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
  • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
  • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H1/00—Toothed gearings for conveying rotary motion
  • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
  • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
  • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
  • F16H3/724—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously using external powered electric machines
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
  • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
  • F16H37/04—Combinations of toothed gearings only
  • F16H37/041—Combinations of toothed gearings only for conveying rotary motion with constant gear ratio
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H57/00—General details of gearing
  • F16H57/02—Gearboxes; Mounting gearing therein
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H57/00—General details of gearing
  • F16H57/04—Features relating to lubrication or cooling or heating
  • F16H57/048—Type of gearings to be lubricated, cooled or heated
  • F16H57/0482—Gearings with gears having orbital motion
  • F16H57/0486—Gearings with gears having orbital motion with fixed gear ratio
• • 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
  • H02K11/30—Structural association with control circuits or drive circuits
  • H02K11/33—Drive circuits, e.g. power electronics
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
  • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
  • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
  • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
• • 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
  • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
  • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
  • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
  • H02P9/007—Control circuits for doubly fed generators
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H57/00—General details of gearing
  • F16H57/02—Gearboxes; Mounting gearing therein
  • F16H2057/02034—Gearboxes combined or connected with electric machines
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H57/00—General details of gearing
  • F16H57/02—Gearboxes; Mounting gearing therein
  • F16H2057/02039—Gearboxes for particular applications
  • F16H2057/02069—Gearboxes for particular applications for industrial applications
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H57/00—General details of gearing
  • F16H57/02—Gearboxes; Mounting gearing therein
  • F16H2057/02039—Gearboxes for particular applications
  • F16H2057/02078—Gearboxes for particular applications for wind turbines
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/70—Wind energy
  • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

• the invention relates to an electromechanical system for particular variable-speed transmission of rotational energy, torque and power and a superposition gear for such a system according to the independent claims.
• the system described has a plurality of energy conversion machines coupled to a powertrain. The single ones
• Energy conversion machines can be operated by a motor or by a generator, with the speeds of the input or output shafts to which the individual machines are coupled varying.
• the electromechanical system has a powertrain including at least first, second, and third powertrain-coupled power conversion machines and a superposition gear having a planetary gear whose sun gear is coupled to the first engine through a first shaft for transmitting torque and the planetary gear at least one planetary gear is coupled via a second shaft for transmitting a torque to the second machine, wherein the third machine is designed as a three-phase synchronous machine and a ring gear of the
• Planetary gear forms a rotor of the three-phase synchronous machine.
• Such an electromechanical system which uses a three-phase synchronous machine in a differential gear for wind turbines, is known from AT 507 395 A2.
• a planetary gear has a centrally disposed, connected to a central shaft, externally toothed sun gear, at least one meshing with the sun gear and a planetary with the at least one planet in engagement befindliches Ring gear, opposite which the at least one planetary gear performs a relative movement.
• DE 103 14 757 B3 describes a drive train for transmitting a variable power with variable input speed and a substantially constant output speed. It is provided as a planetary gear superposition gear is coupled to a hydrodynamic torque converter to convert the varying speed of the rotor in a constant speed of the drive shaft of a synchronous generator.
• the superposition gear is arranged in the drive train of the wind turbine between the main gear and synchronous generator.
• the output shaft of the wind rotor is connected to the planetary gears, the sun gear via the impeller of the torque converter to the generator shaft and the ring gear to the turbine of the torque converter.
• the braking effect of the torque converter is changed by means of specifically adjustable guide vanes.
• the invention has for its object to provide a system that has a relatively simple structure is robust and Dynamic loads of the drive train minimized.
• the system should also be suitable for advantageous use in different technical fields, in particular to enable both an effective regenerative and motor operation.
• the supply of electrical energy in a power grid should be possible as effectively and largely without the use of complex electronics and other control technologies.
• the invention relates to an electromechanical system for the transmission of rotational energy, torque and power in a drive train having at least a first, a second and a third coupled to the drive train engine for energy conversion and with a planetary gear superposition gear, with the three machines in Active compound is.
• the sun gear of the planetary gear is coupled via a first shaft for transmitting a torque to the first machine and at least one planetary gear via a second shaft for transmitting a torque to the second machine.
• the third machine is designed as a three-phase synchronous machine.
• a ring gear of the planetary gear forms a rotor of the three-phase synchronous machine, which is referred to in the following description for better readability as a synchronous machine.
• the invention is characterized in that the ring gear with a housing the planetary gear is connected, and that arranged on the ring gear and / or on the housing of the planetary gear permanent magnets for exciting the three-phase synchronous machine, in particular fixed, are.
• the synchronous machine is operated as a function of the respective operating state by motor or generator, so that a braking torque or an acceleration torque is introduced into the ring gear of the planetary gear as needed.
• the suitable control of the synchronous machine takes place in an advantageous manner with the aid of drive electronics, which generates a control signal on the basis of the respective operating situation, thus taking into account in particular the rotational speeds of the sun gear and / or the at least one planetary gear or the shafts coupled to these gear wheels. For example, if the rotational speed of the shaft on the main drive side of the planetary gear is too low with respect to the required on the main output side speed, the synchronous machine can initiate a suitable acceleration torque in the ring gear.
• the ring gear is fixed by the synchronous machine in position or even that the ring gear is rotated in the reverse direction.
• the planetary gear in one or more stages.
• the planetary gear can be coupled to another gear, such as a main drive gearbox of a wind turbine or a transmission gearbox of a work or machine tool.
• the third machine is designed as a permanent magnet synchronous machine and the rotatably mounted ring gear of the planetary gear is in operative connection with the permanent magnet for exciting the synchronous machine.
• the permanent magnet synchronous machine is preferably a higher-pole synchronous machine which has more than two, in particular four, poles.
• the ring gear itself forms the rotor of the synchronous machine and the permanent magnets are arranged directly on the ring gear, in particular fixed.
• the ring gear is connected to the housing of the planetary gear and the permanent magnets arranged on the ring gear and / or the housing, in particular are fixed.
• the synchronous machine is controlled by a drive electronics for controlling the energy conversion realized in the synchronous machine.
• energy conversion is understood to be, above all, the conversion of electrical energy into rotational energy in motor operation and of rotational energy into electrical energy in regenerative operation.
• a drive electronics is provided, which is designed such that the energy conversion takes place in the synchronous machine at least temporarily as a function of the energy converted by the first and / or second machine or the respective output or recorded by these power.
• the machines are operated either as a generator or as a motor.
• the superposition gearing designed according to the invention as a planetary gearing is connected to a main drive shaft and a main drive shaft of a drive train, wherein the main drive shaft or the main output shaft is connected either to the central shaft connected to the sun gear or to the at least one planetary gear via the web Stegwelle acts.
• a motor or generator via a drive shaft or in generator mode via an output shaft is directly or indirectly connected to the sun gear.
• the at least one planetary gear or preferably a plurality of planetary gears is or are connected to the web shaft, which directly forms the output shaft during engine operation or is connected to at least one further output stage.
• the power flow rotates and the ridge wave is driven directly or indirectly and transmits torque, rotational energy and power to the at least one planetary gear.
• the drive electronics is designed such that the synchronous machine is operated at least temporarily in 4-quadrant operation. Furthermore, it is provided in a particular embodiment of the invention that the drive electronics is designed such that an air gap torque of the synchronous machine is variable depending on the provided and removed from the first and / or second machine power. With the aid of an appropriately provided adjusting device, it is possible to selectively vary the magnetic flux between stator and rotor and the power consumption or power output of the rotor of the coupled to the ring gear of the planetary gear synchronous machine.
• the planetary gear is arranged with at least one further transmission in a common oil chamber.
• the further transmission is coupled to the planetary gear and disposed between the planetary gear and the first or the second machine, and these two gears are arranged in a common oil chamber, ie in a sealed housing to the outside oil-tight.
• a particularly space-saving arrangement of planetary gear and at least one additional transmission possible, on the other hand, the number of in the overall system or overall drive train provided sealing surfaces and thus minimizes the number of seals and maintenance points.
• the first or the second machine is designed as a three-phase asynchronous machine connected to a power supply. It is advantageous in this context, when the first or the second machine is connected to a power grid.
• the three-phase asynchronous machine provided for this purpose can operate in both motor and generator mode.
• a three-phase asynchronous generator converts the power output by a wind rotor or a wind turbine into electrical energy and feeds it into the connected power grid.
• Essential for the drive train according to the invention is in this case that despite the speed changes on the drive side, so the side of the drive train on which the wind rotor is located, the output side, and thus on the generator side, located generator shaft rotates with an at least approximately constant speed.
• the generator shaft must be synchronized with the mains frequency via the number of pole pairs.
• the first machine is a three-phase asynchronous motor which drives a machine tool or a working machine, in particular in mining, via a drive train with the superposition gearbox designed according to the invention.
• changes in load on the working machine side which are caused, for example, by changes in the loads on the tool, are initiated in a targeted manner via the superposition gear and in particular the ring gear in the synchronous machine coupled thereto.
• a smooth and controlled start-up of a work machine can be realized by the output power in the drive train controlled by the movement of the ring gear driven synchronous machine, which then works as a generator, is converted into electrical energy at the start of the induction motor, which again in the connected network is delivered.
• the individual components of the system such as motor, frequency converter and permanent-magnet synchronous machine, are designed to be explosion-proof or impact-resistant.
• the first or the second machine as an internal combustion engine or turbomachine, for example as a gas turbine, is executed. It is essential in each case that via the first and / or the second machine, a torque or a power is coupled into the drive train or absorbed by the drive train.
• a torque or a power is coupled into the drive train or absorbed by the drive train.
• the electromechanical system according to the invention with superposition gearing for transmitting rotational energy, torque and power for a vehicle drive train, in particular the drive train of a vehicle with hybrid drive.
• a motor in particular an internal combustion engine
• the first machine wherein such an engine can generally be a diesel, petrol or gas engine.
• a turbine for driving a vehicle.
• the drive train of a vehicle is configured such that the internal combustion engine or the turbine preferably runs in an energy-optimal range, while the speed adjustment of the drive shaft of the vehicle is at least partially via the coupled to the ring gear of the planetary gear permanent magnet synchronous machine.
• the vehicle advantageously located in the vehicle electrical energy storage by the synchronous machine whose rotor is formed by the ring gear of the planetary gear or connected to the ring gear planetary gear, charged.
• the invention also relates to a superposition gear with a planetary gear and with means for the targeted distribution of an introduced into the planetary gear torque.
• the planetary gear has a centrally located sun gear and at least one planetary gear meshing with the sun gear, of which the sun gear is connected to a first shaft for transmitting torque and the at least one planetary gear is connected to a second shaft for transmitting torque.
• the planetary gear has a rotatably mounted ring gear, in which the means for the targeted division of the introduced into the planetary gear torque in response to a control signal, which is preferably generated due to a current operating situation of a drive electronics, a braking or acceleration force.
• the means for the targeted distribution of an introduced into the planetary gear torque have a synchronous machine whose rotor is formed by the ring gear or a member connected to the ring gear.
• the superposition gearing according to the invention is characterized in that the ring gear is connected to a housing of the planetary gearing, on which permanent magnets are arranged.
• the synchronous machine is excited by permanent magnets which are indirectly or directly connected to the ring gear.
• the ring gear may be connected to a housing of the planetary gear, are attached to the permanent magnets.
• the permanent magnets can in this case on the Housing of the planetary gear and / or the outer wall of the ring gear to be placed or embedded therein.
• the inventively designed electromechanical system for the transmission of rotational energy, torque and power and suitable for the realization of a variable speed drive train to be operated superposition gear is characterized in that the ring gear is connected to a housing of the planetary gear, and that on the ring gear and / or on the housing the planetary gear permanent magnets are arranged to excite the three-phase synchronous machine.
• the ring gear and / or the housing of the planetary gear form the rotor of a synchronous machine.
• it is a permanent magnet synchronous machine, wherein the permanent magnets are attached in particular to the ring gear and / or connected to the ring gear housing of the planetary gear.
• powers are introduced or removed in the drive train as a function of different load cases by the synchronous machine. If the synchronous machine receives power from the drive train, electrical energy is generated and fed into the connected power grid.
• the power of the main driveline and the synchronous machine it is possible for the power of the main driveline and the synchronous machine to add or subtract.
• a part of the power transmitted by the main drive train or the torque is absorbed and removed by the synchronous machine, whereby due to the use of a suitable drive electronics stepless control and thus a continuous speed adjustment from the speed "0" in the motor and generator direction possible is. Only part of the power is supplied via the drive electronics, which leads to corresponding savings in the electronics.
• Figure 1 powertrain of a wind turbine
• FIG. 1 shows an electromechanical system according to the invention for transmitting rotational energy, torque and power, which is used as the drive train of a wind power plant.
• the system is designed for variable-speed transmission of rotational energy, torque and power.
• the first and second energy conversion machines 2, 3 are in this case an asynchronous generator 2 and a wind rotor 3, both of which are connected to each other via the main drive train.
• the wind rotor 3 of the wind power plant is connected to the asynchronous generator 2 via a rotor output shaft 14, a main transmission 12 and a superposition gear 1 connected in series therewith, designed as a planetary gear 7.
• the asynchronous generator 2 is connected to the power grid and converts the introduced by the wind rotor 3 in the drive train power into electrical energy. It is essential here that the wind rotor 3 and thus the rotor output shaft 14 rotate at varying speeds, while the speed of the generator shaft is at least almost constant.
• the generator shaft must be synchronized with the mains frequency via the number of pole pairs.
• the sun gear 8 of the planetary gear 7 is connected to the drive shaft 5 of the asynchronous generator 2.
• the planetary gears 8 revolving around the sun gear 8 are connected via the web, the web shaft 6 connected thereto and via the main gear 12 at least indirectly to the rotor output shaft 14 and the rotor 3 of the wind power plant.
• the planet gears 9 also move the ring gear 10 of the planetary gear 7 or are driven by the ring gear 10.
• the ring gear 10 is in turn connected to the housing 15 of the planetary gear 7, wherein the ring gear 10 and the housing 15 are rotatably mounted.
• the synchronous machine 4 is controlled by a drive electronics 13 with frequency converter 16 and operated in such a manner depending on the operating situation that needs transmitted power from the synchronous machine 4 to the ring gear 10 or received by the ring gear 10. In this way it is possible, with the aid of the synchronous machine 4 as required to initiate a braking torque or an acceleration torque in the ring gear 10 and thus in the connected to the planetary gear 7 drive train. At low wind speeds and thus low power of the asynchronous generator 2 is blocked.
• the power generated by the wind rotor 3 is introduced in this case via the rotor output shaft 14, the main gear 12, the web shaft 6, the planetary gears 9 and the ring gear 10 in the synchronous machine 4, so that they are operated as a generator and the generated electrical energy via the drive electronics thirteenth is fed directly into the connected power grid.
• the rotational speed of the wind rotor 3 has approximately reached the nominal rotational speed of the generator shaft 5 of the asynchronous generator 2, its brake is released and the permanent magnet synchronous machine 4 generates an additional rotation on the generator shaft until the phase angle and rotational frequency correspond to the values present in the connected network and the generator 2 can be switched directly to the network.
• the permanent-magnet synchronous machine 4 is operated such that it holds only the housing 15 and the associated ring gear 10 of the planetary gear 7. In this operating state, the permanent-magnet synchronous machine 4 neither outputs power into the connected power network, nor does it absorb power to a significant degree from the power grid. This means that over a wide range, the power of the drive train with the help of the constant speed operating asynchronous generator 2 can be fed at the same time sinusoidal voltage and current waveform in the connected power grid. But it is also possible to completely stop the permanent magnet synchronous machine in this speed range of the system when the ring gear 10 is held by a suitable braking device.
• the additional power provided thereby in the drive train is converted by the rotation of the running as a rotor of the synchronous machine 4 ring gear 10 into electrical energy via the drive electronics 13 in the connected network is fed.
• stronger wind gusts can be additionally compensated by an adjustment of the air gap torque of the permanent-magnet synchronous machine 4 shown in FIG.
• a particular advantage of the shown with the drive train of a wind turbine electromechanical system with superposition gear 1 is that gusts of wind lead to an additional acceleration of the rotor of the synchronous machine 4 and thus to increased power production without the overall system is mechanically overloaded.
• the described system behavior is thus similar to that of wind turbines connected to double-fed asynchronous generators, but avoids their disadvantages, such as the use wear-resistant carbon brushes and the lack of support of the connected power grid.
• FIG. 2 the use of an inventively designed electromechanical system with superposition gear 1 for transmitting torque, rotational energy and power in a drive train of a work machine, as used, for example, in mining, is shown.
• the system is designed for variable-speed transmission of torque, rotational energy and power.
• the drive train according to FIG. 2 has an asynchronous motor forming the first machine for energy conversion 2, which is directly connected to the power supply, and the working machine, which according to this embodiment represents the second power conversion machine 3 coupled to the main drive train. If a corresponding powertrain is used in mining or in other potentially explosive areas, all parts of the plant, in particular the electric motors and generators used, must be explosion-proof or flame-proof.
• asynchronous machine 2 While the asynchronous machine 2 is connected to the grid, at the same time in the air gap of the pe rm a nte excited n synchronous machine, which represents the third coupled to the drive train machine for energy conversion 4, built by the drive electronics 13, a small counter-torque, so that as a runner
• the synchronous machine 4 executed ring gear 10 is rotated and introduced by the asynchronous machine 2 in the drive train power is fed in large part via the synchronous machine 4 and the drive electronics 13 in the form of electrical energy in the connected power grid.
• the power output by the asynchronous motor 2 is almost completely fed back into the power grid via the synchronous machine 4.
• pulse-like overloads of the drive train are almost completely avoided.
• Overload clutch can be achieved.
• An overload situation for example, by a blockade of the working machine 3, would cause an acceleration of the rotor of the synchronous machine 4 and feed the additional power generated by the asynchronous machine 2 in the drive train directly back into the grid, without the other components of the drive train are mechanically overloaded. Since only a portion of the power is passed through the drive electronics 13, this can be adapted according to the performance and manufactured comparatively inexpensively.
• third machine three-phase synchronous machine first shaft: drive or output shaft
• second shaft drive or output shaft

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Mechanical Engineering (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
• Wind Motors (AREA)
• Structure Of Transmissions (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=64900958

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• 2017
  • 2017-12-21 DE DE102017130880.6A patent/DE102017130880A1/de active Pending
• 2018
  • 2018-12-20 EP EP18826686.0A patent/EP3729617A1/de active Pending
  • 2018-12-20 JP JP2020554587A patent/JP7341158B2/ja active Active
  • 2018-12-20 WO PCT/EP2018/086360 patent/WO2019122224A1/de unknown
  • 2018-12-20 US US16/954,900 patent/US20200403481A1/en not_active Abandoned

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