CN1030674A - The improvement of motor - Google Patents
The improvement of motor Download PDFInfo
- Publication number
- CN1030674A CN1030674A CN 88104098 CN88104098A CN1030674A CN 1030674 A CN1030674 A CN 1030674A CN 88104098 CN88104098 CN 88104098 CN 88104098 A CN88104098 A CN 88104098A CN 1030674 A CN1030674 A CN 1030674A
- Authority
- CN
- China
- Prior art keywords
- motor
- stator
- rotor
- coil
- space
- 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
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
- H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
- H02K49/046—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with an axial airgap
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a kind of motor, it have be contained in the axle 4 on and between two stators 21 rotatable rotor 5.In stator coil 24, feed alternating current and can make motor as motor, in coil 25, feed direct current and then make machine operation in mode of braking to stator excitation.
Description
The present invention relates to a kind of device that can be used as dynamometer machine or motor.Purpose provides a kind of rotating energy (promptly as dynamometer machine) that can absorb as required, or produces the device of rotating energy (promptly as motor).
Owing to the actual performance of engine and toxic emission problem become and become more and more important along with all carrying out restricted legislation all over the world rapidly, more, to a kind of demand of the dynamometer machine that can load engine according to actual operating conditions in continuous growth.Particularly require this dynamometer machine should be able to drag engine (simulation for example the working condition of engine when automobile downhill), and can brake, promptly as the load (simulating for example working condition of engine when automobile quickens) of engine.
Motor provided by the present invention comprises one and is installed in rotatable magnetic disk type rotor between a pair of stator, but each stator comprises the coil of indirect current motor is moved as motor, and can lead to galvanic coil and make machine operation in mode of braking, so that be absorbed in that part of energy that becomes heat in the rotor.
With reference now to the description of drawings embodiments of the invention,, shown the plane graph that comprises the rotor axis part among the figure.
This device comprises a base 1 that two gudgeons 2 are housed, and is installed with a trunnion axis 4 that is contained in the bearing 3 between two gudgeons.The garden shape disk rotor 5 on a plane is housed on axle 4, and it has uniformity to magnetic and electricity, and is made of the material of low-resistivity and high magnetic permeability.In use, axle 4 is connected with a tested engine.
Limit a cooling space 11 by outer wall (Boundary walls) 10, rotor 5 rotates betwixt.Outer wall 10 comprises two the toroidal membrane 10as parallel with rotor 5, its inner rim links to each other with the outer wall 10b that centers on axle 4, the but water inlet 12 of water inflow cooling space part of cooling is housed in outer wall 10b inside, therefore cooling water flow is arranged through rotor 5 between dividing plate 10a, the ring duct 14 that enters surrounding rotor 5 is discharged from delivery port 16.Dividing plate 10 is equipped with the guiding coolant and the interlayer that this dividing plate constitutes is played the radial slot of reinforcement effect.
In the present embodiment, rotor 5 is between two stators 20, and stator 20 has a plurality of iron cores 21 around the evenly distributed structure of axis, and the iron core of rotor one side aligns one by one with the iron core of opposite side.Annular outer wall 22a and 22b can be made by stainless steel, and the stator space 23 and the outer end of iron core 21 are sealed, and edge is equipped with dividing plate 10a within it.The inner edge of this outer wall curves inwardly, the seam electron beam welding of aduncate inner edge and dividing plate 10a.Dividing plate that welds together and outer wall use identical materials, thereby are convenient to connect, and can make thermal stress drop to minimum.
Each iron core 21 is equipped with a coil 24 that is communicated with variable AC power and a coil 25 that is communicated with variable DC power supply.Stator space 23 is full of heat conducting material, and oil or sand are suitable for doing this heat conducting material, and heat can be conducted into coolant through dividing plate 10a by stator space.
When said apparatus is used for mode of braking, in rotor 5, produce eddy current, cause a large amount of heatings.This heat is taken away with coolant, and because effectively cooling can make the diameter of rotor do very for a short time, because high power loss is feasible in rotor.The suffered mechanical stress of other part that this means bearing and motor reduces greatly, and its result can run up motor.In addition, rotor has little inertia, enables to quicken rapidly or slow down.
