CN215911959U

CN215911959U - Generator magnetic steel device and permanent magnet four-pole brushless synchronous generator

Info

Publication number: CN215911959U
Application number: CN202122151070.5U
Authority: CN
Inventors: 阮用秋
Original assignee: Fuan Fengchi Electromechanical Co ltd
Current assignee: Fuan Fengchi Electromechanical Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-02-25
Anticipated expiration: 2031-09-07

Abstract

The embodiment of the utility model discloses a generator magnetic steel device and a permanent magnet four-pole brushless synchronous generator. Be formed with a plurality of magnetic poles on the rotor core, and be the indent structure between two adjacent magnetic poles on rotor core's the outer wall to constitute the breach between rotor core and stator core, all dash the dead slot that has "W" type in every magnetic pole, make two notches in the outside and two notches of inboard on the dead slot, and install the magnet steel of size difference in the notch in the dead slot outside and the notch of dead slot inboard respectively. The gap is formed between two adjacent magnetic poles on the rotor core, so that the mutual influence between the magnetic poles can be reduced, the W-shaped magnetic steel distribution is adopted on the rotor core to obtain better magnetic field distribution, and the power generation power of the magneto can be effectively improved by utilizing the two pieces of magnetic steel with different sizes.

Description

Generator magnetic steel device and permanent magnet four-pole brushless synchronous generator

Technical Field

The embodiment of the utility model relates to the technical field of generators, in particular to a generator magnetic steel device and a permanent magnet four-pole brushless synchronous generator.

Background

At present, in a constant-frequency alternating-current power supply system, an electrically excited synchronous generator is favorable for regulating load voltage by virtue of good magnetic field regulation capacity, and the direct-current excitation capacity required for regulating a magnetic field is small, but the electrically excited synchronous generator is provided with an electric brush collecting ring, so that the reliability is low, and the application of the electrically excited synchronous generator in severe conditions is limited. The rare earth permanent magnet motor is excited by the permanent magnet, so that the rare earth permanent magnet motor has no excitation loss, has higher efficiency than an electrically excited motor, and has a series of advantages of simple structure, high reliability and the like, thereby being applied to a plurality of industrial fields. But most of magnet steel structures in current permanent magnet motor are complicated to it is chaotic to obtain the current waveform when using, is not the standard sine wave, mostly can use after going through rectification and contravariant processing, brings inconveniently like this in the reality, can improve use cost.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a generator magnetic steel device and a permanent magnet four-pole brushless synchronous generator, and aims to solve the problems of low power generation and high cost of a magneto in the prior art.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

according to a first aspect of the embodiments of the present invention, there is provided a generator magnetic steel device, including a rotor core and a stator core disposed outside the rotor core, wherein a rotating shaft penetrates through the rotor core, and the generator magnetic steel device is characterized in that: the rotor core is provided with a plurality of magnetic poles, an inner concave structure is formed between every two adjacent magnetic poles on the outer wall of the rotor core, a notch is formed between the rotor core and the stator core, a W-shaped hollow groove is punched in each magnetic pole, two notches on the outer side and two notches on the inner side are formed in the hollow groove, and magnetic steels with different sizes are respectively installed in the notches on the outer side and the inner side of the hollow groove.

Furthermore, the stator core is of a hollow columnar structure formed by stamping and laminating silicon steel sheets, and the rotor core is of a hollow columnar structure formed by stamping and laminating silicon steel sheets and strip steel materials.

Furthermore, a plurality of empty slots on the rotor core are distributed along the circumferential direction of the rotor core, and two adjacent notches on the empty slots are arranged at an angle, wherein the included angle of the two adjacent notches ranges from 93 degrees to 94 degrees.

Furthermore, a stator winding hole is formed in the inner wall of the stator core, a stator winding coil is arranged in the stator winding hole, the outer diameter range of the stator core is 244mm-246mm, and the width range of a notch at the stator winding hole is 3mm-4 mm.

Furthermore, a plurality of triangular through holes and circular through holes are respectively formed in the rotor core, and the triangular through holes and the circular through holes are arranged in a staggered mode along the circumferential direction of the rotor core.

