CN203301263U - Magnet steel movable built-in permanent magnet motor structure - Google Patents
Magnet steel movable built-in permanent magnet motor structure Download PDFInfo
- Publication number
- CN203301263U CN203301263U CN2013202500934U CN201320250093U CN203301263U CN 203301263 U CN203301263 U CN 203301263U CN 2013202500934 U CN2013202500934 U CN 2013202500934U CN 201320250093 U CN201320250093 U CN 201320250093U CN 203301263 U CN203301263 U CN 203301263U
- Authority
- CN
- China
- Prior art keywords
- magnet steel
- magnet
- motor
- rotor
- rotor core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to a motor and aims to provide a magnet steel movable built-in permanent magnet motor structure. The magnet steel movable built-in permanent magnet motor structure comprises a motor stator, a motor rotor and a motor casing. The motor rotor comprises a rotor iron core, magnet steels, elastic devices and magnet isolation materials. At least two magnet steel grooves are arranged on the rotor iron core. The direction of the magnet steel grooves and the radial direction of the rotor iron core form an angle. The magnet steels are alternatively embedded in the magnet steel grooves according to N pole and S pole. The magnet steels can move along the direction of the magnet steel grooves in the magnet steel grooves. Each elastic device is arranged on one end, which is close to the outer circle of the rotor iron core, of each magnet steel. The magnet isolation materials are arranged on the tail end, which is close to the outer circle of the rotor iron core, of each magnet steel and two sides of each elastic device. The elastic devices and the magnet isolation materials are embedded in the magnet steel grooves. According to the utility model, when the motor starts or is at a low rotation speed, enough torque of the motor is ensured; when the motor runs at a high speed, the rotor magnet field can be weakened to realize motor flux-weakening and to offset the growth of back electromotive force; and high efficiency of the motor is ensured.
Description
Technical field
The utility model is about a kind of motor, particularly the removable interior permanent magnet machines structure of a kind of magnet steel.
Background technology
The analysis showed that both at home and abroad, magneto has torque density, characteristics that power density is larger, and this makes permanent magnet brushless electromotor more and more become the optimal selection of electric drive system for electric vehicles.Usually, the requirement of low torque when large starting torque, high speed when meeting vehicle low speed, driving system for electric vehicles is when high speed, should possess the output-constant operation ability, to guarantee that motor meets vehicle traction moment characteristic with minimum power quota and volume, possess large torque while being low speed to produce high acceleration, during high speed, only need less torque to maintain the high tape running of vehicle, and guarantee the safety of drive motors.Taking full advantage of the expansion speed ability of motor, reduce to greatest extent rated power and the volume of drive motors, is to reduce cost, saves the effective measures of vehicle space.
The weak magnetism speed expansion of motor is based on such a fact: when motor speed raises, cause that the stator back-emf increases, when back-emf during higher than the inverter anode-cathode voltage, due to contravarianter voltage, current capacity restriction, inverter can't provide electric current that energy is sent into to motor to motor, has caused limited expansion speed effect, thereby, must under the prerequisite constant at the inverter capacity, weaken magnetic field, realize the weak magnetic of motor, to offset increasing of back electromotive force.
The utility model content
Main purpose of the present utility model is to overcome deficiency of the prior art, and a kind of electric machine structure that can realize weak magnetism speed expansion is provided.For solving the problems of the technologies described above, solution of the present utility model is:
Provide a kind of magnet steel removable interior permanent magnet machines structure, comprise motor stator, rotor and motor housing, rotor comprises rotor core, magnet steel, elastic device and NULL, rotor core is provided with at least two magnet steel grooves, the direction of magnet steel groove and rotor core radial shape are angled, magnet steel is pressed the N utmost point, the S utmost point alternately is inlaid in each magnet steel groove, magnet steel can move along magnet steel groove direction in the magnet steel groove, elastic device is arranged on the end of magnet steel near the rotor core cylindrical, magnet steel is equipped with NULL near the end of rotor core cylindrical and the both sides of elastic device, elastic device and NULL are inlaid in the magnet steel groove.
As further improvement, described elastic device is spring.
As further improvement, described motor stator comprises stator core, and stator core and rotor core are respectively the iron core that the ring-shaped silicon steel sheet closed assembly forms.
As further improvement, described NULL is the material that magnetic permeability is less than the silicon steel sheet magnetic permeability of rotor core.
As further improvement, be evenly distributed with even number magnet steel groove in described rotor core.
As further improvement, described adjacent magnet steel groove is V-arrangement or the non-V-arrangement that relative rotor core radial symmetric distributes.
Compared with prior art, the beneficial effects of the utility model are:
Adopt novel rotor structure, when motor, starting or guaranteeing that motor has enough torques during the slow-speed of revolution, when high speed operation of motor, can weaken rotor field, realize the weak magnetic of motor, to offset increasing of back electromotive force, guarantee that motor has higher efficiency.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the rotor schematic diagram in the utility model.
Fig. 3 is motor stator and the motor rotor construction schematic diagram of the utility model when startup or the slow-speed of revolution.
Fig. 4 be the utility model when high-speed cruising motor stator and motor rotor construction schematic diagram.
Fig. 5 is enforcement illustration of the present utility model.
Reference numeral in figure is: 1 rotor core; 2 magnet steel; 3 elastic devices; 4 NULL; The 5 N utmost points; The 6 S utmost points; 7 motor housings; 8 connection box for motor; 9 motor stators; 10 rotors.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
The removable interior permanent magnet machines structure of magnet steel in Fig. 1 comprises motor stator 9, rotor 10 and motor housing 7, and motor stator 9 comprises stator core.As shown in Figure 2, rotor 10 comprises rotor core 1, magnet steel 2, elastic device 3 and NULL 4, stator core and rotor core 1 are respectively the iron core that the ring-shaped silicon steel sheet closed assembly forms, and the magnetic permeability of NULL 4 is less than the magnetic permeability of the silicon steel sheet of rotor core 1, and elastic device 3 is spring.Be evenly distributed with 12 magnet steel grooves in rotor core 1, the direction of magnet steel groove and rotor core 1 radial shape are angled, and adjacent magnet steel groove is the V-arrangement that relative rotor core 1 radial symmetric distributes.Magnet steel 2 alternately is inlaid in each magnet steel groove by the N utmost point 5, the S utmost point 6, and magnet steel 2 can move along magnet steel groove direction in the magnet steel groove.Elastic device 3 is arranged on the end of magnet steel 2 near rotor core 1 cylindrical, and magnet steel 2 is equipped with NULL 4 near the end of rotor core 1 cylindrical and the both sides of elastic device 3, and elastic device 3 and NULL 4 are inlaid in the magnet steel groove.
As shown in Figure 3, when rotor 10 is static or during low speed rotation magnet steel 2 by elastic device 3, pushed, near the bottom of V-shaped groove, the contact area maximum of now magnet steel 2 and rotor core 1, the magnetic flux of dispersing is also just maximum, when electric motor starting and low-speed running, can produce larger moment of torsion.
As shown in Figure 4, when rotor 10 High Rotation Speeds, magnet steel 2 is subject to centrifugal action radially, when the suffered centrifugal force of magnet steel 2 is greater than the elastic force of elastic device 3, elastic device 3 is by compressed, magnet steel 2 can be to the side shifting that elastic device 3 is installed, until the suffered centrifugal force of the elastic force of elastic device 3 and magnet steel 2 reaches a new balance.Now, the part that magnet steel 2 embeds NULL 4 can increase, and the area that magnet steel 2 directly contacts with the rotor silicon steel sheet will reduce, thereby the magnetic flux of dispersing also just reduces thereupon, rotor 10 field weakenings, thus realize the weak magnetic of motor, to guarantee magneto, higher power is arranged.
The elastic force of the angle of magnet steel 2 and elastic device 3 can calculate setting as required:
As shown in Figure 2, the computing formula of magnet steel 2 centrifugal force: F=m ω
2r, if known speed n, ω=2 π n, the power of magnet steel 2 elasticity of compression devices 3 is F1=F * cos θ, elastic force after spring is compressed is F`=k * x, wherein K is coefficient of elasticity, x is spring-compressed length, F is the suffered centrifugal force of magnet steel 2, F1 is the component of the suffered centrifugal force of magnet steel 2 along magnet steel groove direction, F2 is that the suffered centrifugal force of magnet steel 2 is along the component perpendicular to magnet steel groove direction, F` is produced elastic force after by magnet steel 2 compression, θ is the angle that magnet steel 2 tilts, the quality that m is magnet steel 2, angular speed when ω is magnet steel 2 rotation, r is the distances of magnet steel 2 centers of gravity to the rotor center of circle, the linear velocity that n is magnet steel 2 rotations.F1 and F` opposite direction, after two power equal and opposite in directions, cancel out each other, the stressed poised state that reaches of magnet steel 2.Can require the size at design θ angle, the length of r according to rotating speed during design, and use the elastic device 3 of corresponding k value, thereby reach accurate control.
Finally, it should be noted that above what enumerate is only specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, and a lot of distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model, all should think protection range of the present utility model.
Claims (6)
1. the removable interior permanent magnet machines structure of magnet steel, comprise motor stator, rotor and motor housing, it is characterized in that, rotor comprises rotor core, magnet steel, elastic device and NULL, rotor core is provided with at least two magnet steel grooves, the direction of magnet steel groove and rotor core radial shape are angled, magnet steel is pressed the N utmost point, the S utmost point alternately is inlaid in each magnet steel groove, magnet steel can move along magnet steel groove direction in the magnet steel groove, elastic device is arranged on the end of magnet steel near the rotor core cylindrical, magnet steel is equipped with NULL near the end of rotor core cylindrical and the both sides of elastic device, elastic device and NULL are inlaid in the magnet steel groove.
