CN109638999A - A kind of low-loss, hollow shaft radiator structure p-m rotor - Google Patents
A kind of low-loss, hollow shaft radiator structure p-m rotor Download PDFInfo
- Publication number
- CN109638999A CN109638999A CN201811497244.XA CN201811497244A CN109638999A CN 109638999 A CN109638999 A CN 109638999A CN 201811497244 A CN201811497244 A CN 201811497244A CN 109638999 A CN109638999 A CN 109638999A
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- China
- Prior art keywords
- rotor
- punching
- loss
- low
- hollow shaft
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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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
Abstract
The present invention relates to locomotive traction field direct-drive permanent-magnetism motor, specially a kind of low-loss, hollow shaft radiator structure p-m rotor.The problem that lightening hole is few, and rotor quality is big, rotor core loss is larger is solved on existing rotor punching.A kind of low-loss, hollow shaft radiator structure p-m rotor, be provided with multiple permanent magnet troughs around its center in the punching of p-m rotor；Each permanent magnet trough constitutes a V-structure with adjacent permanent magnet trough respectively, and in two adjacent V-structures, an opening is towards punching radial outside, and an opening is towards punching radially inner side；The V-structure opening of each opening outwardly is equipped with a d-axis magnetic circuit inverted triangle hole；The V-structure opening of each opening inwardly is equipped with one group of quadrature axis magnetic circuit circular hole in the word of falling product distribution.The advantages that efficient magnetic conduction of structure collection, low-loss, lightweight, more demanding to vehicle base space, rotor cooling effect is poor, advantage is significant in the big situation of motor output torque.
Description
Technical field
The present invention relates to locomotive traction field direct-drive permanent-magnetism motor, specially a kind of low-loss, hollow shaft radiator structure
P-m rotor.
Background technique
In locomotive traction field, direct-drive permanent-magnetism motor has the characteristics that output torque is big, bulky, by locomotive wheel diameter, hollow
The size of the limitation of shaft size, motor is restricted.In a limited space in, rotor need in the case where meeting electromagnetic performance ruler
It is very little need to accomplish it is smaller, more rationally；Rotor needs to reduce rotor own loss and increases heat sinking function in confined space simultaneously.
To meet traction electric machine volume, weight, rotor seal requirement, it is necessary to design the completely new low-loss of one kind, for cooling turn
Minor structure, can satisfy every particular requirement that locomotive directly drives traction.
The prior art related to the present invention
Existing rotor technology scheme is as shown in Figure 3,4, and its characteristics are as follows:
Existing lamination structure is simple, opens up keyway using setting lightening hole, inner circle between " V " type structure permanent magnet slot, permanent magnet,
It is connect with positioning key with shaft.
The shortcomings that prior art:
A. motor pole number is few, and permanent magnet accounts for smaller, and lightening hole is few in punching, when rotor quality Datong District the core loss of rotor compared with
Greatly；
B. existing rotor uses solid shafting, causes that quality is big, can not radiate.
Summary of the invention
Traction field directly to be driven in locomotive, is influenced by gauge, locomotive wheel diameter, motor outer dimension and weight are limited,
The output torque of motor is multiplied again simultaneously, and conventional design thinking is unable to satisfy the performance of motor, quality requirement.In order to solve
Problem above needs to guarantee the output torque of motor using the special rotor that can assemble more permanent magnets, while also needing to control
Quality of rotor of motor, the loss for reducing rotor, the present invention can only using optimization rotor magnetic circuit, reduce unnecessary redundancy size,
Permanent magnet dosage is improved to solve small motor size space, light-weight, overload magnification, big, rotor heat dissipation difficulty of output torque etc. one
Series of problems.
The present invention adopts the following technical solutions realizes: a kind of low-loss, hollow shaft radiator structure p-m rotor, forever
Multiple permanent magnet troughs are provided with around its center in the punching of magnet rotor；Each permanent magnet trough is constituted with adjacent permanent magnet trough respectively
One V-structure, in two adjacent V-structures, for an opening towards punching radial outside, an opening is inside towards punching diameter
Side；The V-structure opening of each opening outwardly is equipped with a d-axis magnetic circuit inverted triangle hole；The V-structure of each opening inwardly
Opening is equipped with one group of quadrature axis magnetic circuit circular hole in the word of falling product distribution.
Further, p-m rotor uses hollow Rotating shaft strocture.
