Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
  • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
  • H02K7/1807—Rotary generators
  • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B64—AIRCRAFT; AVIATION; COSMONAUTICS
  • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
  • B64D15/00—De-icing or preventing icing on exterior surfaces of aircraft
  • B64D15/12—De-icing or preventing icing on exterior surfaces of aircraft by electric heating
• • 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
  • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
  • F01D25/02—De-icing means for engines having icing phenomena
• • 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
  • F01D7/00—Rotors with blades adjustable in operation; Control thereof
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
  • H02K11/0094—Structural association with other electrical or electronic devices
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K16/00—Machines with more than one rotor or stator
  • H02K16/02—Machines with one stator and two or more rotors
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
  • H02K17/42—Asynchronous induction generators
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K51/00—Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B64—AIRCRAFT; AVIATION; COSMONAUTICS
  • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
  • B64D2221/00—Electric power distribution systems onboard aircraft
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
  • H01F38/18—Rotary transformers

Definitions

• Electric power supply system comprising an asynchronous machine and propulsion motor equipped with such a system
• the invention relates to a system for supplying electrical energy, particularly for supplying electrical equipment carried by a rotating support.
• the invention also relates to a propulsion engine equipped with such a power system.
• the invention provides means for supplying electrical energy for electrical equipment carried by the blades of a rotor of a propulsion motor, or the blades of two rotors in inverse rotations of a propulsion motor, such as the deicing equipment of these blades or the electrical positioning systems of such blades.
• Rotating transformers are also known that also provide electrical transmission from the fixed parts of the aircraft or the engine.
• the laminated materials lose their properties as soon as the temperature increases (typically above 200 ° C). This results in significant losses and transformer sensitivity to vibration and shock.
• An example of a document describing a transforming transformer in the context mentioned is WO2010 / 081654.
• the invention aims to solve the problems mentioned above and provide a reliable solution, requiring little maintenance, having a low weight and occupying a limited space.
• an electric power supply system comprising an asynchronous machine, an arrangement for rotating a rotor of the asynchronous machine by a rotor of a propulsion motor and an electrical connection for the motor.
• supplying at least one electrical equipment by said rotor of the asynchronous machine characterized in that the asynchronous machine is furthermore equipped to receive alternating electrical energy by a stator of said asynchronous machine, it has, on a range predetermined speed of drive by said rotor of the propulsion motor of the rotor of the asynchronous machine, a power transfer efficiency of said stator said rotor preferred to the conversion efficiency of mechanical energy of rotation into electrical energy.
• the asynchronous machine comprises a progressive corrugation winding at least in a rotor or in a stator. This increases the reliability of the asynchronous transformer.
• the asynchronous machine comprises a winding with a single bar conductor notch. The number of welds required is thus reduced, which reduces the weight and bulk of the device.
• the invention also consists, in another aspect, of a propulsion motor having a rotor carrying at least one electrical equipment, the motor comprising at least one electric power supply system as mentioned above, the electrical equipment being connected to the electrical connection of the power system.
• a propulsion motor having a rotor carrying at least one electrical equipment, the motor comprising at least one electric power supply system as mentioned above, the electrical equipment being connected to the electrical connection of the power system.
• the stator of the asynchronous machine is arranged to receive alternating electrical energy from the propulsion motor, by a generator, a propulsion engine accessory gearbox, or an electrical network.
• said stator of the asynchronous machine is stationary relative to the nacelle of the propulsion motor, or stationary relative to a second rotor of the propulsion motor.
• the motor comprises a second rotor carrying at least a second electrical equipment, the motor comprising at least a second power supply system.
• the second electrical equipment being connected to the electrical connection of the second power system, the two power supply systems being arranged in parallel to receive, by a respective stator, the alternative electric energy from the same source.
• a connection between the electrical equipment and the electrical connection of the supply system passes through a mechanical power transmission mechanism, or by a rotating transformer, or by a generator or by a second rotor of the propulsion engine. rotating in the opposite direction of the first rotor.
