CN2847653Y - Short magnetic circuit mixed exciting switch magnetic resistance motor - Google Patents

Abstract

The utility model provides a short magnetic circuit mixed excitation switch reluctance motor, which relates to a mixed excitation switch reluctance motor. The utility model has the purpose to solve the problems that the space utilization rate of the mixed excitation switch reluctance motor is low, and the torque of the mixed excitation switch reluctance motor is not smooth. A plurality of stator grooves (1-1) are evenly arranged on the inner cylindrical surface of a stator (1) of the utility model, the length direction of the stator groove (1-1) is parallel to an axial lead of the stator (1) and penetrates through the inner cylindrical surface of the stator (1), and the thickness of a pole body (1-2) which is arranged between every two stator grooves (1-1) is all equal. A permanent magnet (4) is inserted into each stator groove (1-1), an N pole and an S pole of the permanent magnet (4) are respectively connected with the two vertical wall surfaces of the stator groove (1-1), and an excitation winding (3) is coiled on the root of each pole body (1-2) of the stator (1). The motor stator which is designed by the utility model is easy to insert wires, and moreover, the space utilization rate of the stator can be increased, the efficiency of the motor can be increased and the torque ripple of the motor can be reduced.

Description

Short magnetic circuit mixing exciting switch Magnet resistance motor

Technical field

The utility model relates to a kind of Hybrid Excitation Switched Reluctance Motor, belongs to machine field.

Background technology

Existing switched reluctance machines, its stator, rotor are salient-pole structure, and by the stator excitation winding is switched on successively, stator poles and rotor pole interact and produce torque.Owing to both do not had winding on the rotor, do not have permanent magnet, so motor be simple in structure, reliable yet.But all do not use permanent magnet just because of stator and rotor,, just need big exciting power, so both limited the motor properties volume ratio, strengthened the cost of drive system again in order to obtain big output torque.Publication number provides a kind of Hybrid Excitation Switched Reluctance Motor for the patent of CN1560987A, though it can solve the problems referred to above, but its stator slot is divided into sipes and narrow groove, there is the gap in the back between sipes interior loop and permanent magnet so roll off the production line, cause space availability ratio to reduce, torque is unsmooth.

The utility model content

In order to solve the low and rough problem of torque of Hybrid Excitation Switched Reluctance Motor space availability ratio, the utility model provides a kind of short magnetic circuit mixing exciting switch Magnet resistance motor.

Motor of the present utility model is made up of stator, rotor, excitation winding and a plurality of permanent magnet; Rotor is the cylinder that permeability magnetic material is made, and evenly has a plurality of deep trouths on the external cylindrical surface of rotor, and the center of rotation line parallel of the length direction of deep trouth and rotor also runs through the outer cylinder surface of rotor; Stator is the cylindrical sleeve that permeability magnetic material is made, and stator is enclosed within the outside of rotor, and makes between the external cylindrical surface of the inner cylinder face of stator and rotor and be provided with air gap, and the axial line of stator and the rotational axis line of rotor coincide simultaneously; Evenly have a plurality of stator slots on the inner cylinder face of stator, the length direction of stator slot and the axis parallel of stator also run through the inner periphery of stator, and the thickness of the pole body between per two stator slots all equates; Be inlaid with a permanent magnet in each stator slot, the N utmost point of permanent magnet and the S utmost point are connected two perpendicular walls of stator slot respectively, all are wound with the excitation winding on the root of each pole body of stator.

