KR20020033722A - Unipolar Transverse Flux Machine - Google Patents

Abstract

In the unipolar transverse flux generator, in order to achieve a modular construction suitable for manufacturing technology, the stator 11 and the rotor 12 include the same number of identical stator modules 14 and rotor modules 15, The rotor modules 15 are arranged in a straight line with each other on the rotor shaft 13, and the stator modules 14 in the housing 10 are rotated with each other by a predetermined rotation angle. The angle of rotation is 90 ° electric in the two stator modules 14, 360 ° / m electric in the m stator modules 14, and m is an integer greater than two. Each stator module 14 comprises a ring coil 23 coaxially disposed on the rotor shaft 19, a U-shaped stator yoke 24 overlapping it and a magnetic return member 25 disposed therebetween. . Each rotor module 15 consists of two rotor rings 16 and 17 having an external serrated shape and a permanent magnet ring 18 magnetized in a single pole in the direction of the rotor axis 19 interposed therebetween. .

Description

Unipolar Transverse Flux Machine

In machines of the type known as Hybrid Synchronous Machines comprising transverse fluxes in EP 0 544 200 A1, the toothing of each rotor ring is determined by the rotation of the rotor ring opposite the rotor axis. Tooth rows spanning the outer circumference, tooth rows spanning the inner circumference of the rotor ring towards the rotor axis, and tooth rows having the same tooth pitch. In this case, the tooth rows are shifted from each rotor ring by tooth pitch. The yoke pitch of the stator corresponds to the tooth pitch of the inner or outer tooth rows such that the outer teeth of the first stator ring and the inner teeth of the second stator ring always lie under the stator yoke at the same time. Two rotor modules each consisting of two rotor rings comprising an axially unipolar magnetized magnet in between are clamped to the sides of the rotor body opposite each other in the axial direction of the rotor, The rotor body is supported in a housing on a pivot bearing. The stator yoke of each stator module received by the housing is U-shaped and overlaps the inner and outer tooth rows of both rotor rings of the rotor module by yoke arms disposed parallel to the rotor axis. overlapping). Circular ring coils in each stator module arranged concentrically with the rotor shaft pass through the stator yoke at the bottom of the yoke, ie between the surface of the outer rotor ring guided by the rotor body and the cross bridge of the stator yoke. Placed in the area.

Transverse flux generators in which permanent magnets are excited are known from Michael Bork, "Entwicklung und Optimierung einer fertigungsgerechten Transversalflussmaschine" (Paper 82, RWTH Aachen, Shacker publisher Aachen, 1997, page 8 ff). The stator winding wound in a circle is surrounded by a U-shaped yoke made of soft iron, which is arranged spaced apart from the double pole pitch in the direction of rotation. The open end of the U-yoke is disposed towards the air gap between the stator and the rotor and forms the pole of the stator. A permanent magnet miniature plate is arranged opposite the open end such that the two miniature plates opposite the poles of one stator yoke have opposite polarities. In order to short-circuit the permanent magnets which are temporarily located between the poles of the stator during rotor rotation and do not have ferromagnetic return characteristics, a magnetic return member is arranged in the stator. This prevents the magnetic flux of the permanent magnet from dispersing through the yoke arm and the ring coil, and the effect of the continuous stator flux is reduced by the weakening of the stator flux. Therefore, the power of the machine is surely increased by the magnetic return member.

The present invention relates to a unipolar transverse flux generator according to the preamble of claim 1.

1 is a schematic partial perspective cross-sectional view of a monopole transverse flux generator device having 32 poles, consisting of two lanes;

2 is a schematic plan view of a module unit of a monopole transverse flux generator device having eight poles.

3 is a cross-sectional view taken along line III-III of FIG. 2.

4 and 5 are plan views schematically showing the eight-pole unipolar transverse flux generator device divided into two different rotational positions of the rotor, each consisting of two lanes to illustrate the function.

6 is a current supply diagram of a stator of two module units of a single pole transverse flux generator consisting of two lanes.

7 is a diagram of the moment curve divided into two rotor modules and the total moment curve of the rotor shaft.

8 is a sectional view of a module unit including a modified stator winding.

9 is an exploded view of a housing containing one stator module for a single pole transverse flux generator having 32 poles, consisting of one lane;

10 is a plan view of a stator yoke for use in the housing of FIG.

FIG. 11 is a plan view of two stator yokes in line in the axial direction while being coupled to each other for a monopole transverse flux generator consisting of two lanes. FIG.

12 is a plan sectional view of a bearing shield to be secured to a housing for a rotating bearing of the rotor shaft.

13 is a simplified cross-sectional view of a module unit of a monopole transverse flux generator having sixteen poles implemented in the form of a hollow shaft.

An advantage of the monopolar transverse flux generator according to the present invention is that it has a simple structure formed in a modular manner, whereby a predetermined lane of the machine is added or omitted by the same formed stator and rotor unit. Can be implemented. That is, it can be formed in a modular manner. The rotation of the machine is improved by increasing the number of module units each consisting of one stator module and a rotor module, and characteristics similar to the initial stepwise switching of the machine are ignored in the continuous rotation without waves in the moment curve. Since the total moment of the machine is the sum of the amount of moments of the module unit, the total moment of the machine can be adapted without any problem to existing requirements in a simpler way.