2. the removable interior permanent magnet machines structure of magnet steel according to claim 1, is characterized in that, described elastic device is spring.
3. the removable interior permanent magnet machines structure of magnet steel according to claim 1, is characterized in that, described motor stator comprises stator core, and stator core and rotor core are respectively the iron core that the ring-shaped silicon steel sheet closed assembly forms.
4. the removable interior permanent magnet machines structure of magnet steel according to claim 3, is characterized in that, described NULL is the material that magnetic permeability is less than the silicon steel sheet magnetic permeability of rotor core.
5. the removable interior permanent magnet machines structure of magnet steel according to claim 1, is characterized in that, is evenly distributed with even number magnet steel groove in described rotor core.
6. the removable interior permanent magnet machines structure of magnet steel according to claim 5, is characterized in that, described adjacent magnet steel groove is V-arrangement or the non-V-arrangement that relative rotor core radial symmetric distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202500934U CN203301263U (en) | 2013-05-09 | 2013-05-09 | Magnet steel movable built-in permanent magnet motor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202500934U CN203301263U (en) | 2013-05-09 | 2013-05-09 | Magnet steel movable built-in permanent magnet motor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203301263U true CN203301263U (en) | 2013-11-20 |
Family
ID=49577246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202500934U Expired - Fee Related CN203301263U (en) | 2013-05-09 | 2013-05-09 | Magnet steel movable built-in permanent magnet motor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203301263U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259352A (en) * | 2013-03-25 | 2013-08-21 | 杭州德沃仕电动科技有限公司 | Built-in type permanent magnet motor structure with movable magnetic steel |
| US20190068037A1 (en) * | 2017-08-25 | 2019-02-28 | Schaeffler Technologies AG & Co. KG | Permanent magnet machine including ferromagnetic components for external field weakening and method of constructing |
-
2013
- 2013-05-09 CN CN2013202500934U patent/CN203301263U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259352A (en) * | 2013-03-25 | 2013-08-21 | 杭州德沃仕电动科技有限公司 | Built-in type permanent magnet motor structure with movable magnetic steel |
| US20190068037A1 (en) * | 2017-08-25 | 2019-02-28 | Schaeffler Technologies AG & Co. KG | Permanent magnet machine including ferromagnetic components for external field weakening and method of constructing |
| US10811945B2 (en) * | 2017-08-25 | 2020-10-20 | Schaeffler Technologies AG & Co. KG | Permanent magnet machine including ferromagnetic components for external field weakening and method of constructing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101404435B (en) | Magnetic field speed reduction type low speed large torque moment permanent-magnet brushless DC motor | |
| CN101106294A (en) | High-speed self started frequency conversion generator | |
| CN201947073U (en) | Radial structure outer-rotor biconvex pole motor | |
| CN101123386B (en) | Tangential-set magnet permanent synchronization motor | |
| CN103580410A (en) | Wide-range speed control permanent magnet synchronous motor used for electric vehicle | |
| CN102820756A (en) | Disc type three-phase magnetic gathering type transverse magnetic field permanent magnet motor | |
| CN100440686C (en) | Centrifugal permanent-magnet starting generating equip ment | |
| CN203301263U (en) | Magnet steel movable built-in permanent magnet motor structure | |
| CN103259352A (en) | Built-in type permanent magnet motor structure with movable magnetic steel | |
| CN204465161U (en) | A kind of single-phase transverse flux machine | |
| CN105914981B (en) | A kind of electric vehicle composite excitation wheel hub motor | |
| CN103904855A (en) | Brushless harmonic excitation motor with initial self-starting capacity | |
| CN201213237Y (en) | Magnetic field speed reducing type large torque permanent magnet brushless DC motor | |
| CN102570749A (en) | Magnetic levitation energy storage flywheel motor, generator, motor and wind driven generator | |
| CN103269135A (en) | Movable magnetic steel built-in-type permanent magnet motor rotor structure | |
| CN203301268U (en) | Magnet steel movable built-in permanent magnet motor rotor structure | |
| CN206323273U (en) | A kind of double-stator permanent magnet synchronous motor | |
| CN105720772B (en) | A kind of electric car composite excitation motor | |
| CN209402384U (en) | 10 pole three-phase permanent magnetic brushless motor of electric vehicle and 18 slot | |
| CN102386732A (en) | Nested low-speed outer rotor permanent magnet motor | |
| CN203377698U (en) | Novel rotor structure of servo motor | |
| CN202405929U (en) | Side-by-side motor system, generator system and electric motor system | |
| CN202679193U (en) | Electric automobile permanent magnet synchronous motor with wide speed regulation range | |
| CN206135577U (en) | Motor and electric vehicle of multidimension phase separating | |
| CN109904959A (en) | A kind of permanent magnet synchronous motor for new energy automobile rotor convenient for weak magnetic |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 |