CN107612286A - A kind of combined type brushless electric machine - Google Patents
A kind of combined type brushless electric machine Download PDFInfo
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- CN107612286A CN107612286A CN201711084709.4A CN201711084709A CN107612286A CN 107612286 A CN107612286 A CN 107612286A CN 201711084709 A CN201711084709 A CN 201711084709A CN 107612286 A CN107612286 A CN 107612286A
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Abstract
The invention discloses a kind of combined type brushless electric machine, including motor casing（1）, have the first motor and the second motor side by side in motor casing, the first motor is by the first stator from outside to inside（2）, adjustable magnetic ring（3）And internal rotor（4）Brushless double-rotor machine is formed, the second motor is by the second stator（9）And rotor（10）Form permanent-magnetic electric machine；Engine output shaft（13）With internal rotor（4）It is connected；Main reducing gear input shaft（15）Modulation rotor output shaft is connected through the second machine shaft（14）, the first motor and the second motor coaxle heart line.It is an advantage of the invention that：Motor brushless, slip ring structure, the structure of motor is simplified, improve the reliability of motor work, reduce electrical machmary maintenance cost, while be advantageous to winding radiating and improve rotor dynamic balancing performance, add operating efficiency.
Description
Technical field
The invention belongs to field of hybrid electric vehicles, and in particular to a kind of combined type for hybrid electric vehicle is brushless electricity
Machine.
Background technology
The internal combustion engine of hybrid electric vehicle frequently changes operating point because being influenceed by load behavior, and not continuous firing exists
High efficiency point, makes engine operating efficiency relatively low, and power consumption is more.
It is double that Chinese patent literature CN201323515Y discloses a kind of brushless double feed of radial magnetic field on October 7th, 2009
Mechanical ports motor, the motor include internal rotor, outer rotor and stator successively from inside to outside, placed in stator and outer rotor groove around
Group, and outer rotor winding uses winding multiplexing technology, reduces winding usage quantity, improves winding utilization, reduces electricity
The volume of machine.It can regard squirrel cage asynchronous motor as from principle and magneto alternator cascade forms.It is applied to
Hybrid electric vehicle, engine can be made to be operated in high efficiency point for a long time, and then improve fuel availability, reduce loss.
But patent the problem of existing, is：Motor is formed by the cascade of two motors, complicated and will to processing technology
Ask very high, control process is more complicated；In addition, removing electric brush slip ring mechanism by introducing double feedback electric engine method, motor is reduced
Power density and efficiency.
The content of the invention
The problem of existing for prior art, it is brushless that the technical problems to be solved by the invention are just to provide a kind of combined type
Motor, motor brushless, the slip ring structure, the complexity of electric machine structure can be reduced, the reliability of motor work is improved, reduces electricity
Machine maintenance cost, while be advantageous to winding radiating and improve rotor dynamic balancing performance, increase operating efficiency.
The technical problems to be solved by the invention realize that it includes motor casing, motor by such technical scheme
There are the first motor and the second motor in shell side by side, the first motor is made up of the first stator from outside to inside, adjustable magnetic ring and internal rotor
Brushless double-rotor machine, the first described stator are by the assembled salient-pole structure of six pieces of E word arc iron cores, adjacent two pieces of E
One piece of first permanent magnet circumferentially to magnetize is clamped between word arc iron cores, adjacent two pieces of permanent magnet magnetizing directions are relative,
DC excitation winding technique is formed with the first permanent magnet convex in the center tooth of E word arc iron cores in two pieces of E words arc iron cores
Extremely upper coiling three-phase centralization AC excitation winding, DC excitation winding and three-phase centralization AC excitation winding share one
Stator teeth groove and individually separated；Described adjustable magnetic ring forms cylinder by seven pieces of magnetic conductors and seven pieces of non-magnetizers；Turn in described
Son is equipped with eight piece of second permanent magnet, and the second permanent magnet is embedded in inside internal rotor, and the outer layer of the second permanent magnet is provided with three amortisseur bars；
Second motor forms permanent-magnetic electric machine by the second stator and rotor；Three-phase distribution winding, rotor magnetic are placed in second stator slot
In extremely embedded rotor outer periphery face, engine output shaft is connected with internal rotor；Main reducing gear input shaft connects through the second machine shaft
Modulate rotor output shaft, the first motor and the second motor coaxle heart line.
