CN201181894Y

CN201181894Y - Permanent-magnet frequency-conversion full-power electric motor

Info

Publication number: CN201181894Y
Application number: CNU2008200766330U
Authority: CN
Inventors: 杨娜; 杨苗奇; 杜哲
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-27
Filing date: 2008-03-27
Publication date: 2009-01-14
Anticipated expiration: 2018-03-27

Abstract

The utility model discloses a frequency-variable, full-power permanent magnet motor, which comprises a rotor, a stator, permanent magnets, an end cover, a bearing and two exciting windings; wherein, the permanent magnets, the number of which is even, are evenly attached on the inner or the outer wall of the rotor; the space between each two permanent magnets is equal to the width of a permanent magnet; the magnetic poles of two adjacent permanent magnets are not the same; the stator is provided with salient poles, the number of which is even; the width of each salient pole is larger than the width of each permanent magnet; and the two exciting windings are intervallically lapped on the salient poles of the stator. The motor has the advantages of low cost, good product consistency, large torque, nonstop phase change, no volume power waste, and the like.

Description

Permanent magnetism frequency conversion total power motor

Technical field

The utility model relates to a kind of motor, especially a kind of permanent magnetism frequency conversion total power motor.

Background technology

The permanent-magnetic brush-less DC motor is as the main drive motors of electric motor car, its efficient, fault repair rate and other technical parameters have all reached more satisfactory state, but its volume is bigger, relatively heavier, because its drive pattern is three-phase six states, in energising, 1/3rd are in acting intermittently during the excitation acting, fail summation watt rating is performed to optimum state, have the waste of summation watt rating, when simultaneously silicon steel sheet is made waste more serious, generally have only the utilance of 30%-40%, and the rule notch of most of dc brushless motors is about 2mm, be difficult to roll off the production line, can only adopt the manual wire embedding, homogeneity of product is poor, production efficiency is low, therefore, how under the situation that does not reduce power, reduce its bulking value, increase moment of torsion, reduce cost, improve climbing capacity, become the direction of those skilled in the art's research and development.

The utility model content

The utility model technical issues that need to address provide a kind of commutation process does not have intermittence, no temporal power waste, steady quality, the low big permanent magnetism frequency conversion total power motor of moment of torsion of cost.

For addressing the above problem, technical solution adopted in the utility model is: a kind of permanent magnetism frequency conversion total power motor, comprise rotor, stator, permanent-magnet, end cap, bearing, excitation winding, wherein permanent-magnet quantity is even number, evenly be affixed on rotor inner wall (outside is rotor) or the outer wall (inner is rotor), spacing between two permanent-magnets is the width of a permanent-magnet, and the magnetic pole of two adjacent permanent-magnets is an opposite pole, its stator is the stator of salient-pole structure, salient pole quantity is even number and its salient pole partial width width greater than permanent-magnet, its excitation winding is totally two windings, by lap wound is on the salient pole of stator at interval, electric wire is all drawn outside motor in the two ends of excitation winding.

Improvement of the present utility model is: the salient pole of stator is uniformly distributed on the stator, its width is greater than the width of permanent-magnet, permanent-magnet width less than twice, rule recess width between its two salient pole equates with the salient pole width, the salient pole of stator is provided with sensing element, its quantity is two, is arranged at respectively on two adjacent salient poles.

Adopt the beneficial effect that technique scheme produced to be: owing to the interval of permanent-magnet by the permanent-magnet width evenly distributes, conventional motors has been saved 50% magnetic material relatively, the salient pole stator structure, the salient pole width equates with the line embedding groove width, when making, adopts by the salient pole stator method cutting that liquidates, compare with the utilance of conventional motors 30-40%, stock utilization can reach more than 98%, and because rule notch broad, can adopt the machine rule fully, guarantee that consistency of product and quality stability have improved production efficiency, have reduced the product material cost, excitation winding adopts two-phase four condition working method, electromagnetism and permanent magnetism with the form of the push-and-pull process of finishing the work, make the working point be subjected to the force action of thrust and pulling force mutually, thereby moment of torsion is increased, commutation process does not have intermittently, no summation watt rating waste.