Operation principle: when the excitation winding no power, the magnetic line of force of permanent magnet does not pass through air gap, but passes through the pole body and the yoke portion closure of stator; When excitation winding was alived, the magnetic line of force path of the path of its electric excitation magnetic line of force and permanent magnet formed parallel circuits, and two magnetic fields form flux circuit by stator pole body, air gap, rotor.On-off action by electric excitation magnetic potential (excitation winding electric current logical and disconnected) is controlled the path and the size of magnetic flux power of the magnetic line of force of permanent magnet, realizes that the torque of motor is controlled.Because the inner cylinder face of the utility model stator is evenly to have a plurality of grooves, so brought following advantage: 1, the staff can evenly be rolled off the production line when rule, is easy to the winding dynamics of control coil; 2, very close to each other in the stator slot, improved space availability ratio; 3, a permanent magnet can be installed in each stator slot, improve efficiency of motor, reduce the torque pulsation of motor.The utility model has the applications well prospect at robot, Digit Control Machine Tool and motor vehicle etc.The utlity model has very high ratio of performance and volume and performance weight ratio, can use, also can use as generator as motor, and easy care simple in structure.

Description of drawings

Fig. 1 is a section structure schematic diagram of the present utility model, and Fig. 2 is the A-A cutaway view of Fig. 1.

Embodiment

Embodiment one: in conjunction with Fig. 1, Fig. 2 present embodiment is described, this embodiment is made up of stator 1, rotor 2, excitation winding 3 and a plurality of permanent magnet 4; Rotor 2 is cylinders that permeability magnetic material is made, and evenly has a plurality of deep trouth 2-1 on the external cylindrical surface of rotor 2, and the center of rotation line parallel of the length direction of deep trouth 2-1 and rotor 2 also runs through the outer cylinder surface of rotor 2; Stator 1 is the cylindrical sleeve that permeability magnetic material is made, and stator 1 is enclosed within the outside of rotor 2, and makes between the external cylindrical surface of the inner cylinder face of stator 1 and rotor 2 and be provided with air gap 5, and the axial line of stator 1 and the rotational axis line of rotor 2 coincide simultaneously; Evenly have a plurality of stator slot 1-1 on the inner cylinder face of stator 1, the axis parallel of the length direction of stator slot 1-1 and stator 1 also runs through the inner periphery of stator 1, and the thickness of the pole body 1-2 between per two stator slot 1-1 all equates; Be inlaid with a permanent magnet 4 among each stator slot 1-1, the N utmost point of permanent magnet 4 and the S utmost point are connected two perpendicular walls of stator slot 1-1 respectively, all are wound with excitation winding 3 on the root of each pole body 1-2 of stator 1.

Embodiment two: the stator 1 of this embodiment selects for use the silicon steel sheet stack to make, and rotor 2 selects for use the silicon steel sheet stack to make.Other composition is identical with embodiment one with annexation.

Embodiment three: the magnetic line of force direction that the excitation winding 3 of this embodiment produces is consistent with the magnetic line of force direction of permanent magnet 4.Other composition is identical with embodiment one with annexation.The utility model organically combines tangential energized circuit of permanent magnet and electric energized circuit.

Claims (1)

1, short magnetic circuit mixing exciting switch Magnet resistance motor, it is made up of stator (1), rotor (2), excitation winding (3) and a plurality of permanent magnet (4); Rotor (2) is the cylinder that permeability magnetic material is made, and evenly has a plurality of deep trouths (2-1) on the external cylindrical surface of rotor (2), and the center of rotation line parallel of the length direction of deep trouth (2-1) and rotor (2) also runs through the outer cylinder surface of rotor (2); Stator (1) is the cylindrical sleeve that permeability magnetic material is made, stator (1) is enclosed within the outside of rotor (2), and make between the external cylindrical surface of the inner cylinder face of stator (1) and rotor (2) and be provided with air gap (5), the axial line of stator (1) and the rotational axis line of rotor (2) coincide simultaneously; It is characterized in that evenly having a plurality of stator slots (1-1) on its inner cylinder face of stator (1), the axis parallel of the length direction of stator slot (1-1) and stator (1) also runs through the inner periphery of stator (1), and the thickness of the pole body (1-2) between per two stator slots (1-1) all equates; Be inlaid with a permanent magnet (4) in each stator slot (1-1), the N utmost point of permanent magnet (4) and the S utmost point are connected two perpendicular walls of stator slot (1-1) respectively, all are wound with excitation winding (3) on the root of each pole body (1-2) of stator (1).