CN203416069U - Flux-switching motor with multiple electric/magnetic paths and low cogging torque - Google Patents
Flux-switching motor with multiple electric/magnetic paths and low cogging torque Download PDFInfo
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- CN203416069U CN203416069U CN201320034274.3U CN201320034274U CN203416069U CN 203416069 U CN203416069 U CN 203416069U CN 201320034274 U CN201320034274 U CN 201320034274U CN 203416069 U CN203416069 U CN 203416069U
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Abstract
The utility model discloses a flux-switching motor with multiple electric/magnetic paths and low cogging torque, wherein electric load and magnetic load are divided into multiple independent paths, and the motor has low cogging torque and self fault tolerance. The motor comprises main portions of a stator double permanent magnet iron core salient pole, a tooth top cambered surface arc cutting tooth rotor, armature windings of three-phase multiple electromagnetic paths, etc. Each phase of the three-phase armature windings is divided into several independent electromagnetic paths, the stator iron core salient pole is double permanent magnets, and in addition with the tooth top cambered surface arc cutting tooth method, the cogging torque of the motor is reduced to the lowest finally. The motor has high power density, high energy saving efficiency, smooth running, low noise, strong self fault tolerance and adjustable power, when an armature winding has a fault, the motor runs continuously with high reliability, the motor can also performs as a generator, the totally-enclosed structure is suitable for application under high speed, high temperature and severe environment conditions and underwater, and the application scope is wide.
Description
Technical field
The utility model patented invention has related to a kind of " magnetic pass switching electromotor of polynary electricity/flux path, Low gullet torque ", is the innovative flux switch motor that effectively improves combination property.
Background technology
In short supply along with social development, the energy, each field has proposed higher demand to each side such as the high-performance of motor, high efficiency, high reliability, especially at Aero-Space, military equipment, sea-lanes of communication and mining equipment that some are important, be especially badly in need of thering is high power density (volume is little), high efficiency (energy-conservation), high reliability (can operate with failure), operate steadily (noise is low), firm in structure, the New-type electric machine that can tolerate adverse circumstances, the good combination property such as applied widely.But traditional all kinds of motors are all difficult to adapt to completely the requirement of these conditions.
Current comparatively advanced permanent magnetism class motor, comprise " permanent magnetic brushless BLDC ", " permagnetic synchronous motor " PMSM, " coreless permanent magnet motor " though etc. have higher efficiency, but due to reasons such as manufacturing process and protectives, generally all adopt internal rotor permanent-magnetic type structure (coreless permanent magnet motor is rotor permanent magnet type structure for essential Bian, and power is confined to little, micromachine at present).Due to rotor, when moving, temperature rise is higher, radiating condition is poor, and the centrifugal force producing while adding High Rotation Speed easily makes permanent-magnet pieces demagnetization or comes off, and after use a period of time, easily causes motor performance to decline gradually, even can not use.
" switching magnetic-resistance SPM motor " has simple in structure, and robustness is good, and electricity/magnetic circuit independence is good, tool fault-tolerance, rotor does not have permanent magnetism, there is no winding yet, adapts to high speed, hot operation, but also exist cogging torque pulsation large, noise is large, and vibration is large, and efficiency is also lower than permanent magnetism class motor, add that driving control system is complicated, high in cost of production shortcoming, fail wide popularization and application.
At present except switched reluctance machines (but also there is above-mentioned shortcoming), all can there is a very little point failure because of certain winding in other types motor, motor can not continue the fatal drawback of operation immediately, reliability is undesirable, at some, there is the field of high reliability request, even great security incident can be led to, militarily opportunity of combat can be incured loss through delay.Develop a kind of novel, high power density, high efficiency, robustness good, there is from fault-tolerant high reliability, at the energy-saving and environmental protection of the stronger tolerance of adverse circumstances tool, firm, durable New-type electric machine the problem that becomes the focus of countries in the world engineers and technicians' scientific research and urgently break through.I take charge of the comprehensive long and short place that analyzes all kinds of motors of engineers and technicians, especially advantage permanent magnetism class motor and switched reluctance machines two class motors being had or potential meltable, this is analyzed, contrast, use for reference, integrate, develop a kind of structure, principle, " polynary electricity/flux path, Low gullet torque magnetic pass switching electromotor " that technical characterictic is brand-new.The utility model patented invention belongs to autonomous original invention.
utility model patent summary of the invention
It is poor that the utility model is intended to overcome existing all kinds of electric machine combination property, adopts new electricity/magnetic structure and operation principle, makes the combination property of motor, particularly in high power density, high efficiency, high reliability, adaptability etc., is improved.
