CN2689571Y

CN2689571Y - Permanent magnbetic motor with lateral magnetic field

Info

Publication number: CN2689571Y
Application number: CN 200420017508
Authority: CN
Inventors: 辜承林; 郭学荣; 陈金涛
Original assignee: Huazhong University of Science and Technology
Current assignee: Huazhong University of Science and Technology
Priority date: 2004-03-22
Filing date: 2004-03-22
Publication date: 2005-03-30
Anticipated expiration: 2014-03-22

Abstract

The utility model discloses a transverse magnetic field motor whose permanent magnets are evenly fixed on one side wall along a circle to form a main pole. A end cover is connected with a bearing to jointly comprise a rotor with the magnetic poles of the permanent magnets. U-shaped silicon sheets are grouped and overlaid to magnetic yokes corresponding to the number of pole pairs of the motor, the magnetic yokes are distributed evenly along the circle and embedded on a bracket orderly to form a U-shaped closed magnetic circuit. Concentrating coils are coiled in a U-shaped slot to form armature windings. The bracket is fixedly connected with an axis, and the bracket, the axis, the windings and the magnetic yokes are served as the stator all together. The armature windings are respectively led out from the middle of the hollow bearing. Each phase in the utility model is mutually independent, and arbitrary multiple phases can be made. The tooth slot structures of the stators and an armature coil are mutually vertical on the space position to make the size of the stator and the size of an energizing coil can not get restriction mutually. The number of each phase of permanent magnet is halved by altering the radical magnetization of the permanent magnet to axial magnetization. The silicon sheets are only needed to be simply fixed on the bracket, connecting mechanisms are not needed to be assisted between different phases of permanent magnets, the space is largely saved, and the turning moment density is larger.

Description

A kind of permanent-magnetic motor with transverse magnetic field

Technical field

The utility model belongs to the magneto technical field, and specifically, it relates to a kind of horizontal magnetic field motor of permanent magnet axial magnetized, and this motor is particularly useful for the direct driving on electric motor car and naval vessel.

Background technology

In the prior art, common magneto since stator (or rotor) tooth and groove on same cross section, its size is restricted mutually, and motor output torque is restricted.For this reason, De Guo professor H.Weh has invented permanent-magnetic motor with transverse magnetic field.The stator teeth groove structure of this motor and armature coil are vertical mutually on the locus, and the main flux in the motor is along the axial circulation of motor, thereby stator dimensions and hot-wire coil is big or small separate, can obtain higher torque and power density.On this basis, professor G.Henneberger of Germany has designed the flat magnetic field structure permanent-magnetic motor with transverse magnetic field (G.Henneberger of monolateral stator, M.Bork.Development of a New Transverse FluxMotor.New Topologies for Permanent Magnet Machines (Digest no:1997/090), 1997, (1): 1-6.).Permanent magnet is attached to rotor surface equably in this motor, and adjacent permanent magnet is magnetized into different polarity respectively.The stator core module of U-shaped is evenly distributed on the whole circumference with the distance of multiple pole span, the permanent magnet polarity of two tooth portion correspondence is opposite, and the auxiliary stator magnetic circuit that placement is made by soft iron material between two adjacent stator cores, form closed magnetic loop, to reduce the influence of contiguous pole pair work main pole.But this electric machine structure complexity is processed very difficultly, and in order to reduce leakage field, is attached between the adjacent vertically permanent magnet of rotor surface and need leaves enough spacings, and axial dimension is bigger.Therefore, this motor is in the middle low power field, and there is very big limitation in the occasion that particularly requires thin type to install, is difficult to extensive use.

Summary of the invention

The purpose of this utility model is to overcome the defective of above-mentioned motor, a kind of permanent-magnetic motor with transverse magnetic field is provided, this motor can shorten axial dimension greatly, and can increase the effective area of air gap when small-power, improves power of motor density, its structural manufacturing process is simple relatively, torque density is big, and stator coil is installed easily and do not had the end loss, and is every independent fully mutually, there is not electromagnetic coupled each other, can high torque (HT) and efficient operation in the rotating speed of broadness and power bracket.