The present invention is suitable for the novel rotor of locomotive direct-drive permanent-magnetism traction, using hollow shaft, lightweight rotor punching, " V "
Type magnetic Circuit Design, design collection loss of weight simultaneously optimize ac-dc axis magnetic circuit inverted triangle hole, adjacent pole design loss of weight and optimize quadrature axis magnetic circuit
The circular hole of the word of falling product distribution.The rotor structure is reasonable, improves permanent magnet utilization rate in the rotor, reduces rotor matter
Amount reduces rotor loss.
Hollow shaft can cool down rotor inner circle, and, volume big especially for motor torque is limited, rotor can not cool down
Large-scale magneto.
Further, the hollow rotating shaft inner cavity is broad in the middle, small in ends.Add among the hollow rotating shaft inner cavity equipped with annular
Strengthening tendons.The structure of hollow rotating shaft inner cavity can reduce shaft quality, and be more advantageous to and dissipate rotor portion heat；Reinforcing rib
It then can be improved shaft strength.
Further, d-axis magnetic circuit inverted triangle hole triangle at an acute angle, bottom edge is towards punching radial outside, apex angle court
To rotor punching center.D-axis magnetic circuit inverted triangle hole on each rotor punching is equally around punching center arrangement.
The quadrature axis magnetic circuit circular hole of every group of word of falling product distribution includes three circular holes, the bottom for the delta structure that three circular holes are lined up
While towards punching radially inner side, apex angle is towards punching radial outside.
The circular hole in d-axis magnetic circuit inverted triangle hole and the distribution of the quadrature axis magnetic circuit word of falling product after above-mentioned optimization, subtracts compared to traditional
Repeated hole design, yoke portion magnetic circuit is shorter, punching is lighter, rotor loss is smaller.
The implementation of the present invention program, directly driven for locomotive traction electric machine field provide a kind of Novel lightweight, low-loss, can
The new type rotor structure of heat dissipation.The advantages that efficient magnetic conduction of structure collection, low-loss, lightweight, locomotive can be widely used in and directly driven
Traction electric machine field, especially more demanding to vehicle base space, rotor cooling effect is poor, advantage in the big situation of motor output torque
Significantly.
Detailed description of the invention
Fig. 1 rotor structure schematic diagram of the present invention.
Fig. 2 rotor punching structure schematic diagram of the present invention.
The existing rotor structural scheme of mechanism of Fig. 3.
The existing lamination structure schematic diagram of Fig. 4.
1- iron core, 2- pressing ring, 3- shaft, 4- circular outer diameter, 5- permanent magnet trough, 6- lightening hole, the hole on 7- d-axis magnetic circuit,
Hole on 8- quadrature axis magnetic circuit, 9- keyway.
Specific embodiment
D-axis magnetic circuit inverted triangle hole triangle at an acute angle, bottom edge are rushed towards punching radial outside, apex angle towards rotor
Piece center.D-axis magnetic circuit inverted triangle hole on each rotor punching is equally around punching center arrangement.
The quadrature axis magnetic circuit circular hole of every group of word of falling product distribution includes three circular holes, the bottom for the delta structure that three circular holes are lined up
While towards punching radially inner side, apex angle is towards punching radial outside.Quadrature axis magnetic circuit circular hole on each rotor is equally surround
Punching center arrangement.
It is illustrated below in conjunction with attached drawing.
1, this rotor punching is used in rail transit locomotive and directly drives traction electric machine field, and structure is as shown in Figure 1.Punching passes through
It is mounted in shaft after axially laminating by keyway 9.This rotor uses hollow Rotating shaft strocture, and punching and pressing ring hot jacket are in shaft
On；Punching " V " type magnetic Circuit Design, design collection loss of weight simultaneously optimize the ac-dc axis magnetic circuit inverted triangle hole (hole in Fig. 2 on d-axis magnetic circuit
7), adjacent pole designs loss of weight and optimizes the circular hole of the quadrature axis magnetic circuit word of falling product distribution (see the hole 5 on Fig. 2 quadrature axis magnetic circuit).It compares
Traditional lightening hole design, yoke portion magnetic circuit is shorter, punching is lighter, rotor loss is smaller.Inverted triangle hole, the word of falling product distribution in Fig. 2
Circular hole and V-structure arrangement it is closeer, compared to Fig. 4, motor pole number is more.
2, this rotor is hollow shaft structure (Fig. 1), greatly reduces shaft quality, realizes shaft lightweight；Shaft inner cavity
Small in the end and big in the middle, inner cavity area is larger, can be very good to dissipate rotor portion generation heat；Shaft intermediate cylindrical inner cavity
It does not need to finish, reduces shaft processing cost；Shaft medium design has ring-like reinforcing rib structure, improves shaft strength.
Specific implementation process
" V " type magnetic circuit, the hole with loss of weight and optimization magnetic structure, rectangle keyway is arranged in rotor punching.Punching uses high magnetic conduction
Rate, low-loss cold rolling electric sheet mold punching are cut by laser.After punching and pressing ring are fixed using tooling, heating mantle
Enter shaft.Punching inner circle is provided with rectangle keyway.
Key problem in technology point of the invention:
It is a kind of applied to the Novel lightweight of locomotive, low-loss, the permanent magnet direct-drive rotor structure that can be radiated, have loss of weight comprising design
And optimize the rotor punching of ac-dc axis magnetic circuit inverted triangle pore structure, inner cavity it is small in the end and big in the middle and be equipped with ring stiffener can
Radiate shaft.
Protection point of the invention:
1. the permanent magnet direct-drive servo-electric motor hollow shafting rotor structure that the innovative locomotive slow-speed of revolution, large torque, end-tooth are driven.
2. design has loss of weight and optimizes the rotor punching of ac-dc axis magnetic circuit inverted triangle pore structure, yoke portion magnetic circuit is shorter, weight
Gentlier, loss is smaller.
3. inner cavity hollow Rotating shaft strocture small in the end and big in the middle reduces processing and manufacturing cost, it is convenient for light-weight design, and
Increase heat dissipation area.
4. hollow shaft is provided with ring stiffener in inner cavity, for improving shaft strength.
Claims (10)
- It is provided with 1. the p-m rotor of a kind of low-loss, hollow shaft radiator structure, in the punching of p-m rotor around its center multiple Permanent magnet trough；Each permanent magnet trough constitutes a V-structure with adjacent permanent magnet trough respectively, in two adjacent V-structures, one Towards punching radial outside, one is open towards punching radially inner side opening；It is characterized in that, the V-type knot of each opening outwardly Structure opening is equipped with a d-axis magnetic circuit inverted triangle hole；It is in the word of falling product that the V-structure opening of each opening inwardly, which is equipped with one group, The quadrature axis magnetic circuit circular hole of distribution.
- 2. the p-m rotor of a kind of low-loss as described in claim 1, hollow shaft radiator structure, which is characterized in that permanent magnetism turns Son uses hollow Rotating shaft strocture.
- 3. the p-m rotor of a kind of low-loss as claimed in claim 2, hollow shaft radiator structure, which is characterized in that the sky Heart shaft inner cavity is broad in the middle, small in ends.
- 4. the p-m rotor of a kind of low-loss as claimed in claim 2 or claim 3, hollow shaft radiator structure, which is characterized in that described It is furnished with ring stiffener among hollow rotating shaft inner cavity.
- 5. such as a kind of described in any item low-losses of claim 1 ~ 3, the p-m rotor of hollow shaft radiator structure, feature exists In, d-axis magnetic circuit inverted triangle hole triangle at an acute angle, bottom edge is towards punching radial outside, and apex angle is towards in rotor punching The heart.
- 6. the p-m rotor of a kind of low-loss, hollow shaft radiator structure as described in claim 1 ~ 3, which is characterized in that every group The quadrature axis magnetic circuit circular hole of the word of falling product distribution includes three circular holes, and the bottom edge of the delta structure that three circular holes are lined up is towards punching diameter Inwardly, apex angle is towards punching radial outside.
- 7. the p-m rotor of a kind of low-loss as claimed in claim 5, hollow shaft radiator structure, which is characterized in that every group is fallen The quadrature axis magnetic circuit circular hole of product word distribution includes three circular holes, and the bottom edge for the delta structure that three circular holes are lined up is radial towards punching Inside, apex angle carry out outside towards punching.
- 8. the p-m rotor of a kind of low-loss, hollow shaft radiator structure as described in claim 1 ~ 3, which is characterized in that rotor Punching is using high permeability, low-loss cold rolling electric sheet mold punching or is cut by laser；Rotor punching is adopted with pressing ring After being fixed with tooling, shaft is inserted in heating；Punching inner circle is provided with rectangle keyway.
- 9. the p-m rotor of a kind of low-loss as claimed in claim 4, hollow shaft radiator structure, which is characterized in that rotor punching Piece is using high permeability, low-loss cold rolling electric sheet mold punching or is cut by laser；Punching and pressing ring use tooling After fixation, shaft is inserted in heating；Punching inner circle is provided with rectangle keyway.
- 10. the p-m rotor of a kind of low-loss as claimed in claim 6, hollow shaft radiator structure, which is characterized in that rotor punching Piece is using high permeability, low-loss cold rolling electric sheet mold punching or is cut by laser；Punching and pressing ring use tooling After fixation, shaft is inserted in heating；Punching inner circle is provided with rectangle keyway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811497244.XA CN109638999A (en) | 2018-12-07 | 2018-12-07 | A kind of low-loss, hollow shaft radiator structure p-m rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811497244.XA CN109638999A (en) | 2018-12-07 | 2018-12-07 | A kind of low-loss, hollow shaft radiator structure p-m rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109638999A true CN109638999A (en) | 2019-04-16 |
Family
ID=66072057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811497244.XA Pending CN109638999A (en) | 2018-12-07 | 2018-12-07 | A kind of low-loss, hollow shaft radiator structure p-m rotor |
Country Status (1)
| Country | Link |
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| CN (1) | CN109638999A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401275A (en) * | 2019-08-21 | 2019-11-01 | 上海锢维智能设备有限公司 | Lightweight rotor axis of electric and preparation method thereof |
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|---|---|---|---|---|
| CN203632390U (en) * | 2013-12-13 | 2014-06-04 | 天津瑞德科技发展有限公司 | Rare earth permanent magnetic torque motor with assembling type rotor |
| CN205315465U (en) * | 2015-09-24 | 2016-06-15 | 南昌康富科技股份有限公司 | Rotor of hollow round pivot of high tacho generator |
| CN106451858A (en) * | 2016-12-16 | 2017-02-22 | 合肥巨动力系统有限公司 | Light-weight motor rotor iron core and design method of lightening hole thereof |
| CN206412854U (en) * | 2017-01-05 | 2017-08-15 | 安徽东道新能源科技有限公司 | A kind of permanent-magnetic synchronous motor rotor and punching |
| CN107070029A (en) * | 2017-04-01 | 2017-08-18 | 上海英磁新能源科技有限公司 | A kind of high speed rotor of motor and motor |
| CN206432796U (en) * | 2016-08-28 | 2017-08-22 | 福建菲尔特电机有限公司 | A kind of rotor punching |
| CN207074899U (en) * | 2017-08-24 | 2018-03-06 | 长城汽车股份有限公司 | Rotor core |
| CN108429410A (en) * | 2018-04-28 | 2018-08-21 | 合肥巨动力系统有限公司 | A kind of rotation change mounting structure of motor hollow rotating shaft |
| CN208094314U (en) * | 2018-05-04 | 2018-11-13 | 深圳市泉胜新技术开发有限公司 | A kind of rotor structure of driving motor |
-
2018
- 2018-12-07 CN CN201811497244.XA patent/CN109638999A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203632390U (en) * | 2013-12-13 | 2014-06-04 | 天津瑞德科技发展有限公司 | Rare earth permanent magnetic torque motor with assembling type rotor |
| CN205315465U (en) * | 2015-09-24 | 2016-06-15 | 南昌康富科技股份有限公司 | Rotor of hollow round pivot of high tacho generator |
| CN206432796U (en) * | 2016-08-28 | 2017-08-22 | 福建菲尔特电机有限公司 | A kind of rotor punching |
| CN106451858A (en) * | 2016-12-16 | 2017-02-22 | 合肥巨动力系统有限公司 | Light-weight motor rotor iron core and design method of lightening hole thereof |
| CN206412854U (en) * | 2017-01-05 | 2017-08-15 | 安徽东道新能源科技有限公司 | A kind of permanent-magnetic synchronous motor rotor and punching |
| CN107070029A (en) * | 2017-04-01 | 2017-08-18 | 上海英磁新能源科技有限公司 | A kind of high speed rotor of motor and motor |
| CN207074899U (en) * | 2017-08-24 | 2018-03-06 | 长城汽车股份有限公司 | Rotor core |
| CN108429410A (en) * | 2018-04-28 | 2018-08-21 | 合肥巨动力系统有限公司 | A kind of rotation change mounting structure of motor hollow rotating shaft |
| CN208094314U (en) * | 2018-05-04 | 2018-11-13 | 深圳市泉胜新技术开发有限公司 | A kind of rotor structure of driving motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401275A (en) * | 2019-08-21 | 2019-11-01 | 上海锢维智能设备有限公司 | Lightweight rotor axis of electric and preparation method thereof |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190416 |
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| RJ01 | Rejection of invention patent application after publication |