Further, install first channel-section steel in two slots in the dead slot outside respectively, install the second channel-section steel in two slots of dead slot inboard respectively, the cross sectional dimension of first channel-section steel is less than the cross sectional dimension of second channel-section steel, and wherein, the channel-section steel is the shaping of tombarthite neodymium iron boron material.

Furthermore, two ends of the rotor core are respectively and fixedly connected with a gland which covers the outer side of the empty groove, wherein the gland is molded by a non-magnetic material.

According to a second aspect of the embodiment of the utility model, a permanent magnet quadrupole brushless synchronous generator is provided, and a magnetic steel device of the generator according to the embodiment of the utility model comprises a machine shell, a stator core, a rotating shaft, a rotor core, magnetic steel, a winding coil, a front end cover, a rear end cover and a power output assembly, wherein the machine shell is formed by stretching an aluminum alloy material.

The embodiment of the utility model has the following advantages: through form the breach on rotor core between two adjacent magnetic poles, can reduce the interelectrode influence each other of magnetic pole, adopt the magnet steel distribution of "W" type simultaneously on rotor core to obtain better magnetic field distribution, and utilize the different magnet steel of two blocks of sizes, can let magneto's generated power improve 7% -11%, its magnet steel structure, reasonable in design, it is more convenient to use, and the cost is lower, and the loss of power is low.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.

Fig. 1 is a schematic view of an overall structure of a generator magnetic steel device according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of a permanent magnet four-pole brushless synchronous generator according to an embodiment of the present invention.

In the figure: 1. a rotor core; 2. a stator core; 3. a stator winding bore; 4. a stator winding coil; 5. a rotating shaft; 6. a notch; 7. an empty groove; 8. a first channel steel; 9. a second channel steel; 10. a triangular through hole; 11. a circular through hole; 12. a gland; 13. a casing.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1 and 2, the present invention provides a generator magnetic steel device, which includes a rotor core 1 and a stator core 2 disposed outside the rotor core 1. The stator core 2 is a hollow columnar structure formed by stamping and laminating silicon steel sheet materials, and the outer diameter range of the hollow columnar structure is 244mm-246 mm. The inner wall of the stator core 2 is provided with a stator winding hole 3, a stator winding coil 4 is arranged in the stator winding hole 3, and the width range of a notch at the position of the stator winding hole 3 is 3-4 mm.

As described above, it is preferable that the stator core 2 has an outer diameter of 245mm, an inner diameter of 156mm, a yoke height of 27.25mm, and a slot width of 3.5 mm. The 245mm spindle outer diameter is utilized, the weight and miniaturization of the magneto are effectively reduced, the width of the notch of 3.5mm does not affect the rule, the tooth width can be ensured, and the magnetic tooth density of the spindle is improved. In addition, the rotor core 1 is a hollow columnar structure formed by stamping and laminating silicon steel sheets and strip steel materials.

A rotating shaft 5 penetrates through the rotor core 1. And be formed with a plurality of magnetic poles on rotor core 1, and be the indent structure between two adjacent magnetic poles on rotor core 1's the outer wall to constitute breach 6 between rotor core 1 and stator core 2, utilize the setting of breach 6, can reduce the interelectrode mutual influence of magnetism. All towards the dead slot 7 of "W" type in every magnetic pole, make two notches of outside and two notches of inboard on the dead slot 7, and install the different magnet steel of size in the notch in the dead slot 7 outside and the notch in dead slot 7 inboard respectively. Specifically, the channel steel is formed by a 50H-grade rare earth neodymium iron boron material, the first channel steel 8 is respectively installed in two notches on the outer side of the empty groove 7, and the second channel steel 9 is respectively installed in two notches on the inner side of the empty groove 7. Preferably, the cross-sectional dimension of the second channel steel 9 is 30mmX7.6mm, and the cross-sectional dimension of the first magnetic steel 8 is 25mmX7.6mm, so that the cross-sectional dimension of the first channel steel 8 is smaller than that of the second channel steel 9, and the power generation power of the magneto is effectively improved by using two pieces of magnetic steel with different dimensions.

Wherein, a plurality of dead slots 7 on rotor core 1 distribute along rotor core 1's circumferencial direction, and are angle setting between 7 adjacent two notches on the dead slot. Preferably, the included angle between two adjacent notches is in the range of 93-94 °, and preferably 93.5 °, and better magnetic field distribution can be obtained by using the included angle between two notches of 93.5 °.

