CN2533608Y - Three-phase asynchronous motor with capacitive compensation - Google Patents
Three-phase asynchronous motor with capacitive compensation Download PDFInfo
- Publication number
- CN2533608Y CN2533608Y CN02208080U CN02208080U CN2533608Y CN 2533608 Y CN2533608 Y CN 2533608Y CN 02208080 U CN02208080 U CN 02208080U CN 02208080 U CN02208080 U CN 02208080U CN 2533608 Y CN2533608 Y CN 2533608Y
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- Prior art keywords
- compensation
- power
- motor
- reduce
- improve
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- Expired - Fee Related
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- 238000004804 winding Methods 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 abstract description 27
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000001052 transient effect Effects 0.000 abstract 1
- 230000005404 monopole Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000005405 multipole Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
一种带容性补偿的三相异步电动机，它是在已有三相异步电动机的三相绕组上，并联上三个两极板电容器或多极板电容器，来作为电动机需要的无功功率的供给，以减轻电源负担、实现就地无功补偿；以提高电动机的功率因数和运行质量，减少输电线路的无功电流，降低损耗、改善电网供电质量，由于是跟随着负载投切的补偿，所以可减少电网过补偿及暂态现象，以减少电网中昂贵的无功补偿器及补偿控制装置的事后补偿设施，来提高用电经济性。
A three-phase asynchronous motor with capacitive compensation, which is connected in parallel with three two-plate capacitors or multi-plate capacitors on the three-phase winding of the existing three-phase asynchronous motor to supply the reactive power required by the motor. To reduce the burden on the power supply and realize on-site reactive power compensation; to improve the power factor and operating quality of the motor, reduce the reactive current of the transmission line, reduce losses, and improve the power supply quality of the power grid. Since it follows the compensation of load switching, it can be Reduce over-compensation and transient phenomena in the power grid to reduce the costly reactive power compensators and compensation control devices in the power grid for post-compensation facilities to improve the economy of power consumption.
Description
The utility model belongs to the motor technology field, is high efficiency threephase asynchronous manufacturing.
Constantly need electrical equipment also along with variation along with what produce, and the core of electrical equipment is a motor; In recent years interrelated data shows China's power network and peak load (power consumption) to tool is threephase asynchronous, as everybody knows: these inductive loads are in operation, need from power network, draw idle (power) electric current, set up magnetic field to supply with its stator winding, so the voltage of electrical network is reduced, electric energy loss increases, thereby has hindered the output of active power; People improve power factor (PF) in order to reduce electric energy loss at present; Power capacitor is set as reactive power compensation on grid equipment, reduces electric energy loss, improve the electricity consumption economy.And overcompensation is harmful to, though this compensation makes moderate progress to loss, root problem does not solve; Reactive power compensation should and then change along with load variations, the particularly variation of inductive load, for example: factory's underload or stop work to have a rest and just can cause the undesirable transition effect of people unavoidably.Thereby people have set up in transformer station, electrical network, electric power system, and diversified reactive-load compensator and reactive power compensation control device reduce transition effect.Just at present, people are the electricity consumption economy of monopole asynchronous motor, usually dispatch from the factory and just worn start capapcitor, what have has also worn the operation capacitor, to improve the starting performance and the runnability of monopole asynchronous motor, and because the starting performance and the runnability of threephase asynchronous, all good comparatively speaking than single-phase, therefore, the present threephase asynchronous not charged container that dispatches from the factory, but: according to the statistics made by the departments concerned, the threephase asynchronous power consumption accounts for more than 60% of national gross generation.The essential reactive current that absorbs of asynchronous motor operation reduces voltage, and electric energy loss increases, and hinders active power output; Simultaneously also can cause problems such as the undesirable transition effect of people owing to plant produced needs the peak of power consumption and the low ebb that produce.
The purpose of this utility model, provide a kind of threephase asynchronous with capacitive compensation, it has, outside the function of existing threephase asynchronous, the reactive power that motor is needed (capacitor of wearing) is supplied with by self, to alleviate the power supply burden, reduce the comprehensive power loss of motor and reduce transition effect, to improve power factor and running quality.
In order to achieve the above object, the utility model is on existing motor, three two-plate capacitors (three-in-one capacitor) or multipole plate capacitor have been worn, its mode of wearing and present monopole asynchronous motor basic identical (what use is the capacitor of conventional two pole plates) on monopole asynchronous motor; Three pole plate lead-out wires of three two-plate capacitors or multipole plate capacitor, and be connected on the supply terminals of threephase asynchronous, capacitor is fixed on the motor field frame, and the realization threephase asynchronous is worn capacitor at random, to reach the purpose of reactive power compensation on the spot.
Owing to adopted such scheme, realize threephase asynchronous reactive power compensation at random, direct conditions is created in the generation that can be the middle-size and small-size threephase asynchronous of high efficiency; The instantaneity of reactive power compensation is provided simultaneously, has created the natural conditions of most economical economize on electricity; Can realize naturally that the power department compensation combines, can eliminate not compensating basin with user's compensation, can reduce the reactive current of transmission line, reduce electric energy loss, optimize reactive power flow, reduce inrush phenomenon, improve utilization rate of equipment and installations, improved the power of electric motor factor; So since it be the switching capacitance amount compensation of the least significant end compensation of following load, the thinnest level, the branch compensation that disperses most, also be the most close inductive load capacitive compensation it best compensate for ambient and the widest compensation space are arranged, she not only can compensate all lineal reactive powers, also can compensate first collateral line; To reduce the reactive-load compensator expensive in the electrical network and the compensating device afterwards of compensate control apparatus, improve the electricity consumption economy.
Embodiment further specifies the utility model below in conjunction with accompanying drawing:
Fig. 1: be the utility model embodiment schematic diagram.
Fig. 2: be the motor wiring schematic diagram.
Among the figure, A, B, C, be three (three-phase) terminals; A, b, c, be respectively three phase windings, the 0th, (star) winding is held altogether; U
1, U
2, V
1, V
2, W
1, W
2, be threephase motor winding termination; C is two plates capacitances; C
1Multipole plate capacitor; The Ie flow restricter; 1 terminal block; 2 wiring copper sheets; 3 power supply wirings.
By finding out among Fig. 1: Fig. 1
ABe to use three, the capacitor of two pole plates, the threephase asynchronous circuit diagram of band capacitive compensation; It is to use three present known capacitors (two plate capacitors); Three capacitors (C), six terminations connect with triangle and are combined into three terminations, and the centre flow restricter (Ie) of connecting (also can use star connection, seemingly the rated voltage of capacitor and capacity and decide; Star connection increases working voltage and reduces capacitance), connect in parallel with threephase asynchronous; Certainly it can use the patent No.: ZL992477883 " three-in-one motor capacitor ".Compensation capacity can with known several (with improve compensation capacity that power factor need determine, from the compensation capacity that improves compensation capacity that working voltage determines, determine with the compensation equivalent, because above compensation computing formula is knownly just not introduced one by one) compensate computing formula, operating mode motor compensation capacity is stably got greatly directly, and the jiggly compensation capacity of operating mode is got little straight.Fig. 1
BBe to use multipole plate capacitor (C
1), the threephase asynchronous circuit diagram of band capacitive compensation; It is to use, and the patent Shen number is: in 99106700.2 " multiple-plate energy-saving capacitors ", the multipole plate capacitor of dihedral (C
1) three terminal studs, connect in parallel with threephase asynchronous; (Ie) flow restricter, it is the leading-out terminal that is connected on compensation condenser, it limits the heavy current impact capacitor and is provided with, can or use thermal relay with fuse on the motor relatively stably in operating mode, on the more frequent motor of actuating ratio, can use the small inductor coil, the overtemperature switch of also available band hand-reset.
Y is a star connection in Fig. 2; △ is the motor winding of delta connection, is found out by this figure, and its star connection and triangle all are adapted to parallel connection, above-mentioned compensation condenser; Find out that in terminal block (1) power supply wiring (3) is an end U who is connected the threephase motor winding
1, V
1, W
1On, because the connection of wiring copper sheet (2); U
1, V
1, W
1, be equal to A, B, C, three terminals; Thereby when reality was implemented, three terminations of above-mentioned capacitor were to be connected on, U
1, V
1, W
1On; The setting of capacitor can be identical with present monopole asynchronous motor, but most preferably, the patent No. is: the setting of ZL992432510 " connection box for motor of containing capacitor ", improve practicality of the present utility model;
Claims (2)
1, a kind of threephase asynchronous with capacitive compensation, it is by three phase windings (a, b, c), terminals (U
1, U
2, V
1, V
2, W
1, W
2), terminal block (1), wiring copper sheet (2) etc. form, it is characterized in that: on three phase windings, be parallel with compensation condenser (C, C1).
2, the threephase asynchronous of band capacitive compensation according to claim 1 is characterized in that: described compensation condenser, leading-out terminal are in series with flow restricter (Ie).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02208080U CN2533608Y (en) | 2002-03-20 | 2002-03-20 | Three-phase asynchronous motor with capacitive compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02208080U CN2533608Y (en) | 2002-03-20 | 2002-03-20 | Three-phase asynchronous motor with capacitive compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2533608Y true CN2533608Y (en) | 2003-01-29 |
Family
ID=33688868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02208080U Expired - Fee Related CN2533608Y (en) | 2002-03-20 | 2002-03-20 | Three-phase asynchronous motor with capacitive compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2533608Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393712A (en) * | 2014-12-11 | 2015-03-04 | 重庆七色实业有限公司 | Capacitive motor |
| CN111585396A (en) * | 2020-06-15 | 2020-08-25 | 山东东普永磁电机有限公司 | Energy-saving motor for direct-drive fan |
-
2002
- 2002-03-20 CN CN02208080U patent/CN2533608Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393712A (en) * | 2014-12-11 | 2015-03-04 | 重庆七色实业有限公司 | Capacitive motor |
| CN111585396A (en) * | 2020-06-15 | 2020-08-25 | 山东东普永磁电机有限公司 | Energy-saving motor for direct-drive fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |