CN205017233U - Squirrel cage motor reduced voltage starter - Google Patents
Squirrel cage motor reduced voltage starter Download PDFInfo
- Publication number
- CN205017233U CN205017233U CN201520728323.2U CN201520728323U CN205017233U CN 205017233 U CN205017233 U CN 205017233U CN 201520728323 U CN201520728323 U CN 201520728323U CN 205017233 U CN205017233 U CN 205017233U
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- motor
- coil
- iron core
- voltage
- starter
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- 239000007858 starting material Substances 0.000 title claims abstract description 22
- 241000555745 Sciuridae Species 0.000 title abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 9
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 5
- 229920000742 Cotton Polymers 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 125000004122 cyclic group Chemical group 0.000 abstract 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- Motor And Converter Starters (AREA)
Abstract
The utility model provides a power cord series connection is used for the reduced voltage starting motor that squirrel cage motor reduced voltage starter, its coil comprises the cyclic annular iron core of the no air gap that forms with the silicon steel sheet winding, the primary winding of winding on the cyclic annular iron core of no air gap, coil and three -phase AC power supply. Adopt the cyclic annular iron core of no air gap, the coil is made to iron core coiling cotton -covered wire, three group's coils divide A, B, C three -phase, establish ties respectively in the dynamo power supply side, and coil itself has the resistance value of settlement, start to circle through the starting current time line at the motor and understand production voltage, utilize series connection partial pressure principle, reduce the voltage of motor stator with the voltage on the coil to realize the reduced voltage starting motor, reduce motor starting current's about 40%. The fault rate is extremely low, can satisfy crawl, frequent starter motor, this starter has been solved 380-660V squirrel cage three phase ac asynchronous motor and has been started the problem, has replaced the starter of four kinds of prior art, and energy -conservation is showing, and the reliability is high, low in cost, the popularization and application of being convenient for.
Description
Technical field
The utility model relate to a kind of actuating motor starter, particularly relate to a kind of to the mouse cage three-phase AC asynchronous motor of 380 ~ 660V electric pressure carry out reduced voltage starting squirrel-cage motor reduced voltage starter.
Background technology
The reduced-voltage starting method of mouse cage three-phase AC asynchronous motor has four kinds: 1. stator winding series resistor starts; 2, Auto-start relief transformer; 3, star, triangle reduced-voltage starting; 4, soft initiator starts.Prior art regulation requires that starter forbids crawl and Fraquent start operation actuating motor, but industry spot sometimes again must crawl and secondary or repeatedly actuating motor.When 380 ~ 660V mouse cage three-phase AC asynchronous motor of larger capacity starts, in the moment of motor connecting power, starting current is 5 ~ 7 times of Rated motor electric current, impact huge to electrical network, because fault occurs at random, cannot get rid of in advance, cause starter burn-out rate high, useful life is short, has a strong impact on production safety and continuity.And the structure of four of the configuration of prior art kinds of reduced voltage starters is all more complicated, control circui is loaded down with trivial details, maintenance and repair difficulty, and cost compared with high, power consumption is large.
Utility model content
In order to solve the technical problem that prior art exists, the utility model provides a kind of and starts arbitrarily for 380 ~ 660V mouse cage three-phase AC asynchronous motor, fault-free, non-maintaining squirrel-cage motor reduced voltage starter.
Solve the problems of the technologies described above by the following technical solutions:
A kind of squirrel-cage motor reduced voltage starter, comprises coil, it is characterized in that, described coil is by the air-gap-free ring-type iron core be entwined with silicon steel sheet, be wrapped in a winding composition on air-gap-free ring-type iron core, the power line of described coil and three-phase alternating-current supply is connected in series, and is used for motor step-down.
As preferably, described coil arranges three, and three coils are connected in series on three power lines of three-phase alternating-current supply respectively, and three-phase is discrete.
As preferably, the input of three coils is connected with three-phase alternating-current supply respectively, and the output of three coils is connected with the stator of motor respectively.
As preferably, the sectional area of described air-gap-free ring-type iron core mates with power of motor.
Compared with prior art, the utility model adopts air-gap-free ring-type iron core, and coil made by iron core winding cotton covered wire; Three groups of coils divide A, B, C three-phase, are connected on motor power side respectively, and coil itself has the resistance value of setting; At electric motor starting by coil during starting current can produce voltage, utilize series connection voltage divider principle, reduce the voltage of motor stator with the voltage on coil, thus realize reduced voltage starting motor, reduce about 40% of motor starting currents.Its significant effect is: failure rate is extremely low; Crawl, Fraquent start motor can be met; Can start and completely not excise starter, starting process does not have power supply breakpoint, and counterweight load motor starts and is of great importance, and reaches any starting, fault-free, non-maintaining yet.This starter solves 380 ~ 660V mouse cage three-phase AC asynchronous motor starting problem, and instead of the starter of prior art Four types, obvious energy conservation, reliability is high, cheap, is convenient to popularization and application.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model loop A.
Fig. 2 is the structural representation of the utility model coil B.
Fig. 3 is the structural representation of the utility model coil C.
Fig. 4 is the syndeton schematic diagram of loop A, B, C and motor.
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described.
See accompanying drawing 1-4, this squirrel-cage motor reduced voltage starter, provide A, B, C coil only having one-level winding, A, B, C tri-coils are made up of air-gap-free ring-type iron core and winding, its preparation method is: the silicon steel sheet adopting orientation-free cold-rolled high magnetic induction, silicon steel sheet is wound in annular magnet ring and the air-gap-free ring-type iron core of air-gap-free, the sectional area of air-gap-free ring-type iron core becomes to mate with power of motor, and the field demand according to user also can set.Air-gap-free ring-type iron core, after dipping lacquer solidification of heating, iron core forms coil around upper conductor.Three groups of coils are divided into A, B, C three-phase, are connected on motor power side respectively, and in the middle of three power lines of three-phase alternating-current supply, three-phase is discrete.Input A, B, C of three coils are connected with three-phase alternating-current supply respectively, the output terminals A of three coils
', B
', C
'be connected with the stator of motor respectively.Utilizing coil by producing the characteristic of impedance voltage during big current, source nominal voltage being divided into coil voltage and motor stator voltage, thus reducing the voltage on motor stator, realizing the object of reduced voltage starting motor.
Operation principle of the present utility model:
Motor power is connected, and while starting current occurs, because the utility model is series in circuit, the change of impedance to electric current of starter coil has the function of instantaneous suppression, makes starting current momentary spike suppressed, avoids impacting electrical network and transformer; Meanwhile, electric current flows through the existence due to reactance in coil, and produce voltage at the two ends of coil, this voltage is 25 ~ 35% of supply voltage, and therefore, the voltage on motor stator is just reduced to 65 ~ 75%; Square being directly proportional of electric motor starting torque and stator voltage, torque reduces, motor starting currents just corresponding reduction.And then realize impedance reduced voltage starting.
Claims (4)
1. a squirrel-cage motor reduced voltage starter, comprise coil, it is characterized in that, described coil is made up of the air-gap-free ring-type iron core be entwined with silicon steel sheet, the winding be wrapped on air-gap-free ring-type iron core, the power line of described coil and three-phase alternating-current supply is connected in series, and is used for motor step-down.
2. squirrel-cage motor reduced voltage starter according to claim 1, is characterized in that, described coil arranges three, and three coils are connected in series on three power lines of three-phase alternating-current supply respectively, and three-phase is discrete.
3. squirrel-cage motor reduced voltage starter according to claim 2, is characterized in that, the input of three coils is connected with three-phase alternating-current supply respectively, and the output of three coils is connected with the stator of motor respectively.
4. squirrel-cage motor reduced voltage starter according to claim 1, is characterized in that, the sectional area of described air-gap-free ring-type iron core mates with power of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520728323.2U CN205017233U (en) | 2015-09-21 | 2015-09-21 | Squirrel cage motor reduced voltage starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520728323.2U CN205017233U (en) | 2015-09-21 | 2015-09-21 | Squirrel cage motor reduced voltage starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205017233U true CN205017233U (en) | 2016-02-03 |
Family
ID=55215815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520728323.2U Active CN205017233U (en) | 2015-09-21 | 2015-09-21 | Squirrel cage motor reduced voltage starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205017233U (en) |
-
2015
- 2015-09-21 CN CN201520728323.2U patent/CN205017233U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180622 Address after: 063000, 107 floor, 410 Torch Road, Tangshan City hi tech Zone, Hebei. Patentee after: Tangshan City Yi Neng Electric Co., Ltd. Address before: 063000 Hebei Tangshan City hi tech Development Zone Xichang road Tangshan energy Appliance Co., Ltd. Patentee before: Liu Xusheng |