The structure of " polynary electricity/flux path, Low gullet torque magnetic pass switching electromotor " be by two permanent magnet cardiac prominence utmost point stators, tooth top cambered surface cut tooth the polynary electricity/flux path of rotor, three-phase armature winding, armature winding lead-out wire, current overload safety device, the shell with cooling fin, front/rear end cap, front/rear end cap O-ring seals, front end housing rotating shaft sealing assembly, rotating shaft, front/rear bearing, spring washer, lead-out wire bore seal assembly, etc. main composition.
The tooth top cambered surface of " polynary electricity/flux path, Low gullet torque magnetic pass switching electromotor " is cut the rotor of tooth, technical characterictic is: the punching by silicon steel sheet is overrided to form, excircle is evenly equipped with even number double wedge, double wedge quantity is determined according to the number of phases of motor, number of poles, quantity is even number, and the tooth top cambered surface of each double wedge is all repaiied and cut through appropriate radian.
Two permanent magnet cardiac prominence utmost point stators of " magnetic pass switching electromotor of polynary electricity/flux path, Low gullet torque ", technical characterictic is: the punching by silicon steel sheet is overrided to form: silicon steel sheet is washed into after full wafer, is overrided to form; Or stator core is divided into same equal portions by the quantity of salient pole, assembling laminates into the assembly that there is concavo-convex location at rear of core two ends, then is assembled into one-piece stator iron core; The circumference Inner of stator is evenly equipped with even number salient pole unshakable in one's determination, and quantity is that the number of phases, the number of poles of root Ju motor determined, quantity is even number.
Two permanent magnet cardiac prominence utmost points of " polynary electricity/flux path, Low gullet torque magnetic pass switching electromotor ", technical characterictic is: each salient pole unshakable in one's determination is in two grooves along stator shaft orientation, respectively embed respectively a slice same polarity permanent magnet, be in each salient pole, to be embedded with 2 permanent magnets, form two permanent magnet cardiac prominence utmost points, the permanent magnet embedding with adjacent salient pole unshakable in one's determination is heteropolarity; Salient pole periphery more than stator core yoke portion, is coated, bonds, strengthens with glass insulating tape again.
Polynary electricity/the flux path of the three-phase armature winding of " polynary electricity/flux path, Low gullet torque magnetic pass switching electromotor ", technical characterictic is: the polynary electricity/flux path of three-phase armature winding, be divided into A phase armature winding, B phase armature winding, C phase armature winding, the armature winding of each phase sequence separately embedding around in stator circumference by each phase sequence, salient pole unshakable in one's determination corresponding to unit electricity/magnetic circuit separately; The armature winding of each phase sequence is all divided into some separate unit electricity/flux paths; With electricity/flux path armature winding of unit, respectively embedding, around the number of poles salient pole corresponding with electricity/magnetic Circuit Design of pressing motor in stator circumference, is connected in series, and forms independently electricity/flux path of a road.Take stator 12 utmost points, rotor 10 utmost point motors is example: often in stator, occupy 4 salient poles unshakable in one's determination, be distributed in separately in stator circumference and be in 90 positions corresponding to degree mechanical angle, the armature winding in every 2 salient poles unshakable in one's determination is a unit independence electricity/flux path; As A phase armature winding, A1a-A1b is F1 electricity/flux path, and A2a-A2b is F2 electricity/flux path; The A1a-A1b of F1 electricity/flux path armature winding respectively embedding is in the salient pole unshakable in one's determination that 90 degree mechanical angles distribute in stator circumference, is connected in series, and forms F1 electricity/flux path; A2a-A2b embedding, around radially corresponding with the F1 path winding salient pole unshakable in one's determination of stator circumference, is connected in series, and forms F2 electricity/flux path; F1, F2 two-way electricity/flux path armature winding, after the serial connection of respectively hanging oneself " overload current protector ", be connected in parallel again, become the armature winding that A has 2 unit independence electricity/flux paths mutually, remaining B phase armature winding and the embedding of C phase armature winding are around identical with the armature winding of A phase with method of attachment.