As described above, the rotor core 1 has the glands 12 fixed to both ends thereof, and the glands 12 cover the outer sides of the empty slots 7. The gland 12 is made of a non-magnetic conductive material, and the magnetic steel in the empty groove 7 is fixed by the arrangement of the gland 12 so as to prevent the magnetic steel from working and shifting and influencing normal work. In addition, still seted up a plurality of triangle through-hole 10 and circular through-hole 11 on rotor core 1 respectively, and triangle through-hole 10 and circular through-hole 11 are staggered arrangement along rotor core 1's circumferencial direction, through the setting of triangle through-hole 10 and circular through-hole 11, can effectively dispel the heat to rotor core 1 to reduce rotor core 1's temperature and magnet steel temperature, and combine the different magnet steel of two blocks of sizes, can let the generated power improve 7% -11%.

One preferred embodiment is: the utility model also provides a permanent magnet quadrupole brushless synchronous generator, which adopts the magnetic steel device of the generator. The permanent magnet four-pole brushless synchronous generator comprises a shell 13, a stator core 2, a rotating shaft 5, a rotor core 1, magnetic steel, a winding coil, a front end cover, a rear end cover and a power output assembly. Four magnetic poles are formed on the rotor core 1 in the circumferential direction, and a set of W-shaped empty slots 7 is distributed on each magnetic pole. Wherein, casing 13 is by aluminium alloy material stretch forming, and is good, the heat dissipation is fast through tensile casing 13 toughness of aluminum alloy, can effectual reduction magnetic leakage, can effectually dispel the heat to the spindle simultaneously, reduces the temperature of stator core 2 and winding to be fit for more operational environment.

Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

Claims

1. The utility model provides a generator magnet steel device, includes rotor core and the stator core who sets up in the rotor core outside, the pivot has been worn in the rotor core, its characterized in that: be formed with a plurality of magnetic poles on the rotor core, and be the indent structure between two adjacent magnetic poles on rotor core's the outer wall to constitute the breach between rotor core and stator core, all towards the dead slot that has "W" type in every magnetic pole, make two notches in the formation outside and two notches of inboard on the dead slot, and install the magnet steel of size difference in the notch in the dead slot outside and the notch of dead slot inboard respectively, a plurality of triangle through-hole and circular through-hole have been seted up on the rotor core respectively, and triangle through-hole and circular through-hole are the staggered arrangement along rotor core's circumferencial direction.

2. A generator magnetic steel device according to claim 1, wherein: the stator core is of a hollow columnar structure formed by stamping and laminating silicon steel sheets, and the rotor core is of a hollow columnar structure formed by stamping and laminating silicon steel sheets and strip steel materials.

3. A generator magnetic steel device according to claim 1, wherein: the rotor core is provided with a plurality of empty slots, the empty slots are distributed along the circumferential direction of the rotor core, two adjacent notches in the empty slots are arranged in an angle mode, and the included angle range of the two adjacent notches is 93-94 degrees.

4. A generator magnetic steel device according to claim 1, wherein: the stator winding structure is characterized in that stator winding holes are formed in the inner wall of the stator core, stator winding coils are arranged in the stator winding holes, the outer diameter range of the stator core is 244mm-246mm, and the width range of notches at the stator winding holes is 3mm-4 mm.

5. A generator magnetic steel device according to claim 1, wherein: install first channel-section steel in two slots in the dead slot outside respectively, install the second channel-section steel in two slots of dead slot inboard respectively, the cross sectional dimension of first channel-section steel is less than the cross sectional dimension of second channel-section steel, and wherein, the channel-section steel is the shaping of tombarthite neodymium iron boron material.

6. A generator magnetic steel device according to claim 1, wherein: and two ends of the rotor core are fixedly connected with glands respectively, and the glands cover the outer side of the empty groove, wherein the glands are molded by non-magnetic materials.

7. A permanent magnet quadrupole brushless synchronous generator, using a generator magnetic steel device according to any of claims 1-6, characterized in that: the permanent magnet four-pole brushless synchronous generator comprises a shell, a stator core, a rotating shaft, a rotor core, magnetic steel, a winding coil, a front end cover, a rear end cover and a power output assembly, wherein the shell is formed by stretching an aluminum alloy material.