The solution have the advantages that：
1st, two kinds of excitation source magnetic fields of the first stator of the invention collective effect in air gap produces excitation field, has stronger gas
Gap flux control ability, when electricity excitation magnetic field and permanent magnetic field are in opposite direction, air-gap field weakens, when electricity excitation magnetic field direction
Air-gap field strengthens when identical with permanent magnetic field direction.Realize torque by adjusting DC excitation size of current and direction or turn
Fast performance requirement, the various features of magneto were both inherited, while made air-gap field that there is the advantages of smooth adjustable again.
2nd, the first stator in the present invention, modulation ring, internal rotor form magnetic gear transmission device.On internal rotor only forever
Magnet and without winding, be easy to cool down, and motor non-brushing can be realized, simplied system structure.Compared to traditional mechanical gear, magnetic
Property gear have without rub, shake small, noise is low, without lubrication, reliability is high the advantages of, improve whole system work effect
Rate.
3rd, the present invention disposes amortisseur bar in internal rotor, can effectively suppress the transient oscillation of brushless double-rotor machine,
Reduce the amplitude of fluctuation and reduce period of waves, make motor that there is good dynamic stability, reduce control difficulty, be easy to formulate
Suitable control strategy.
4th, for structure caused by two cascade machines of radial magnetic field brushless double feed double-mechanical-port motor it is cumbersome, processing
Technological requirement is high, control method challenge, and the present invention places two motors or so, and left side brushless double-rotor machine is responsible for reality
Existing rotating speed decoupling, right side magneto are responsible for realizing torque decoupler, reduce control difficulty and difficulty of processing.
Brief description of the drawings
The brief description of the drawings of the present invention is as follows：
Fig. 1 is the structural representation that the present invention is assemblied in mixed power automobile driving system；
Fig. 2 is the structural representation of brushless double-rotor machine；
Fig. 3 is the structural representation of magneto.
In figure：1. motor casing；2. the first stator；21.E word arc iron cores；3. adjustable magnetic ring；31. magnetic conductor；It is 32. non-magnetic
Body；4. internal rotor；5. the first permanent magnet；51. the second permanent magnet；6. amortisseur bar；7. three-phase centralization AC excitation winding；It is 8. straight
Flow Exciting Windings for Transverse Differential Protection；9. the second stator；10. rotor；11. three-phase distribution winding；12. rotor magnetic pole；13. engine output shaft；
14. modulate rotor output shaft；15. main reducing gear input shaft.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples：
As shown in Figure 1, Figure 2 and Figure 3, the present invention includes motor casing 1, has the first motor and the second motor side by side in motor casing, the
One motor forms brushless double-rotor machine, the first described stator by the first stator 2, adjustable magnetic ring 3 and internal rotor 4 from outside to inside
2 be by the assembled salient-pole structure of six pieces of E words arc iron cores 21, and one piece is clamped between adjacent two pieces of E words arc iron cores 21
The first permanent magnet 5 circumferentially to magnetize, adjacent two pieces of permanent magnet magnetizing directions are relative, and DC excitation winding 8 is wound on E words
In the center tooth of arc iron cores 21, the coiling three-phase set on the salient pole that two pieces of E words arc iron cores 21 and the first permanent magnet 5 are formed
Chinese style AC excitation winding 7, DC excitation winding 8 and three-phase centralization AC excitation winding 7 share a stator teeth groove and each
From separation；Described adjustable magnetic ring 3 forms cylinder by seven pieces of magnetic conductors 31 and seven pieces of non-magnetizers 32；The internal rotor 4 is equipped with
Eight piece of second permanent magnet 51, the second permanent magnet 51 are embedded in inside internal rotor 4, and the outer layer of the second permanent magnet 51 is provided with three amortisseur bars
6；Second motor forms permanent-magnetic electric machine by the second stator 9 and rotor 10；Three-phase distribution winding 11 is placed in second stator slot,
Rotor magnetic pole 12 is embedded in the outer peripheral face of rotor 10, and engine output shaft 13 is connected with internal rotor 4；Main reducing gear input shaft 15 is through
Two machine shafts connection modulation rotor output shaft 14, the axial line of internal rotor 4 overlaps with the axial line of the second motor.
