CN107508440B - A kind of axial direction multiple-unit stator electrical excitation bipolarity inductor machine - Google Patents
A kind of axial direction multiple-unit stator electrical excitation bipolarity inductor machine Download PDFInfo
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- CN107508440B CN107508440B CN201710916406.8A CN201710916406A CN107508440B CN 107508440 B CN107508440 B CN 107508440B CN 201710916406 A CN201710916406 A CN 201710916406A CN 107508440 B CN107508440 B CN 107508440B
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- stator
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- core
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
- H02K1/243—Rotor cores with salient poles ; Variable reluctance rotors of the claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Synchronous Machinery (AREA)
Abstract
The invention belongs to alternating current generator fields, and disclose a kind of axial multiple-unit stator electrical excitation bipolarity inductor machine.The motor includes rotor core, stator core, armature winding, excitation winding, stator yoke and motor shaft, motor shaft is the central axis of motor, through the stator yoke, the outer surface of the stator yoke is in axial direction provided with multiple excitation windings, stator core is provided between the adjacent excitation winding, stator core is placed with armature winding in the axial direction and is arranged outside excitation winding, it coats excitation winding wherein, the outside of stator core is arranged in rotor core, the annular module being oppositely arranged including multistage, two sides that adjacent annular module is oppositely arranged are provided with the pawl pole of multiple protrusions in a circumferential direction, the pawl pole on ipsilateral is not staggered, polarity is opposite.Through the invention, the magnetic field utilization rate for improving stator electrical excitation inductor machine reduces the self discharge loss of motor, improves the energy storage density and power density of motor.
Description
Technical field
The invention belongs to alternating current generator fields, more particularly, to a kind of bipolar sexuality of axial multiple-unit stator electrical excitation
Answer sub-motor.
Background technique
Energy stores are the key techniques in energy resource system, are the important channels realizing energy efficient and utilizing.Current
Energy storage technologies in, the advantages that Flywheel energy storage technique is simple, easily controllable with its principle and be concerned.In flywheel energy storage
In system, electric energy and converting for mechanical energy are realized using motor and relevant power electronic devices into core, wherein motor
Performance there is large effect to the performance of entire flywheel energy storage system.
Flywheel energy storage system uses the permanent magnet synchronous motor of internal rotor with motor mostly, with high-efficient, power is close
Spend the advantages that high.Due to its high speed rotation, permanent magnet is subjected to larger centrifugal force, it is necessary to security measure be taken to prevent permanent magnet de-
Damage motor is fallen, however permanent magnet clamp device can be such that high-speed permanent magnet motor Performance And Reliability is greatly reduced.Meanwhile in high speed
When idle running, the efficiency that can reduce whole system is lost in the self discharge as caused by permanent magnetic field.In order to solve self discharge damage
Consumption problem, in some flywheel energy storage occasions, using the same polarity formula inductor machine of electrical excitation form, structure is simple,
High reliablity, energy storage density are high.In high speed idle running, cutting exciting current power supply can significantly reduce self discharge damage
Consumption, but since its air-gap field is unipolarity, power density is lower.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of axial multiple-unit stator electrical excitations
Bipolarity inductor machine by the design of electrical excitation winding and rotor claw-pole structure, and uses multiple-unit motor form, by
The technical problem that the idle running self discharge loss that this solves flywheel energy storage system motor is high, power density is low.
To achieve the above object, according to one aspect of the present invention, it is double to provide a kind of axial multiple-unit stator electrical excitation
Polar inductive sub-motor, the motor include rotor core, stator core, armature winding, excitation winding, stator yoke and motor
Axis, which is characterized in that
The motor shaft is the central axis of motor, which runs through the stator yoke, the outer surface of the stator yoke
It is in axial direction provided with the excitation winding of multiple parallel arrangeds, is provided with the stator between the adjacent excitation winding
Iron core, the stator core are provided with armature winding in the axial direction, which is arranged in the outside of the excitation winding, by institute
State excitation winding cladding wherein, the outside of the stator core is arranged in the rotor core, and the outside of the rotor core is also
It is provided with rotor sleeve, and the rotor sleeve is rotated together with the rotor core,
Wherein, the rotor core includes the annular module that multistage is oppositely arranged, what adjacent annular module was oppositely arranged
Two sides are provided with the pawl pole of multiple protrusions in a circumferential direction, and the pawl pole on the different sides is staggered, magnetic
Pole polarity is opposite.
