Power distribution using centralized control in aircraft

Abstract

The invention relates to a system (100) for exchanging power in an aircraft, comprising: a voltage bus (160); a low voltage electromechanical converter (150BP); a high voltage electromechanical converter (150HP); and for each electromechanical converter (150BP, 150HP): a voltage control module (130BP, 130HP) and a control module (140BP, 140HP) to ensure that the exchange setpoint (GBP *, GHP *) is satisfied. The system (100) further comprises a power adjustment module (106) configured to: for at least one of the electromechanical converters (150BP, 150HP): determine a voltage correction value ([delta] VBP, [delta] VHP); and applying, in a voltage control module (130BP, 130HP) associated with the associated electromechanical converter (150BP, 150HP), the voltage correction value ([delta] VBP, [delta] VHP) to the voltage setpoint (VDC *) such that the voltage control module (130BP, 130HP) controls the bus voltage (VDC) to the corrected voltage setpoint (VDC *).

Description

Technical Field

[0001] The present invention relates to a power exchange device in an aircraft, an aircraft propulsion system comprising such a power exchange device, an aircraft comprising such a propulsion system, and a corresponding method. Background Art

[0002] In the context of reducing the ecological footprint of aircraft, electrification and hybrid technology are seen as a technical solution that can significantly improve the environmental performance of aircraft, especially by reducing fuel consumption.

[0003] In the known related technologies, the power exchange device in the aircraft includes:

[0004] A voltage bus is designed to have a bus voltage;

[0005] A low-pressure (BP) electromechanical converter designed to exchange power between a voltage bus and a low-pressure body of an aircraft turbine;

[0006] a high-pressure (HP) electromechanical converter designed to exchange power between a voltage bus and a high-voltage body of an aircraft turbine; and

[0007] For each electromechanical converter:

[0008] a voltage control module designed to control the bus voltage by determining a switching setpoint for the electromechanical converter, and

[0009] The module for controlling the electromechanical converter is designed to control the electromechanical converter in such a way that the electromechanical converter complies with a switching setpoint.

[0010] The voltage bus is typically part of an aircraft electrical network, which may also include power supplies and / or loads connected to the voltage bus.

[0011] In this way, the electromechanical converter forms the interface between the HP and BP bodies of the turbine and the electrical network of the aircraft.

[0012] In particular, to ensure correct operation of the loads, the bus voltage must be kept within a preset range, which is achieved by bus voltage control modules respectively associated with the electromechanical converters.

[0013] These control modules may have zero static bus voltage error, which has the advantage that the bus voltage remains very close to its setpoint. However, the control of the two bus voltages is independent and can compete with each other, causing the power split to drift, with one electromechanical converter exchanging all the power while the other exchanges no power at all.

[0014] One solution to this problem proposed in the related art is a so-called "decentralized" device that implements droop control to define the power distribution between the power exchanged by the low-voltage body and the power exchanged by the high-voltage body by defining appropriate droop coefficients. However, the bus voltage control module has a non-zero static error, causing the bus voltage to remain far from its set value. This can cause the bus voltage to exceed the range when power is called by loads on the grid or when power is supplied by the power source.

[0015] Furthermore, the control of power distribution is highly dependent on the accuracy of the bus voltage measurement and requires a high-precision acquisition chain (<1% error).

[0016] Alternatively, one of the two electromechanical systems should control the bus voltage, while the other should apply the power draw or power import setpoint from the central computer.

[0017] However, this solution has the disadvantage of not being robust to losses in the electromechanical system controlling the bus voltage. Another system might reconfigure itself, but the network would remain electrically lost for a significant period of time. Furthermore, the central computer must constantly send setpoints to the system that does not perform voltage control.

[0018] Another solution in the related art is to propose so-called "centralized" devices, where an external computer controls the bus voltage, applies or does not apply the power draw or power input setpoint from the central computer, and distributes the power or torque setpoint to the two electromechanical converters.

[0019] The system has the advantage of being robust to losses in one of the two electromechanical converters, which can then control the voltage and distribute the power to be drawn.

[0020] However, the dependency between the centralized computer and the two electromechanical converters requires the addition of fast communication (greater than 10 kHz).