The E words arc iron cores 21 of six pieces of salient-pole structures of use of the first stator of brushless double-rotor machine 2 of the present invention, adjacent two
One piece of permanent magnet 5 is disposed between block E words arc iron cores 21, permanent magnet circumferentially magnetizes to produce the main excitation source of permanent magnet, and
The magnetizing direction of adjacent two pieces of permanent magnets is relative；DC excitation winding 8 is wound in the center tooth of E words arc iron cores 21, and forever
The excitation source collective effect of magnet 5 produces excitation field；The coiling three-phase on the salient pole that two pieces of E words arc iron cores and permanent magnet are formed
Centralized AC excitation winding 7, to produce rotating excitation field；DC excitation winding 7 and three-phase centralization AC excitation winding 7 are common
With a stator teeth groove and individually separated, interfering for AC and DC magnetic field is avoided.
The present invention operation principle be：
Two kinds of excitation source magnetic fields in the stator of brushless double-rotor machine first collective effect in outer air gap produces excitation field, tool
There is stronger air-gap field regulating power.When electricity excitation magnetic field and permanent magnetic field are in opposite direction, air-gap field weakens, when electricity is encouraged
Air-gap field strengthens when magnetic magnetic direction is identical with permanent magnetic field direction.It is adjustable magnetic ring between first stator and internal rotor, utilizes
Magnetic field modulation principle（Referring to " research of Hybrid Vehicle radial magnetic field modulating ", platinum is firm, breathes out
That shore polytechnical university doctor's thesis, page 26 ~ 27, in December, 2015）, change in the presence of magnetic conductor and non-magnetizer
Air-gap permeance.Two kinds of excitation source magnetic fields and the rotary speed of air-gap field caused by change magnetic conductance interaction on first stator
Change, make the harmonic field that different numbers of pole-pairs are formed in outer air gap, and outside the number of pole-pairs identical of internal rotor permanent-magnetic magnetic field
Air-gap field produces torque with internal rotor permanent-magnetic magnetic field interaction, and can be put down by adjusting DC excitation size of current and direction
It is sliding to adjust outer air-gap field size；Permanent magnetic field on internal rotor can also produce and the with the interaction of change magnetic conductance in interior air gap
One stator number of pole-pairs identical permanent magnetic field simultaneously produces torque with the interaction of the first stator, makes the input torque of engine through adjusting
Ring processed is transferred to wheel, completes the energy transmission under different rotating speeds, realizes gear.
The output shaft of hybrid electric vehicle engine is connected with the internal rotor in brushless double-rotor machine, the input as energy
End；To modulate rotor of the ring as the motor of output axis connection second of rotor, and it is ultimately connected to the wheel of hybrid electric vehicle.Pass through
The frequency shift stator field rotating speed of electric current in the first stator winding is adjusted, makes the rotating speed that modulation rotor exports independent of interior
The output speed of rotor, speed discrepancy is provided for engine and wheel, realizes the two uneoupled control of rotating speed and stepless change of system
Fast function.Second motor inputs driving torque or braking moment according to the needs of actual loading, and with modulating the original torque of ring
It is superimposed, modulation rotor final output is turned to the torque of load independent of what permanent magnet machine rotor output shaft was inputted
Square, to realize the flexible modulation of torque.
Amortisseur bar 6 closes short-circuited winding with both ends boxing by the copper bar in insertion main pole pole shoe groove into one, with asynchronous electricity
The mouse cage winding structure of motivation is similar.When internal rotor running status disturbs, outer air gap after the modulation of modulated ring and interior
There is relative motion rotor field, and induced-current will be produced in amortisseur bar 6, forms the complementary field with damping action, its
Caused electromagnetic torque can play a part of suppressing the concussion of internal rotor rotating speed.When internal rotor rotating speed is less than outer air gap rotating speed,
Amortisseur bar 6 cuts outer air-gap field and produces induced-current, and induced-current produces torque on amortisseur bar 6 and accelerates internal rotor,
So as to weaken fluctuation, operation stability is improved；When internal rotor rotating speed is higher than outer air gap rotating speed, the torque is reverse, so as to reduce
Internal rotor rotating speed, reach steady operational status.
It is of the invention by two motors compared with the problem of existing radial magnetic field brushless double feed double-mechanical-port motor is present
Left and right is placed, and the brushless double-rotor machine in left side is responsible for realizing that rotating speed decouples, and the magneto on right side is responsible for realizing torque decoupler,
Reduce control difficulty and difficulty of processing.Two kinds of excitation source magnetic fields in first stator of the invention collective effect in air gap, which produces, encourages
Magnetic magnetic field, make air-gap field that there is stronger smooth adjustability.The first stator, modulation ring, internal rotor in the present invention form magnetic
Property gear drive, on internal rotor only permanent magnet and without winding, be easy to cool down, and motor non-brushing can be realized, simplify electricity
Machine structure.Compared with traditional mechanical gear, magnetic gear, the present invention have without rub, shake small, noise is low, without lubrication,
The advantages of reliability is high, effectively improve the operating efficiency of whole system.