Unlike conventional lateral flux generators, the advantage of the unipolar lateral flux generator according to the present invention is that the simple unipolar magnetization and the simple structure of the rotor are achieved by reducing the number of individual permanent magnets. The magnetic flux generated in the stator windings first flows through the teeth of the rotor ring, which are no longer permanent magnets, and terminates through the magnetic return member, thereby making the teeth more useful. As the property of the magnetic flux guide is improved, the total amount of dispersed magnetic flux is reduced. The magnetic return member is also used to generate opposite poles of the stator, whereby the same number of poles are provided to the stator and the rotor. A high current density in the ring coil can be achieved by allowing the ring coil, in which the sections between the outer aligned stator yokes occupy a relatively large surface, can be cooled well.

By means of the measures carried out in the dependent claims, suitable improvements and improvements of the unipolar transverse flux generator set forth in claim 1 are possible.

According to a suitable embodiment of the invention, the magnetic return member has a C-shape comprising two short arms each facing radially with respect to one rotor ring and a cross bridge connecting the arms with each other, The bridge extends parallel to the rotor axis at the inner face of the ring coil formed in a circle towards the rotor axis.

According to an alternative embodiment of the invention, the magnetic return member is formed identically to the stator yoke, each of which has two long arms facing radially opposite one stator ring and parallel to the rotor axis while connecting the arms with each other. It has a U-shape with an extending cross bridge. The ring coil of the stator module is in the form of a point symmetrical curvature in the radial plane with respect to the rotor axis, whereby the ring coil successively alternates between the yoke arms of the stator yoke, the outer side of the magnetic return member opposite the rotor axis It is formed to extend beyond the face. This has the advantage that the same tool can be used for the yoke and the magnetic return member, whereby a larger number of parts can be produced by the same tool. The ring coil may be provided in a wave form relatively simply.

According to a suitable embodiment of the present invention, each stator module is housed in a housing consisting of two half shells, the two half shells being identically formed, lying up and down on each other in mirror symmetry, being in axial alignment with each other. Radial grooves for inserting the stator yoke and the magnetic return member, and grooves for receiving ring coils facing mirror-symmetrically and disposed concentrically with the housing axis. This ensures that the magnetically supported stator structure is achieved by the same parts and simple assembly techniques, which assembly technique is best suited for highly automated mass production. The exact positioning of the stator modules (stator yokes, magnetic return members, ring coils) and the ability to be magnetically supported and retained are not limited to the individual stationary modules, but are also used together for the positioning of additional stator modules, and they are used for power or moment It is also used to convey.

According to a suitable embodiment of the invention, each half shell has a lattice structure comprising an inner ring and an outer ring formed concentric with the inner ring. The two rings are integrally joined to each other by a radial bridge. Radial grooves for receiving the magnetic return member are formed in the inner ring, while radial grooves for receiving the stator yoke extend over the inner ring, the radial bridge and the outer ring. This lattice structure, including openings lying between the radial bridges, is intensively transferred from the heat activated magnetic and electrical stator magnetic return members to the refrigerant air, thereby enabling heat to be intensively released to the environment. .

According to a suitable embodiment of the present invention, the stator yoke and the radial groove that receives it are shaped and sized so that the two half shells in the stator yoke inserted into the radial groove are fixed without moving in the radial and axial directions with each other. Correspond to each other in The stator yoke thus has two functions. On the one hand, as a magnetic flux guide that engages and accurately positions the half shell and on the other hand as a mechanical clamp.

To implement the mechanical clamp function, the stator yokes each comprise one protruding hook on each side of its cross bridge, in accordance with a suitable embodiment of the invention, the hooks being both half shells in the stator yoke inserted into the radial grooves. Positively overlap the backside opposite the radial groove of the radial bridge within.

The rotor module is disposed on the rotor shaft in a straight line in the axial direction, the stator modules are rotated by a predetermined angle with each other, the angle being 90 ° electric when implemented in two lanes, m lanes Two radial directions, spaced apart from each other, from the outer surface of the half shell opposite the radial groove, when the monopole transverse flux generator is implemented with multiple lanes when m> 2. A recess is formed in the ring section of the outer ring of the half shell extending into the radial bridge, the width of the radial recess corresponding to the width of the protruding hook in the circumferential direction, the radial depth of which is the protruding hook Corresponds to the axial depth of the root of. In order to place two identical half shells up and down in mirror symmetry, a first radial recess formed in the ring section is disposed displaced by a predetermined angle with respect to the radial groove for the subsequent stator yoke, and the second radial recess Is displaced by the same predetermined angle with respect to the radial groove for the preceding stator yoke. Protruding hooks of adjacent stator modules are inserted into one of the radial recesses per ring section, ensuring the required angle of rotation deviation between adjacent stator modules.

In an alternative embodiment of a machine implemented with multiple lanes, the stator module is arranged in a straight line in the axial direction, while the rotor module is rotated by an angle equal to the predetermined angle defined above and placed on the rotor shaft. . In this embodiment of a machine consisting of multiple lanes, the radial recess in the outer ring described above is omitted, and the stator yoke of the stator module lying adjacent to each other in the axial direction is connected to the bridge extending axially in its cross bridge area. Are connected to each other by The two stator yokes lying on the outside of the connected stator yokes each have hooks protruding from the cross bridges on their outer sides, the hooks of the radial bridges in the two half shells in the stator yokes inserted in the radial grooves. Overlap the back side opposite the radial groove. Stator yokes connected to each other by bridges interposed therebetween are suitably implemented as integral punching parts.