[0021] In addition, Japanese patent application publication number JP 2014131469 A describes two generators coupled to a turbine, and two controllers for controlling the two generators respectively. Each controller is designed to receive a power ratio set value and a ratio of the current provided by the associated generator to the total current provided by the two generators. The ratio is calculated based on the measured value of the current provided by each generator. Each controller is designed to provide the associated generator with a voltage set value that the generator must provide, which is calculated by calibrating the resistance value in the output filter, which requires accurate knowledge of the resistance value, which is difficult to obtain due to changes in the environment (temperature, etc.). U.S. Patent No. 11,355,929 is basically similar, except that the U.S. patent does not describe the precise operation of the controller, and the current ratio is calculated based on the current measurement value provided by the associated generator and the total current measurement value provided by the two generators.

[0022] It would therefore be desirable to provide a system that avoids at least some of the problems and limitations discussed above. Summary of the Invention

[0023] Therefore, a power exchange device for use in an aircraft is proposed, comprising:

[0024] A voltage bus is designed to present a bus voltage;

[0025] a low-voltage electromechanical converter designed to exchange power between a voltage bus and a low-voltage body of a turbine of the aircraft;

[0026] a high-voltage electromechanical converter designed to exchange power between a voltage bus and a high-voltage body of said turbine of the aircraft; and

[0027] For each electromechanical converter:

[0028] a voltage control module designed to control the bus voltage by determining the switching setpoint of the mentioned electromechanical converter, and

[0029] A control module, configured to control the electromechanical converter so that the electromechanical converter complies with an exchange setting value;

[0030] The power exchange device further includes a power regulation module, which is designed to: for each electromechanical converter:

[0031] determining a voltage correction value; and

[0032] In a voltage control module associated with the mentioned electromechanical converter, the voltage correction value is applied to the voltage set point, so that the voltage control module controls the bus voltage to the corrected voltage set point.

[0033] Thus, the present invention enables decentralized voltage control, i.e., duplicated across both electromechanical converters. This ensures robustness in the event of a loss or failure of control on one side. Furthermore, the power exchanged by each electromechanical converter can be centrally controlled. This avoids any drift in power distribution (which could result in power being supplied only by one side) and allows the exchanged power (or powers) to be defined according to the turbine's needs.

[0034] Furthermore, by referencing the voltage correction value in the voltage control module, the updating frequency of the voltage correction value can be kept low, thereby avoiding the need for fast communication.

[0035] Furthermore, applying the correction value to the voltage setpoint means that if a fault occurs in the power regulation module such that it no longer provides correction (equivalent to zero correction), the direct current (DC) voltage control module automatically continues to operate by controlling the voltage at the voltage setpoint. This prevents the fault from spreading.

[0036] The power exchange device according to the present invention may further include one or more of the following optional features in any technically possible combination.

[0037] Optionally, the exchange setpoint is a power setpoint to be exchanged between the mentioned electromechanical converter and the voltage bus.

[0038] Furthermore, optionally, the exchange setpoint is a setpoint for the current to be exchanged between the mentioned electromechanical converter and the voltage bus, or optionally, each electromechanical converter comprises an electric machine coupled to the associated body, the exchange setpoint is a torque setpoint of the electric machine.

[0039] Optionally, the turbine power conditioning module further comprises:

[0040] a variation calculation module designed to determine a correction value for the power to be exchanged by the electromechanical converter; and

[0041] The corrector is designed to determine the voltage correction value according to the power correction value to be exchanged.

[0042] Optionally, the corrector has zero static error.

[0043] Additionally, optionally, a voltage correction value is determined to control an operating characteristic of the turbine to a set value.

[0044] Optionally, the voltage correction value is determined based on a measured value of the operating characteristic and a set value of the operating characteristic.

[0045] In addition, optionally, the power regulation module also includes a set value determination module, which is designed to determine a so-called direct exchange set value, and the device also includes a selection module for the mentioned electromechanical converter, which is designed to receive the direct exchange set value according to instructions and provide the direct exchange set value instead of the exchange set value provided by the voltage control module to the control module of the mentioned electromechanical converter, so that the mentioned electromechanical converter complies with the direct exchange set value.

[0046] Optionally, the device also includes local computers, namely a low-voltage local computer and a high-voltage local computer, which are independent of each other and are respectively coupled to the low-voltage electromechanical converter and the high-voltage electromechanical converter, each local computer at least implementing a control module for controlling the voltage of the voltage bus and a control module for controlling the mentioned electromechanical converter.

[0047] Optionally, the device further comprises a central computer for implementing at least the power regulation module.

[0048] Optionally, the central computer is also independent of the local computers.

