CN110098708A - A kind of durface mounted permanent magnet synchronous motor of stator-sectional - Google Patents
A kind of durface mounted permanent magnet synchronous motor of stator-sectional Download PDFInfo
- Publication number
- CN110098708A CN110098708A CN201910417438.2A CN201910417438A CN110098708A CN 110098708 A CN110098708 A CN 110098708A CN 201910417438 A CN201910417438 A CN 201910417438A CN 110098708 A CN110098708 A CN 110098708A
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- Prior art keywords
- stator
- motor
- sectional
- permanent magnet
- magnet synchronous
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Classifications
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention discloses a kind of durface mounted permanent magnet synchronous motors of stator-sectional, motor stator are divided into completely identical in structureh 1Section, only belongs to the winding of a certain phase in every section, stator per adjacent two sections between one section of insertion fan annular phase shift magnetic inductive block identical with stator material, be equably provided in each iron leg core on statork 2A slot uses single layer concentratred winding structure for placing winding, motor, and the tooth pitch of stator is equal with pole span.It is a kind of durface mounted permanent magnet synchronous motor that the present invention, which is applied to the permanent magnet synchronous motor that electric helicopter main rotor directly drives, and structure, system and the simplification of installation are realized compared with existing motor.The manufacture installation of motor is more easier, while making the maintenance of motor more convenient.
Description
Technical field
The present invention relates to a kind of durface mounted permanent magnet synchronous motors of stator-sectional, belong to permanent magnet synchronous motor technical field.
Background technique
Power consumption is larger when conventional helicopters are run and system in have a large amount of rotary mechanical part, fuel and maintenance cost
Cause its operating cost higher, the development and application of electric helicopter gradually causes attention.Electric helicopter is by conventional helicopters
In a large amount of mechanical part replaced by efficient electronic device, there are the remarkable advantages such as environmental protection, low pollution, low noise.Motor is
The key that energy is converted in electric helicopter system, compared to traditional internal combustion engine, motor have simple structure, high reliablity,
System weight and mechanical complexity can be greatly reduced in the features such as maintainability is good.
It is the relevant deceleration of pot motor collocation that common drive system, which sets up form, in current existing electric airplane
Mechanical structure, this kind of system contain a large amount of mechanical rotating parts, and maintenance cost is high, and high-performance reduction gearbox manufactures and designs difficulty
It is larger.The method of operation of electric-machine directly-driven, which becomes one kind, can envision promising electric helicopter main rotor drive form, driving
System can use in the form of motor direct-drive cuts down fast mechanism, reduces system complexity and maintenance cost, improving operation can
By property.Due to the above advantage, it is raw that electric-machine directly-driven dynamical system is applied to wind-power electricity generation, naval vessel driving, elevator and industry
The fields such as production.Motor in such straight drive system often with the operation characteristic for having the big torque of the slow-speed of revolution, while motor need it is lower
Torque pulsation extend the service life of transmission system to improve operation stability.
Usually quality is larger with volume for the direct driving motor of big torque, and torque density is lower, and manufacture and transport difficulty are larger.Electricity
Dynamic helicopter is more sensitive to the weight of system, and overweight quality can reduce its operational efficiency and course continuation mileage, therefore straight drive is
Need to reduce as far as possible the effective mass of main rotor drive motor in system.Under the premise of meeting the design requirements such as power, torque
Motor is set to have effective mass as small as possible, the following electric helicopter main rotor direct driving motor will be become by improving motor torque density
Design and selection course in significant consideration.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of durface mounted permanent magnet synchronous motor of stator-sectional, will determine
If son is divided into the identical section of stem structure, the winding for belonging to a phase is only installed in each section, the manufacture of motor is installed more
It is easy to add, while making the maintenance of motor more convenient.
The present invention uses following technical scheme to solve above-mentioned technical problem:
A kind of durface mounted permanent magnet synchronous motor of stator-sectional, including stator and rotor, the stator include h1A structure
The stator-sectional of identical fan annular, h1=mk1, by fan annular identical with stator material between two neighboring stator-sectional
The connection of phase shift magnetic inductive block, motor use single layer concentratred winding structure, are equably provided with k on each stator-sectional2A slot is for putting
Winding coil is set, electrical angle shared by each phase shift magnetic inductive block is γs=180 ° of k3/ m, wherein m is the number of phases of motor, k1
For positive integer, k2For even number, k3=1 or 2, and k1、k2、k3Meet following relationship:P is that motor is extremely right
Number, the tooth pitch of stator are equal with pole span.