The invention is explained in detail below by means of the embodiments shown in the drawings.

The unipolar transverse flux generator, shown differently in different side and cross-sectional views in the drawing, includes a housing 10 having a stator 11 fixed to the housing and a rotor 12 passing through the stator 11, wherein The rotor is rotationally fixed on the rotor shaft 13 supported in the housing 10. The rotor 12 includes a plurality of rotor modules 15, and the stator 11 includes the same number of stator modules 14. The rotor module 15 is disposed in rotational direction directly in the axial direction and directly on the rotor shaft 13, and the stator module 14 is axially continuous in a radial direction relative to the associated rotor module 15. 10) is fixed. The number of module units each comprising one stator module 14 and one rotor module 15 is determined by the selected lane of the unipolar transverse flux generator, wherein the unipolar transverse flux generator is divided into two in the above-described embodiment. It consists of lanes and therefore contains two modular units. However, the unipolar transverse flux generator may also consist of one lane or three or multiple lanes. The stator module 14 and the rotor module 15 and the module unit are formed in the same manner, so that the unipolar transverse flux generator has a modular structure and is related to output and torque by increasing or decreasing the module unit. It can be applied to existing needs without any problem.

The rotor module 15 consists of two coaxial, serrated ferromagnetic rotor rings 16, 17, the ferromagnetic rotor rings being disposed on the rotor shaft 13, between the rings a permanent magnet. The ring 18 is fixed and the permanent magnet ring is magnetized to a single pole in the axial direction, ie in the direction of the rotor or housing axis 19. In FIG. 3, for example, magnetization of the permanent magnet ring 18 is provided, and the magnetic flux 20 generated by the permanent magnet ring 18 is shown in broken lines. In order to optimize the distributed total flux propagation and the use of the improved permanent magnet ring 18, the ring-shaped front portion of the permanent magnet ring of each one axial direction on the side of the rotor rings 16, 17 facing each other It is received in the central groove 29 or 30. Each rotor ring 16, 17 is toothed by a constant tooth pitch around its outer circumference away from the rotor shaft 19, so that each of the provided teeth rows 22 are separated from each other by one tooth 21. ) Have the same rotation angle intervals. The teeth 22 lie in line with one another in the axial direction at the rotor ring 16 and the rotor ring 17. The rotor rings 16, 17, including the teeth 22 formed integrally, are stacked and consist of the same thin punching sections, which are suitably arranged side by side without gap in the axial direction.

The stator module 14 which concentrically surrounds the rotor module 15 at radial intervals has a U- overlapping ring coil 23 and ring coil 23 arranged coaxially with respect to the rotor axis 19. And a stator yoke 24. Similarly, the laminated stator yoke 24, in which the thin film packet is composed of a punched thin film, is fixed here to the housing 10 which includes a yoke pitch corresponding to one of the tooth pitches in the rotor module 15. The yokes have the same rotation angle spacing as the teeth of the rotary rings 16, 17. The stator yoke 24 here comprises a first yoke arm 241 each comprising a first rotor ring 16 and a second yoke arm comprising a second rotor ring 17 of the assigned rotor module 12. 242 are arranged so that they lie in a straight line in the radial direction, and the free front portions 244 of the yoke arms 241,242 forming the polar faces face the rotor rings 16 or 17 at radial gap intervals (FIG. 1 and FIG. 3). In an embodiment the front portion 244 has the same axial width as the rotor rings 16, 17. Suitably the front portions 244 of the yoke arms 241 and 242 protrude axially on one or both sides over the rotor rings 16 and 17. One magnetic return member 25 is disposed between the stator yokes 24 continuously placed in the rotational direction of the rotor 12. Similarly, the stacked magnetic return members 25, manufactured as thin film packets, have the same rotation angle spacing as the stator yoke 24, and are displaced by a half yoke pitch or pole pitch τ relative to the stator yoke 24. Is placed. The magnetic return member 25 extends up to two rotor rings 16, 17 parallel to the rotor axis 19, with respect to the rotor ring at the same radial gap spacing as the stator yoke 24. Face to face The width of the magnetic return member 25 measured in the rotational direction is approximately the same size as the width of the stator yoke 24 when measured in the rotational direction, while the teeth of the rotor rings 16 and 17 measured in the rotational direction. The width of 22 is smaller than the pole pitch τ.

As can be seen in FIG. 2, the width of the teeth 22 of the rotor rings 16, 17, denoted by the stator tooth width b _ZR , is the stator yoke 24 and the magnetic stator, denoted by the stator tooth width b _ZS . It is set much larger compared to the width of the return member 25 and more precisely the ratio of the rotor tooth width b _ZR to the stator tooth width b _ZS is greater than 1 and less than 2. In this case the upper limit is suitably kept low, for example selected at 1.5 or less. If the stator yoke 24 and the magnetic return member 25 are not precisely displaced by the pole pitch τ, and the spacing of the pole pitches τ is different, an improved machine such as, for example, the waveform of the moment wave is flattened. Properties can be achieved.

