CN204258455U - A kind of Novel electric excitation biconvex electrode electric machine stator punching - Google Patents

Abstract

The utility model provides a novel electric excitation double salient motor stator stamping sheet, which belongs to the technical field of motor design. There are two different slots evenly distributed on the inner edge of the stator punch. The first slot is trapezoidal, and the width of the slot bottom is greater than the width of the slot. The second slot is rectangular, and the width of the slot bottom is equal to the slot. Width; there are groove shoulders between the notch and the bottom of the two groove types, and the groove shoulders are rounded and raised; the first groove type and the second groove type are distributed at intervals. Compared with ordinary punching sheets, the utility model has the advantages of not only reducing the cost, but also ensuring the performance of the motor.

Description

Stator punching of a new type of electrically excited doubly salient pole motor

technical field

The utility model relates to a novel electric excitation double salient pole motor stator stamping sheet, which belongs to the technical field of motor design.

Background technique

The motor is a device that realizes electric energy, and it plays an irreplaceable role in various fields of the national economy and people's daily life. At present, DC speed-regulating motors and high-voltage motors occupy a large proportion in the industry, but because DC speed-regulating motors have brushes, mechanical commutation will generate sparks, so they cannot be used in flammable, explosive and harsh environments; and frequency conversion motors The speed range is small.

Electric excitation doubly salient motor is a new type of energy-saving motor that appeared in the 1990s with the rapid development of power electronics and microelectrics. Compared with traditional motors, it has significant advantages such as simple structure, flexible control, fast dynamic response, and good speed regulation performance. For the structure and heat dissipation of the electrically excited doubly salient motor, further research and design are still needed in order to improve the performance of the motor.

Electric excitation double salient pole high speed motor is a product developed on the basis of mature products switched reluctance motor and permanent magnet double salient pole motor. This motor has the advantages of switched reluctance motor and permanent magnet double salient motor, and replaces the permanent magnet structure of the motor with electric excitation, which makes the motor structure and manufacturing process simpler, and the rotor structure is simpler, especially suitable for high-speed operation .

The utility model relates to the design of the punching piece of the rotor of the electric excitation double salient pole motor. The magnetic field is the basis for the motor to achieve electromechanical energy conversion. A good punch not only achieves good magnetic permeability, which makes the performance of the motor more prominent; moreover, it can also have better heat dissipation conditions for the motor, so as to improve the performance of the motor.

Contents of the invention

The problem to be solved by the utility model is to design a new type of rotor punch, which is suitable for high-electric excitation double salient pole motors (380V75kW 6000rpm), which can not only reduce the cost, but also improve the performance of the motor.

The technical scheme that the utility model adopts is as follows:

A new type of electric excitation doubly salient pole motor stator punching, there are two different grooves evenly distributed on the inner edge of the stator punching, the first groove is trapezoidal, the width of the groove bottom is greater than the width of the slot, the second The first type of groove is rectangular, and the width of the bottom of the groove is equal to the width of the notch; there are groove shoulders between the groove and the bottom of the two groove types, and the groove shoulders are rounded corners; the first groove type Distributed at intervals with the second groove type.

The outer diameter of the stator punch is 1180mm, the inner diameter is 1000mm, and the groove depth is 60mm.

Further, the notch width of the first groove type is 32.719mm, the distance from the notch to the groove shoulder is 1mm, the height of the groove shoulder is 4mm, the width of the groove bottom is 56.412mm, and the inclination angle of the rounded protrusion relative to the groove axis is 30 °, the radius of the fillet is 1mm; the width of the notch of the second groove type is 32.649mm, the distance from the notch to the shoulder of the groove is 0.5mm, the height of the groove shoulder is 4mm, and the angle of inclination of the fillet protrusion relative to the axis of the groove is 20° , the radius of the fillet is 1mm.

Further, there are 16 structures of the first type of groove, and 32 structures of the second type of groove, and two second groove structures are uniformly arranged between every two first type of groove structures .

The stator iron core made by using the punched sheet of the utility model has the advantages of simple structure, small volume, convenient stacking, etc., and is suitable for the electric excitation double salient pole motor with high power and high rotating speed. The advantages are as follows: 1. Good magnetic conductivity, realizing electromechanical energy conversion, and improving motor performance - reducing loss, improving efficiency, etc.; Heat dissipation conditions; 3. The coil in the slot is more firm, not easy to loosen, and not easy to overflow the slot.