[0049] Furthermore, optionally, the voltage control module is designed to implement voltage control at a voltage control frequency, and the power regulation module is designed to update the voltage correction value at a frequency lower than the voltage control frequency, preferably at a frequency one tenth of the voltage control frequency.

[0050] A propulsion system for an aircraft is also proposed, comprising a turbine and a device according to the invention.

[0051] An aircraft comprising a propulsion system according to the invention is also proposed.

[0052] A method for exchanging power in an aircraft is also proposed, the method comprising:

[0053] For each of the low-voltage electromechanical converter and the high-voltage electromechanical converter, the low-voltage electromechanical converter is designed to exchange power between a voltage bus of the aircraft's turbine and the low-voltage body, the voltage bus being designed to have a bus voltage, and the high-voltage electromechanical converter is designed to exchange power between the voltage bus of the aircraft's turbine and the high-voltage body:

[0054] Controlling the bus voltage by determining the switching setpoint of the mentioned electromechanical converter, and

[0055] controlling the electromechanical converter so that the electromechanical converter complies with a switching setting value; and

[0056] For at least one of the electromechanical converters:

[0057] Determine the voltage correction value, and

[0058] The voltage correction value is applied to the voltage set point so that the bus voltage is controlled to the corrected voltage set point.

[0059] A computer program is also provided, which can be downloaded from a communication network and / or recorded on a computer-readable medium, and which contains instructions for executing the steps of the method for exchanging power in an aircraft according to the invention when the program is executed by a computer. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The invention will be better understood from the following description, given by way of example only and with reference to the accompanying drawings, in which:

[0061] Figure 1 is a simplified view of a power exchange device according to the present invention on an aircraft,

[0062] Figure 2 is a functional view of a bus voltage control module of a high voltage converter coupled to a control module of the high voltage converter to provide a power setpoint,

[0063] Figure 3 is a functional view of a bus voltage control module of a low voltage converter coupled to a control module of the low voltage converter,

[0064] Figure 4 is a functional view of a control module of the high-voltage converter for controlling the power exchanged by the high-voltage converter to a power setpoint value provided by a voltage controller of the high-voltage converter,

[0065] Figure 5 is a functional view of a control module of the low-voltage converter for controlling the power exchanged by the low-voltage converter to a power setpoint value provided by a voltage controller of the low-voltage converter,

[0066] Figure 6 is a simplified illustration of the device according to the invention, with a selection module for directly applying the power setpoint to be distributed, and

[0067] Figure 7 is a functional view of the power exchange method in an aircraft. DETAILED DESCRIPTION

[0068] refer to Figure 1 , an example of a propulsion system 98 for an aircraft implementing the present invention will now be described.

[0069] The propulsion system 98 comprises firstly a turbine 102 comprising a low-pressure body 104 and a high-pressure body 103. The turbine 102 is, for example, a propulsion turbine of an aircraft.

[0070] Propulsion system 98 also includes a power exchange device 100 .

[0071] The power exchange device 100 includes a voltage bus 160 and at least one electrical load 14, 15 connected to the voltage bus 160. Each electrical load 14, 15 corresponds to, but is not limited to, one or more equipment items such as an aircraft. In operation, the voltage bus 160 has a continuous bus voltage V DC .

[0072] The device 100 also comprises an electromechanical converter 150, also known as a low voltage converter BP , the low voltage converter is designed to exchange power P between the voltage bus 160 and the low voltage body 104 BP Thus, for example, the low voltage electromechanical converter 150 BP Designed to extract mechanical power from the low voltage body 104 in a first power transfer direction in order to supply power to the voltage bus 160. For example, the low voltage electromechanical converter 150 BP It is also designed to draw power from the voltage bus 160 in the second power transmission direction in order to supply mechanical power to the low voltage body 104. BP , between the voltage bus 160 and the low voltage electromechanical converter 150 BP The exchange current I BP .

[0073] Similarly, for the high voltage body 103, the device 100 also comprises an electromechanical converter 150, referred to as a high voltage converter. HP The high voltage converter is designed to exchange power P between the voltage bus 160 and the high voltage body 103 HP For example, the electromechanical high voltage converter 150 HP Designed to extract mechanical power from the high voltage body 103 in a first power transmission direction in order to supply power to the voltage bus 160. For example, the electromechanical high voltage converter 150 HP It is also designed to draw power from the voltage bus 160 in the second power transmission direction in order to supply mechanical power to the high voltage body 103. HP , between the voltage bus 160 and the electromechanical high voltage converter 150 HP The exchange current I HP .

