CN205335991U - 200kW tombarthite permanent magnet generator - Google Patents

Abstract

The utility model discloses a 200kW rare earth permanent magnet generator, which comprises a stator, a rotor iron core, a magnetic tile, a front end cover and a rear end cover. The middle part of the stator punch is provided with a round hole matching the rotor core, the edge of the stator punch is provided with a buckle slot, and the stator punch on the outer ring of the round hole is evenly distributed with 36 coils Slot, the coil slot is T-shaped, the slot width of the coil slot is 6mm, T-shaped coil teeth are formed between adjacent coil slots, and the minimum vertical distance between the adjacent coil slots is 9mm. The alternator optimizes armature reflections and reduces motor demagnetization effects. The generator has smaller size, lighter weight, higher stability, and super continuous overload capacity (>20%). The unit is rated at 200kW, with a maximum load of 230kW for 4 hours It can be used in harsh environments for a long time without maintenance.

Description

A 200kW rare earth permanent magnet generator

technical field

The utility model relates to a generator, in particular to a 200kW rare earth permanent magnet generator.

Background technique

The stator of the generator is composed of three parts: the stator core, the stator winding and the frame. The stator core is composed of overlapping punched sheets of high magnetic permeability material. The structure of the punching plate directly affects the efficiency, life, performance and assembly production efficiency of the generator.

However, the 200kW high-power rare-earth permanent magnet generator in the prior art often has high armature reflection due to the stator structure problem, which reduces the power generation efficiency of the motor.

Utility model content

The purpose of the utility model is to provide a 200kW rare earth permanent magnet generator capable of optimizing the armature reflection of the generator and reducing the demagnetization effect of the generator.

The purpose of this utility model is achieved through such a technical scheme: a 200kW rare earth permanent magnet generator, including a stator, a rotor core, a magnetic tile, a front end cover and a rear end cover, and the magnetic tile uses rare earth NdFeB as the magnetic source body, the stator is composed of a number of stator punches, the middle part of the stator punch is provided with a round hole matching with the rotor core, the edge of the stator punch is provided with a buckle slot, and the outer ring of the round hole There are 36 coil slots evenly distributed on the stator punch, the coil slots are T-shaped, the slot width of the coil slots is 6mm, T-shaped coil teeth are formed between adjacent coil slots, and the gap between the adjacent coil slots is The minimum vertical distance is 9mm.

Further, a cooling fan is provided inside the front end cover.

Preferably, the included angle between the central axes of the adjacent coil slots and the central axes of the coil teeth is 5 degrees.

Preferably, the ratio of the outer radius of the stator punch to the inner radius of the circular hole is 1.5.

Owing to adopting above-mentioned technical scheme, the utility model has following advantage:

The stator punching design of this generator adopts the design scheme of 36 coil slots and high tooth magnetic density of the coil teeth. In order to solve the situation of high armature reflection of the 200kW high-power rare earth permanent magnet generator, the volume of the stator punching design can be compared with The excitation generator with the same power is much smaller in size, and the notch is designed to be 6mm, which optimizes the embedded wire process. Although the reactance will be slightly increased, the overall parameters will optimize the armature reflection and reduce the demagnetization effect of the motor. The generator has a smaller size, lighter weight, higher stability, and super continuous overload capacity (>20%). The unit is rated at 200kW, and the maximum load is 230kW for 4 hours. It can be used in harsh environments for a long time without maintenance.

Other advantages, objectives and features of the present utility model will be set forth in the following description to some extent, and to some extent, based on the investigation and research below, it will be obvious to those skilled in the art, or can be Get teaching from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained by the following description and claims.

Description of drawings

The accompanying drawings of the utility model are as follows:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the stator punching sheet of the present invention.

In the figure: 1. Stator; 2. Magnetic tile; 3. Rotor core; 4. Cooling fan; 5. Front end cover; 6. Rear end cover; 7. Stator punching piece; ; 10. Coil slot; 11. Coil teeth.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figures 1 and 2, a 200kW rare-earth permanent magnet generator in this city includes a stator 1, a rotor core 3, a magnetic tile 2, a front end cover 5 and a rear end cover 6, and the magnetic tile 2 is made of rare earth NdFeB is the magnetic source body, the stator 1 is composed of several stator punches 7, the middle part of the stator punches 7 is provided with a round hole 8 matching with the rotor core 3, and the sides of the stator punches 7 are set There are buckle slots 9, and 36 coil slots 10 are evenly distributed on the stator punching sheet 7 of the outer ring of the circular hole 8. The coil slots 10 are T-shaped, and the slot width of the coil slots 10 is 6 mm. T-shaped coil teeth 11 are formed between the coil slots 10, and the minimum vertical distance between the adjacent coil slots 10 is 9mm. This generator solves the situation reflected by the high armature of the 200kW high-power rare-earth permanent magnet generator, and the volume of the stator punching plate of the generator can be much smaller than that of the excitation generator with the same power.

As an improvement of this embodiment, in order to make the generator dissipate heat better, a cooling fan 4 is provided inside the front end cover 5 .

As an improvement of this embodiment, the angle between the central axes of the adjacent coil slots 10 and the central axes of the coil teeth 11 is 5 degrees.

As an improvement to this embodiment, the ratio of the radius of the outer circle of the stator punch 7 to the radius of the inner circle of the hole 8 is 1.5, and its size and structure can ensure that the magnetic saturation problem of the stator core does not occur, and the volume of the stator is small enough to manufacture cost is lower.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions shall be covered by the claims of the present utility model.

Claims (4)

1. a 200kW rare earth permanent-magnetic generator, including stator, rotor core, magnetic shoe, drive end bearing bracket and rear end cap, it is characterized in that: described stator is made up of some stator punchings, the middle part of described stator punching is provided with the circular hole coordinated with rotor core, described stator punching edge is provided with cramp groove, the stator punching of described circular hole outer ring is evenly equipped with 36 coil grooves, described coil groove is T-shaped, the width of rebate of coil groove is 6mm, forming T-shaped coil tooth between adjacent coil groove, the minimum perpendicular distance between described adjacent coil groove is 9mm。

2. a kind of 200kW rare earth permanent-magnetic generator as claimed in claim 1, it is characterised in that: it is provided with radiator fan in described drive end bearing bracket。

3. a kind of 200kW rare earth permanent-magnetic generator as claimed in claim 1, it is characterised in that: the angle between axis and the axis of coil tooth of described adjacent coil groove is 5 degree。

4. a kind of 200kW rare earth permanent-magnetic generator as claimed in claim 1, it is characterised in that: the ratio of described stator punching exradius and circular hole inner circle radius is 1.5。