A kind of vehicle-mounted hybrid excitation generator
The invention belongs to hybrid excitation generator fields, more particularly, to a kind of vehicle-mounted hybrid excitation generator.
In recent years, the raising of automotive automation and comfortableization degree causes vehicle-mounted electric quantity to be gradually increased.Generator is as vapour
The important component of vehicle increases accordingly its performance requirement, therefore the high performance generator of research and development becomes current motor row
The developing direction of industry and the growth point of production capacity.
Mobile generator is used at present mainly following two classes motor: the first kind is electric excitation generator, and the second class is
Permanent magnet synchronous motor, electric excitation generator has wider voltage regulation limits, but due to the presence of excitation winding, cause compared with
Big excitation copper loss, reduces the efficiency of motor；Meanwhile the components such as brush cause the reliable life of motor to reduce, Permanent Magnet and Electric
Machine has many advantages, such as that power density is high, small in size, high-efficient, but due to its permanent magnet excitation, output voltage adjusts difficult.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of vehicle-mounted hybrid excitation generator,
By the design to its key component stator and rotor, so that rotor is arranged between stator, annular central excitation winding setting
Inside magnetic conductive shell and it is coated with rotor, its object is to make full use of volume shared by entire motor, mixing is thus solved and encourages
Magnetic winding electric machine volume is big, the difficult technical problem low with transfer efficiency of adjustment of field excitation.
To achieve the above object, it is proposed, according to the invention, provide a kind of vehicle-mounted hybrid excitation generator, which is characterized in that should
Generator includes magnetic conductive shell and the stator, rotor, excitation winding and the shaft that are arranged in the magnetic conductive shell,
The stator includes magnetic conductive shell, stator core, the armature winding being arranged on the stator core and excitation winding,
The rotor is arranged between the stator core that one group is oppositely arranged, and in a ring, the rotor is coated on this to the excitation winding
In excitation winding, the shaft is the central axis of the magnetic conductive shell, stator, rotor and excitation winding, and the shaft rotates band
Move the rotor rotation；
The rotor includes rotor core, permanent magnet and iron core block, and the two sides of the rotor core are provided with quantity phase
Same multiple iron core blocks and permanent magnet, wherein the iron core block and permanent magnet are along the circumferencial direction of the rotor core side
It staggeredly and equidistantly arranges, the magnetic flux that the permanent magnet generates is superimposed with the magnetic flux that the excitation winding generates, so as to form mixed
Close magnetic flux.
It is further preferred that the iron core block of rotor core side is corresponding with the permanent magnet of the other side in the rotor.
It is further preferred that be provided with air gap between the rotor and stator, and rotor is arranged in one group and is oppositely arranged
Center between stator, so that the air gap separation between the rotor and the stator of two sides is identical.
It is further preferred that the magnetizing direction of the multiple permanent magnet is all the same.
It is further preferred that the stator core is suppressed by silicon steel plate stacking or soft-magnetic composite material.
It is further preferred that the iron core block and rotor core be all made of steel forging make, silicon steel plate stacking or soft magnetism it is compound
Material is made.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
1, vehicle-mounted hybrid excitation generator provided by the invention, the motor by be coated on the outside of rotor circular excitation around
Group, the permanent magnet that is equipped with of cooperation rotor core adjust excitation jointly, while having concentrated composite excitation and axial-flux electric machine
Advantage increases range of regulation so that excitation property is adjustable；
2, rotor is coated in excitation winding, the annular by the present invention by using by annular central excitation winding configuration
Motor space is effectively utilized in the setting of excitation winding, so that integrated motor is small in size；
3, the present invention is by the way that all components are arranged in the shell, and concentrically axis, and axial dimension is short, torque density and function
Rate density is high, remains the original advantage of axial-flux electric machine, the field particularly suitable for limited space.
Detailed description of the invention
Fig. 1 is the three dimensional structure diagram of hybrid excitation generator for automobile of the present invention；
Fig. 2 is the rotor structure figure of hybrid excitation generator for automobile of the present invention；
Fig. 3 is the semi-cutaway of hybrid excitation generator for automobile of the present invention；
Fig. 4 is the permanent magnet excitation magnetic circuit schematic diagram of hybrid excitation generator for automobile of the present invention；
Fig. 5 is the electrical excitation magnetic circuit schematic diagram of hybrid excitation generator for automobile of the present invention.
