une turbomachine comportant une machine électrique |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12123363B2 (fr) |
| EP (1) | EP4118312A1 (fr) |
| CN (1) | CN115552105B (fr) |
| FR (1) | FR3108139B1 (fr) |
| WO (1) | WO2021181027A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3087491B1 (fr) * | 2018-10-18 | 2020-11-06 | Safran Aircraft Engines | Procede de commande d'une turbomachine comportant un moteur electrique |
| JP7558093B2 (ja) * | 2021-03-12 | 2024-09-30 | 本田技研工業株式会社 | 航空機用推進システム |
| JP7731126B2 (ja) * | 2021-08-04 | 2025-08-29 | 国立研究開発法人宇宙航空研究開発機構 | 発電システムおよび航空機 |
| IT202200006545A1 (it) | 2022-04-01 | 2023-10-01 | Ge Avio Srl | Metodo ed apparecchiatura per calibrare un sensore di coppia di un motore aeronautico |
| FR3166183A1 (fr) * | 2024-09-09 | 2026-03-13 | Safran Aircraft Engines | Procédé de commande d’une turbomachine hybride |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011102548A (ja) * | 2009-11-10 | 2011-05-26 | Toyota Motor Corp | ガスタービン制御装置 |
| FR2977638B1 (fr) | 2011-07-04 | 2017-10-06 | Snecma | Procede de commande pour transitoires de regime d'une turbomachine |
| EP2971699B8 (fr) * | 2013-03-15 | 2020-01-15 | Rolls-Royce Corporation | Gestion de l'optimisation des performances et de la durée de vie pour moteur à turbine |
| FR3024755B1 (fr) | 2014-08-08 | 2019-06-21 | Safran Aircraft Engines | Hybridation des compresseurs d'un turboreacteur |
| GB201414662D0 (en) * | 2014-08-19 | 2014-10-01 | Rolls Royce Plc | Method of operation of a gas turbine engine |
| US10584646B2 (en) * | 2016-07-29 | 2020-03-10 | Pratt & Whitney Canada Corp. | System and method for control of gas turbine engine |
| US11230385B2 (en) * | 2017-06-08 | 2022-01-25 | General Electric Company | Hybrid-electric propulsion system for an aircraft |
| FR3087491B1 (fr) * | 2018-10-18 | 2020-11-06 | Safran Aircraft Engines | Procede de commande d'une turbomachine comportant un moteur electrique |
-
2020
- 2020-03-12 FR FR2002447A patent/FR3108139B1/fr active Active
-
2021
- 2021-03-02 WO PCT/FR2021/050347 patent/WO2021181027A1/fr not_active Ceased
- 2021-03-02 US US17/905,970 patent/US12123363B2/en active Active
- 2021-03-02 EP EP21714641.4A patent/EP4118312A1/fr active Pending
- 2021-03-02 CN CN202180027298.3A patent/CN115552105B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115552105A (zh) | 2022-12-30 |
| US20230103519A1 (en) | 2023-04-06 |
| US12123363B2 (en) | 2024-10-22 |
| FR3108139A1 (fr) | 2021-09-17 |
| FR3108139B1 (fr) | 2022-09-23 |
| WO2021181027A1 (fr) | 2021-09-16 |
| CN115552105B (zh) | 2026-03-31 |
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