It is further preferred that the both ends of the rotor sleeve are provided with rotor endcap, the rotor sleeve and rotor endcap
Wherein by rotor encapsulation.
It is further preferred that be provided with bearing between the rotor endcap and the motor shaft, the motor shaft and described
Motor bracing strut is provided between stator yoke, which uses non-magnet material, and the both ends of the stator yoke are set
It is equipped with stator end plate, a part as the magnetic excitation circuit that excitation winding is formed.
It is further preferred that the quantity of the excitation winding is M+1, M is the positive integer greater than 1, the stator core
Quantity is M.
It is further preferred that the stator core, stator end plate, stator yoke and rotor core are all made of permeability magnetic material.
It is further preferred that the rotor endcap and rotor sleeve use non-magnet material.
It is further preferred that the section of the pawl pole preferably use it is trapezoidal.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
1, the present invention is by using rotor endcap, the components such as rotor sleeve, stator end plate, motor bracing strut, and passes through and adopt
With firm rotor core structure, the design and armature winding of no permanent magnet and the setting of excitation winding, so that motor is integrally tied
Structure is compact, function is concentrated, and intensity is high, is used in the occasion that motor runs at high speed；
2, present invention employs the settings of excitation winding, and compared with traditional motor, excitation electricity is cut off in idle running
Source, thus excitation winding does not generate magnetic field, therefore reduces rotor core loss, so that self discharge loss is greatly lowered, in addition,
Using excitation winding structure type, air-gap field is conveniently adjusted flexibly；
3, design of the present invention by using the claw-pole structure of multistage annular module, the form of multistage claw-pole structure cooperation,
Pole polarity in the pawl pole of staggered relative setting is on the contrary, the air-gap field for forming excitation winding is bipolarity, effectively
Improve the torque density and power density of motor.
Detailed description of the invention
Fig. 1 is axial multiple-unit stator electrical excitation bipolarity inductor electricity constructed by preferred embodiment according to the invention
The three dimensional structure diagram of machine；
Fig. 2 is axial multiple-unit stator electrical excitation bipolarity inductor electricity constructed by preferred embodiment according to the invention
The cross-sectional view of machine；
Fig. 3 is axial multiple-unit stator electrical excitation bipolarity inductor electricity constructed by preferred embodiment according to the invention
The schematic diagram of the energized circuit formed in machine；
Fig. 4 is axial multiple-unit stator electrical excitation bipolarity inductor electricity constructed by preferred embodiment according to the invention
The rotor core structure schematic diagram of machine.
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, in which:
1- rotor endcap, 2- rotor sleeve, 3- rotor core, 4- armature winding, 5- stator core, 6- motor shaft, 7- axis
It holds, 8- stator end plate, 9- excitation winding, 10- stator yoke, 11- motor bracing strut, 12- magnetic excitation circuit.
Specific embodiment
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.
The present invention provides a kind of axial multiple-unit stator electrical excitation bipolarity inductor machine, implementations according to the present invention
Example by the design of electrical excitation winding and rotor claw-pole structure, and uses multiple-unit motor form, thus solves flywheel energy storage
Technical problem high, that power density is low is lost in system motor idle running self discharge.