[0074] For example, each electromechanical converter 150 BP , 150HP The system comprises a motor coupled to the low voltage body 104 or the high voltage body 103, and an AC / DC converter designed to transmit electrical power between the voltage bus 160 and the motor. In this way, the motor can receive mechanical torque to generate AC current, which is rectified by the AC / DC converter to provide a bus voltage V DC The AC / DC converter can also convert the voltage V DC To supply AC power to the motor so that the motor can provide mechanical torque to inject power into the turbine 102 .

[0075] The device 100 further includes a first electromechanical converter 150 for each of the electromechanical converters 150. BP , 150 HP Voltage control module 130 BP , 130 HP , voltage control module 130 BP , 130 HP is designed to convert the bus voltage V DC Control to voltage setting value V DC* , the voltage setting value V DC* For two voltage control modules 130 BP , 130 HP In particular, each voltage control module 130 BP , 130 HP is designed to determine the electromechanical converter 150 mentioned BP , 150 HP The exchange setting value G of the physical quantity BP * , G HP * , thereby controlling the bus voltage V DC , this physical quantity is equal to the exchanged power P BP 、P HP In fact, injecting electric power into the voltage bus 160 tends to increase the bus voltage V DC , while drawing electrical power from the voltage bus 160 tends to reduce the bus voltage V DC Therefore, by adjusting the exchange setting value G BP * , G HP * , the exchanged power P can be modified BP 、P HP , so that the electromechanical converter 150 BP , 150 HP Injecting or withdrawing more or less electrical power, thereby modifying the bus voltage V DC .

[0076] For example, swap the setting value G BP * , G HP * The electromechanical converter 150 is to be BP , 150 HP Switching power setting value P BP * 、P HP * ,like Figure 1 shown in the brackets.

[0077] Alternatively, exchange the setting value G BP * , G HP * It can be directed to the electromechanical converter 150 mentioned above. BP , 150 HP and the current I between the voltage bus 160 BP , I HP When the set value V DC* When constant, at the set value V DC* The bus voltage V controlled at DC Also remains basically constant, so that the current I BP , I HP Directly represents the exchanged power P BP 、P HP .

[0078] Alternatively, exchange the setting value G BP * , G HP * It can be a set value for the torque of the motor.

[0079] The device 100 further includes two control modules 140 BP , 140 HP , two control modules 140 BP , 140 HP are designed to control the electromechanical low voltage converter 150 BP and high voltage converter 150 HP , to control the physical quantities to their exchange set values ​​G BP * , G HP * .

[0080] The device 100 further comprises a power conditioning module 106, which is designed to be used for BP , 150 HP At least one (eg, two in the example shown) of the two switches is used to adjust the exchanged power PBP 、P HP To this end, the power conditioning module 106 is designed to control the electromechanical converter 150 BP , 150 HP At least one of the voltage control modules 130 BP , 130 HP Apply voltage correction value δV BP , δV HP .

[0081] The voltage correction value δV BP , δV HP The determination is, for example, to control the operating characteristics of the turbine 102 to a set value Var*. For example, but not limited to, the operating characteristics may include one or more of the following: fuel inlet flow rate and / or air inlet flow rate, the rotation speed of the low-pressure body 104, the rotation speed of the high-pressure body 103, the air inlet temperature and / or the fuel inlet temperature and / or the exhaust gas temperature discharged from the combustion chamber. For example, the voltage correction value δV is determined based on the measured value Var of the operating characteristic and the set value Var* of the operating characteristic. BP , δV HP .

[0082] For example, the power regulation module 106 is further configured to set a voltage correction value δV BP , δV HP The threshold value can be set at the bus voltage V DC between 1% and 10%.

[0083] To determine the voltage correction value δV BP , δV HP First, for example, the power adjustment module 106 may include a variation calculation module 108, which is designed to determine the power to be supplied by the electromechanical converter 150 based on a comparison of the measured value Var of the operating characteristic with the set value Var* of the operating characteristic. BP , 150 HP Exchange power correction value δP BP ,δP HP The power regulation module 106 may further include a corrector 110 BP , 110 HP , Corrector 110 BP , 110 HP Designed to correct the value δP according to the power to be exchanged BP ,δP HP Determine the voltage correction value δV BP , δV HPThe use of a corrector makes it possible to avoid the problems associated with the use of resistance values ​​in the aforementioned patent application JP 2014131469A.