In the embodiment according to FIGS. 1 to 5, the magnetic return members 25 each have two short arms 251, 252 radially opposite to one rotor ring 16, 17 and one which couples the arms together. Having a C-shape with cross bridge 253, the cross bridge extends parallel to the rotor axis 19 at the inner surface of the ring coil 23 formed in a circle towards the rotor axis 19. . This formation of the magnetic return member 25 and the stator yoke 24 allows the circular ring coil 23 to pass through the stator yoke 24 at the bottom of the yoke arm, with one magnetic return member 25 therebetween. Extend past). Here the axial width of the front portion 254 of the arms 251, 252 is equal to the axial width of the rotor rings 16, 17. However, arms 251 and 252 may also project above rotor rings 16 and 17 in the axial direction.

As shown in perspective view in FIG. 1 and schematically in FIGS. 4 and 5, in a single-pole transverse flux generator implemented in two lanes, it is arranged on the rotor shaft 13 adjacent in the axial direction of the two module units. The two rotor modules 15 are arranged in line with each other, and the two stator modules 14 arranged axially adjacent within the housing 10 of the two module units rotate each other by 90 ° electric, which is Corresponds to 1/2 of the pole pitch τ. This deviation corresponds to an angle of rotation of 22.5 ° in the machine implemented with the eight poles shown in FIGS. 4 and 5, and to a deviation angle in the direction of rotation of 5.625 ° in the machine implemented with the 32 poles shown in FIG. Corresponds. Alternatively, the two stator modules 14 may be arranged in line with each other in the axial direction, and the rotor modules 15 arranged on the rotor shaft 13 may be rotated with each other by the 90 ° electric. .

The function of the machine is described below with reference to FIGS. 4 to 7 as a motor in an operating mode. In this case the machine consisting of two lanes in FIGS. 4 and 5 is schematically shown in a plan view, in which the stator module 14 of the module unit lying behind the module unit in front of it is shown enlarged in diameter for clarity. Two rotor modules 15 of the module unit, which are rotationally arranged on the rotor shaft 13 and form the rotor 12, are arranged in a line with each other, thereby rotating the rotary module of the module unit that is in front of the plan view ( Only 15) can be seen. 4 and 5 show the same view of the machine divided into two different rotating parts of the rotor 12. 6 shows a current supply diagram of two ring coils 23 divided into two stator modules 14 according to the rotation angle θ of the rotor 12. A current is supplied to each ring coil 23 in a dipole. That is, the positive current pulse and the negative current pulse are alternately supplied, for example, at the same amplitude, and the current pulses are phase shifted from each other by 90 ° in the two ring coils 23 of the stator module 14.

In FIG. 4, a positive current pulse is supplied to the ring coil 23 at the rotational position of the rotor 12 having the rotation angle θ1. The instantaneous current direction flowing in the ring coil 23 is indicated by the arrow 26 assigned to the ring coil 23 in FIG. 4. The current is drawn from the stator yoke 24 and the rotor rings 16 and 17, as shown by arrows 27 for the stator yoke 24, the teeth 22 and the magnetic return member 25 in FIG. 4. The stator magnetic flux 27 is generated through the teeth 22 and the magnetic return member 25. In this case the stator flux 27 extends radially in one yoke arm 241 against the tooth 22 opposite, and the magnetic return member 25, the second yoke arm 242 and the stator yoke 24. Termination via cross bridge 243 (not shown here). As shown in FIG. 3, magnetic flux 20 directed radially outward in rotor ring 16 and radially inward in rotor ring 17 is indicated by arrows 20 in FIGS. 4 and 5. Is indicated by. By the magnetic flux curve shown, the magnetic flux 20 flows in the opposite direction to the stator flux 27 in the region of the stator yoke 24 and in the same direction as the stator flux 27 in the region of the magnetic return member 25. It can be seen that. Thus, the teeth 22 are pushed by the stator yoke 24 and attracted by the magnetic return member 25, so that the rotor 12 is rotated by a predetermined angle in the direction of the arrow 27. As shown in FIG. When the current is equally supplied to the ring coil 23 phase shifted by 90 ° in the second stator module, the same process proceeds, and the rotor 12 is rotated by the same angle of rotation, so that the rotor rotates as a whole. Rotated by an angle θ ₂ (FIG. 5). The current direction of the current pulse flowing through the ring coil 23 is now reversed, which is indicated by the arrow 26 of FIG. 5 assigned to the ring coil 23. In the unchanged magnetic flux 20, the stator flux is changed in the manner shown by arrow 27 in FIG. 5. The teeth 22 of the rotor 12 are thus attracted by the stator yoke 24, pushed by the magnetic return member 25, and the rotor 12 continues to move in the same direction of rotation 28. . After being phase shifted by 90 °, the current pulse supplied to the ring coil 23 in the second stator module 14 is switched, and the same process continues. As shown in the current supply pattern of the two stator modules 14 in FIG. 6, the above-described process is continued for the entire rotation angle (θ = 360 °) of the rotor 12, whereby the rotor 12 rotates. do.

In FIG. 7, the torque in contact with the rotor shaft 13 is shown according to the rotation angle θ of the rotor 12. The two top diagrams show the curve of the torque proportionally supplied by each of the two module units. The lower diagram of FIG. 7 shows the total torque that can be accommodated in the rotor shaft 13, which is obtained by the sum of the individual moments generated by the two module units. As can be seen in FIG. 7, the torque M varies with the rotation angle θ, thereby providing an unwanted wave in the torque curve. This wave is not noticeable when the pole number of the machine is increased on the one hand and the number of module units and the number of lanes on the other hand is increased. In this case the machine implemented with the 32 poles shown in FIG. 1 proves to be suitable for electrical and manufacturing techniques.

The machine with two lanes described in the embodiment can be implemented with two or more lanes. If the number of module units arranged spatially parallel to the number m of lanes comprising the same rotor module 15 arranged on the common rotor shaft 13 is an integer greater than 2, then in the stator 11 The stator modules 14 arranged continuously in the axial direction can be moved from one another by 360 ° / m electric angle, and in a machine consisting of three lanes comprising three module units, i.e. by 120 ° electric.

In the embodiment of the unipolar transverse flux generator according to FIGS. 1 to 5, the ring coil 23 is embodied in a circle and is arranged to be concentric with the rotor shaft 19. This requires different structural formation of the stator yoke 24 and the magnetic return member 25. As shown in perspective cross-sectional view in FIG. 8, in an alternative embodiment of the module unit, the magnetic return member 25 ′ is formed identically to the stator yoke 24. The stator yoke 24 is only shown here schematically, for example as shown in FIGS. 4 and 5, the proportions do not correspond to the proportions of the teeth 22 of the rotor rings 16, 17. Like the stator yoke 24, the magnetic return member 25 ′ combines the arms with two long arms 251 ′ and 252 ′ facing radially relative to the rotor ring 16 or 17, respectively. , U-shape comprising a cross bridge 253 ′ extending parallel to the rotor axis 19. Thus, the ring coil 23 ', which penetrates the stator yoke 24 on the one hand and passes over the cross bridge 253' of the magnetic return member 25 'to form the stator flux, is radiated. By being formed in a point-symmetrical curvilinear form with respect to the rotor axis 19 in the directional plane, the ring coil on the one hand has an inner face of the cross bridge 243 of the stator yoke 24 facing the rotor axis 19. On the other hand, it extends beyond the outer surface of the cross bridge 253 'of the magnetic return member 25' opposite the stator axis 10.

Each stator module 14 described above is embodied as a magnetically supported structure and is accommodated in a housing 30 consisting of two half shells 31, 32. As can be seen in the exploded view of FIG. 9, the two half shells 31, 32 are formed identically and are placed on top of each other in mirror symmetry. Each half shell 31, 32 has a lattice structure comprising an inner ring 33 and an outer ring 34 concentrically formed with the two rings integrally with one another by a radial bridge 35. Combined. In the half shells 31 and 32 there is a radial groove 36 for receiving the stator yoke 24, which extends across the inner ring 33, the radial bridge 35 and the outer ring 34 on the one hand. A radial groove 37 is formed for the insertion of the magnetic return member 25, which, on the other hand, extends only over the inner ring 33. The number of radial grooves 36, 37 corresponds in total to the number of stator magnetic return members (stator yoke and magnetic return member), and is 32 in the embodiment of FIG. 9 for a single pole transverse flux generator consisting of 32 poles. In this case, the width of the radial grooves 36, 37 corresponds to the thickness of the stator yoke 24 or the magnetic return member 25, and the axial depth of the radial grooves 36, 37 is the stator yoke 24 or It is slightly larger than half of the axial width of the magnetic return member 25. The two half shells 31, 32, which are placed up and down with each other with radial grooves 36, 37, are in mirror symmetry provided to accommodate the ring coil 23 of the stator module 14 (FIG. 1). Opposite, it comprises a groove 39 arranged to be concentric with the housing shaft 38. In this case, the groove 39 is formed in the radial bridge 35 so that the ring coil 23, not shown in FIG. 8, is an air flow opening surrounded by the inner ring 33, the outer ring 34 and the radial bridge. Extending beyond 40, the best heat dissipation of the ring coil 23 and stator yoke 24 and magnetic return member 25 is ensured through the opening.

The stator yoke 24 and the radial groove 36 are two half shells 31 of the housing 30 in the stator yoke 24 and the magnetic return member 25 inserted into the radial grooves 36, 37. 32 correspond to each other to be fixed without moving in the radial and axial directions. To this end, the stator yoke 24 is deformed compared to the embodiment of FIGS. 1 to 3, which can be seen at the stator yoke 24 shown in plan view in FIG. As shown, both sides of the cross bridge 243 thereof have hook roots 411, respectively, which protrude radially outwardly, and an overlap 412 extending parallel to the yoke arms 251, 252. It includes. The overlap is the back side opposite the radial groove 36 of the radial bridge 35 in the two half shells 31, 32 in the stator yoke 24 (FIG. 9) inserted in the radial groove 36. Positive nesting For this purpose, at the end in the outer ring 34 of each radial groove 36 for receiving the stator yoke 24, a radial recess 42 is formed in the groove bottom and the radial recess of the radial recess is formed. The directional depth is such that, in the stator yoke 24 inserted in the correct position in the radial groove 36, the lower edge of the recess 42 toward the inner ring 33 of the hook root 411 of the hook 41 is provided. It is set to touch the floor. The stator yoke 24 is thus positioned on the one hand in radial direction to the tolerance and on the other hand the two half shells 31, 32 are clamped to each other by the hook 41 of the overlap 412. do.