As a preferred solution of the present invention, the number of phases m of the motor is 3, and k3When=1, stator-sectional number h1For
6 multiple, two neighboring stator-sectional are wound with the induction of the coil on first stator tooth of winding coil clockwise
Potential phase phase difference 2k2π+π/3 electrical angle, and clockwise direction stator-sectional spatially presses A ,-B, C ,-A, B ,-C phase ...
Aligned transfer, k2For even number.
As a preferred solution of the present invention, the number of phases m of the motor is 3, and k3When=2, stator-sectional number h1For
3 multiple, two neighboring stator-sectional are wound with the induction of the coil on first stator tooth of winding coil clockwise
Potential phase phase difference 2k2The π electrical angle of+2 π/3, and clockwise direction stator-sectional spatially presses the rule row of A, C, B phase ...
Column, k2For even number.
As a preferred solution of the present invention, the winding coefficient of the durface mounted permanent magnet synchronous motor is less than 1.
The invention adopts the above technical scheme compared with prior art, has following technical effect that
In view of the size of direct driving motor is larger, it is difficult to which manufacture and assembly, it is identical that stator is divided into several structures by the present invention
Section, the winding for belonging to a phase is only installed in each section, complete motor stator is become by assembly.Stator-sectional
Characteristic installs the manufacture of motor to be more easier, while making the maintenance of motor more convenient, when somewhere is broken down on stator,
This section of stator-sectional can directly be replaced.
Detailed description of the invention
Fig. 1 is the schematic diagram that divided stator number of segment of the present invention is 6.
Fig. 2 is the relationship of motor tooth pitch and pole span of the present invention.
Fig. 3 is the overall structure of motor of the present invention.
Fig. 4 is+A sections of the present invention of stator structure.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings.Below by
The embodiment being described with reference to the drawings is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
A kind of durface mounted permanent magnet synchronous motor of stator-sectional, is divided into completely identical in structure h for motor stator1Section, by
In the winding for only belonging to a certain phase in every section, then the principle of stator-sectional quantity is h1=mk1(k1=1,2,3 ...), m is
The number of phases of motor, the divided stator number of segment of three-phase motor are only 3 integral multiple.h1Section motor stator, which can be considered, is equally divided into k1
Group respectively has three sections to be belonging respectively to A, B, C three-phase in each group.
K is equably provided in each iron leg core on stator2A slot is for placing winding.In order to keep between each phase winding
Relative tertiary location, stator is per needing to be inserted into one section of fan annular phase shift magnetic inductive block identical with stator material between adjacent two sections.
It is γ that each, which fans electrical angle shared by annular phase shift magnetic inductive block,s=180 ° of k3/ m, k3Generally take 1 or 2.For three-phase motor,
Each electrical angle fanned annular phase shift magnetic inductive block and occupy 60 ° or 120 °.
For three-phase motor, h1=3k1, according to analysis before this, motor has following corresponding relationship:
P is motor number of pole-pairs in formula, must be integer.A coil side is placed in each slot of single layer concentratred winding structure,
The then slot number k in every root module stator2It must be even number, then 3k in formula2It also is even number.Work as k3=1, i.e., each phase shift magnetic inductive block
When occupying 60 ° of electrical angles, k1Equation can just be met by being necessary for even number, then the segments 3k of motor stator at this time1(k1=2km, km=
1,2,3 ...) it is only 6 multiple, the induced potential phase of the coil on first tooth of winding coil is wound on adjacent two sections
Differ 2k2The electrical angle of π+π/3, the then stator modules for belonging to each phase are spatially carried out by the rule of A ,-B, C ,-A, B ,-C ...