Because the independence of each electricity/magnetic circuit is better, if when certain electricity/flux path armature winding of certain phase breaks down, substantially can not affect the armature winding normal operation of other non-fault electricity/flux paths.Therefore motor can continue operation by tape jam, has high reliability.
Both synergies that stator salient poles dual permanent-magnet and rotor tooth top cambered surface are cut tooth, finally make the cogging torque of motor reduce to minimum, and running is level and smooth, noise is low, and therefore electric efficiency also can improve.
Permanent-magnet pieces is assembled in stator, and radiating condition is good, is difficult for Yin Gaowen demagnetization, and the centrifugal force producing in the time of can not running up because of rotor comes off, and has so also increased reliability and the useful life of motor.
Each electricity/flux path armature winding is concentrated winding, and end is short, and manufacturing process is simple, saves electromagnetism copper cash, and the inspection of fault, maintenance are easily.
Rotor is overrided to form by silicon steel sheet processing, both without permanent magnet, also without winding, simple in structure, firm, suitable high speed, high temperature operation; Utmost point tooth top adopts cambered surface to cut tooth method, few on first-harmonic impact, but third and fifth harmonic is respectively 0.1 ﹪ and 0.5 ﹪ of fundamental voltage amplitude, than rotor pole skewed slot method, more can effectively weaken cogging torque pulsation, and easy to process.
The general aluminium alloy (also available other metal materials) for Bian of the material of shell, end cap, because the thermal conductivity of aluminium alloy is higher, the high temperature during easily by machine operation leaves in time, and light specific gravity, makes the Chong Liang Minus of motor few simultaneously.
The hermetically sealed design of motor, applicable adverse circumstances (muddy water splashes, stirs up a cloud of dust) and under water use.
Accompanying drawing explanation
Fig. 1 is the radial section schematic diagram of polynary electricity/flux path, Low gullet torque magnetic pass switching electromotor.
In figure: 10, rotating shaft; 13, the two permanent magnetism salient poles of stator are unshakable in one's determination; 14, armature winding; 16, rotor tooth; 17, permanent magnet; 22, overload current protector.
Fig. 2 is the axial arrangement generalized section of polynary electricity/flux path, Low gullet torque magnetic pass switching electromotor.
In figure: 1, shell; 2, cooling fin; 3, front end housing; 4, rear end cap; 5, O-ring seals; 6, end cap ribs; 7, spring washer; 8, rotating shaft sealing assembly; 9, dust cap; 10, rotating shaft; 11, fore bearing; 12, rear bearing; 13, the two permanent magnetism salient poles of stator are unshakable in one's determination; 14, armature winding; 15, rotor; 18, wire hole seal; 19, lead-out wire; 22, overload current protector.
Embodiment
For realizing above-mentioned object, following concrete implementer's formula is taked in the utility model patented invention.
Polynary electricity/flux path, Low gullet torque magnetic pass switching electromotor, comprise that being with cooling fin aluminium alloy (or other metals) shells (1), front end housing (3), rear end cap (4), front/rear end cap O-ring seals (4), rotating shaft (10), fore bearing (11), rear bearing (12), spring washer (7), front end housing rotating shaft sealing assembly (8), lead-out wire black box (18), overload current protector (22), tooth top cambered surface to cut the main parts such as tooth rotor (15), the two permanent magnetism salient poles (13) of stator core, threephase armature winding (14) forms.As Fig. 2.