In order to ensure automatic startup of the unipolar transverse flux generator, as shown in FIG. 1, the machine is implemented with at least two lanes. In this case, each stator module 14 is accommodated in the housing 30 described above, and the two housings 30 are rotated by 90 ° electric to each other and fitted in the axial direction. When the single pole transverse flux generator is implemented with 32 poles, the rotation angle deviation corresponds to a rotation angle of 5.625 ° spatially. In order to ensure this deviation of the rotational angle of the housing 30 to the tolerance, from the outer surface of the half shell 31 or 32 opposite the radial grooves 36, 37, the same two radial directions spaced apart from each other Recesses 43, 44 extend between radial bridges 35, so that the ring section 341 of the outer ring 34 of one of the half shells 31 or 32 restricts the air flow opening 40 to the outside. Is formed. The width of the radial recesses 43, 44 corresponds to the width of the hook 41 protruding on both sides of the stator yoke 24, the radial depth of which corresponds to the axial size of the hook 41. The spacing of the radial recesses 43 and the radial direction for the stator yoke 24 in the circumferential direction relative to the radial groove 36 for the stator yoke 24 that is continuous in the circumferential direction of the housing 30. The same spacing for the radial recess 44 relative to the groove 36 corresponds to the angle at which the two stator modules 14 should be rotated with each other when the unipolar transverse flux generator is implemented in two lanes. When implemented in two lanes, the spacing is 90 ° electric, ie 5.625 ° spatially for a machine with 32 poles. In machines with multiple lanes the rotation angle deviation is 360 ° / m electric and m is the number of fitted stator modules 14, greater than two. In the half shells 31 and 32 lying up and down with each other, the hooks 41 then engage the radial recesses 43 or 44 of the adjacent half shells of the housing 30 of the stator module 14, thereby providing two stators. The module 14 is correctly positioned in the circumferential direction.

The assembly of the stator module 14 in the housing 30 is made by the following joining technique.

First, as shown in the lower half shell 31 for the magnetic return member in FIG. 9, the magnetic return member 25 is provided in all the radial grooves 37 of the inner ring 33 in the first half shell 31. Is mounted. The ring coil 23 (FIG. 1) is then inserted into a groove 39 in a straight line when viewed in the circumferential direction while in the radial bridge 35. The second half shell 32 is then disposed on the preassembled half shell 31, and the magnetic return member 25 protruding axially from the half shell 31 is the radial groove of the half shell 32. It is inserted into 37. The stator yoke 24 from the outside is then inserted into the radial groove 36 until the root 411 of the protruding hook 41 abuts the bottom of the recess 42, while at the same time the overlap 412 is radiated. By overlapping the rear face of the directional bridge 35, the two half shells 31, 32 are coupled to each other in the axial direction. The position of the stator yoke 24 in the two half shells 31, 32 is shown for the stator yoke 24 in the lower half shell 31 in FIG. 9.

When the unipolar transverse flux generator is implemented in multiple lanes, a second stator module 14 comprising a housing 30 coupled in the same manner is arranged in the first housing 30, and as described above, the stator yoke ( The hook 41 of 24 engages one of the radial recesses 43 or 44 of the second housing 30 and it is ensured that the stator modules 14 are rotated with each other by 90 ° electric. In each of the two outer half shells 31, 32 of the four half shells 31, 32, a bearing shield 45 for receiving the rotor shaft 13 is fixed one by one. The bearing shield 45 is only half seen in perspective in FIG. 12. These two bearing shield halves 45 are secured to the inner ring 33 of the half shell 31 or 32 by the flange portion 46. A bearing engagement 47 spaced at right angles from the flange portion 46 receives a pivot bearing for the rotor shaft 13 (FIG. 1).

As described above, the unipolar transverse flux generator implemented with a plurality of lanes has stator modules 14 fixedly arranged side by side and arranged in a straight line in the axial direction, and the rotor modules 15 have a predetermined angle to each other. It may be implemented in a manner that is arranged rotationally on the rotor shaft (13). In this case, as shown in FIG. 11 for an embodiment consisting of two lanes, the stator yoke 24 of the stator module 14 lying next to each other in the axial direction is a bridge 48 extending axially in its cross bridge area. The possibility of coupling to each other arises. In this case the stator yoke 48 including the bridge 48 is embodied as an integral punching part 49. One protruding hook 41 is again arranged on the outer surfaces of the stator yoke 24 opposite each other. The punching part 49 is inserted into radial grooves 36 which are in alignment with each other in the four half shells 31, 32 after being preassembled, and the bridge 48 is fitted with two half shells 31 fitted. The radial grooves 36 of the radial bridges 35 are inserted into radial recesses 42 in the 32, and the protruding hooks 41 in the two outer half shells 31, 32, respectively. Overlap the other side on the opposite side.

FIG. 13 shows a modular unit for a monopole transverse flux generator with sixteen poles implemented in the form of a hollow shaft. The module unit again consists of a stator module 14 and a rotor module 15 both formed as described above, whereby the same parts are provided with the same reference numerals in FIG. 13. In the embodiment of FIG. 13 the rotor module 15 is arranged on the hollow shaft 50 to be rotationally fixed. As shown in FIG. 1, the complete unipolar transverse flux generator is implemented in two lanes, thus providing two stator modules 14 and two rotor modules 15 disposed adjacent on the hollow shaft 50. Including a module unit, the stator module 14 and the rotor module 15 of the second module unit are again rotated with each other by 90 ° electric relative to the first module unit.

This hollow shaft version of the unipolar transverse flux generator is well suited as a drive motor for an electrical engineering wheel brake, for example as known from WO 96/00301. The rotation / translational drive driven by the drive motor is arranged inside the hollow shaft 50, whereby an extremely small structural shape of the wheel brake is achieved.

Of course, it is also possible for the unipolar transverse flux generator according to the embodiment of FIG. 13 to be implemented in a number of lanes, for example three lanes, an embodiment consisting of two lanes in view of the space requirements required for the placement of the electrical wheel brake. Very suitable at

Claims (26)

A rotor 12 rotatable about the rotor axis 19 and a stator 11 concentric with the rotor axis 19, the rotor having at least one rotor module 15, The rotor module is coaxially and is fixed between two ferromagnetic rotor rings (16, 17) and the rotor rings (16, 17) formed in a tooth shape having a constant tooth pitch, respectively, and the rotor shaft ( A permanent magnet ring 18 magnetized with a single pole in the direction of 19), said stator comprising at least one stator module 14 assigned to said rotor module 15, said stator module comprising said rotor; It consists of one ring coil (23; 23 ') coaxially disposed on axis (19) and a U-shaped stator yoke (24) superimposed thereon, the stator yoke having a pitch corresponding to one of the tooth pitches. In the monopolar transverse flux generator fixed to the housing 10, The toothing of the rotor rings 16, 17 takes place only at the outer periphery of the rotor rings 16, 17 opposite the rotor shaft 19, In the stator module 14, the stator yoke 24 has the first yoke arm 241 of the stator yoke 24 against the first rotor ring 16 and of the stator yoke 24. The second yoke arms 241 face each other with radial gap spacing relative to the first rotating ring 17, One magnetic return member 25; 25 'is disposed between the stator yokes 24 continuous in the rotational direction of the rotor 12, and the magnetic return member has two rotor rings 16 in the axial direction. , 17), and facing the rotor ring at radial gap intervals. 2. The rotor of claim 1 wherein the rotor 12 comprises two identical rotor modules 15, the stator 11 comprising two identical stator modules 14, The stator modules 14 are axially adjacent within the housing 10, and the rotor modules 15 are assigned to each other on the rotor shaft 13 axially adjacent to each other and the stator module 14 Or the rotor modules (15) are each arranged to rotate each other by 90 ° electric. 2. The rotor (100) of claim 1, wherein the rotor (12) comprises m rotor modules (15), the stator (11) comprises m stator modules (14), The stator modules 14 are axially adjacent within the housing 10, and the rotor modules 15 are assigned to each other on the rotor shaft 13 axially adjacent to each other and the stator module 14 Or the rotor modules (15) are each arranged to rotate each other by 360 ° / m electric, and m is an integer greater than two. 4. The monopolar transverse flux generator according to any one of claims 1 to 3, wherein the stator yoke 23, the magnetic return members 25; 25 ', and the rotor rings 16, 17 are laminated. . 5. The unipolar transverse magnetic flux generator according to any one of claims 1 to 4, wherein the magnetic return member (25; 25 ') is displaced with respect to the stator yoke (24) by a pole pitch. The radial gap spacing between the adjuster yoke 24 and the rotor rings 16, 17 on the one hand and the magnetic return member 25 on the other hand. 25 ') and the radial gap spacing between the rotor rings (16, 17) is set to the same magnitude. 7. The free front portion 244 of the yoke arms 241, 242 of the stator yoke 24 has at least the same axial width as the stator rings 16, 17. And one side or both sides protrude from the rotor ring. 8. The width of the stator yoke 24 and the width of the magnetic return members 25 and 25 ', respectively, have the same size as measured in the direction of rotation. Unipolar transverse flux generator. 9. The tooth width b _ZR of the teeth 22 of the rotor rings 16, 17 versus the width of the stator yoke 24 and the magnetic return member 25 according to claim 1. A ratio of the width b) to the width b _ZS is greater than 1 and less than 2, respectively, and suitably set to 1.5 or less in the rotation direction, respectively. 10. The arm according to any one of the preceding claims, wherein the magnetic return member (25) is two short arms (251, 252) radially opposite to one rotor ring (16, 17), respectively. Have a C-shape with one cross bridge 253 which couples them together, the cross bridge having a rotor shaft 19 at the inner surface of a ring coil 23 formed in a circle towards the rotor shaft 19. Unipolar transverse flux generator, characterized in that it extends in parallel to the. 10. The magnetic return member 25 'according to any one of the preceding claims, wherein the magnetic return members 25'are two long arms 251'and 252' facing radially with respect to the rotor ring 16 or 17, respectively. And a U-shape comprising a cross bridge 253 'extending parallel to the rotor axis 19 while engaging the arms with each other, The ring coil 23 ′ of the stator module 14 is formed in a point-symmetrical grain shape with respect to the rotor axis 19 in the radial plane, so that the ring coils are alternately alternately yoke arms of the stator yoke 24. A unipolar transverse flux generator characterized in that it extends past the outer surface of the cross bridge (253 ') of the magnetic return member (25') opposite the rotor shaft (19) through the (241,242). 12. The unipolar transverse flux generator as set forth in claim 11, wherein the stator yoke (24) and the magnetic return member (25 ') are formed identically. 13. The free front portion 254 or 254 'of the arms 251, 252 or 251', 252 'of the magnetic return member 25 or 25' is at least the rotor. A unipolar transverse flux generator having the same axial width as the rings (16,17) and projecting one side or both sides over the rotor ring. According to any one of claims 1 to 13, the current pulse is supplied to both poles of the stator module 14 according to the rotation angle θ of the rotor 12, The current pulses in the stator module 14 are phase shifted from each other by 90 ° electric in the two stator modules 14 and 360 ° / m electric in the m stator modules 14, where m is an integer greater than two. A unipolar lateral flux generator characterized by the above-mentioned. The method according to any one of claims 1 to 14, wherein each stator module (14) is housed in a housing (30) consisting of two half shells (31, 32), the half shells being formed identically, Radial grooves 36, 37 for placing the stator yoke 24 on the one hand and the magnetic return member 25 on the other hand, which are placed up and down with one another in mirror symmetry, and are in axial alignment with one another. And a groove (39) facing each other in mirror symmetry and disposed concentrically with the housing axis (38) and for receiving the ring coil (23). The shell of claim 15, wherein each half shell (31, 32) has a lattice structure comprising an inner ring (33) and an outer ring (34) concentrically formed, wherein the inner and outer rings are radial bridges ( 35) are integrally coupled to each other by A radial groove 37 for receiving the magnetic return member 25 is formed in the inner ring 33, and a radial groove 36 for receiving the stator yoke 24 includes an inner ring 33, radially. Single pole transverse flux generator, characterized in that it extends over the directional bridge (35) and the outer ring (34). 18. The unipolar lateral flux generator as set forth in claim 16, wherein a groove (39) for a ring coil (23) is formed in said radial bridge (35). 18. The stator yoke (24) according to any one of claims 15 to 17, wherein the stator yoke (24) and the radial grooves (36) receiving the same include: a stator yoke (24) inserted into the radial grooves (36, 37) A unipolar transverse flux generator, characterized in that the two half shells (31,32) of the housing (30) in the magnetic return member (25) correspond to each other such that they are fixed without moving radially and axially with each other. 19. The width of the radial grooves 36, 37 corresponds to the thicknesses of the stator yoke 24 and the magnetic return member 25, wherein the radial grooves 36, 37 are axially oriented. And the depth is set slightly larger than half of the axial width of the stator yoke (24) and the magnetic return member (25). 20. The stator yoke (24) according to claim 18 or 19, wherein the stator yoke (24) includes one protruding hook (41) on each side of its cross bridge (243), the hook being inserted into the radial groove (36). And a positive polarization of the rear side of the radial bridge (35) opposite the radial grooves (36) in the two half shells (31,32) in the fixed stator yoke (24). The single-pole transverse flux generator according to claim 20, wherein the rotor module 15 is disposed on the rotor shaft 13 in a straight line in the axial direction, and the stator module 14 has a plurality of lanes rotated to each other by a predetermined angle. To From the outer surface of the half shell 31 opposite the radial groove 36, two radial recesses 43, 44 spaced apart from each other extend between the radial bridges 35 and the half shell 31 or Formed in the ring section 341 of the outer ring 34 of 32, the width of the radial recess corresponding to the width of the hook 41 protruding from the stator yoke 24, the radial depth of which is hooked Corresponds to the axial size of 41, The first radial recess 43 is displaced by a predetermined rotational angle with respect to the subsequent radial groove 36 for the stator yoke 24, and the second radial recess 44 is a preceding one. A unipolar lateral flux generator, characterized in that it is displaced by the same predetermined angle with respect to the radial groove (36) for the stator yoke (24). 20. The stator module 14 is arranged in a straight line in the axial direction so that the rotor modules 15 are rotated with each other by a predetermined angle and have a plurality of lanes arranged on the rotor shaft 13 according to claim 18 or 19. In unipolar lateral flux generator, The stator yokes 24 of the stator modules 14 lying next to each other in the axial direction are joined to each other by bridges 48 extending axially in their cross bridge region, Two stator yokes lying on the outside of the stator yokes 24 coupled to each other include hooks 41 protruding from the cross bridges 243 on their outer sides, respectively, which hooks are inserted into the radial grooves 36. Unipolar transverse flux generator, characterized in overlapping the rear surface of the radial bridge (35) in the stator yoke (24) in the two outer half shells (31,32) opposite the radial groove (36). 23. The unipolar transverse flux generator as set forth in claim 22, wherein the stator yokes (24) connected to each other via the bridges (48) are implemented as integral punching parts (49). 24. The radial recess 42 according to any one of claims 20 to 23, wherein at one end of the radial grooves lying in the outer ring 34 a radial recess 42 is formed in the groove bottom and the radial recess Radial depth of the inner ring 33 of the hook root 411 of the hook 41 protruding from the cross bridge 23 in the stator yoke 24 inserted in the correct position in the radial groove 36. And the lower edge directed toward the bottom of the recess (42). 25. The method according to any one of claims 15 to 24, for the pivot bearing of the rotor shaft (13), on which two bearing shields (45) are placed on two outer half shells (32, 32). And the bearing shield is fixed to the half shells 31, 32 by a flange portion 46, and the coaxial bearing engagement portion 47 protruding from the flange portion receives the rotor shaft 13. Unipolar lateral flux generator. 26. The unipolar transverse flux generator as claimed in any one of claims 1 to 25, wherein at least one rotor module (15) is rotationally arranged on one hollow shaft (50).