CN109217531A - A kind of assistant starting electric motor end cap - Google Patents
A kind of assistant starting electric motor end cap Download PDFInfo
- Publication number
- CN109217531A CN109217531A CN201811108852.7A CN201811108852A CN109217531A CN 109217531 A CN109217531 A CN 109217531A CN 201811108852 A CN201811108852 A CN 201811108852A CN 109217531 A CN109217531 A CN 109217531A
- Authority
- CN
- China
- Prior art keywords
- end cap
- motor
- protrusion
- assistant starting
- electric motor
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
-
- 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
- H02K7/20—Structural association with auxiliary dynamo-electric machines, e.g. with electric starter motors or exciters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The present invention relates to a kind of assistant starting electric motor end caps, belong to motor field, including driving motor, assistant starting motor, the assistant starting motor and driving motor are coaxially connected, driving motor is double winding induction machine, the double winding of driving motor includes main winding and auxiliary winding, double winding is all connected with current inverter, the driving motor and assistant starting motor are arranged in same electric machine casing, electric motor end cap is provided between driving motor and assistant starting motor, bearing is provided between electric motor end cap and armature spindle, the electric motor end cap is round bending plate, each end cap is four sections.
Description
Technical field
The present invention relates to a kind of electric motor end caps, and in particular to the shielding end cap between driving motor and assistant starting motor.
Background technique
The matter of utmost importance of motor operation is starting, this is because high power motor, powerful directly initiates electric current meeting
It causes biggish line voltage distribution to land, large effect can be generated to power grid, also there is biggish impact to motor, while to setting
It is harmful for itself.So selecting reasonable Starting mode by the great attention of related technical personnel.
AC high-voltage motor generallys use three kinds of Starting mode: full voltage starting, reduced-voltage starting and variable frequency starting.Total pressure opens
Dynamic method is easy, and detent torque is big, but can cause voltage ripple of power network, forms the impact to power grid；Motor insulation is injured, is reduced
Electrical machinery life.Variable frequency starting performance is good but expensive, only on probation and very important occasion, and this starting method is suitable
Answering property is poor, and reactor be removed when there is also the danger of secondary rush of current and torque shock.
Currently, the mode that electric motor starting generally uses separate excitation to control, and assistant starting motor and drive when separate excitation starting
Magnetic coupling can be generated between dynamic motor, in order to prevent magnetic coupling, electric motor end cap is by uniform thickness gold by metallic shield in the prior art
Monolith made of metal thin plate circumferentially shields, and vortex is obstructed, and degree is low, and eddy-current loss is big.Since metallic shield is relatively thin, metal screen
Temperature rise is covered compared with remaining component height, and for especially generator in certain exceptional operating conditions, metallic shield fever is serious, heat dissipation effect
Poor, the temperature of metallic shield is higher, influences the safe operation and service life of generating set.
Summary of the invention
The technical solution adopted by the present invention to solve the above problem is as follows: a kind of assistant starting electric motor end cap, including driving electricity
Machine, assistant starting motor, the assistant starting motor and driving motor are coaxially connected, and the assistant starting motor is permanent magnetism
Halbach array structural electromotor, driving motor are double winding induction machine, and the double winding of driving motor includes main winding and auxiliary
Winding, double winding are all connected with current inverter, and the main winding connects the first current inverter, the second electricity of auxiliary winding connection
Inverter is flowed, when the motor is energized, auxiliary winding and assistant starting motor start simultaneously, when driving motor revolving speed reaches predetermined state
After preset duration afterwards, start main winding, assistant starting motor stopping, main winding and auxiliary winding work at the same time, and feature exists
Be arranged in same electric machine casing in: the driving motor and assistant starting motor, driving motor and assistant starting motor it
Between be provided with electric motor end cap, be provided with bearing between electric motor end cap and armature spindle, the electric motor end cap is round bending plate, each
The end cap is four sections, and the first segment motor vertical axis direction of end cap is arranged, the folder between the second segment and first segment of end cap
Angle is 150 degree of -175 degree, and the angle between the third section and second segment of end cap is 120 degree of -150 degree, the 4th section of end cap with
Angle between third section is 100 degree of -120 degree, and described 4th section is arranged for parallel electrical machinery axis direction, is arranged on the end cap
There is protrusion.
