CN203933457U - A kind of adjustable capacitance type autotransformer device for caused by big motor starting up - Google Patents
A kind of adjustable capacitance type autotransformer device for caused by big motor starting up Download PDFInfo
- Publication number
- CN203933457U CN203933457U CN201420314978.0U CN201420314978U CN203933457U CN 203933457 U CN203933457 U CN 203933457U CN 201420314978 U CN201420314978 U CN 201420314978U CN 203933457 U CN203933457 U CN 203933457U
- Authority
- CN
- China
- Prior art keywords
- winding
- adjusting device
- motor
- circuit breaker
- caused
- 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.)
- Expired - Fee Related
Links
Landscapes
- Control Of Electrical Variables (AREA)
Abstract
A kind of adjustable capacitance type autotransformer device for caused by big motor starting up, relate to a kind of soft start of high-power motor device, a kind of adjustable capacitance type autotransformer device for caused by big motor starting up, comprise winding, winding connects voltage bus by first circuit breaker, on winding, be provided with several taps, one of them tap connects motor, between described first circuit breaker and described motor, be provided with second circuit breaker, described winding is also connected with adjusting device, described adjusting device comprises that series connection arranges at least one adjustable capacitor, described adjusting device connects three phase windings by the third described circuit breaker, in described adjusting device, be provided with selector switch.Compared with prior art, during the operation of this device, impulse current is little, low to electrical network harm, long service life, also have small volume, weight is lighter simultaneously, the dismountable feature of adjusting device, make the carrying of this device convenient, the scope of application is more extensive, and bootable power of motor scope is larger.
Description
Technical field
The utility model relates to a kind of soft start of high-power motor device, especially a kind of soft starter device that adopts variable autotransformer, and a kind of method of using the soft start of high-power motor of this autotransformer.
Background technology
The heavy-duty motor of power more than 8000W, it can produce larger impulse current when direct-on-line starting, is generally the 5-8 of rated current Ie doubly.The capacity of motor is larger, and the impulse current producing during starting is just larger to electrical network and load shock thereof.When the capacity of motor is excessive, impulse current even can endanger the safe operation of electrical network; Simultaneously larger owing to playing dynamic stress, make the useful life of load equipment lower.The heavy-duty motor of most works the transformer of employing and is generally the fixing autotransformer of tap, and in whole motor starting process, the tap of autotransformer is immutable.In order to reduce heavy-duty motor impact to electrical network when starting, just must use the autotransformer of low pressure tap, but the autotransformer of low pressure tap can make electric motor starting time lengthening, even makes motor start.Due to the existence of these reasons, limited the application of autotransformer in heavy-duty motor starting.
The applicant had previously applied for patent of invention " variable autotransformer device and starting method for soft start of high-power motor " (application number: 201210194470.7) for this reason, by connecting on winding, one or more adjusting winding that can regulate can start heavy-duty motor the not power-off in the situation that, the secondary current of relatively existing autotransformer, the secondary pulse electric current of this invention is less, conventionally the secondary current of comparable existing autotransformer reduces 20 ~ 30%, impact on electrical network is less, secondary voltage is low, impact on load equipment is also less, extend its useful life.But the complex structure of this variable autotransformer device, especially winding and adjusting winding conjugation, make bulky of the present utility model, and overall weight has reached 7 to 9 tons, mobile very difficult, very inconvenient during use.
Summary of the invention
The utility model is for deficiency of the prior art, a kind of adjustable capacitance type autotransformer device for caused by big motor starting up is provided, during the operation of this device, impulse current is little, low to electrical network harm, long service life, also there is small volume simultaneously, weight is lighter, and the dismountable feature of adjusting device makes the carrying of this device convenient, the scope of application is more extensive, and bootable power of motor scope is larger.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of adjustable capacitance type autotransformer device for caused by big motor starting up, comprise winding, described winding connects voltage bus by first circuit breaker, on described winding, be provided with several taps, tap described in one of them connects motor, between described first circuit breaker and described motor, be provided with second circuit breaker, described winding is also connected with adjusting device, described adjusting device comprises that series connection arranges at least one adjustable capacitor, described adjusting device connects three phase windings by the third described circuit breaker, in described adjusting device, be provided with selector switch.
In technique scheme, preferred, in described adjusting device, be also provided with first link and second link, the winding described in the described dismountable connection of first link, three phase windings described in the described dismountable connection of second link.