For achieving the above object, a kind of horizontal magnetic field motor that the utility model provides, comprise axle, bearing, permanent magnet pole, silicon steel sheet yoke, armature winding and shell, it is characterized in that: permanent magnet evenly distributes to be fixed on the shell abutment wall along circumference and constitutes main pole, the end cap of shell links to each other with bearing, forms rotor jointly with permanent magnet pole; The grouping of U-shaped silicon steel sheet laminates and the corresponding yoke of motor number of pole-pairs, be uniformly distributed along the circumference, by embedding on support mutually, constitute the U-shaped closed magnetic circuit, ceoncentrically wound coil is wound on and constitutes armature winding in the U-lag, support is fixedlyed connected with axle, they with armature winding and silicon steel sheet yoke as motor stator; Armature winding is drawn in the middle of the bearing of hollow respectively.

Each is separate fully mutually in the utility model, thereby easily makes heterogeneous arbitrarily.The stator teeth groove structure of this motor is vertical mutually on the locus with armature coil, thereby stator dimensions and hot-wire coil can not be restricted mutually, can choose arbitrarily within the specific limits.It is axial magnetized that the utility model changes the permanent magnet diametrical magnetization, and every phase permanent magnet blocks number is reduced by half.The silicon steel sheet that constitutes yoke in the utility model only need be fixed on the support simply, and the bindiny mechanism that need not assist between the homophase permanent magnet, has saved the space greatly, makes torque density bigger.

Description of drawings

Fig. 1 is the longitudinal profile structural representation (because cross-section structure is symmetrical up and down, only indicating the first half among the figure) of a kind of novel transverse magnetic flux permanent magnet motor of the utility model;

Fig. 2 constitutes the silicon steel sheet of yoke and the schematic diagram of armature winding among Fig. 1;

Fig. 3 is motor profile and a permanent magnet pole schematic diagram among Fig. 1.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail:

As shown in Figure 1, the utility model comprises axle 1, bearing 2 and 12, support 3, permanent magnet pole 6, armature winding 7, silicon steel sheet yoke 8, and shell 5, shell 5 comprise abutment wall 9 and end cap 11.

Bearing

2 and 12 is enclosed within on the axle 1, and permanent magnet pole 6 is bonded on the abutment wall 9, and end cap 11 links to each other with 12 with bearing 2, and forms rotors jointly with permanent magnet pole 6; Armature winding 7, silicon steel sheet yoke 8, support 3 are fixedlyed connected with axle 1, as motor stator.Lead-out wire 4, tapping lead-in wire links to each other from the open-cycle controller that the hollow parts of axle 1 is drawn outside the machine with other joins.Controller can adopt traditional approach, also can adopt advanced DSP technique construction.

Figure 2 shows that the structure of a phase silicon steel sheet yoke 8 and armature winding 7, yoke becomes U-shaped, evenly distributes along circumference, is embedded on the support by the U-shaped silicon steel plate stacking fixedly to form together, and ceoncentrically wound coil constitutes armature winding in U-lag.

Figure 3 shows that the structure of abutment wall 9 and permanent magnet pole 6, permanent magnet pole 6 bonds together with abutment wall 9.In the implementation process, can be divided into some groups to magnetic pole along circumference, each several part can be combined the formation circle distribution when needing only last the installation; Certainly, also can adopt other version to be guaranteed.

The essential characteristic that the motor of said structure has is: the U-shaped yoke and the armature winding of motor are orthogonal on the locus, and permanent magnet pole is by axial magnetized.

The utility model also can the position near permanent magnet pole be provided with hall position sensor 10 on the silicon steel sheet yoke being positioned at, and motor is carried out closed-loop control.Wherein position transducer also can adopt other modes, as photoelectric encoder, resolver etc., as long as can detect motor rotor position delicately.

Claims

1, a kind of horizontal magnetic field motor, comprise axle, bearing, permanent magnet pole, silicon steel sheet yoke, armature winding and shell, it is characterized in that: permanent magnet (6) evenly distributes along circumference and is fixed on upward formation main pole of shell abutment wall (9), the end cap of shell (11) links to each other with bearing (2,12), forms rotor jointly with permanent magnet pole (6); U-shaped silicon steel sheet (8) grouping laminates and the corresponding yoke of motor number of pole-pairs, be uniformly distributed along the circumference, by embedding on support (3) mutually, constitute the U-shaped closed magnetic circuit, ceoncentrically wound coil is wound on and constitutes armature winding (7) in the U-lag, support (3) is fixedlyed connected with axle (1), they with armature winding (7) and silicon steel sheet yoke (8) as motor stator; Armature winding is drawn in the middle of the bearing of hollow respectively.

2, motor according to claim 1 is characterized in that: near the permanent magnet pole place position transducer (10) is set on the silicon steel sheet yoke.