The bending direction of the end cap is towards assistant starting motor.
According to an embodiment of the invention, the first segment of the end cap, second segment, third section, the 4th section of length along axial direction
Than for 2:5:8:7.
According to an embodiment of the invention, the protrusion includes that the first protrusion of first segment is arranged in, the second of second segment is convex
It rises, the third protrusion of third section, the 4th section of the 4th protrusion.
According to an embodiment of the invention, the width of first protrusion is equal with the width degree of the second protrusion, third protrusion
Width be the first ledge width a quarter, the 4th protrusion width be first protrusion half.Described 4th is convex
The one end risen is arranged between two third protrusions.
According to an embodiment of the invention, the height of second protrusion is 2 times of the height of the first protrusion.
The beneficial effects of the present invention are: on the one hand the structure of end cap setting protrusion can directly hinder the whirlpool of metallic shield
Stream reduces loss, efficiently avoids the big defect of conventional metals shielding construction eddy-current loss, meanwhile, end cap setting protrusion
Structure, which is inducted, is vortexed the leakage field of resistance end parasitism, reduces the leakage magnetic flux that driving motor End winding generates and enters assistant starting electricity
Machine；On the other hand the circulation path of cooling end cap gas is increased indirectly.
Beneficial effects of the present invention are as follows:
Of the invention can be effectively reduced two electricity in assistant starting motor and driving motor setting auxiliary drive motor end cap
Magnetic coupling between machine.
The present invention starts motor by auxiliary winding and auxiliary starter motor simultaneously can be improved the starting effect of motor, prevent
Electric motor starting fluctuation.
Main winding is run simultaneously with auxiliary winding when the present invention passes through motor operation, improves the carrying load ability of motor.
The present invention can effectively shield the magnetic circuit between assistant starting motor and driving motor using four sections of end caps.
Detailed description of the invention
Fig. 1 is separately excited machine view of the invention；
Fig. 2 is end cap view of the invention.
Specific embodiment
Referring to Fig. 1-2, a kind of assistant starting electric motor end cap, including driving motor, assistant starting motor 7, fan 2 are described
Driving motor includes fixed 4 son and rotor 5, and the assistant starting motor and driving motor are coaxially connected, the assistant starting motor
For permanent-magnet Halbach array structure motor, driving motor is double winding induction machine, and the double winding of driving motor includes main winding
And auxiliary winding, double winding are all connected with current inverter, the main winding connects the first current inverter, auxiliary winding connection
Second current inverter, when the motor is energized, auxiliary winding and assistant starting motor start simultaneously, when driving motor revolving speed reaches pre-
After preset duration after determining state, start main winding, assistant starting motor stopping, main winding and auxiliary winding work at the same time, institute
It states driving motor and assistant starting motor is arranged in same electric machine casing 3, the electric machine casing is mounted on motor by bearing 1
On axis 9, it is provided with electric motor end cap 6 between driving motor and assistant starting motor, is provided between electric motor end cap and armature spindle
Bearing 8, the electric motor end cap are round bending plate, and each end cap is four sections, the first segment 1-1 motor vertical axis of end cap
Direction setting, the angle between the second segment 1-2 and first segment of end cap be for 150 degree -175 spend, the third section 1-3 of end cap and
Angle between second segment is 120 degree of -150 degree, and the 4th section of angle between 1-4 and third section of end cap is 100 degree -120
Degree, described 4th section is arranged for parallel electrical machinery axis direction, is provided with protrusion on the end cap.Wherein main winding and auxiliary winding
Left and right settings is provided with insulation paper insulation in the same stator slot of driving motor between main winding and auxiliary winding.
The bending direction of the end cap can surround assistant starting motor completely, can be improved towards assistant starting motor
The ability for shielding vortex, prevents the magnetic coupling between assistant starting motor and driving motor.The bending direction direction of the end cap
Assistant starting motor.