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, in which:
1- magnetic conductive shell, 2- stator core, 3- armature winding, 4- excitation winding, 5- permanent magnet, 6- iron core block, 7- rotor
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a kind of vehicle-mounted hybrid excitation generator, including magnetic conductive shell 1, stator iron
Core 2, armature winding 3, excitation winding 4, permanent magnet 5, iron core block 6 and rotor core 7.As shown in Fig. 2, rotor core 7 is disc-shaped,
Two sides are respectively provided with M permanent magnet 5 and M iron core block 6, and M permanent magnet 5 and M iron core block 6 are close to rotor core 7.Often
The M permanent magnet 5 of side and M iron core block 6 are circumferentially uniformly distributed along rotor core, and are staggeredly placed equidistant with；M iron core of side
The M permanent magnet 5 of block 6 and the other side is axially opposing to answer；2M permanent magnet 5,2M iron core block 6 and rotor core 7 constitute motor
Rotor.As shown in figure 3, rotor is located at the centre of two stator cores 2, three's coaxial arrangement；Rotor two sides and two stators
The axial air-gap interval of iron core 2 is equal；The structure size of two stator cores 2 is identical；Two sets of armature winding 3 are separately positioned on two
On a stator core 2；Magnetic conductive shell 1 is coaxially mounted on stator core 2；Excitation winding is arranged inside magnetic conductive shell, will
Rotor coats wherein；Magnetic conductive shell 1 is connected with stator core 2, for providing magnetic flux path.
Further, stator core 2 is suppressed using silicon steel plate stacking or soft-magnetic composite material.
Further, iron core block 4 and the use of rotor core 7 are made by steel forging, silicon steel plate stacking or soft-magnetic composite material are suppressed
Further, the magnetizing direction of 2M permanent magnet 5 is identical, and M is positive integer.
It is a pair of of pole mixed excitation generator in the embodiment of the present invention, includes two permanent magnets, two iron cores in rotor
Block, the two sides of rotor core have a permanent magnet and an iron core block respectively, there is air gap, rotor and two sides between rotor and stator
The air gap separation of stator is equal；The structure size of two stator cores 2 is identical；Two sets of threephase armature windings 3 are separately positioned on two
On a stator core 2；Magnetic conductive shell 1 is connected with stator core 2, for providing magnetic flux path.
The operation logic of generator in the present embodiment is as follows:
It is passed through in excitation winding 3 and generates the air-gap flux direction direct current contrary with the air-gap flux that permanent magnet generates
Exciting current, magnetic flux are made of two parts: the magnetic flux that the magnetic flux and excitation winding that permanent magnet generates generate.Permanent magnet generates
Magnetic flux be formed by magnetic circuit are as follows: permanent magnet → air gap → stator core → magnetic conductive shell → stator core → air gap → forever
Magnet → rotor core → permanent magnet, as shown in Figure 4；The magnetic flux that excitation winding generates after being powered is formed by magnetic circuit are as follows: iron core
Block → air gap → stator core → magnetic conductive shell → stator core → air gap → iron core block → rotor core → iron core block, such as Fig. 5
It is shown.The magnetic flux that two ways generates is overlapped mutually to form final air-gap flux.When prime mover dragging motor rotor structure revolves
When turning, the magnetic linkage of 3 hinges of armature winding changes, to generate electromotive force.By adjusting in circular excitation winding 4
The size and Orientation of exciting current adjusts air gap resultant magnetic field, to adjust the size of winding back emf.
Vehicle-mounted hybrid excitation generator proposed by the present invention, makes output voltage flexibly may be used by the way of composite excitation
It adjusts, increases range of regulation；Using annular central excitation winding configuration, motor space is effectively utilized；Motor is axial simultaneously
Size is short and power density is high, the application fields such as automobile particularly suitable for limited space.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.