[0084] In a non-limiting example, the turbine 102 may apply power to accelerate the rotation of the high pressure body 103 during the takeoff phase of the aircraft. For efficient takeoff, the minimum rotation speed of the high pressure body 103 may be defined as N2 min In this case, the variation calculation module 108 may determine a non-zero (δP) for the HP electromechanical converter. HP ≠0) is the correction value δP of the power to be exchanged HP , and zero for the BP electromechanical converter (δP BP =0) is the correction value δP of the power to be exchanged BP Then, the corrector 110 associated with the HP electromechanical converter HP The voltage correction value δV to be applied will be calculated HP , so that the HP electromechanical converter can inject power into the HP body of the turbine by drawing power from the voltage bus 160, thereby supplying mechanical power to the HP body. This will result in an increase in speed in order to comply with the minimum speed setpoint N2 min effect.

[0085] Preferably, the corrector 110 BP , 110 HP With zero static error. For example, the corrector 110 BP , 110 HP It is, for example, a proportional-integral (PI) type or a proportional-integral-derivative (PID) type with "anti-windup" control in order to prevent the voltage or power control of the device 100 from being affected by the voltage correction value δV defined. BP , δV HP performance degradation or loss of stability caused by exceeding the threshold.

[0086] Still refer to Figure 1 , the device 100 may include a low voltage converter 150 BP and high voltage electromechanical converter 150 HP Associated independent local computer CL BP , CL HP .

[0087] Therefore, each local computer CL BP , CL HP At least implement the voltage control module 130 BP , 130 HPand associated electromechanical converter 150 BP , 150 HP Control module 140 BP , 140 HP Therefore, a smaller number of computers can be used. Each local computer CL BP , CL HP An associated electromechanical converter 150 may also be implemented BP , 150 HP Corrector 110 BP , 110 HP .

[0088] For example, the apparatus 100 further includes a computer that is independent of the local computer CL BP , CL HP The central computer CC is designed to implement the change calculation module 108. The central computer CC can also implement the corrector 110 HP , 110 BP One or two of .

[0089] exist Figure 1 In the illustrated example, the central computer CC implements the entire power regulation module 106, namely the variation calculation module 108 and the two correctors 110. HP , 110 BP .

[0090] refer to Figure 2 , voltage control module 130 HP Comparator 300 is included, for example HP , comparator 300 HP Designed to calculate the voltage correction value δV HP Corrected voltage setting value V DC* With bus voltage V DC The difference ΔV DC,HP :ΔV DC,HP =V DC* -δV HP -V DC .

[0091] Alternatively, the comparator 300 HP Can be configured to calculate the voltage correction value δV by HP Corrected voltage setting value V DC* The square of the bus voltage V DC The difference between the squares of ΔV 2 DC,HP :ΔV 2 DC,HP =(V DC* -δV HP ) 2-V 2 DC .

[0092] Voltage control module 130 HP Also includes, for example, a corrector 301 HP , Corrector 301 HP is designed to be used according to the difference ΔV DC,HP or ΔV 2 DC,HP To determine the exchange setting value G HP * , for example, the power setting value P to be exchanged HP * Preferably, the corrector has zero static error. For example, the corrector 301 HP It is PI type or PID type.

[0093] Similarly, reference Figure 3 , voltage control module 130 BP Comparator 300 is included, for example BP and the corrector 301 BP .

[0094] Local computer CL BP , CL HP The presence of zero static error correctors in the BP and HP electromechanical converters may result in differences in power distribution, where one of the BP or HP electromechanical converters consumes all the power. To control the power distribution between the BP and HP electromechanical converters, a central computer CC may be designed to use a voltage correction value δV BP , δV HP Send to local computer CL BP , CL HP To balance the exchanged power P BP 、P HP .

[0095] Each voltage control module 130 BP , 130 HP It can also be designed to implement voltage control at a voltage control sampling frequency (eg 10 kHz).

[0096] In order to stabilize the power exchange of the device 100, the power regulation module 106 is preferably designed to update the voltage correction value δV at a frequency lower than the control frequency. BP , δV HP , preferably the voltage correction value is updated at a frequency of one tenth of the control frequency. This is because, in order not to interfere with the voltage control and give the voltage control time to control the voltage, preferably, the voltage correction value δV BP , δV HPThe voltage correction value can be kept constant within several voltage control cycles. For example, the voltage correction value can be updated at a frequency lower than 1kHz. Therefore, there is no need to update the voltage correction value between the power regulation module 106 and the voltage control module 130. HP , 130 BP Provide fast communication (for example, greater than 1kHz) between the central computer CC and one or more local computers CL. BP , CL HP Therefore, there is no need for a central computer CC and one or more local computers CL BP , CL HP Provides fast communication between.

