Permanent magnet generator with internal motor dragging function

Abstract

The utility model provides a permanent magnet generator with an internal motor dragging function, which belongs to the technical field of permanent magnet generators and comprises a stator support, a permanent magnet rotor, a first winding and a second winding, the stator support is provided with a plurality of wire slots, the first winding and the second winding are wound on the wire slots, and the first winding is positioned outside relative to the second winding. The first winding and the second winding are mutually insulated, the wire diameter of a coil of the second winding is 1.5-5 times that of a coil of the first winding, the first winding is connected with a power supply, and the second winding is connected with a load; the magnetic fields generated by the two windings are simultaneously on the iron core of the same stator and simultaneously act on the same rotor, the rotor is a permanent magnet and does not generate induction current, and the magnetic fields generated by the two windings are mutually counteracted, so that the rotating torque of the rotor is improved, the external dragging power loss can be reduced, and the service life of the motor is prolonged. Therefore, not only is the power generation efficiency of the generator improved, but also the investment of a dragging power source is reduced and saved to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet generators, in particular to a permanent magnet generator with an internal motor dragging function. Background Art

[0002] Traditional permanent magnet generators require external power to drive the rotor of the generator to rotate. When the rotor rotates, the magnetic lines of force of the permanent magnet of the rotor cut the stator winding to generate induced current, which is output to the outside to generate electricity. At the same time, the stator winding generates a back electromotive force when outputting current. The back electromotive force (Ampere force) hinders the rotation of the generator rotor. An external force exceeding its resistance is required to drive the rotor to rotate and generate electricity. Therefore, how to effectively reduce the influence of Ampere resistance on the generator rotor and output power efficiently is an urgent problem to be solved. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a permanent magnet generator with an internal motor driving function.

[0004] The technical solution adopted by the utility model is as follows: a permanent magnet generator with an internal motor traction function, including a stator bracket and a permanent magnet rotor, a plurality of wire slots are arranged on the stator bracket, and also includes a first winding and a second winding wound in the wire slots, the first winding is located on the outside relative to the second winding, the first winding and the second winding are insulated from each other, the wire diameter of the second winding coil is 1.5-5 times the wire diameter of the first winding coil, the first winding is connected to a power supply, and the second winding is connected to a load.

[0005] The first winding and the second winding are insulated from each other by a mica sheet.

[0006] The beneficial effects of the utility model are as follows: in the utility model, since the magnetic fields generated by the two windings are simultaneously in the same stator core and act on a rotor at the same time, and since the rotor is a permanent magnet and does not generate induced current, the magnetic fields generated by the two windings have a mutual offsetting effect, thereby improving the rotor's rotational torque and reducing external drag power loss, thereby not only improving the power generation efficiency of the generator, but also reducing and saving the investment in the drag power source to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0008] Figure 1 It is a schematic diagram of the utility model;

[0009] Figure 2 It is a schematic diagram of a generator in the prior art. DETAILED DESCRIPTION

[0010] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0011] In the description of the present application, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, "plurality" means two or more.

[0012] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0013] In the description of this application, it should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0014] Embodiment 1:

[0015] like Figure 1 and Figure 2As shown, a permanent magnet generator with an internal motor traction function includes a stator support 1 and a permanent magnet rotor 2. The stator support 1 is provided with a plurality of wire slots, and also includes a first winding 3 and a second winding 4 wound in the wire slots. The first winding 3 is located outside the second winding 4. The present design is to increase the size of each part of the ordinary generator, and to determine that the wire slots of the generator stator support 1 can be embedded with two windings. The number of turns of the two winding coils, the winding direction of the turns, the slot size and the number of poles embedded in the stator are the same as the original design of the generator, but the wire diameter of the coil in the second winding 4 is 1.5-5 times the wire diameter of the coil in the first winding 3, and the first winding 3 and the second winding 4 are insulated from each other, wherein the first winding 3 is connected to a power source, and the second winding 4 is connected to a load. When the first winding 3 is connected to an alternating power source, a rotating magnetic field is generated in the stator, and the rotating magnetic field attracts (or pushes) the permanent magnet rotor 2 to rotate synchronously, so that the magnetic lines of force of the rotating permanent magnet rotor 2 cut the second winding 4, so that this winding generates an induced current output power. It is undeniable that this winding also generates back electromotive force and corresponding Ampere resistance. However, since the magnetic fields generated by the two windings act on the same stator core and rotor at the same time, and since the rotor is a permanent magnet, it will not generate induced current. The magnetic fields generated by the two windings offset each other, increasing the rotor's torque and reducing external drag power loss, which not only improves the generator's power generation efficiency, but also reduces and saves the investment in traction power source to a certain extent.

[0016] Furthermore, the first winding 3 and the second winding 4 are insulated from each other by providing a mica sheet 5. Mica has excellent electrical insulation and heat resistance. Of course, other electrical insulation materials such as polytetrafluoroethylene, epoxy resin, etc. can also be used.

[0017] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A permanent magnet generator with an internal motor traction function, comprising a stator bracket and a permanent magnet rotor, wherein the stator bracket is provided with a plurality of wire slots, characterized in that: It also includes a first winding and a second winding wound in the wire slot, the first winding is located on the outside relative to the second winding, the first winding and the second winding are insulated from each other, the wire diameter of the coil in the second winding is 1.5-5 times the wire diameter of the coil in the first winding, the first winding is connected to a power supply, and the second winding is connected to a load.

2. A permanent magnet generator with an internal motor driving function according to claim 1, characterized in that: The first winding and the second winding are insulated from each other by a mica sheet.

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