Dividing plate 10a does not have the position that directly contacts with other interlayer can be at its stator one side malleableize epoxy resin reinforcing.
Stator can be made with stacked steel disc, perhaps heavily oozes assorted (heavily lodead) casting with resin material and iron particle and forms, and makes to have reliable electric insulation between the iron particle. This structure can reduce the eddy current that produces in the stator.
Coil by Alternating Current Power Supply is divided into two-phase or multiphase, when winding during from power supply (having the identical number of phases) feeding alternating current, produces the magnetic pole (arctic and a South Pole constitute a pair of magnetic pole) of one or more pairs of opposite polarities; So magnetic pole (or main field) is around axial vane surface (the axial face of the stator) rotation of stator.
Observe from the angle of axial vane surface (axial face), magnetic pole direction of rotation in each stator is opposite, and (promptly the magnetic pole of a stator turns clockwise, another magnetic pole of the stator is rotated counterclockwise), therefore, when two stators were installed on opposite, rotor two sides, the direction of rotation of two main fields was identical.
The frequency of alternating current can change to required maximum by zero.
Because frequency is in check, the rotating speed of main field is equal to or higher than the rotating speed of rotor, when speed difference occurring between the two, will produce eddy current in rotor.
This eddy current produces the secondary field of himself, and it and main field interact and produce electronic torque on rotor.
This torque can be controlled (electric current is big more, and torque is big more) by the value and the frequency that change alternating current in the winding.Along with increasing of frequency, torque changes according to the intrinsic torque/speed characteristics of motor.The speed of the FREQUENCY CONTROL rotor by changing alternating current, frequency is high more, and then speed is high more.Motor is two-way, by suitable phase sequence power supply motor is rotated to both direction.
The direct current winding is divided into a plurality of coils, therefore feeds the magnetic pole (a pair of magnetic pole comprises an arctic and a South Pole) that direct current can produce one or more pairs of opposite polarities in winding.This winding feeds direct current, and its magnetic pole (or main field) is static with respect to stator.
Along with the rotation of rotor, its each several part is subjected to the effect of alternating magnetic field by magnetic pole the time, thereby produces eddy current in rotor.This eddy current produces the secondary field of himself, and it and main field interact, and produces a braking moment on rotor.The direct current that changes in the winding just can be controlled this braking moment.Eddy current also can cause resistance heating in rotor, these heats are taken away by the coolant of the rotor surface of flowing through.
An ECU (Electrical Control Unit) can be set, it can change the polarity of alternating current continuously, frequency and value, for example change to polarity that main field with highest frequency be rotated counterclockwise with the polarity that highest frequency turns clockwise by zero frequency from main field, also the Control current value changes to desired maximum from zero simultaneously.This control unit can be controlled direct current/voltage simultaneously, makes motor can become mode of braking or absorption pattern from the motor mode under any speed.
Claims (8)
1, a kind of motor, it is characterized in that comprising that is installed in a rotatable magnetic disk type rotor between a pair of stator, but each stator has indirect current to make the coil of motor as the motor operation, and can lead to direct current and make the coil of machine operation in mode of braking, be used for absorbing that part of energy that rotor becomes heat.
2, motor as claimed in claim 1, it is evenly distributed to it is characterized in that leading to galvanic coil encircling axis, and the coil of a stator is relative with the coil of another stator, at these magnetic poles of rotor both sides axially-aligned with the inswept rotor of opposite polarity.
3, as the described motor of above-mentioned any one claim, its rotor is contained in the cooling space, and coolant can flow to outlet from inlet in this space.
4, motor as claimed in claim 3, the outer wall of its cooling space comprise two near rotors and with rotor parallel annular thin-walled.
5, motor as claimed in claim 4, wherein coil is contained in the stator space, and the part of the outer wall in this space is made of above-mentioned thin-walled.
6, motor as claimed in claim 5, wherein thin-walled with finish being connected of other outer wall of stator space with electron beam or other accurate solder technology.
7, as the described motor of claim 4 to 6, wherein thin-walled is radially slotted.
