Classifications

• • 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
  • H02K21/20—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having windings each turn of which co-operates only with poles of one polarity, e.g. homopolar machine
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
  • E21B17/02—Couplings; joints
  • E21B17/028—Electrical or electro-magnetic connections
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
  • E21B17/02—Couplings; joints
  • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
  • F21V21/08—Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
  • F21V21/096—Magnetic devices
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
  • H02K2201/12—Transversal flux machines

Definitions

• the invention is based on a unipolar transverse flux machine according to the preamble of claim 1.
• each rotor ring has a row of teeth with the same tooth pitch that extends on the outer circumference of the rotor ring facing away from the rotor axis and one row of teeth on the inner circumference of the rotor ring that faces the rotor axis.
• Rows of teeth on each rotor ring are shifted from each other by one tooth pitch.
• the yoke pitch on the stator corresponds to the tooth pitch of an inner or outer row of teeth, so that i mer an outer tooth of one rotor ring and an inner tooth of the other rotor ring lie simultaneously under a stator yoke.
• Rotor rings and a permanent magnetic member for generating a radial magnetic flux existing in opposite directions in the rotor rings are fixed to the sides of a rotor body which are turned away from each other in the axial direction of the rotor and which is supported on the housing via rotary bearings.
• the permanent magnetic member is in each case formed by a permanent magnet ring clamped between the rotor rings, which is unipolarly magnetized in the direction of the rotor axis.
• the stator yokes of each stator module received by the housing are U-shaped and, with their yoke legs aligned parallel to the rotor axis, overlap the inner and outer rows of teeth of the two rotor rings of the rotor modules.
• each stator module which is arranged concentrically to the rotor axis, passes through the stator yokes in the base of the yoke, that is to say in the area between the ring surface of the outer rotor ring pointing away from the rotor body and the crossbar of the stator yokes.
• Platelets facing the poles of a stator yoke have opposite polarity.
• yoke elements are arranged in the stator.
• the permanent magnetic member for generating a magnetic flux running in opposite directions in the rotor rings is formed by a permanent magnet ring which is clamped between the two rotor rings and is magnetized unipolar in the axial direction of the rotor.
• a unipolar transverse flux machine has the advantage of a simple modular construction, with which any desired stringency of the machine by adding or Elimination of identically designed stator and rotor modules can be realized, that is, modularly constructed.
• module units each consisting of a stator module and a rotor module, the concentricity of the machine improves and an initially step-like behavior of the machine changes to a continuous concentricity without ripples in the torque curve. Since the total torque of the machine is the sum of the torque components of the module units, the total torque of the machine can be easily adapted to existing requirements.
• the unipolar transverse flux machine according to the invention with the features of claim 1 has the advantage of a higher static torque with the same magnet volume of the permanent magnetic member. With unchanged dimensions and the same design of the unipolar transverse flux machine compared to the known unipolar transverse flux machine described last in the previous section, the averaged torque thus increases.
• Flow guide from a hollow cylinder made of ferromagnetic Formed material that sits on the rotor shaft in a rotationally fixed manner and receives the two permanent magnet rings in a rotationally fixed manner.
• the rotor shaft is made of magnetically non-conductive material.
• the flux guide element is formed directly by the rotor shaft itself, on which the two permanent magnet rings are fixed.
• the elimination of the separate flow guide element reduces the outlay on components, although the
• the unipolar in a multi-strand embodiment, the unipolar
• Transverse flux machine in which several rotor modules are seated on the ferromagnetic rotor shaft, the rotor shaft is divided into shaft sections each extending over a rotor module, and solid disks made of magnetically non-conductive material are arranged between the shaft sections. Shaft sections and solid disks result in a torsionally rigid shaft.
• the rotor modules of the individual module units or strands of the unipolar transverse flux machine are magnetically decoupled by these magnetically insulating solid disks, so that no mutual magnetic reaction can occur.
• the axial distances between the Rotor modules are made larger than the axial width of the rotor modules.
• the optimum of the axial distances is reached when the magnetic influence between the rotor modules becomes negligible.
• FIG. 1 is a partial perspective view of a two-strand, 32-pole unipolar transverse flux machine, shown partially schematically,
• FIG. 2 shows a perspective view of a detail of a unipolar transverse flux machine modified with respect to FIG. 1, FIG.
• Fig. 3 is a diagram of the torque curve of the
• FIG. 1 The perspective view, partially cut away, of the unipolar transverse flux machine shown in FIG. 1 has a machine housing 10 with one held thereon
• the rotor 12 has a plurality of rotor modules 15 and the stator 11 has the same number of stator modules 14.
• the rotor modules 15 are mounted axially one behind the other directly on the rotor shaft 13 in a rotationally fixed manner, and the stator modules 14 are fastened axially one behind the other in a radial alignment with the associated rotor module 15 on the machine housing 10.
• the number of module units each comprising a stator module 14 and a rotor module 15 is determined by the selected stranding of the unipolar transverse flux machine, which in the exemplary embodiment in FIG.
• stator modules 14 and the rotor modules 15 and thus the individual module units are of identical design, so that the unipolar transverse flux machine has a modular design and can easily be adapted to existing requirements in terms of power and torque by adding or reducing module units.
• Module units aligned with each other and the two stator modules 14 of the two module units arranged axially next to one another in the machine housing 10 are rotated electrically by 90 °, which means half a pole pitch, i.e. in the 32-pole version of the machine a spatial offset angle in the direction of rotation of 5.625 °, o -
• the stator modules 14 arranged axially one behind the other on the stator 11 are to be electrically shifted relative to one another by an angle of 360 ° / m, in a three-strand machine with three module units, this means electrical by 120 °.
• Each rotor module 15 has two coaxial, toothed, ferromagnetic rotor rings 16, 17 and a permanent magnetic member 18 which generates a magnetic flux which runs radially in opposite directions in the rotor rings 16, 17, as indicated in FIG. 2 by the arrows 19, 20 is.
• the permanent magnetic member 18 consists of two permanent magnet rings 26, 27, each of which is surrounded on the outside by a rotor ring 16 or 17, and a flux guide element 29 which connects the two permanent magnet rings 26, 27 to one another.
• the flux guide element 29 is formed by the rotor shaft 13 made of ferromagnetic material, on which the two permanent magnet rings 26, 27 are fixed axially spaced apart.
• Each permanent magnet ring 26, 27 is radially magnetized, the direction of magnetization in the two permanent magnet rings 26, 27 being in opposite directions, as shown in FIG. 2 by specifying the north poles N and South poles S of the two permanent magnet rings 26, 27 is illustrated.
• the distance between the rotor modules 15 seated on the one-piece rotor shaft 13 can be increased to such an extent that the magnetic influence of the individual strands on one another is negligible.
• Each rotor ring 16, 17 is toothed on its outer circumference facing away from the rotor shaft 13 with a constant tooth pitch, so that the teeth 22 of the row of teeth that result from each other, each separated by a tooth gap 21, have the same angular distance from one another.
• the teeth 22 on the rotor ring 16 and on the rotor ring 17 are aligned with one another in the axial direction.
• the rotor rings 16, 17 with the teeth 22 formed thereon in one piece are laminated and are preferably composed of the same sheet-metal punched cuts which abut one another in the axial direction.
• the stator yokes 24 are arranged here such that the one yoke leg with the one rotor ring 16 and the other yoke leg with the other rotor ring 17 of the associated rotor module 15 are radially aligned, the free end faces of the yoke legs forming the pole faces of the rotor ring 16 and 17 respectively face each other with a radial gap.
• the end faces of the yoke legs have the same axial width as the rotor rings 16, 17.
• end faces of the yoke legs projecting axially or on both sides via the rotor rings 16, 17 are also advantageous.
• the yoke elements 25 are each arranged between two stator yokes 24 in the direction of rotation of the rotor 12 and are offset from the stator yokes 24 by half a yoke or yoke element pitch or a pole pitch.
• the yoke elements 25 extend parallel to the rotor shaft 13 to over both rotor rings 16, 17 and face them with the same radial gap distance as the stator yokes 24.
• the yoke elements 25 have, for example, a C-shape, each with two short limbs radially opposite one another from a rotor ring 16, 17 and a transverse web connecting them to one another, which is located on the inside of the rotor shaft 13 facing circular ring coil 23 extends parallel to the rotor shaft 13.
• alternative shapes for the yoke elements 25 can be selected, for example rectangular or trapezoidal.
• the circular toroidal coil 23 passes through the atortator yokes 24 on the base of the yoke legs and runs in between each via a yoke element 25.
• the axial width of the end faces of the legs of the yoke elements 25 is here equal to the axial width of the rotor rings 16, 17.
• the legs of the yoke elements 25 can also axially protrude beyond the rotor rings 16, 17.
• 3 is, for example, a diagram with four
• Curve a shows the profile of the static torque of the unipolar transverse flux machine according to FIG. 1
• curve b shows the profile of the static torque of a unipolar transverse flux machine as it is in the unipolar transverse flux machine according to DE 100 39 466, in which the permanent magnetic member 18th not formed by two radially oppositely magnetized permanent magnet rings 26, 27 but by a permanent magnet ring arranged between the rotor rings 16, 17 and magnetized in the axial direction of the rotor 12, with the same design.
• Curves c and d represent the course of the cogging torque of the unipolar transverse flux machine according to FIG. 1 (curve c) and according to the known unipolar transverse flux machine (curve d).
• an increase in the cogging torque can be seen.
• the two permanent magnet rings 26, 27 are not placed directly on the rotor shaft 13, but are rotatably fixed with the same axial distance from one another on a hollow cylinder 28 made of ferromagnetic material, which in turn is of the rotor shaft 13 is rotatably received.
• This hollow cylinder 28, which forms the flux guide element 29 of the permanent magnetic member 18 between the two radially oppositely magnetized permanent magnet rings 26, 27, makes it possible to dispense with a magnetically conductive design of the rotor shaft 13.
• the individual rotor modules 15, which are seated on the one-piece rotor shaft 13 made of magnetically non-conductive material, are magnetically decoupled and can be arranged closely adjacent to one another in order to achieve a small axial depth of the unipolar transverse flux machine.

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• Engineering & Computer Science (AREA)
• Geology (AREA)
• Mining & Mineral Resources (AREA)
• Life Sciences & Earth Sciences (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Fluid Mechanics (AREA)
• Mechanical Engineering (AREA)
• Environmental & Geological Engineering (AREA)
• Physics & Mathematics (AREA)
• Geochemistry & Mineralogy (AREA)
• Power Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Permanent Magnet Type Synchronous Machine (AREA)
• Iron Core Of Rotating Electric Machines (AREA)
• Permanent Field Magnets Of Synchronous Machinery (AREA)

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• 2001
  • 2001-08-16 DE DE10140303A patent/DE10140303A1/de not_active Withdrawn
• 2002
  • 2002-08-01 US US10/486,578 patent/US6888272B2/en not_active Expired - Fee Related
  • 2002-08-01 JP JP2003524094A patent/JP4085059B2/ja not_active Expired - Fee Related
  • 2002-08-01 WO PCT/DE2002/002825 patent/WO2003019756A1/de active Application Filing
  • 2002-08-01 EP EP02754468A patent/EP1421668A1/de not_active Withdrawn
  • 2002-08-01 CN CNB028205448A patent/CN100367637C/zh not_active Expired - Fee Related

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