[0097] Therefore, it should be understood that the device 100 can operate with active balancing (power and / or voltage) on only one side, which can be done on the central computer CC and the local computer CL. BP , CL HP Ensures redundancy in the event of a communication interruption between one of the computers.

[0098] refer to Figure 4 , control module 140 HP Including, for example, block 400 HP , block 400 HP is designed to determine the electromechanical converter 150 HP The set value of at least one current of the motor, which defines the power exchanged. For example, in a rotating reference frame containing a direct axis and an orthogonal axis, the phase current I of a three-phase motor represented by a direct current and an orthogonal current is A,HP , I B,HP and I C,HP For example, block 400 HP Designed to determine the DC current setpoint I D,HP * and the quadrature current setting value I Q,HP * For example, based on the angular position θ of the motor rotor HP and speed ω HP and the bus voltage V DC to confirm.

[0099] In particular, the angular position θ of the motor rotor HP and speed ω HP Enables representation of electrical quantities in a rotating reference frame, such as phase current I A,HP , I B,HP and I C,HP . Bus voltage V DC It can be used to modulate the phase current or to determine the DC setpoint I using the flux removal method. D,HP * .

[0100] Control module 140 HP Also includes, for example, a current control block 401 HP , current control block 401 HP Designed to be used based on one or more current setpoints I DHP * , I QHP * and the one or more currents (for example, the phase currents I for the three phases A, B and C) A,HP , I B,HP and I C,HP ) is measured to the high voltage electromechanical converter 150 HP Provides commands. For example, the control is pulse width modulation control PWM BP 、PWM HP .

[0101] In a similar way, refer to Figure 5 , control module 140 BP Including, for example, block 400 BP , block 400 BP Designed to determine the low voltage electromechanical converter 150 BP Block 400 defines a set value of at least one current, the one or more currents defining the power exchanged. For example, the phase currents of the motor, expressed as a direct current and a quadrature current. BP Designed to determine the DC setpoint I D,BP * and the quadrature current setting value I Q,BP * For example, the determination is based on the angular position θ of the motor rotor BP and the rotational speed ω BP and the bus voltage V DC conduct.

[0102] Control module 140 BP Also includes, for example, a current control block 401 BP , control block 401 BP Designed to be used based on one or more current setpoints I D,BP * , I Q,BP * and the one or more currents (for example, the phase currents I for the three phases A, B and C) A,HP , I B,HP and I C,HP ) is measured to the low voltage electromechanical converter 150 BP Provides commands. For example, the control is pulse width modulation control PWM BP 、PWM HP .

[0103] refer to Figure 6 The apparatus 100 may further include a set value determination module 109, which is configured to determine the set value for the electromechanical converter 150. BP , 150 HP The so-called direct exchange setpoint G' of one or both BP , G' HP For example, the set value determination module 109 may be implemented by a central computer CC.

[0104] In this case, the apparatus 100 may further include a BP , 150 HP Selection module 170 BP , 170 HP , select module 170 BP , 170 HP is designed to receive data directly from the central computer CC for the electromechanical converter 150 mentioned. BP , 150 HP Direct exchange setting value G' BP , G' HP . Select Module 170 BP , 170 HP It is also designed to directly send data to the control module 140 BP , 140 HP Provides direct exchange of setpoint G' BP , G' HP , rather than by the voltage control module 130 BP , 130 HP Provided exchange setting value G BP * , G HP * This is done selectively, for example, upon receiving the mode PS from the setpoint determination module 109. BP or mode PS HP In this way, the direct exchange setting value G' is completed according to the associated BP , G' HP , to directly control each electromechanical converter 150 HP The exchange power P BP 、P HP .

[0105] exist Figure 6 In the example shown, only the selection module 170 is activated. HP .

[0106] No need to calculate voltage correction value, directly provide direct exchange setting value G' BP or G'HP , making it possible to define power exchanges in operating phases where it is not suitable to calculate voltage correction values, for example, when it is desired that the power exchange on one side is fixed and the exchange on the other side is arbitrary. In addition, the direct exchange set value G' is directly provided BP or G' HP This means that the setpoint can be applied more quickly, which is useful in assistive situations, for example.

[0107] In activating the selection module 170 HP , 170 BP In this case, the bus voltage V is controlled on the other side. DC .

[0108] refer to Figure 7 , an example of a power exchange method 700 according to the present invention will be described.

[0109] For electromechanical converter 150 BP , 150 HP At least one of the methods 700 includes the following steps 702 and 704.

[0110] In step 702, the power regulation module 106 determines the voltage correction value δV BP and δV HP .

[0111] In step 704, the electromechanical converter 150 is connected to the electromechanical converter 150. BP , 150 HP Associated voltage control module 130 BP , 130 HP In the process, the power regulation module 106 applies the voltage correction value δV BP , δV HP Applied to voltage setting value V DC* .

[0112] For low voltage electromechanical converter 150 BP and high voltage electromechanical converter 150 HP For each electromechanical converter in, method 700 further includes steps 706 and 708 .

[0113] In step 706, the voltage control module 130 HP , 130 BP The bus voltage V DC Control to the corrected voltage setting value V DC* If necessary, the voltage correction value δV BP , δV HP The bus voltage V DC Control to the corrected voltage setting value VDC* Above, the electromechanical converter 150 mentioned BP , 150 HP Determine the exchange setting value G BP * , G HP * .

[0114] In step 708, the control module 140 HP , 140 BP Controlling the electromechanical converter 150 BP , 150 HP , so that the electromechanical converter 150 BP , 150 HP Comply with the exchange setting value G BP * , G HP * .

[0115] In summary, it should be noted that the present invention is not limited to the above embodiments. In fact, it is obvious to those skilled in the art that various modifications can be made to the above embodiments based on the teachings disclosed above.

[0116] In the above detailed description of the present invention, the terms used should not be interpreted as limiting the present invention to the embodiments disclosed in this specification, but should be interpreted as including all equivalent solutions that can be anticipated by those skilled in the art by applying their common sense to the implementation of the above disclosed teachings.

Claims

1. A power exchange device (100) for use in an aircraft, comprising: The voltage bus (160) is designed to present a bus voltage (V DC ); Low voltage BP electromechanical converter (150 BP ), designed to exchange power (P) between the voltage bus (160) and the low-pressure body (104) of the turbine (102) of the aircraft BP ); High voltage HP electromechanical converter (150 HP ), designed to exchange power (P) between the voltage bus (160) and the high-voltage body (103) of the turbine (102) of the aircraft HP ); as well as For each electromechanical converter (150 BP , 150 HP )of: Voltage Control Module (130 BP , 130 HP ), is designed to determine the electromechanical converter (150 BP , 150 HP ) of the exchange setting value (G BP * , G HP * ) to control the bus voltage (V DC ),as well as Control module (140 BP , 140 HP ), designed to control the electromechanical converter (150 BP , 150 HP ), so that the electromechanical converter (150 BP , 150 HP ) in accordance with the exchange setting value (G BP * , G HP * ); Characterized in that the power exchange device further comprises a power regulating module (106), which is designed to: BP , 150 HP ) in at least one electromechanical converter: Determine the voltage correction value (δV BP , δV HP ); as well as In the case of the electromechanical converter (150 BP , 150 HP ) associated with the voltage control module (130 BP , 130 HP ), the voltage correction value (δV BP , δV HP ) is applied to the voltage setting value (V DC* ), so that the voltage control module (130 BP , 130 HP ) will be the bus voltage (V DC ) is controlled to the corrected voltage setting value (V DC* ).

2. The power exchange device (100) according to claim 1, wherein: The exchange setting value (G BP * , G HP * ) is to be used in the electromechanical converter (150 BP , 150 HP ) and the power setting value (P BP * , P HP * ).

3. The power exchange device (100) according to claim 1, wherein: The exchange setting value (G BP * , G HP * ) is for the electromechanical converter (150 BP , 150 HP ) and the current (I BP , I HP ) set value, or each of the electromechanical converters (150 BP , 150 HP ) comprises a motor coupled to an associated body (103, 104), the exchange setpoint (G BP * , G HP * ) is the torque setting value of the motor.