• the equipment may in particular be a device for de-icing a blade, or an electrical positioning system for a blade.
• Figure 1 shows a general embodiment of an electric power supply system according to the invention.
• Figure 2 shows a particular aspect of an embodiment of a system of Figure 1.
• Figure 3 shows another view of the particular aspect of Figure 2.
• Figure 4 shows another view of the particular aspect of Figures 2 and 3.
• Figure 5 shows another view of the particular aspect of Figure 2 to 4.
• Figure 6 shows an embodiment of a propulsion engine according to the invention.
• Figure 7 shows some aspects of the complementation of the embodiment of Figure 6.
• Figure 8 shows another embodiment of a propulsion engine according to the invention.
• Figure 9 shows some aspects of implementation of the embodiment of Figure 8.
• FIG. 1 there is shown a power supply system according to a general embodiment of the invention. It comprises a machine 100 composed of a rotor 110 and a stator 120.
• the rotor 110 is connected to a mechanical arrangement 130 for its drive by a rotor of a propulsion engine.
• the rotor coils are connected to an electrical connection 140 for the power supply of electrical equipment.
• the stator coils are connected to an electrical connection 150 for the application of electrical energy, including an alternative electrical energy.
• the asynchronous machine 100 has, over a predetermined range of drive speed by the rotor of the rotor propulsion motor of the asynchronous machine, a power transfer efficiency of the stator 120 to the preferred rotor 110 with respect to the conversion efficiency.
• mechanical energy rotation in electrical energy This is achieved by design: the transformer effect is optimized for a rotational speed range, to the detriment of the torque taken.
• the rotor 110 is for example three-phase balanced coil. To do this, the machine has the same number of pairs of poles in the stator and the rotor, or has a winding that can adapt to the balanced three-phase current.
• a possible design of the system of Figure 1 uses 6 pairs of poles and a gap of 1 mm.
• a stator voltage of 120 V RMS (relative to the neutral) is applied at 600 Hz, for a supplied electrical power of 24.7 kW, while the rotor of the asynchronous machine is driven at 15 Hz.
• the voltage obtained at the rotor then has a frequency of 690 Hz, an amplitude of 108 V RMS (relative to the neutral) for a power supplied 24 kW. It can be seen that a mechanical power of 3.3 kW is taken from the rotor and that the machine generates only 4 kW of losses, essentially related to the transformer function.
• the predetermined range of drive speed by the rotor of the rotor propulsion motor of the asynchronous machine, on which a power transfer efficiency of the stator 120 to the rotor 110 is preferred over the conversion efficiency of mechanical energy of rotation in electrical energy is a range around the frequency of rotation of 15 Hz, for example the range 10 to 20 Hz, or the range 14 to 16 Hz.
• the effect of optimization is illustrated by the low value of losses (4 kW), combined with a levy on the power released by the propulsion engine which, although far from being optimized, since it has on the contrary been neglected to allow the optimization of the transformer effect, is only 3.3 kW.
• the power supplied to the electrical connection 140 is regulated by adjusting the power applied by the electrical connection 150.
• the power level required for the stator can be, under certain conditions, lower than the output power at the rotor, thanks to the power provided by the propulsion engine.
• the load can be observed through the asynchronous machine, to know its operating status.
• Power can be transmitted with a stationary rotor, the operation being then only transformer type.
• FIG. 2 shows an embodiment of the winding of a rotor or a stator of the machine 100 shown in FIG. 1.
• the same type of winding can be used both at the stator and at the rotor, but windings Different types can also be used on the stator and the rotor.
• the winding is a progressive corrugation winding, which allows to use only one conductor bar notch rotor or stator, reducing the risk of short circuit between bars.
• each pole comprises three conductive bars connected in parallel to the same phase of the voltage. phase.
• portions of the conductors 301, 302 and 303 inserted in the successive notches 201, 202 and 203 form a first pole.
• the conductors 301, 302 and 303 are oriented at a right angle all three in the same direction, and join, respectively, notches 212, 211 and 210 (that is to say that the along the periphery of the rotor or the stator, the first driver out of his slot is then the last to enter a notch).
• the portions of the conductors between the notches constituting conductor buns, unnecessary volume and mass, and the use of a progressive corrugation coil reduces the length.
• Drivers' buns 301, 302 and 303, between the notches 201, 202, 203 and 210, 2114 and 212, are arranged, in this embodiment, away from the notches, while the buns of the conductors 304, 305 and 306 between the notches 204 205, 206 and 213 and 214 are arranged near the notches.
• FIG. 3 shows end-to-end the conductors of a phase, in a variant of the embodiment of FIG. 2.
• the conductors are connected to the external electrical circuit at their ends 351 and 352.
• this figure of buns at two distances from the notches, with the sequence: distant chignon, distant chignon, near bun, near bun, distant bun.
• the first driver out of his notch is then the last to enter a notch.
• FIG. 4 the conductors of the three phases are represented in a variant of FIGS. 2 and 3.
• References 410 and 420 are used to represent the free ends of one of the three conductors. The same welding pattern is used for the other two conductors.
• the driver crosses the two portions of the same conductor performing complete turns of the periphery before following them in parallel fashion, while approaching a second of the two free ends, referenced 420, the driver follows the two portions of the same conductor performing the complete rounds of the periphery in parallel without crossing them.
• the welds near the free end with crossing are referenced 411 and 412 and the welds near the free end with crossing are referenced 421 and 422.
• FIG. 5 shows, from end to end, the conductor of a phase, and it is specified that, if there are one conductor bars per pole, FIG. 5 represents only the number of turns of conductors divided by n, for only one of the three phases.
• FIG. 6 shows a possible implementation of the invention on a propulsion motor with two counter-rotating rotors, for example an unsheathed fan.
• Alternative electricity is obtained from the electrical network of the aircraft 610, the accessory gearbox 615 (AGB for "accessory gearbox"), or the engine 620 (free turbine, first rotor or rotor AFT, or second rotor or rotor FWD).
• a generator 616 is used in the latter two cases.
• a switch 625 under the control of a control system 626 optionally allows to choose the source of electricity. It includes, if necessary, a power converter for shaping the energy for the asynchronous machines power supply.
• the electrical power is transferred from the fixed reference A to the two counter-rotating rotating marks B and C by two transformers 630 and 631 connected in parallel with each other at the output of the switch 625.
• the marks B and C are two of the rotors.
• the electric power is finally brought to the devices to be powered on the blades of these rotors, respectively referenced 650 and 651.
• Transformers 630 and 631 are electrical power supply systems as described in connection with FIGS. 1 to 5.
• FIG. 7 A variant of the embodiment of Figure 6 is shown in Figure 7, with other details of embodiment.
• the alternative electrical power (reference 625) is fed from the stator of the propulsion motor (mark A) by conductive lines 700 and 710, which for the first time includes transformer 630 and continues to rotor blades 650 of rotor 640, which for the latter includes transformer 610 and continues through the mechanical power transmission mechanism PGB (for "Power Gear Box") 720, before to reach the blades 651 of the rotor 641.
• PGB for "Power Gear Box”
• the electrical power is first transferred from the fixed mark A to the rotating mark B in parallel by a transformer 810 and, in parallel by a transformer 820, which can also be a generator 820.
• the mark B is that of the rotor FWD 640.
• the blades 650 of the rotor 640 are fed by the transformer 810.
• a transformer 830 transfers the energy supplied by the transformer or the generator 820 of the mark B to the mark C.
• the mark C is that of the rotor AFT 641.
• the blades 651 of the rotor 641 are powered by the transformer 830.
• the transformers 830 and 810, and possibly the transformer 820 are electrical power supply systems as described in connection with Figures 1 to 5.
• FIG. 9 A variant of the embodiment of Figure 8 is shown in Figure 9, with other details of embodiment.
• the alternative electrical power (reference 625) is supplied from the stator of the propulsion motor (mark A) by conductive lines 900 and 910, which for the first includes the transformer 8100 and continues to the blades 650 of the rotor 640, and which for the second includes the transformer or generator 910 and the transformer 830, and continues to the blades 651 of the rotor 641.
• Various bearings are shown in the figure to indicate the relative rotations of the various elements.
• the supply lines avoid the PGB mechanical power transmission mechanism.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Aviation & Aerospace Engineering (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
• Electric Propulsion And Braking For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=48577124

Family Applications (1)

Country Status (8)

Families Citing this family (6)

Family Cites Families (26)

• 2012
  • 2012-05-21 FR FR1254612A patent/FR2990809B1/fr active Active
• 2013
  • 2013-05-14 RU RU2014151778A patent/RU2650490C2/ru active
  • 2013-05-14 WO PCT/FR2013/051050 patent/WO2013175098A1/fr active Application Filing
  • 2013-05-14 CN CN201380026646.0A patent/CN104321957B/zh active Active
  • 2013-05-14 CA CA2873933A patent/CA2873933C/fr not_active Expired - Fee Related
  • 2013-05-14 EP EP13727287.8A patent/EP2853022A1/de not_active Withdrawn
  • 2013-05-14 BR BR112014028919A patent/BR112014028919A2/pt not_active Application Discontinuation
  • 2013-05-14 US US14/402,794 patent/US9698651B2/en active Active

Non-Patent Citations (2)

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