Description of drawings

Fig. 1 is the structural diagram of punching sheet of electric excitation double salient pole motor of the present utility model;

Fig. 2 is an enlarged view of the first groove structure in Fig. 1;

Fig. 3 is an enlarged view of the second groove structure in Fig. 1 .

Detailed ways

The punching structure of the utility model is shown in Figure 1. There are two different groove types evenly distributed on the inner edge of the stator punching plate 1. The first groove type 2 is trapezoidal, and the width of the groove bottom 6 is greater than that of the notch 4. There are 16 slots in total; the second groove type 3 is rectangular, and the width of the slot bottom 6 is equal to the width of the notch 4, and there are 32 slots in total. Two groove 3 structures are evenly arranged between every two groove 2 . The outer diameter of the stator punch is 1180mm, the inner diameter is 1000mm, and the groove depth is 60mm.

As shown in the enlarged diagrams of Figures 2 and 3, groove shoulders 5 are respectively provided between the notch opening 4 and the groove bottom 6 of these two groove types, and the groove shoulders 5 are rounded corners with a radius of 1 mm. The inclination angle θ of the rounded protrusion in the first groove type 2 relative to the groove axis is 30°, and the inclination angle of the rounded protrusion in the second groove type 3 relative to the groove axis is 20°.

The width of notch 4 of the first groove type is 32.719mm, the distance from notch 4 to groove shoulder 5 is 1mm, the height of groove shoulder 5 is 4mm, and the width of groove bottom 6 is 56.412mm; the width of notch 4 of the second groove type is 32.649mm, The distance from the notch 4 to the groove shoulder 5 is 0.5 mm, and the height of the groove shoulder 5 is 4 mm.

Since the stator slot of the electrically excited double salient pole motor contains two types of coils, the excitation coil and the armature coil, the slots of the first slot type 2 contain two types of coils, and the slots of the second slot type 3 only include the armature coils.

The concrete design steps of the structure of the present utility model are as follows:

(1) According to the rated data of the motor, the electromagnetic calculation is performed through the finite element simulation software Ansoft maxwell, and the calculation result is adjusted according to the design result until a good result is obtained.

(2) Combining the finite element simulation software Workbench to calculate the shaft stress and critical speed, and conduct coupling heat simulation calculation with Ansoft maxwell, and adjust the structural size of the motor according to the calculation data results.

(3) Use CAD software to complete the design of the motor structure.

Claims (4)

1. a Novel electric excitation biconvex electrode electric machine stator punching, is characterized in that, the inward flange of described stator punching is evenly distributed with two kinds of different grooveds, the first grooved is trapezoidal shape, slot bottom width is greater than width of rebate, the rectangular shape of the second grooved, and slot bottom width equals width of rebate; Also be respectively equipped with groove shoulder between the notch of these two kinds of grooveds and bottom land, groove shoulder is fillet projection; The first grooved described and the second grooved spaced apart.

2. a kind of Novel electric excitation biconvex electrode electric machine stator punching according to claim 1, is characterized in that, the overall diameter of described stator punching is 1180mm, and interior diameter is 1000mm, groove depth 60mm.

3. a kind of Novel electric excitation biconvex electrode electric machine stator punching according to claim 1 and 2, it is characterized in that, the slot opening 32.719mm of the first grooved described, notch is 1mm to the distance that groove is takeed on, groove shoulder height 4mm, bottom land is wide by 56.412, and fillet is protruding is 30 ° relative to the angle of inclination of fluted shaft line, the radius 1mm of fillet; The slot opening 32.649mm of the second grooved, notch is 0.5mm to the distance that groove is takeed on, groove shoulder height 4mm, and fillet is protruding is 20 ° relative to the angle of inclination of fluted shaft line, the radius 1mm of fillet.

4. a kind of Novel electric excitation biconvex electrode electric machine stator punching according to claim 3, it is characterized in that, the structure of the first grooved described has 16, and the structure of described the second grooved has 32, arranges two the second trench structures between every two the first trench structures.