4. The power exchange device (100) according to any one of claims 1 to 3, wherein: The power conditioning module (106) of the turbine (102) comprises: A variation calculation module (108) is designed to determine the variation to be determined by the electromechanical converter (130 BP , 130 HP ) exchange power correction value (δP BP , δP HP );as well as Corrector (110 BP , 110 HP ), is designed to correct the power value to be exchanged (δP BP , δP HP ) determines the voltage correction value (δV BP , δV HP ).

5. The power exchange device (100) according to claim 4, wherein: The corrector (110 BP , 110 HP ) has zero static error.

6. The power exchange device (100) according to any one of claims 1 to 5, wherein: The voltage correction value (δV BP , δV HP ) is determined to control the operating characteristics of the turbine (102) to a set value (Var*).

7. The power exchange device (100) according to claim 6, wherein: The voltage correction value (δV BP , δV HP ) is determined based on the measured value (Var) of the operating characteristic and the set value (Var*) of the operating characteristic.

8. The power exchange device (100) according to any one of the preceding claims, wherein: The power regulation module (106) further comprises a setpoint determination module (109) designed to determine a so-called direct switching setpoint (G' BP , G' HP ), and the power exchange device further includes the electromechanical converter (150 BP , 150 HP ) selection module (170 BP , 170 HP ), the selection module is designed to receive the direct exchange setting value (G') according to the instruction BP , G' HP ) and directly switching the set value instead of the voltage control module (130 BP , 130 HP ) provides the exchange setting value (G BP * , G HP * ) is provided to the electromechanical converter (150 BP , 150 HP ) of the control module (140 BP , 140 HP ), so that the electromechanical converter (150 BP , 150 HP ) in accordance with the direct exchange setting value (G' BP , G' HP ).

9. The power exchange device (100) according to any one of the preceding claims, comprising a local computer, respectively a low voltage local computer (CL BP ) and high voltage local computer (CL HP ), the low-voltage local computer and the high-voltage local computer are independent of each other and are respectively coupled to the low-voltage electromechanical converter (150 BP ) and the high voltage electromechanical converter (150 HP ), each local computer implements at least a control module (130) for controlling the voltage of the voltage bus BP , 130 HP ) and for controlling the electromechanical converter (150 BP , 150 HP ) control module (140 BP , 140 HP ).

10. The power exchange device (100) according to any one of the preceding claims, comprising: A central computer (CC) is used to implement at least the power regulation module (106).

11. The power exchange device (100) according to claim 9 and 10, wherein: The central computer (CC) is independent of the local computer (CL BP , CL HP ).

12. The power exchange device (100) according to any one of the preceding claims, wherein: The voltage control module (130 BP , 130 HP ) is designed to implement voltage control at a voltage control frequency, and wherein the power regulation module (106) is designed to update the voltage correction value at a frequency lower than the control frequency, preferably at a frequency of one tenth of the control frequency.

13. A propulsion system (98) for an aircraft, comprising a turbine (102) and a device (100) according to any one of claims 1 to 12.

14. An aircraft comprising a propulsion system (98) according to the preceding claim.

15. A method (500) for exchanging power in an aircraft, characterized in that The method comprises: For so-called low voltage BP electromechanical converters (150 BP ) and so-called high voltage HP electromechanical converters (150 HP ) in each electromechanical converter, the low voltage electromechanical converter (150 BP ) is designed to exchange power (P) between a voltage bus (160) and a low-pressure body (104) of a turbine (102) of said aircraft BP ), the voltage bus is designed to have a bus voltage (V DC ), the high voltage electromechanical converter (150 HP ) is designed to exchange power between the voltage bus (160) and the high-voltage body (103) of the turbine (102) of the aircraft: By determining the electromechanical converter (150 BP , 150 HP ) of the exchange setting value (G BP * , G HP * ) to control the bus voltage (V DC )(800), and Controlling the electromechanical converter (150 BP , 150 HP ), so that the electromechanical converter (150 BP , 150 HP ) in accordance with the exchange setting value (G BP * , G HP * )(801); and for the electromechanical converter (150 BP , 150 HP ) in at least one electromechanical converter: Determine (802) the voltage correction value (δV BP , δV HP ),as well as The voltage correction value (δV BP , δV HP ) is applied to (803) the voltage setting value (V DC* ), so that the bus voltage (V DC ) is controlled to the corrected voltage setting value (V DC* )superior.

16. A computer program capable of being downloaded from a communication network and / or recorded on a computer-readable medium, characterized in that: The computer program contains instructions for carrying out the steps of the method for exchanging power in an aircraft according to the preceding claim, when the program is executed by a computer.

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