First segment, second segment, third section, the 4th section of length ratio along axial direction of the end cap are 2:5:8:7.The protrusion
The first protrusion 1-5 including first segment is arranged in, the second protrusion 1-6, third protrusion 1-7 of third section of second segment, the 4th section
The 4th protrusion 1-8.The width of first protrusion is equal with the width degree of the second protrusion, and the width of third protrusion is first convex
The a quarter of width is played, the width of the 4th protrusion is the half of the first protrusion.One end setting of 4th protrusion exists
Between two third protrusions.The height of second protrusion is 2 times of the height of the first protrusion.One end for second protrusion
It is arranged between two the first protrusions, the temperature of end cap can be effectively reduced by the length and width of setting protrusion, is guaranteed
The safe and reliable operation of motor.
Finally, it should be noted that obviously, the above embodiment is merely an example for clearly illustrating the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the art, it can also do on the basis of the above description
Other various forms of variations or variation out.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
The obvious changes or variations that Shen goes out are still in the protection scope of this invention.
Claims (7)
1. a kind of assistant starting electric motor end cap, including driving motor, assistant starting motor, the assistant starting motor and driving electricity
Machine is coaxially connected, and the assistant starting motor is permanent-magnet Halbach array structure motor, and driving motor is double winding induced electricity
Machine, the double winding of driving motor include main winding and auxiliary winding, and double winding is all connected with current inverter, and the main winding connects
The first current inverter is connect, auxiliary winding connects the second current inverter, when the motor is energized, auxiliary winding and assistant starting motor
Start simultaneously, after preset duration after driving motor revolving speed reaches predetermined state, starts main winding, assistant starting motor stops
Machine, main winding and auxiliary winding work at the same time, it is characterised in that: the driving motor and assistant starting motor are arranged in same electricity
In casing body, it is provided with electric motor end cap between driving motor and assistant starting motor, is arranged between electric motor end cap and armature spindle
There is bearing, the electric motor end cap is round bending plate, and each end cap is four sections, the first segment motor vertical axis side of end cap
To setting, the angle between the second segment and first segment of end cap is to spend for 150 degree -175, between the third section and second segment of end cap
Angle be 120 degree -150 degree, the 4th section of angle third section between of end cap be 100 degree -120 spend, described 4th section is
Parallel electrical machinery axis direction is arranged, and is provided with protrusion on the end cap.
2. assistant starting electric motor end cap according to claim 1, it is characterised in that: the bending direction of the end cap is towards auxiliary
Help starting motor.
3. assistant starting electric motor end cap according to claim 2, it is characterised in that: the first segment of the end cap, second segment,
Third section, the 4th section of length ratio along axial direction are 2:5:8:7.
4. assistant starting electric motor end cap according to claim 3, it is characterised in that: the protrusion includes being arranged in first segment
First protrusion, second segment second protrusion, the third protrusion of third section, the 4th section the 4th protrusion.
5. assistant starting electric motor end cap according to claim 4, it is characterised in that: the width and second of first protrusion
The width of protrusion is equal, and the width of third protrusion is a quarter of the first ledge width, and the width of the 4th protrusion is first convex
The half risen.
6. assistant starting electric motor end cap according to claim 5, it is characterised in that: one end setting of the 4th protrusion exists
Between two third protrusions.