In technique scheme, preferred, described selector switch is arranged in described adjusting device adjustable capacitor two ends described in each.
Arrange like this, feature of the present utility model is that fixedly winding and the adjusting device series connection in autotransformer device arranges, adjusting device comprises the capacitor that at least one is adjustable, adjustable capacitor and winding do not need to be arranged on same iron yoke, adjusting device can be dismantled with respect to autotransformer device, reduce greatly volume and the weight of whole autotransformer device, alleviated greatly the difficulty of transportation simultaneously.Moreover, with respect to need to the adjusting winding of winding conjugation, adjusting device of the present utility model is that several adjustable capacitor's seriess form, the selection of the scope of adjusting is more flexible than the regulating winding of winding type, adjustable scope is also more extensive.
Compared with prior art, the beneficial effects of the utility model are: during the operation of this device, impulse current is little, low to electrical network harm, long service life also has small volume simultaneously, and weight is lighter, the dismountable feature of adjusting device, make the carrying of this device convenient, the scope of application is more extensive, and bootable power of motor scope is larger.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1, a kind of adjustable capacitance type autotransformer device for caused by big motor starting up, comprises winding R, winding R connects voltage bus by first circuit breaker Q F1, on winding R, be provided with three taps, three taps are respectively first plugs 1, second plug 2 and the third plug 3.One of them tap connects motor M, voltage bus connects motor M by second circuit breaker Q F2, and second circuit breaker Q F2 is between first circuit breaker Q F1 and motor M, and winding R is also connected with adjusting device, adjusting device comprises an adjustable capacitor C, and capacitor C two ends are provided with selector switch KF.Adjusting device connects three phase winding Z by the third circuit breaker Q F3, is also provided with first link X and second link Y in adjusting device, the dismountable connection winding of first link X R, the dismountable connection three phase winding Z of second link Y.
During use, first, according to power selection access first plug 1, second plug 2 or third plug 3 of motor M, the reactance value between each plug differs 5%.The selector switch KF that closes again, allows adjustable capacitor C short circuit, and now autotransformer is low no-load voltage ratio, and secondary voltage is low, and starting current is little, and primary current is less.Then the third circuit breaker Q F3 is closed, three phase winding Z of autotransformer are joined, the first of closing immediately circuit breaker Q F1, make the voltage bus power transmission can be to autotransformer, now autotransformer once switches on power, motor M starts starting under low-voltage, and system flows down starting in small electric, to electrical network, impacts less.Then detect again rotating speed or the electric current of motor M, when through after a period of time, during the first rotating speed that motor M is accelerated to reach default, selector switch KF is opened, allow in adjustable capacitor C line attachment, then regulate the current potential of adjustable capacitor C, change the inductance of adjustable capacitor C.Wherein the first rotating speed is to determine according to the starting curve feature of motor, and conventionally, the first rotating speed is 50 ~ 90% of the rotating speed that moves under motor M total head; When adjustable capacitor C is a plurality of series connection, can open as required the number of selector switch KF.By regulating adjustable capacitor C to change autotransformer no-load voltage ratio, now autotransformer is hypermutation ratio, and secondary voltage improves, motor M electric current increases, adjustable capacitor C, except regulating secondary voltage, provides reactive power compensation simultaneously, makes primary current less.
Again through after a period of time, motor M accelerates to reach the second default rotating speed, and conventionally, the second rotating speed is 90 ~ 96% of the rotating speed that moves under motor M total head; The third circuit breaker Q F3 is opened, and now the winding R of autotransformer is serially connected in the loop of motor M stator and voltage bus, and autotransformer is reactor running status.This transition stage is lasted 1 ~ 10s, and after this starting current has been down to and has been approached rated current.Second circuit breaker Q F2 is closed, and motor M switches under full voltage and moves, and autotransformer is out of service, and starting completes.
The utility model device can also make the adjusting device can be separated with three phase winding Z with winding R by first link X and second link Y, make this install very convenient transportation, volume weight also greatly reduces, the adjusting device adjustable capacitor C of any amount that can connect simultaneously, the scope of application of this device is greatly improved, is applicable to start the motor of high power and ultra high power.