8,, wherein around coil oil, sand or other heat conducting material are housed in the stator space as the described motor of the dependent claims of claim 5 or any one claim 5.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8710336 | 1987-04-30 | ||
| GB08710336A GB2194632A (en) | 1986-07-17 | 1987-07-10 | Flues for fuel-effect gas fires |
| GB8726127 | 1987-11-07 | ||
| GB878726127A GB8726127D0 (en) | 1987-11-07 | 1987-11-07 | Dynamometers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1030674A true CN1030674A (en) | 1989-01-25 |
Family
ID=26292477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88104098 Pending CN1030674A (en) | 1987-04-30 | 1988-04-30 | The improvement of motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1030674A (en) |
| WO (1) | WO1988008636A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959855A (en) * | 2010-06-25 | 2013-03-06 | 丰田自动车株式会社 | Motor drive apparatus and vehicle mounted with same |
| WO2016106709A1 (en) * | 2014-12-31 | 2016-07-07 | Techtronic Industries Co., Ltd. | Method and system for braking a motor |
| CN107449961A (en) * | 2017-09-13 | 2017-12-08 | 中国船舶重工集团公司第七0三研究所 | A kind of through-flow structure of novel hydropower dynamometer |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19532136A1 (en) * | 1995-08-31 | 1997-03-06 | Clouth Gummiwerke Ag | Drive system, in particular for a motor vehicle, and method for operating the same |
| FR2812138B1 (en) * | 2000-07-20 | 2003-06-27 | Applic Entropologiques Moteurs | SHEET ROTOR FOR EDGE CURRENT BRAKE AND DEVICE COMPRISING SUCH A ROTOR |
| GB0302235D0 (en) * | 2003-01-31 | 2003-03-05 | Holset Engineering Co | Electric motor assisted turbocharger |
| US9413217B2 (en) | 2012-06-28 | 2016-08-09 | General Electric Company | Electromagnetic braking systems and methods |
| US9601918B2 (en) | 2012-06-28 | 2017-03-21 | General Electric Company | Systems and methods for controlling acceleration of a power generator |
| US9407187B2 (en) | 2012-06-28 | 2016-08-02 | General Electric Company | System and method for improving response time of a braking unit |
| EP3084929B1 (en) * | 2013-12-20 | 2021-04-28 | Swedish PowerTrain Techcenter AB | Stator for an electric machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1135764A (en) * | 1965-02-25 | 1968-12-04 | Westinghouse Brake & Signal | A dynamo electric machine for drive and/or braking purposes |
| US3543066A (en) * | 1968-12-23 | 1970-11-24 | Trw Inc | Discoidal electric motor with compensating windings |
| FR2041496A5 (en) * | 1969-04-25 | 1971-01-29 | Merlin Gerin | |
| DE2650147A1 (en) * | 1976-10-30 | 1978-05-03 | Froude Eng Ltd | Eddy current machine with field system - has disc rotor with loss elements and magnetic field generated by field system |
-
1988
- 1988-04-28 WO PCT/GB1988/000332 patent/WO1988008636A1/en unknown
- 1988-04-30 CN CN 88104098 patent/CN1030674A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959855A (en) * | 2010-06-25 | 2013-03-06 | 丰田自动车株式会社 | Motor drive apparatus and vehicle mounted with same |
| CN102959855B (en) * | 2010-06-25 | 2015-01-21 | 丰田自动车株式会社 | Motor drive apparatus and vehicle mounted with same |
| US9054613B2 (en) | 2010-06-25 | 2015-06-09 | Toyota Jidosha Kabushiki Kaisha | Motor drive apparatus and vehicle with the same mounted thereon |
| WO2016106709A1 (en) * | 2014-12-31 | 2016-07-07 | Techtronic Industries Co., Ltd. | Method and system for braking a motor |
| CN106922205A (en) * | 2014-12-31 | 2017-07-04 | 创科实业有限公司 | The method and system of braking motor |
| CN106922205B (en) * | 2014-12-31 | 2020-03-10 | 创科实业有限公司 | Method and system for braking an electric machine |
| CN107449961A (en) * | 2017-09-13 | 2017-12-08 | 中国船舶重工集团公司第七0三研究所 | A kind of through-flow structure of novel hydropower dynamometer |
| CN107449961B (en) * | 2017-09-13 | 2023-05-26 | 中国船舶重工集团公司第七0三研究所 | Novel hydraulic dynamometer through-flow structure |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1988008636A1 (en) | 1988-11-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |