Rotor of a permanent magnet generator and generator

Abstract

Rotor of a permanent magnet generator comprising a carrier (1), wherein a stator winding (2) is fixedly attached to the top of the carrier (1), characterized in that several annular device units are rotatably arranged in a circular arrangement on the outside of the carrier (1), wherein a coupling unit is fixedly arranged between the several annular device units, and wind attack components are fixedly arranged on each of the annular device units; wherein each annular device unit comprises ring tracks (3), wherein the radii of the several ring tracks (3) increase successively, and wherein the several ring tracks (3) are each arranged concentrically to the carrier (1).

Description

Technical field

[0001] The present invention relates to the field of generators and in particular relates to a rotor of a permanent magnet generator and to a generator. State of the art

[0002] A permanent magnet generator is a synchronous generator that uses a permanent magnet material to generate an excitation field and can perform highly efficient power generation without an external excitation power supply; its essential feature is that rare-earth permanent magnet materials (e.g., NdFeB) are used as rotor poles, resulting in advantages such as a simple structure, high efficiency (typically 90% to 95%), high power density, and low maintenance costs.

[0003] The propulsion system for high-speed trains is primarily electric, where electrical energy is converted into mechanical energy by an electric traction transmission system to drive the train. The energy source of the high-speed train is electrical energy, which is converted into mechanical energy by the electric traction transmission system, thus generating tractive force. This type of electric propulsion is used in most high-speed trains worldwide, including those in China. The electrical power supply for high-speed trains is primarily provided via an overhead line, with the pantograph on the train roof making contact with the contact wire of the overhead line to draw electrical energy. This type of power supply ensures the stable operation of high-speed trains and efficient energy use.

[0004] Research indicates that a publication with the publication number CN117823347A concerns a ring-shaped combined wind generator comprising a support, a stator, a rotor, and a ring-shaped track. The stator contains induction windings, and the rotor contains permanent magnets; the stator and the track are attached to the support; the rotor is slidably mounted on the track; both the stator and the rotor are mounted on the support; both the stator and the rotor are composed of several arc-shaped modules, and blades are provided on the arc-shaped modules of the rotor, as are wind-attack modules.

[0005] Although the aforementioned patent literature dispenses with a large tower, thus making installation more convenient, reducing costs by more than 60%, and lowering installation costs by about 80%, and although this ring-shaped combined wind turbine can be designed in different sizes as needed due to the lack of restrictions on tower and blade dimensions and can achieve a generating capacity of more than 100 MW, in practical application the number of tracks is low; if several groups of tracks are provided, the friction during rotation of the tracks is high, which impairs the rotational efficiency of the rotor, thus adversely affecting power generation operation, and the system cannot be well used for the electric propulsion of high-speed trains.

[0006] Therefore, it is necessary to invent a rotor for a permanent magnet generator as well as a generator. Content of the present invention

[0007] The present invention provides a rotor of a permanent magnet generator and a generator to solve the problems raised in the preceding prior art.

[0008] To achieve the aforementioned purpose, the present invention provides the following technical solution: A rotor of a permanent magnet generator comprises a carrier, wherein a stator winding is fixedly attached to the top of the carrier, wherein several ring-shaped device units are rotatably arranged in a circular arrangement on the outside of the carrier, wherein a coupling unit is fixedly arranged between the several ring-shaped device units, and wherein wind attack components are fixedly arranged on each of the ring-shaped device units.

[0009] Preferably, each ring-shaped device unit comprises ring tracks, wherein the radii of the multiple ring tracks increase successively, and wherein the multiple ring tracks are each arranged concentrically to the support.

[0010] Preferably, each ring-shaped device unit further comprises a motion platform, wherein the multiple motion platforms are each arranged directly above the multiple ring tracks.

[0011] Preferably, several rotors are fixedly arranged in a circular arrangement on the inside of the motion platforms, wherein the several rotors are arranged in a circular arrangement on the outside of the stator winding.

[0012] Preferably, several rollers are arranged to roll on the upper side of the ring tracks, and the underside of the movement platforms is arranged to roll on the several rollers.

[0013] Preferably, the coupling unit comprises several coupling rods, wherein the ends of the several coupling rods are fixedly arranged in a circular arrangement on a side part of the support, and wherein the several coupling rods are fully attached to the several movement platforms.

[0014] Preferably, each wind attack component comprises multiple current collectors, the underside of each of the multiple current collectors being rigidly attached to the top of each of the multiple movement platforms.

[0015] A generator comprising the aforementioned rotor of a permanent magnet generator.

[0016] The advantageous effects of the present invention are as follows: Through the interaction of the support, the stator winding, the ring-shaped device units, the coupling unit, and the wind-input components, the function for improving power generation efficiency can be achieved by providing several groups of ring-shaped device units; even with the provision of several groups of ring-shaped device units and an increase in the number of ring tracks, the frictional resistance during the rotation of several groups of ring tracks can be significantly reduced, thereby improving the rotational efficiency of the rotor and thus promoting power generation operation; the present invention can be well used in the electrical drive system of high-speed trains. Brief description of the characters Fig. Figure 1 is a perspective view of the internal structure according to the present invention; Fig. Figure 2 is a perspective view of the internal structure according to the present invention; Fig. Figure 3 is a perspective view of the structure according to the present invention; Fig. Figure 4 is a perspective view of the structure according to the present invention. List of designations

[0017] 1 Carrier; 2 Stator winding; 3 Ring track; 4 Motion platform; 5 Rotor; 6 Roller; 7 Connecting rod; 8 Current collector. Detailed descriptions

[0018] Preferred embodiments of the present invention are explained below with reference to the drawings. It should be understood that the preferred embodiments described herein serve only to describe and explain the present invention and are not intended to limit it.

[0019] It will be on Fig. 1 to Fig.4 Reference is made to. A rotor of a permanent magnet generator according to the present invention comprises a carrier 1, wherein a stator winding 2 is fixedly attached to the top of the carrier 1, wherein several annular device units are rotatably arranged in a circular arrangement on the outside of the carrier 1, wherein a coupling unit is fixedly arranged between the several annular device units, and wherein wind attack components are fixedly arranged on each of the annular device units, so that by providing several groups of annular device units the function for improving power generation efficiency can be realized, and that even when providing several groups of annular device units and increasing the number of tracks, the frictional resistance when rotating several groups of tracks can be significantly reduced.which improves the rotational efficiency and thus facilitates power generation operations.

[0020] Each annular device unit further comprises ring tracks 3, wherein the radii of the multiple ring tracks 3 increase successively, and wherein the multiple ring tracks 3 are each arranged concentrically to the support 1; furthermore, each annular device unit comprises a motion platform 4, wherein the multiple motion platforms 4 are each arranged directly above the multiple ring tracks 3; on the inside of the motion platforms 4, multiple rotors 5 are each fixedly arranged in a circular arrangement, wherein the multiple rotors 5 are each arranged in a circular arrangement on the outside of the stator winding 2.Specifically, when the motion platform 4 is rotated, the corresponding rotors 5 can be set in motion so that the multiple rotors 5 rotate around the stator winding 2, meaning that the rotation of the motion platform 4 achieves a cutting of the magnetic field lines to generate electricity; furthermore, the present invention provides for multiple groups of ring-shaped device units, i.e., multiple groups of ring tracks 3, motion platforms 4 and rotors are provided, thereby realizing the function of improving electricity generation efficiency.

[0021] Furthermore, several rollers 6 are arranged to roll on the upper side of each of the ring tracks 3, and the underside of the motion platforms 4 is arranged to roll on the several rollers 6. Specifically, the frictional resistance during rotation between the motion platform 4 and the ring track 3 can be significantly reduced under the action of the rollers 6, so that even with the provision of several groups of ring-shaped device units and an increase in the number of ring tracks 3, the frictional resistance can be significantly reduced, thereby improving the rotational efficiency of the motion platform 4 and thus promoting power generation operation, so that the present invention can be well used in the electrical drive system of high-speed trains.

[0022] The coupling unit further comprises several connecting rods 7, the ends of which are fixedly arranged in a circular configuration on a side part of the support 1, and the connecting rods are fully attached to the multiple motion platforms 4. Specifically, the coupling action of the connecting rods 7 allows the multiple motion platforms 4 to rotate synchronously to ensure the stability of the power generation.

[0023] Furthermore, each wind attack component comprises several current collectors 8, the underside of which is fixedly attached to the top of each of the multiple movement platforms 4. Specifically, the current collector 8 serves to contact an overhead line (not shown in the drawing), the overhead line being located above the ring-shaped device unit, and the movement platform 4 being driven by a drive system of a high-speed train (not shown in the drawing) to run on the circular track 3.

[0024] A generator comprises the aforementioned rotor of a permanent magnet generator.

[0025] The foregoing embodiments are merely preferred embodiments of the present invention. Those skilled in the field can modify the present invention based on the foregoing technical solution or transform it into equivalent technical solutions. Therefore, all simple modifications or equivalent substitutions based on the technical solution of the present invention fall within the scope of protection of the present invention. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 117823347A

[0004]

Claims

[1] Rotor of a permanent magnet generator comprising a support (1) wherein a stator winding (2) is fixedly attached to the top of the support (1), characterized by , that several ring-shaped device units are rotatably arranged in a circular arrangement on the outside of the support (1), wherein a coupling unit is fixedly arranged between the several ring-shaped device units, and wind attack components are fixedly arranged on each of the ring-shaped device units; wherein each ring-shaped device unit comprises ring tracks (3), wherein the radii of the several ring tracks (3) increase successively, and wherein the several ring tracks (3) are each arranged concentrically to the support (1). [2] Rotor of a permanent magnet generator and generator according to claim 1, characterized by, that each ring-shaped device unit further comprises a motion platform (4), wherein the multiple motion platforms (4) are each arranged directly above the multiple ring tracks (3). [3] Rotor of a permanent magnet generator and generator according to claim 2, characterized by , that several rotors (5) are fixedly arranged in a circular arrangement on the inside of the motion platform (4), wherein the several rotors (5) are each arranged in a circular arrangement on the outside of the stator winding (2). [4] Rotor of a permanent magnet generator and generator according to claim 3, characterized by , that several rollers (6) are arranged to roll on the top of the ring track (3), and that the underside of each movement platform (4) is arranged to roll on the several rollers (6). [5] Rotor of a permanent magnet generator and generator according to claim 3, characterized by, that the coupling unit comprises several coupling rods (7), wherein the ends of the several coupling rods (7) are fixedly arranged in a circular arrangement on a side part of the support (1), and wherein the several coupling rods (7) are fully attached to the several movement platforms (4). [6] Rotor of a permanent magnet generator and generator according to claim 2, characterized by that each wind attack component comprises multiple current collectors (8), the underside of each of the multiple current collectors (8) being fixed to the top of each of the multiple movement platforms (4). [7] Generator, characterized by that the generator comprises the rotor of a permanent magnet generator according to one of claims 1 to 6.

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