7. assistant starting electric motor end cap according to claim 6, it is characterised in that: the height of second protrusion is first
2 times of the height of protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108852.7A CN109217531A (en) | 2018-10-17 | 2018-10-17 | A kind of assistant starting electric motor end cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108852.7A CN109217531A (en) | 2018-10-17 | 2018-10-17 | A kind of assistant starting electric motor end cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109217531A true CN109217531A (en) | 2019-01-15 |
Family
ID=64985101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811108852.7A Pending CN109217531A (en) | 2018-10-17 | 2018-10-17 | A kind of assistant starting electric motor end cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109217531A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688466A (en) * | 2020-12-08 | 2021-04-20 | 康富科技有限公司 | High-power medium-speed generator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5097163A (en) * | 1989-12-22 | 1992-03-17 | Sundstrand Corporation | Electrical power generating system having reduced conducted emissions in output power |
| CN2192095Y (en) * | 1994-05-20 | 1995-03-15 | 江西三波电机总厂 | Harmonic exciting brushless AC synchronous generator |
| CN2884672Y (en) * | 2006-03-31 | 2007-03-28 | 泰豪科技股份有限公司 | Double-purpose brushless synchronous dynamo able to generate and electric drive |
| CN103078436A (en) * | 2013-01-28 | 2013-05-01 | 哈尔滨理工大学 | Split piano type shielding device on end part of steam-turbine generator |
| CN206250877U (en) * | 2016-12-02 | 2017-06-13 | 浙江国蒙汽车零部件有限公司 | A kind of motor cover with shielding |
| CN207053353U (en) * | 2017-07-25 | 2018-02-27 | 武汉扬华电气股份有限公司 | A kind of brushless double feed generator of Wound-rotor type hybrid permanent magnet excitation |
-
2018
- 2018-10-17 CN CN201811108852.7A patent/CN109217531A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5097163A (en) * | 1989-12-22 | 1992-03-17 | Sundstrand Corporation | Electrical power generating system having reduced conducted emissions in output power |
| CN2192095Y (en) * | 1994-05-20 | 1995-03-15 | 江西三波电机总厂 | Harmonic exciting brushless AC synchronous generator |
| CN2884672Y (en) * | 2006-03-31 | 2007-03-28 | 泰豪科技股份有限公司 | Double-purpose brushless synchronous dynamo able to generate and electric drive |
| CN103078436A (en) * | 2013-01-28 | 2013-05-01 | 哈尔滨理工大学 | Split piano type shielding device on end part of steam-turbine generator |
| CN206250877U (en) * | 2016-12-02 | 2017-06-13 | 浙江国蒙汽车零部件有限公司 | A kind of motor cover with shielding |
| CN207053353U (en) * | 2017-07-25 | 2018-02-27 | 武汉扬华电气股份有限公司 | A kind of brushless double feed generator of Wound-rotor type hybrid permanent magnet excitation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688466A (en) * | 2020-12-08 | 2021-04-20 | 康富科技有限公司 | High-power medium-speed generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8987967B2 (en) | Claw-pole motor with permanent magnet and electrically exciting parts | |
| Mitcham et al. | Favourable slot and pole number combinations for fault-tolerant PM machines | |
| Richter et al. | The Ferrite Permanent Magnet AC Motor---A Technical and Economical Assessment | |
| EP0261953A2 (en) | Full flux reversal variable reluctance machine | |
| Xing et al. | Study on anti-demagnetization of magnet for high speed permanent magnet machine | |
| CN103730997A (en) | Excitation integrated type brushless synchronous motor | |
| JP2007181305A (en) | Permanent magnet type synchronous motor and compressor using the same | |
| US20150372568A1 (en) | Electrical machine with direct stator cooling | |
| CN109217531A (en) | A kind of assistant starting electric motor end cap | |
| CN117081280A (en) | Stator assembly and motor | |
| WO2020224588A9 (en) | Planar induction coaxial multi-excitation group multi-stator group power generator | |
| CN109768688A (en) | A kind of novel permanent magnetic synchronous motor structure | |
| CN109412282A (en) | A kind of multiphase fault-tolerant magneto | |
| EP2151347A1 (en) | Arrangement for generating a traction force of a track bound vehicle | |
| RU2105405C1 (en) | Like-pole inductor generator with built-in power rectifier | |
| CN212649344U (en) | Double-coil alternating-current permanent magnet synchronous linear motor | |
| RU203857U1 (en) | Asynchronous traction electric machine for driving urban electric transport | |
| RU224471U1 (en) | Synchronous brushless electric motor with independent excitation | |
| CN104393790B (en) | Conduction magnetic force generating set | |
| Al-Ani et al. | Electrical machine rotor shielding for low cost electrical drive | |
| US11770035B2 (en) | Laminated core for an electric machine | |
| RU101281U1 (en) | ELECTRIC MACHINE CONVERTER | |
| Xu et al. | Investigation of permanent magnet segmentations and gaps in 2-Pole high-speed permanent magnet motor with toroidal winding | |
| CN112968639B (en) | Pulse generator excitation system | |
| RU177673U1 (en) | ELECTRIC MACHINE ROTOR |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190115 |