Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K19/00—Synchronous motors or generators
  • H02K19/02—Synchronous motors
  • H02K19/10—Synchronous motors for multi-phase current
  • H02K19/12—Synchronous motors for multi-phase current characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
  • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
  • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
  • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
• • 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
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C32/00—Bearings not otherwise provided for
  • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
  • F16C32/0406—Magnetic bearings
  • F16C32/044—Active magnetic bearings
  • F16C32/0474—Active magnetic bearings for rotary movement
• • 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
• • 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
  • H02K19/00—Synchronous motors or generators
  • H02K19/16—Synchronous generators
  • H02K19/26—Synchronous generators characterised by the arrangement of exciting windings
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
  • H02K5/15—Mounting arrangements for bearing-shields or end plates
• • 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
  • H02K7/08—Structural association with bearings
  • H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor

Definitions

• the invention relates to an inductively electrically excited synchronous machine according to the preamble of claim 1.
• An inductively electrically excited synchronous machine usually has a stator and a rotor which is rotatably arranged in the stator.
• the energy is transferred to the windings in the rotating rotor by means of an energy transmitter.
• the energy transmitter has a primary coil on the stator side and a secondary coil on the rotor side, which interact with one another electromagnetically.
• an inverter on the stator side and a rectifier on the rotor side are provided.
• the energy transmitter is arranged outside of a housing of the synchronous machine and disadvantageously requires additional space.
• the object of the invention is therefore to specify an improved or at least alternative embodiment for a synchronous machine of the generic type, in which the disadvantages described are overcome.
• An inductively electrically excited synchronous machine has a stator group with a housing and a stator arranged in the housing.
• the synchronous machine has a rotor group with a shaft and a rotor which is non-rotatably connected to the shaft.
• the rotor group is arranged in the stator of the stator group so that it can rotate about an axis of rotation.
• the synchronous machine has an end shield and a bearing fixed in the end shield, the end shield axially closing the housing of the stator group and the bearing rotatably receiving the shaft of the rotor group.
• the synchronous machine has an energy transmitter with a hollow-cylindrical magnetic core. According to the invention, the magnet core is arranged radially between the bearing plate and the bearing and forms the bearing plate in some areas.
• the magnet core is arranged between the bearing plate and the bearing and can be fastened to the bearing plate and/or to the bearing in a materially bonded and/or force-fitting and/or form-fitting manner.
• the magnetic core can bear the mechanical loads occurring in the synchronous machine.
• the energy transmitter of the synchronous machine can also have other components in addition to the magnet core.
• the energy transmitter can have a primary coil, a secondary coil, a rectifier and an inverter.
• the individual components of the energy transmitter are divided into primary-side or stator-side or stationary components and secondary-side or rotor-side or rotatable components.
• the magnetic core, the primary coil and the inverter are primary-side or stator-side or stationary components.
• the secondary coil and the rectifier are there- for secondary-side or rotor-side or rotatable components.
• the primary coil and the secondary coil can interact with each other electromagnetically.
• the magnet core can encompass or surround the primary coil at least in regions and thereby strengthen the electromagnetic interaction between the primary coil and the secondary coil.
• the magnetic core can advantageously be formed from a ferritic material.
• the energy transmitter can have a reinforcing element.
• the reinforcement element can encompass or surround the magnet core on the outside at least in regions.
• the reinforcement element can be firmly connected to the magnet core in a materially bonded and/or form-fitting and/or non-positive manner.
• the reinforcement element can protect the magnet core from mechanical stress and thereby increase the service life of the magnet core.
• the reinforcing element can be formed from steel, for example.
• the reinforcement element can have at least one hollow-cylindrical section.
• the at least one hollow-cylindrical section of the reinforcement element can bear against the magnet core and be arranged facing the bearing or the bearing plate.
• the reinforcement element is C-shaped and is placed on the magnet core.
• the reinforcement element can then encompass the magnetic core on two sides which run around the axis of rotation and are coaxial to one another and on an axial side of the magnetic core which is aligned transversely to the axis of rotation.
• the magnetic core can be reinforced particularly effectively and protected against mechanical loads.