Fig. 1 is axial multiple-unit stator electrical excitation bipolarity inductor electricity constructed by preferred embodiment according to the invention
The three dimensional structure diagram of machine, Fig. 2 are that axial multiple-unit stator electrical excitation constructed by preferred embodiment according to the invention is double
The cross-sectional view of polar inductive sub-motor, as depicted in figs. 1 and 2, a kind of axial direction multiple-unit stator electrical excitation bipolarity inductor electricity
Machine, including coaxial mounted rotor endcap 1, rotor sleeve 2, rotor core 3, armature winding 4, stator core 5, motor shaft 6, axis
Hold 7, stator end plate 8, excitation winding 9, stator yoke 10 and motor bracing strut 11；Wherein:
Motor shaft 6 is overlapped setting with the shaft centre line of motor, and motor shaft 6 passes through two annular generator bracing struts 11, and two
End is placed on motor bracing strut 11；Stator yoke 10 is cylindrical shape, and annular is set on motor shaft bracket 11, as motor master
A part of magnetic circuit；M (M >=1, and be integer) section stator core 5 and 9 sets of winding of M+1 collar-shaped central excitation are co-axially located at
On stator yoke 10, and annular central excitation winding 9 and stator core 5 are successively alternately placed as axial, central excitation winding 9
For generating excitation field, Fig. 3 is that axial multiple-unit stator electrical excitation constructed by preferred embodiment according to the invention is bipolar
Property inductor machine in the schematic diagram of energized circuit that is formed, the magnetic excitation circuit 12 formed is as shown in Figure 3；Armature winding 4 wraps
Round annular central excitation winding 9, and embed on M sections of stator cores 5；Two ring-shaped stator end plates 8 are set in stator yoke
10 both ends；There is air gap separation between stator core 5 and rotor core 3, between rotor core 3 and stator end plate 8.
Rotor core 3 is annular claw-pole structure, including M+1 sections, successively axially placed along motor；Two sections of pawls of axial ends
Pole structure is identical, in a circumferential direction, this two sections of claw-pole structures close to 5 side of stator core be respectively uniformly distributed N (N >=
1, and be integer) a pawl pole；Remaining M-1 sections of claw-pole structure is identical, and circumferentially square respectively in the two sides of the M-1 sections of claw-pole structure
To being uniformly distributed N number of pawl pole；Claw-pole structure shape, size on M+1 sections of rotor cores 3 is identical, constitutes the magnetic pole of motor；
In the axial direction, the pawl pole on adjacent claw-pole structure is staggered, formed heteropolarity magnetic pole, and adjacent claw-pole structure it
Between in axial direction and circumferencial direction with equal length air gap separation, Fig. 4 is constructed by preferred embodiment according to the invention
Axial multiple-unit stator electrical excitation bipolarity inductor machine rotor core structure schematic diagram, as shown in Figure 4；Rotor core
3 M+1 section claw-pole structure is fixed on the inner wall of outer rotor sleeve 2；Rotor endcap 1 is closely connect with outer rotor sleeve 2, and logical
Bearing 7 is crossed to be arranged on motor shaft 6；Rotor core 3, rotor endcap 1 and outer rotor sleeve 2 rotate jointly.
Motor bracing strut 11 can be set between motor 6 and stator yoke 10, be also possible to motor shaft 6 across stator magnet
The directly contact of yoke 10 is placed on stator yoke 10, saves motor bracing strut 11.
Illustratively, stator core 5 is suppressed using punching silicon-steel or SMC material.
Illustratively, stator yoke 10 and claw-pole structure 3 are made of permeability magnetic materials such as steel alloys.
Illustratively, rotor endcap 1, rotor sleeve 2 and motor bracing strut 11 are non-magnetic using aluminium alloy or titanium alloy etc.
Material is made.
Illustratively, the section of the pawl pole of rotor core protrusion is trapezoidal, can also be other shapes, concrete shape can root
According to needing to set, the present invention limits not to this, but from the point of view of experiment effect according to the present invention, trapezoidal better effect.
Below as the axial bipolar sexuality of multiple-unit stator electrical excitation of 12 pole of i.e. 3 phase of a specific embodiment of the invention
Sub-motor is answered to further illustrate the present invention.
Motor shaft 6 is overlapped setting with the shaft centre line of motor；Motor shaft 6 passes through two completely identical in structure annular generators
Bracing strut 11, and both ends are placed on motor bracing strut 11；Stator yoke 10 is cylindrical shape, and annular is set in motor shaft bracket 11
On, a part as motor main magnetic circuit；The identical nested structure of stator core 5 and 4 of 3 segment structures, size, the identical annular of size
9 sets of central excitation winding are co-axially located on stator yoke 10, and annular central excitation winding 9 and stator core 5 are successively pressed
Axial alternately to place, for central excitation winding 9 for generating excitation field, the magnetic excitation circuit 12 formed is as shown in Figure 3；Armature around
Group 4 surrounds annular central excitation winding 9, and embeds on 3 sections of stator cores 5；Two identical annulars of structure and size
Stator end plate 8 is set in the both ends of stator yoke 10；There is identical diameter between stator core 5, stator end plate 8 and rotor core 3
To gas length.