Arrangement；Work as k3=2, i.e., each phase shift magnetic inductive block occupies 120 ° of electrical angles, (3k in formula2+k3) it is even number, at this time k1It can be any
Value greater than zero, i.e. motor stator segments are 3k1(k1=1,2,3 ...), segments need to be 3 multiple, at this time adjacent two stator
The induced potential phase phase difference 2k of the concentrating coil on first tooth of winding coil is wound in section2The π electrical angle of+2 π/3, then divide
Belong to the stator modules of each phase spatially according to A, the rule of C, B ... are arranged.The presence of phase shift magnetic inductive block makes motor
Winding coefficient less than 1, and phase shift permeable section is not involved in conversion process of energy, thus on stator phase shift magnetic inductive block in stator circle
Total accounting on week should not be too large, and otherwise will generate large effect to the torque density of motor.
By analyzing above it is found that in the identical situation of phase shift permeable section accounting, using 60 ° of electrical angle phase shift magnetic inductive blocks
When motor stator divided stator number of segment of segments when will be than using 120 ° of electrical angle magnetic inductive blocks it is more, motor manufacturing and dimension can be made
It protects simpler.
The permanent magnet synchronous motor that the electric helicopter main rotor that the present invention designs directly drives.It is complete that motor stator is divided into structure
Identical 6 sections, 6 sections of motor stator sections, which can be considered to be equally divided into 2 groups, each group, respectively has three sections to be belonging respectively to A, B, C three-phase.
By taking three-phase motor as an example, segmentation situation is as shown in Figure 1.
14 slots are equably provided in each iron leg core on stator for placing winding, the phase in each stator segment sector
Between adjacent two slots have a stator tooth, each coil is concentrically wound around on a tooth, in each stator segment sector only by a phase around
Group occupies, and all coils in each section are sequentially connected in series.
It due to needing insertion magnetic inductive block between two stator segments, while being to be connected convenient for winding, the stator-sectional in the present invention
Durface mounted permanent magnet synchronous motor is all made of single layer concentratred winding structure, every a tooth around a coil.By the electricity on each tooth in one section
The identical windings in series of electromotive force phase, constitutes the modular stator winding of segmented, and two sections of adjacent windings belong on stator
Different phases.
Motor uses surface convex type rotor structure, and permanent magnet Surface Mount is in rotor core periphery.To have motor as far as possible
Big fundamental wave winding coefficient enables the tooth pitch tw of motor equal with pole span τ, as shown in Figure 2 to increase torque density.
Divided stator segmentation durface mounted permanent magnet synchronous motor in the present invention selects 84 slot, 86 pole motor, and motor stator is 6 sections
Structure, the overall structure of motor are distinguished as shown in Figure 3, Figure 4 with wherein+A segment structure.
The divided stator segmentation durface mounted permanent magnet synchronous motor that the present invention designs is applied to electric helicopter main rotor directly to drive
Permanent magnet synchronous motor, stator yoke thickness 6.56mm, stator facewidth 13.35mm, pole embrace 0.86, gas length 2.50mm,
Permanent magnetism body thickness 8.39mm, rotor yoke thickness 6.73mm, axial length 50.39mm obtain average of torque by finite element simulation
For 3041Nm, torque pulsation 14.12%.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within.
Claims (4)
1. a kind of durface mounted permanent magnet synchronous motor of stator-sectional, including stator and rotor, which is characterized in that the stator includes
h1The identical stator-sectional for fanning annular of a structure, h1=mk1, by identical with stator material between two neighboring stator-sectional
The phase shift magnetic inductive block connection of fan annular, motor use single layer concentratred winding structure, are equably provided with k on each stator-sectional2It is a
For slot for placing winding coil, electrical angle shared by each phase shift magnetic inductive block is γs=180 ° of k3/ m, wherein m is motor
The number of phases, k1For positive integer, k2For even number, k3=1 or 2, and k1、k2、k3Meet following relationship:P is
The tooth pitch of motor number of pole-pairs, stator is equal with pole span.
2. the durface mounted permanent magnet synchronous motor of stator-sectional according to claim 1, which is characterized in that the number of phases of the motor
M is 3, and k3When=1, stator-sectional number h1For 6 multiple, two neighboring stator-sectional is wound with winding wire clockwise
The induced potential phase phase difference 2k of coil on first stator tooth of circle2The electrical angle of π+π/3, and clockwise direction stator-sectional
Spatially by A ,-B, C ,-A, B ,-C phase ... aligned transfer, k2For even number.
3. the durface mounted permanent magnet synchronous motor of stator-sectional according to claim 1, which is characterized in that the number of phases of the motor
M is 3, and k3When=2, stator-sectional number h1For 3 multiple, two neighboring stator-sectional is wound with winding wire clockwise
The induced potential phase phase difference 2k of coil on first stator tooth of circle2The π electrical angle of+2 π/3, and clockwise direction divided stator
Section spatially presses the aligned transfer of A, C, B phase ..., k2For even number.
4. the durface mounted permanent magnet synchronous motor of stator-sectional according to claim 1, which is characterized in that the durface mounted permanent magnet
The winding coefficient of synchronous motor is less than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910417438.2A CN110098708A (en) | 2019-05-20 | 2019-05-20 | A kind of durface mounted permanent magnet synchronous motor of stator-sectional |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910417438.2A CN110098708A (en) | 2019-05-20 | 2019-05-20 | A kind of durface mounted permanent magnet synchronous motor of stator-sectional |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110098708A true CN110098708A (en) | 2019-08-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910417438.2A Pending CN110098708A (en) | 2019-05-20 | 2019-05-20 | A kind of durface mounted permanent magnet synchronous motor of stator-sectional |
Country Status (1)
| Country | Link |
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| CN (1) | CN110098708A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1848607A (en) * | 2005-04-17 | 2006-10-18 | 谢庆生 | Multi-directional mixed permanent-magnetic energy-saving electric machine |
| CN1862928A (en) * | 2006-06-09 | 2006-11-15 | 天津大学 | Modularized stator structure low-speed DC brushless motor |
| CN1889340A (en) * | 2006-07-11 | 2007-01-03 | 天津大学 | Modular stator structural low-speed DC brushless motor |
| CN101030712A (en) * | 2007-01-09 | 2007-09-05 | 天津大学 | Low-speed DC direct-driven brushless motor with segmented modularized stator structure |
| CN101882819A (en) * | 2010-07-08 | 2010-11-10 | 东南大学 | Rectilinear cylindrical switching magnetic flux permanent magnet generator |
| CN201918812U (en) * | 2010-12-10 | 2011-08-03 | 上海电机学院 | Enhanced magnetic flux switching doubly salient motor with magnetic gathering effect for outer rotor magnetic field |
-
2019
- 2019-05-20 CN CN201910417438.2A patent/CN110098708A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1848607A (en) * | 2005-04-17 | 2006-10-18 | 谢庆生 | Multi-directional mixed permanent-magnetic energy-saving electric machine |
| CN1862928A (en) * | 2006-06-09 | 2006-11-15 | 天津大学 | Modularized stator structure low-speed DC brushless motor |
| CN1889340A (en) * | 2006-07-11 | 2007-01-03 | 天津大学 | Modular stator structural low-speed DC brushless motor |
| CN101030712A (en) * | 2007-01-09 | 2007-09-05 | 天津大学 | Low-speed DC direct-driven brushless motor with segmented modularized stator structure |
| CN101882819A (en) * | 2010-07-08 | 2010-11-10 | 东南大学 | Rectilinear cylindrical switching magnetic flux permanent magnet generator |
| CN201918812U (en) * | 2010-12-10 | 2011-08-03 | 上海电机学院 | Enhanced magnetic flux switching doubly salient motor with magnetic gathering effect for outer rotor magnetic field |
Non-Patent Citations (2)
| Title |
|---|
| WENYING JIANG ; PATEL B. REDDY ; T.M. JAHNS ; T.A. LIPO ; RAMASA: "Segmented permanent magnet synchronous machines for wind energy conversion system", 《 IEEE》 * |
| YIGUANG CHEN ; ZHIMING DU ; WEIGANG ZHONG ; LINGBIN KONG: "Modular stator structure permanent magnet synchronous machine", 《IEEE》 * |
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Application publication date: 20190806 |
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| RJ01 | Rejection of invention patent application after publication |