Claims (2)
1. a kind of combined type brushless electric machine, including motor casing（1）, have the first motor and the second motor side by side in motor casing, it is special
Sign is：First motor is by the first stator from outside to inside（2）, adjustable magnetic ring（3）And internal rotor（4）Form brushless double-rotor machine,
The first described stator（2）It is by six pieces of E word arc iron cores（21）Assembled salient-pole structure, adjacent two pieces of E word arc iron
The heart（21）Between be clamped with one piece of first permanent magnet circumferentially to magnetize（5）, adjacent two pieces of permanent magnet magnetizing directions are relative, directly
Flow Exciting Windings for Transverse Differential Protection（8）It is wound on E word arc iron cores（21）Center tooth on, in two pieces of E word arc iron cores（21）With the first permanent magnetism
Coiling three-phase centralization AC excitation winding on the salient pole that body 5 is formed（7）, DC excitation winding（8）Exchanged with three-phase centralization
Exciting Windings for Transverse Differential Protection（7）Share a stator teeth groove and individually separated；Described adjustable magnetic ring（3）By seven pieces of magnetic conductors（31）It is non-with seven pieces
Magnetic conductor（32）Form cylinder；The internal rotor（4）Equipped with eight piece of second permanent magnet（51）, the second permanent magnet（51）In insertion
Rotor（4）Inside, the second permanent magnet（51）Outer layer be provided with three amortisseur bars（6）；Second motor is by the second stator（9）And rotor
（10）Form permanent-magnetic electric machine；Three-phase distribution winding is placed in second stator slot（11）, rotor magnetic pole（12）Embedded rotor
（10）In outer peripheral face, engine output shaft（13）With internal rotor（4）It is connected；Main reducing gear input shaft（15）Through the second machine shaft
Connection modulation rotor output shaft（14）, the first motor and the second motor coaxle heart line.
2. combined type brushless electric machine according to claim 1, it is characterized in that：The amortisseur bar（6）By insertion main pole pole shoe
Copper bar in groove closes short-circuited winding with both ends boxing into one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711084709.4A CN107612286A (en) | 2017-11-07 | 2017-11-07 | A kind of combined type brushless electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711084709.4A CN107612286A (en) | 2017-11-07 | 2017-11-07 | A kind of combined type brushless electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107612286A true CN107612286A (en) | 2018-01-19 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711084709.4A Pending CN107612286A (en) | 2017-11-07 | 2017-11-07 | A kind of combined type brushless electric machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396472A (en) * | 2021-10-12 | 2022-04-26 | 华为数字能源技术有限公司 | Power assembly and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938199A (en) * | 2010-09-07 | 2011-01-05 | 哈尔滨工业大学 | Radial-radial magnetic field modulation type brush-less composite structure motor |
| CN103978886A (en) * | 2014-05-28 | 2014-08-13 | 哈尔滨工业大学 | Input combined hybrid power system |
| CN105915024A (en) * | 2016-05-27 | 2016-08-31 | 中国石油大学(华东) | High-performance field modulation magnetic gear |
| CN107026544A (en) * | 2017-05-24 | 2017-08-08 | 重庆大学 | A kind of composite excitation type combined type double-rotor machine |
-
2017
- 2017-11-07 CN CN201711084709.4A patent/CN107612286A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938199A (en) * | 2010-09-07 | 2011-01-05 | 哈尔滨工业大学 | Radial-radial magnetic field modulation type brush-less composite structure motor |
| CN103978886A (en) * | 2014-05-28 | 2014-08-13 | 哈尔滨工业大学 | Input combined hybrid power system |
| CN105915024A (en) * | 2016-05-27 | 2016-08-31 | 中国石油大学(华东) | High-performance field modulation magnetic gear |
| CN107026544A (en) * | 2017-05-24 | 2017-08-08 | 重庆大学 | A kind of composite excitation type combined type double-rotor machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396472A (en) * | 2021-10-12 | 2022-04-26 | 华为数字能源技术有限公司 | Power assembly and vehicle |
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Application publication date: 20180119 |
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