Rotor core 3 is annular claw-pole structure, including 4 sections, successively axially placed along motor；Two sections of pawl poles of axial ends
Structure is identical, and in a circumferential direction, this two sections of claw-pole structures are being respectively uniformly distributed 6 pawl poles close to 5 side of stator core；
Remaining 2 sections of claw-pole structure is identical, and is distributed uniformly and circumferentially 6 pawl poles respectively in the two sides of 2 sections of claw-pole structures；Rotor
Pawl pole shape, size on 4 sections of claw-pole structures of iron core 3 is identical, constitutes the magnetic pole of motor；In the axial direction, adjacent
Rotor core 3 on pawl pole be staggered, heteropolarity magnetic pole is formed, and in axis between the adjacent claw-pole structure of rotor core 3
To on circumferencial direction with equal length air gap separation, as shown in Figure 4；4 sections of claw-pole structures of rotor core 3 are fixed on outer
On the inner wall of rotor sleeve 2；Rotor endcap 1 is closely connect with outer rotor sleeve 2, and is arranged by bearing 7 in motor shaft 6
On；Rotor core 3, rotor endcap 1 and outer rotor sleeve 2 rotate jointly.
The operation logic of this motor is as follows:
According to magnetic resistance minimal closure principle, DC excitation electric current, the excitation of formation are passed through in annular central excitation winding 5
Magnetic circuit is closed by stator core 5 or stator end plate 8, air gap, rotor core 3, as shown in figure 3, adjacent claw-pole structure
On pawl pole between heteropolarity each other, as shown in Figure 4.The air-gap field that 6 pairs of pole is formed in the air gap of an axial plane, makees
For generator in use, rotor core 3 drags rotation by prime mover, the magnetic linkage of hinge changes in 3 phase armature winding, incudes
Potential out, thus realize the generator operation of motor, meanwhile, by adjusting the big of the exciting current in annular central excitation winding 5
Small and direction adjusts air-gap field, so that the adjusting of generator potential is realized, as motor in use, in armature winding
It is passed through three-phase symmetrical electric current, driving pawl pole motor powered operation, by adjusting the big of exciting current in annular central excitation winding 5
Small and direction, the smooth adjusting air-gap field of energy, to facilitate the weak magnetic control for realizing motor.
A kind of axial multiple-unit stator electrical excitation bipolarity inductor machine proposed by the present invention, rotor core is using solid
Steel forging is made, and the subsidiary components such as no permanent magnet and winding, structure is simple, and intensity is high, can high-speed cruising；Meanwhile it using more
The form of section claw-pole structure cooperation, the air-gap field that excitation winding is formed is bipolarity, and the torque for effectively improving motor is close
Degree and power density；Finally, air-gap field is conveniently adjusted flexibly present invention employs electrical excitation structure type.It is stored up in flywheel
In energy system, when motor high speed idle running, exciting current can be cut off, be greatly lowered as caused by core loss and put certainly
Electrical loss improves the efficiency of whole system.The motor is suitably applied the high-speed cruisings occasion such as flywheel energy storage.
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.