• the bearing can have an inner ring arranged in a rotationally fixed manner on the shaft, an outer ring and at least two rolling elements arranged between the outer ring and the inner ring.
• the outer ring of the bearing can be in direct contact with the magnetic core or with the reinforcing element described above.
• the bearing can be integrally and/or positively and/or non-positively connected to the outer ring with the magnet core or the reinforcement element.
• the energy transmitter can have a secondary coil running around the axis of rotation and a disk carrying the secondary coil.
• the disk can be aligned transversely to the axis of rotation and connected to the shaft of the rotor group in a rotationally fixed manner.
• the secondary coil can be arranged in an inductively interactive manner on a primary coil which is at least partially enclosed by the magnet core.
• the secondary coil can in particular be a coil lying flat on the pane.
• the secondary coil can in particular be arranged axially adjacent to the primary coil arranged in the magnetic core.
• the magnet core protrudes axially beyond the bearing on one side.
• the disk can then project radially into the magnet core in the region of the magnet core that projects axially beyond the bearing.
• the secondary coil arranged on the disc can thus be arranged on the primary coil, which is at least partially surrounded by the magnetic core, in particular axially adjacent.
• FIG. 1 shows a sectional view of a synchronous machine according to the invention
• the synchronous machine 1 shows a sectional view of an inductively electrically excited synchronous machine 1 according to the invention.
• the synchronous machine 1 has a stator group 2 with a housing 3 and a stator 4 , the stator 4 being held in the housing 3 in a rotationally fixed manner.
• the synchronous machine 1 has a rotor group 5 with a shaft 6 and a rotor 7 , the rotor 7 being connected to the shaft 6 in a rotationally fixed manner.
• the rotor group 4 is arranged in the stator group 2 so as to be rotatable about an axis of rotation RA.
• the rotor 7 is arranged radially adjacent to and spaced apart from the stator 4 so that the rotor 7 and the stator 4 can interact electromagnetically with one another.
• the synchronous machine 1 also has an end shield 8 and a second end shield 9, which close the housing 3 of the stator group 2 at the axial ends of the synchronous machine 1 transversely to the axis of rotation RA.
• the synchronous machine 1 has a bearing 10 and a secondary bearing 11 which rotatably accommodate the shaft 6 of the rotor group 5 at the axial ends of the synchronous machine 1 .
• the second bearing 11 is fixed in the second end shield 9 .
• the synchronous machine 1 has an energy transmitter 12 .
• the energy transmitter 12 has a primary coil—not shown here—and a magnet core 13 .
• the magnetic core 13 is hollow-cylindrical and encompasses or encloses the primary coil at least in regions.
• the magnetic core 13 can be formed from a ferritic material.
• the magnetic core 13 is arranged radially between the bearing 10 and the bearing plate 8 and is firmly connected to them. The magnetic core 13 thus forms the bearing plate 8 in some areas or is integrated into the bearing plate 8 .
• the energy transmitter 12 is advantageously arranged in the synchronous machine 1 in a space-saving manner.
• the synchronous machine 1 can be designed to be axially more compact and the costs of the synchronous machine 1 can be reduced.
• FIG. 2 shows a plan view of the synchronous machine 1 according to the invention.
• the magnetic core 13 is arranged between the bearing 10 and the bearing plate 8 and is in direct contact with them.
• the magnetic core 13 can be firmly connected to the bearing 10 and the bearing plate 8 in a materially bonded and/or form-fitting and/or non-positive manner.
• 3 shows a sectional view of the synchronous machine 1 according to the invention in the area of the bearing plate 8.
• the energy transmitter 12 can also have further components on the secondary side.
• the magnet core 13 projects axially outward beyond the bearing 10 and the disk 14 projects radially into the magnet core 13 .
• the secondary coil on the disc 14 can be arranged axially adjacent to the primary coil in the magnet core 13 .
• the primary coil and the secondary coil together form a transformer.
• FIG. 4 shows a sectional view of the synchronous machine 1 according to the invention in the area of the end shield 8.
• the reinforcement element 15 can advantageously be formed of steel.
• the reinforcement element 15 is C-shaped and comprises the magnetic core 13 on two mutually coaxial sides and an axial side aligned transversely to the axis of rotation RA.
• the reinforcement element 15 reinforces the magnetic core 13 made of a softer metallic material, so that the magnetic core 13 can withstand the mechanical loads better.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Motor Or Generator Frames (AREA)
• Synchronous Machinery (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=83280203

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Citations (4)

Family Cites Families (1)

• 2021
  • 2021-09-24 DE DE102021210674.9A patent/DE102021210674A1/de active Pending
• 2022
  • 2022-08-24 WO PCT/EP2022/073572 patent/WO2023046398A1/de not_active Ceased
  • 2022-08-24 CN CN202280064383.1A patent/CN117999730A/zh active Pending
  • 2022-08-24 JP JP2024518201A patent/JP2024533641A/ja active Pending

Patent Citations (4)

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