Claims (3)
1. the adjustable capacitance type autotransformer device for caused by big motor starting up, comprise winding (R), described winding (R) connects voltage bus by first circuit breaker (QF1), on described winding (QF1), be provided with several taps, tap described in one of them connects motor (M), between described first circuit breaker (QF1) and described motor (M), be provided with second circuit breaker (QF2), it is characterized in that, described winding (R) is also connected with adjusting device, described adjusting device comprises that series connection arranges at least one adjustable capacitor (C), described adjusting device connects three phase windings (Z) by the third circuit breaker (QF3), in described adjusting device, be provided with selector switch (FK).
2. a kind of adjustable capacitance type autotransformer device for caused by big motor starting up according to claim 1, it is characterized in that, in described adjusting device, be also provided with first link (X) and second link (Y), winding (R) described in the described dismountable connection of first link (X), three phase windings (Z) described in the described dismountable connection of second link (Y).
3. a kind of adjustable capacitance type autotransformer device for caused by big motor starting up according to claim 2, is characterized in that, described selector switch (FK) is arranged in described adjusting device adjustable capacitor (C) two ends described in each.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314978.0U CN203933457U (en) | 2014-06-13 | 2014-06-13 | A kind of adjustable capacitance type autotransformer device for caused by big motor starting up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314978.0U CN203933457U (en) | 2014-06-13 | 2014-06-13 | A kind of adjustable capacitance type autotransformer device for caused by big motor starting up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203933457U true CN203933457U (en) | 2014-11-05 |
Family
ID=51829209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420314978.0U Expired - Fee Related CN203933457U (en) | 2014-06-13 | 2014-06-13 | A kind of adjustable capacitance type autotransformer device for caused by big motor starting up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203933457U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009676A (en) * | 2014-06-13 | 2014-08-27 | 宁波宁变电力科技股份有限公司 | Adjustable capacitance type autotransformer device for large-motor starting |
-
2014
- 2014-06-13 CN CN201420314978.0U patent/CN203933457U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009676A (en) * | 2014-06-13 | 2014-08-27 | 宁波宁变电力科技股份有限公司 | Adjustable capacitance type autotransformer device for large-motor starting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105897033B (en) | A kind of capacitance multiplexing type inductive energy storage type pulse power for Electromagnetic Launching | |
| CN102904264B (en) | A kind of High Voltage and Passive Automatic Compensation Device | |
| CN105932898B (en) | A kind of hybrid inductive energy storage type pulse power of capacitance for Electromagnetic Launching | |
| CN103532221B (en) | The circuit backup power automatic switching implementation method of a kind of self adaptation 330kV bus arrangement and operational mode | |
| CN203933457U (en) | A kind of adjustable capacitance type autotransformer device for caused by big motor starting up | |
| CN104617807A (en) | Inductive energy storing type pulse power supply for electromagnetic emission | |
| CN110880781B (en) | Charging method of multi-terminal hybrid direct-current power transmission system | |
| CN204189595U (en) | Loaded capacity-regulated transformer | |
| CN102694487A (en) | Adjustable self-coupling transformer device and starting method for soft starting of high-power motor | |
| CN101640120A (en) | Transformer changing from three phases to single phase | |
| CN104009676A (en) | Adjustable capacitance type autotransformer device for large-motor starting | |
| CN202617050U (en) | High-power motor soft-starting adjustable autotransformer device | |
| CN201498348U (en) | Triphase-to-single-phase transformer | |
| CN207021119U (en) | Have and carry automatic capacity regulating voltage adjusting power transformer | |
| CN202906805U (en) | Special transformer compensating soft start device for large power cage type motor | |
| CN205829468U (en) | A kind of automatic voltage regulation transformator | |
| CN203775089U (en) | Main loop used for self-excited voltage-decreasing compensation soft start device of high-voltage squirrel-cage motor | |
| CN202906804U (en) | Self-excited compensation soft start device for large power cage type motor | |
| CN201797318U (en) | Reactance-adjustable reactive power compensator | |
| CN205304650U (en) | Motor high -voltage frequency converters soft start no. 1 drags two devices | |
| CN203301403U (en) | Main loop used for high-power high-voltage squirrel-cage motor self-excited voltage-decreasing compensation soft start device | |
| CN102983795B (en) | TBEA compensation soft starting device used for large power cage type motor | |
| CN206921667U (en) | A kind of double power network power transformers | |
| CN103427414A (en) | Parameter design method of symmetrical controllable phase shifter | |
| CN204012851U (en) | A kind of lithium battery pack equalizing circuit of composite type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20170613 |