Claims (5)
1. a kind of axial direction multiple-unit stator electrical excitation bipolarity inductor machine, which includes rotor core (3), stator core
(5), armature winding (4), excitation winding (9), stator yoke (10) and motor shaft (6), which is characterized in that
The motor shaft (6) is the central axis of motor, which runs through the stator yoke (10), the appearance of the stator yoke
Face is in axial direction provided with the excitation winding (9) of multiple parallel arrangeds, is arranged between the adjacent excitation winding
State stator core (5), which is provided with armature winding (4) in the axial direction, the armature winding setting the excitation around
The outside of group (9), wherein by excitation winding cladding, rotor core (3) setting is in the outer of the stator core (5)
Portion, the outside of the rotor core (3) is additionally provided with rotor sleeve (2), and the rotor sleeve is rotated together with the rotor core,
Wherein, the rotor core (3) includes the annular module that multistage is oppositely arranged, adjacent annular module be oppositely arranged two
A side is provided with the pawl pole of multiple protrusions in a circumferential direction, and the pawl pole on the different sides is staggered, magnetic pole
Polarity is opposite；
The both ends of the rotor sleeve (2) are provided with rotor endcap (1), and the rotor sleeve and rotor endcap seal the rotor
It is installed therein；Motor bracing strut (11) are provided between the motor shaft (6) and the stator yoke (10), the motor bracing strut
Using non-magnet material, the both ends of the stator yoke are provided with stator end plate (8), the magnetic excitation circuit formed as excitation winding
A part.
2. a kind of axial multiple-unit stator electrical excitation bipolarity inductor machine as described in claim 1, which is characterized in that institute
It states and is provided with bearing (7) between rotor endcap and the motor shaft.
3. a kind of axial multiple-unit stator electrical excitation bipolarity inductor machine as described in claim 1, which is characterized in that institute
The quantity for stating excitation winding (9) is M+1, and M is the positive integer greater than 1, and the quantity of the stator core is M.
4. special such as a kind of described in any item axial multiple-unit stator electrical excitation bipolarity inductor machines of claims 1 or 2
Sign is that the rotor endcap (1) and rotor sleeve (2) use non-magnet material.
5. a kind of axial multiple-unit stator electrical excitation bipolarity inductor machine as claimed in claim 1 or 2, feature exist
In the section of the pawl pole is using trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710916406.8A CN107508440B (en) | 2017-09-30 | 2017-09-30 | A kind of axial direction multiple-unit stator electrical excitation bipolarity inductor machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710916406.8A CN107508440B (en) | 2017-09-30 | 2017-09-30 | A kind of axial direction multiple-unit stator electrical excitation bipolarity inductor machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107508440A CN107508440A (en) | 2017-12-22 |
| CN107508440B true CN107508440B (en) | 2019-06-28 |
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| CN201710916406.8A Active CN107508440B (en) | 2017-09-30 | 2017-09-30 | A kind of axial direction multiple-unit stator electrical excitation bipolarity inductor machine |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450127A (en) * | 2018-12-25 | 2019-03-08 | 清华大学苏州汽车研究院（吴江） | A kind of motor stator and motor in axial magnetic field |
| CN112769260A (en) * | 2020-12-28 | 2021-05-07 | 中国原子能科学研究院 | Rotor of special motor for compensating adjusting rod driving mechanism |
| CN113300532B (en) * | 2021-05-26 | 2022-07-12 | 华中科技大学 | Stator electro-magnetic flywheel energy storage motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3223866A (en) * | 1960-09-13 | 1965-12-14 | Trw Inc | Alternator |
| US3493800A (en) * | 1968-06-12 | 1970-02-03 | Edward L Barrett | Brushless alternator |
| CN101436796A (en) * | 2007-11-16 | 2009-05-20 | 株式会社日立制作所 | Rotating electric machine and vehicle-mounted electric machine system equipped with the same |
| CN104065229A (en) * | 2014-06-10 | 2014-09-24 | 华中科技大学 | Electric power generation integration inductor motor |
-
2017
- 2017-09-30 CN CN201710916406.8A patent/CN107508440B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3223866A (en) * | 1960-09-13 | 1965-12-14 | Trw Inc | Alternator |
| US3493800A (en) * | 1968-06-12 | 1970-02-03 | Edward L Barrett | Brushless alternator |
| CN101436796A (en) * | 2007-11-16 | 2009-05-20 | 株式会社日立制作所 | Rotating electric machine and vehicle-mounted electric machine system equipped with the same |
| CN104065229A (en) * | 2014-06-10 | 2014-09-24 | 华中科技大学 | Electric power generation integration inductor motor |
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| CN107508440A (en) | 2017-12-22 |
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