Description of drawings

Fig. 1 is the utility model external rotor electric machine structural representation;

Fig. 2 is the utility model inner rotor type motor structural representation.

Wherein: 1, rotor, 2, permanent-magnet, 3, salient pole, 4, support, 5, bearing, 6, axle, 7, end cap, 8, sensing element, 9, winding A, 10, winding B, 11, the motor lead-out wire.

Embodiment

Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:

Embodiment 1:

(outside is a rotor to an external rotor electric machine of the present utility model, inside is stator) as shown in Figure 1, comprise rotor 1, stator, be fixed on end cap 7 on the rotor 1, be embedded in the bearing 5 on the end cap 7, evenly pasting quantity on the inwall of rotor is the permanent-magnet 2 of even number, interval between two permanent-magnets 2 is equivalent to the width of a permanent-magnet 2, and the magnetic pole of two adjacent permanent-magnets 2 is an opposite pole; The bearing 5 that is embedded on the end cap 7 also is fixed on the axle 6 simultaneously, axle 6 is fixed on the stator support 4, fixed stator on support 4, the salient pole stator structure, the salient pole 3 of stator is uniformly distributed on the stator with even number, its width is greater than the width of permanent-magnet 2, permanent-magnet 2 width less than twice, rule recess width between its two salient pole equates with the salient pole width, and on the salient pole of stator, be provided with sensing element 8, its quantity is two, be arranged at respectively on two adjacent salient poles 3, on the salient pole 3 of stator, be wound with winding A9 altogether, two groups of windings of winding B10, two groups of windings are wound on the salient pole of stator the tap A of two groups of windings with the form of interval lap wound, A ', B, B ' outputs to the motor outside by motor lead-out wire 11 from the axle center hole of stator respectively.

Embodiment 2:

As shown in Figure 2, this embodiment is that (outside be stator to an inner rotor type motor, inside is rotor), be that with the difference of embodiment 1 this embodiment comprises rotor 1, stator, be fixed on the end cap 7 on the stator, be embedded in the bearing 5 on the end cap 7, this bearing 5 also is fixed on the axle 6 of rotor simultaneously, armature spindle is fixed on the circular support 4, evenly pasting quantity on the outer wall of circular support 4 is the permanent-magnet 2 of even number, constitute rotor, stator and shell are connected as a single entity, adopt salient-pole structure, on the salient pole 3 of stator, be wound with winding A9 altogether, two groups of windings of winding B10, two groups of windings are wound on the salient pole of stator the tap A of two groups of windings with the form of interval lap wound, A ', B, B ' outputs to the motor outside by motor lead-out wire 11 from stator casing respectively.

Claims

1, a kind of permanent magnetism frequency conversion total power motor, comprise rotor (1), stator, permanent-magnet (2), end cap (7), bearing (5), excitation winding, it is characterized in that: permanent-magnet (2) quantity is even number, evenly be affixed on rotor inner wall or the outer wall, spacing between two permanent-magnets (2) is the width of a permanent-magnet (2), and the magnetic pole of adjacent two permanent-magnets (2) is an opposite pole, described stator is the stator of salient-pole structure, salient pole (3) quantity is even number and its salient pole partial width width greater than permanent-magnet (2), described excitation winding is totally two windings, presses the interval lap wound on the salient pole (3) of stator.

2, permanent magnetism frequency conversion total power motor according to claim 1 is characterized in that electric wire is all drawn outside motor in the two ends of described excitation winding.

3, permanent magnetism frequency conversion total power motor according to claim 1, the salient pole (3) that it is characterized in that described stator is uniformly distributed on the stator, its width is greater than the width of permanent-magnet (2), less than permanent-magnet (2) width of twice, the rule recess width between its two salient pole equates with the salient pole width.

4, according to claim 1,3 described permanent magnetism frequency conversion total power motors, it is characterized in that the salient pole (3) of described stator is provided with sensing element (8), its quantity is two, is arranged at respectively on adjacent two salient poles (3).