With shell and the front/rear end cap of cooling fin, be by aluminum alloy materials or other metal material Tu, by extruding or die casting or casting, by machine work, form, the inner side end of front/rear end cap has ribs; The circumference binding site of shell and front/rear end cap has O-ring seals, between the axis hole of front end housing and rotating shaft, there is black box, there is rubber seal assembly in the lead-out wire hole of rear end cap, that above-mentioned sealing equipment can be selected is as required high temperature resistant, chemically-resistant agent, oil resisting material, prevents that mud, water and chemical substance from infiltrating motor internal; In front end housing bearing chamber, there is spring washer; Rotating shaft is according to the needs of motor purposes, selects different trade mark steel machines to process.As Fig. 2.
Tooth top cambered surface is cut tooth rotor: be to be pressed into by silicon steel punched chip closed assembly, excircle is evenly equipped with even number double wedge, and quantity is that the number of phases, the number of poles according to motor determined, quantity is even number; The tooth top cambered surface of each tooth is all made appropriate cambered surface and is repaiied and cut.
Two permanent magnet cardiac prominence utmost point stators are by silicon steel sheet shape on request, to be washed into full wafer to be overrided to form; Or stator core is divided into the punching of same equal portions shape by the quantity of salient pole, closed assembly becomes the assembly of the concavo-convex location of band, yoke portion two ends, then is assembled into one-piece stator iron core; The circumference Inner of stator is evenly equipped with even number salient pole unshakable in one's determination, and quantity is that the number of phases, the number of poles of root Ju motor determined, quantity is even number.
Two permanent magnet cardiac prominence utmost points, each salient pole unshakable in one's determination embeds respectively 1 same polarity permanent magnet in 2 grooves along stator shaft orientation, be in each salient pole, to be embedded with 2 permanent magnets, the permanent magnet embedding can be ferrite permanent-magnet or rare-earth Nd-Fe-B permanent magnetism or rare earth samarium cobalt permanent magnet or Al-Ni-Co permanent magnet, form two permanent magnet cardiac prominence utmost points, the permanent magnet embedding with adjacent salient pole unshakable in one's determination is heteropolarity, such technical measures can be worked in coordination with the cambered surface radian of rotor and be cut tooth method, to weakening cogging torque pulsation, have quite good effect; Salient pole periphery more than stator core yoke portion, is coated and bonds, strengthens, doubles as insulating barrier with glass insulating tape again.
Polynary electricity/the flux path of three-phase armature winding, respectively embedding is around each phase sequence of stator circumference Inner, salient pole corresponding to the electricity/magnetic circuit of unit separately, method is: first will be divided into some unit independence electricity/flux path with phase sequence armature winding, again electricity/flux path armature winding difference embedding of same unit is pressed to electricity/magnetic Circuit Design salient pole of correspondence mutually in stator circumference, be connected in series, form the electricity/flux path of a separate unit, then by each unit electricity/flux path armature winding of homophase, after the serial connection of respectively hanging oneself overload current protector, be connected in parallel, become one and there is mutually multiple unit electricity/flux path winding, for example: stator 12 utmost points in Fig. 1, polynary electricity/the flux path of rotor 10 utmost points, Low gullet torque magnetic pass switching electromotor, the A1a of A phase and A1b armature winding are F1 unit electricity/flux path, A2a and A2b armature winding are F2 unit electricity/flux path, the A1a of F1 unit electricity/flux path armature winding and A1b respectively embedding are in the salient pole that 90 degree mechanical angles distribute in stator core circumference, be connected in series, form F1 electricity/flux path.A2 a, is connected in series around radially corresponding with the F1 path winding salient pole of stator circumference with A2 b embedding, forms F2 electricity/flux path.F1, F2 two-way electricity/flux path electricity pivot, around Group, are connected in parallel after the serial connection of respectively hanging oneself overload current protector, become the armature winding that A has 2 unit electricity/flux paths mutually.The embedding of the electromagnetism path armature winding of remaining B phase and C phase is around electricity/flux path armature winding is identical mutually with A with method of attachment, as Fig. 1.
Overload current protector, be connected in series with the head end of each electricity/flux path electricity Shu Rao Group, then be connected in parallel with other electricity/flux path armature winding of homophase, form a electricity Shu Rao Group mutually with multiple unit independence electricity/flux path, overload current protector is arranged on the inwall of motor housing rear end, as Fig. 2.
Although above-mentioned, by reference to the accompanying drawings structural principle of the present invention, embodiment are described; but those skilled in the art should understand; implementation example of the present invention is the restriction to invention protection range not; do not departing from the basis of structure of the present invention, principle and technical characterictic, execution mode scope; also have various changes and modifications, within these changes and improvements all belong to the protection range of requirement of the present invention.
Claims (2)
1. a polynary electricity/flux path, Low gullet torque magnetic pass switching electromotor, structure is by tooth top cambered surface, to be cut rotor, the stator of two permanent magnet cardiac prominence utmost points, the main compositions such as armature winding of the polynary electricity/flux path of three-phase of tooth, it is characterized in that: rotor is overrided to form by silicon steel punched chip, excircle is evenly equipped with even number double wedge, and the tooth top cambered surface of each double wedge is all repaiied and cut through appropriate radian; Stator is to be overrided to form by silicon steel punched chip, circumference Inner is evenly equipped with even number salient pole unshakable in one's determination, is embedded with 2 permanent magnets in each salient pole, forms two permanent magnet cardiac prominence utmost points, the permanent magnet embedding with adjacent salient pole unshakable in one's determination is heteropolarity, and it is minimum that both synergies are reduced to the cogging torque of motor; Polynary electricity/the flux path of three-phase armature winding, be divided into A phase armature winding, B phase armature winding, C phase armature winding, they separately respectively embedding around in stator circumference by each phase sequence, salient pole unshakable in one's determination corresponding to unit electricity/magnetic circuit separately, the armature winding of each phase is all divided into some unit electricity/flux path, armature winding with unit electricity/flux path, respectively embedding designs corresponding salient pole unshakable in one's determination around number of poles and electricity/flux path of press motor in stator circumference, be connected in series, form separately independently polynary electricity/flux path.
2. according to polynary electricity/flux path, Low gullet torque magnetic pass switching electromotor described in right 1, it is characterized in that: the dual permanent-magnet that stator embeds can be ferrite permanent-magnet or rare-earth Nd-Fe-B permanent magnetism or rare earth samarium cobalt permanent magnet or Al-Ni-Co permanent magnet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320034274.3U CN203416069U (en) | 2013-01-23 | 2013-01-23 | Flux-switching motor with multiple electric/magnetic paths and low cogging torque |
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| CN201320034274.3U CN203416069U (en) | 2013-01-23 | 2013-01-23 | Flux-switching motor with multiple electric/magnetic paths and low cogging torque |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356699A (en) * | 2015-11-09 | 2016-02-24 | 江苏大学 | Dual-rotor flux-switching motor for vehicle |
| CN107112873A (en) * | 2014-12-16 | 2017-08-29 | 麦格纳动力系有限两合公司 | Motor, stator and the vehicles for motor |
| CN110829643A (en) * | 2018-08-10 | 2020-02-21 | 广东威灵电机制造有限公司 | Radial flux electric machine |
-
2013
- 2013-01-23 CN CN201320034274.3U patent/CN203416069U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107112873A (en) * | 2014-12-16 | 2017-08-29 | 麦格纳动力系有限两合公司 | Motor, stator and the vehicles for motor |
| CN107112873B (en) * | 2014-12-16 | 2019-09-06 | 麦格纳动力系有限两合公司 | Motor, stator and the vehicles for motor |
| US10673312B2 (en) | 2014-12-16 | 2020-06-02 | Magna powertrain gmbh & co kg | Electric machine, stator for an electric machine and vehicle |
| CN105356699A (en) * | 2015-11-09 | 2016-02-24 | 江苏大学 | Dual-rotor flux-switching motor for vehicle |
| CN105356699B (en) * | 2015-11-09 | 2018-04-24 | 江苏大学 | A kind of automobile-used birotor flux switch motor |
| CN110829643A (en) * | 2018-08-10 | 2020-02-21 | 广东威灵电机制造有限公司 | Radial flux electric machine |
| CN110829643B (en) * | 2018-08-10 | 2021-09-21 | 广东威灵电机制造有限公司 | Radial flux electric machine |
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| 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: 20140129 Termination date: 20170123 |