CN2681448Y - A chopped mode soft starter for high-voltage motor - Google Patents
A chopped mode soft starter for high-voltage motor Download PDFInfo
- Publication number
- CN2681448Y CN2681448Y CN 200420032802 CN200420032802U CN2681448Y CN 2681448 Y CN2681448 Y CN 2681448Y CN 200420032802 CN200420032802 CN 200420032802 CN 200420032802 U CN200420032802 U CN 200420032802U CN 2681448 Y CN2681448 Y CN 2681448Y
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- China
- Prior art keywords
- motor
- utility
- soft starter
- model
- power switch
- 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
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- Motor And Converter Starters (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The utility model provides a chopper type soft starter for high-voltage motor belonging to the technical field of motor control, which is composed of a three-phase rectifying bridge and a bridge arm of tandem electronic power switch connected with the direct-current end of the three-phase rectifying bridge in parallel. The soft starter of the utility model employs the power switch in series connection with the bridge arm to form a switching circuit, compared with the existing like products, the advantages is: good resistance to pressure, reliable operation, high open and closed frequency, easy fine control, a little harmonic component and small contamination on electric network. The utility model can be applied to squirrel-cage asynchronous motor, synchronous motor as well as coiling-rotator asynchronous motor.
Description
Technical field
The utility model relates to a kind of soft initiator that improves the electric motor starting characteristic.Belong to the electric machines control technology field.
Background technology
Motor is when starting, and its starting current often reaches 4～7 times of rated operational current, and electrical network is impacted greatly, and soft initiator therefore commonly used comes starter motor.The soft initiator that present motor uses is to adopt the soft initiator that constitutes as master element with controllable silicon mostly.Shortcoming is that the silicon controlled harmonic content is big, and is big to the pollution of electrical network; Poor reliability when connecting use for satisfying high pressure.
Summary of the invention
The purpose of this utility model is the above-mentioned shortcoming that overcomes prior art, for high-voltage motor provides a kind of reliability height, and the chopped mode soft initiator little to electric network pollution.
Realize the chopped mode soft initiator that is used for high-voltage motor of the utility model purpose, the tandem electronic power switch brachium pontis that is connected in parallel by the dc terminal of a three-phase commutation bridge and and this three-phase commutation bridge is constituted.Its operation principle is by three-phase commutation bridge the three-phase alternating current loop have been become a DC loop, controls the break-make of electronic switch brachium pontis, has just controlled the break-make in three-phase alternating current loop.When the electronic switch brachium pontis disconnected, the three-phase alternating current loop also disconnected, and when the electronic switch brachium pontis was opened, the three-phase alternating current loop was also connected.The duty ratio that control electronic switch brachium pontis is opened and disconnected is promptly carried out copped wave control to DC loop, has then controlled the average current in three-phase alternating current loop, is the starting current that can be regulated and control and realize soft starter for motor thereby make the starting current that offers motor.
This soft initiator adopts power switch series connection brachium pontis to constitute switching circuit, and advantage compared with the aforementioned existing similar products is that resistance to pressure is good, reliable operation; Open, the frequency height of pass is easy to realize meticulous control; The harmonic wave composition is few, and is little to the pollution of electrical network.Promptly can be used for squirrel cage asynchronous motor, synchronous machine, also can be used for wound rotor formula asynchronous machine.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the structural representation of tandem electronic power switch brachium pontis
Embodiment
As shown in Figure 1, a kind of chopped mode soft initiator that is used for high-voltage motor, the tandem electronic power switch brachium pontis 2 that is connected in parallel by the dc terminal of a three-phase commutation bridge 1 and and this three-phase commutation bridge is constituted.It is the patented product of ZL00223733.4 that tandem electronic power switch brachium pontis 2 adopts the patent No. as shown in Figure 2.3 is squirrel cage asynchronous motor among the figure.
Claims (1)
1, a kind of chopped mode soft initiator that is used for high-voltage motor is characterized in that described chopped mode soft initiator is made of the tandem electronic power switch brachium pontis that the dc terminal of a three-phase commutation bridge and and this three-phase commutation bridge is connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032802 CN2681448Y (en) | 2004-02-12 | 2004-02-12 | A chopped mode soft starter for high-voltage motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032802 CN2681448Y (en) | 2004-02-12 | 2004-02-12 | A chopped mode soft starter for high-voltage motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2681448Y true CN2681448Y (en) | 2005-02-23 |
Family
ID=34607344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420032802 Expired - Fee Related CN2681448Y (en) | 2004-02-12 | 2004-02-12 | A chopped mode soft starter for high-voltage motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2681448Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916626A (en) * | 2012-11-06 | 2013-02-06 | 陕西科技大学 | Three-phase chopper control soft starter |
| CN102916625A (en) * | 2012-11-06 | 2013-02-06 | 陕西科技大学 | Complementary-pulse two-phase voltage regulation soft starter |
| CN102946217A (en) * | 2012-11-06 | 2013-02-27 | 陕西科技大学 | Two-phase chopper control soft starter |
| CN101404472B (en) * | 2007-06-25 | 2013-07-10 | 刘群 | Low/medium voltage and high voltage motor soft starter composed by three-phase commutation bridge |
-
2004
- 2004-02-12 CN CN 200420032802 patent/CN2681448Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404472B (en) * | 2007-06-25 | 2013-07-10 | 刘群 | Low/medium voltage and high voltage motor soft starter composed by three-phase commutation bridge |
| CN102916626A (en) * | 2012-11-06 | 2013-02-06 | 陕西科技大学 | Three-phase chopper control soft starter |
| CN102916625A (en) * | 2012-11-06 | 2013-02-06 | 陕西科技大学 | Complementary-pulse two-phase voltage regulation soft starter |
| CN102946217A (en) * | 2012-11-06 | 2013-02-27 | 陕西科技大学 | Two-phase chopper control soft starter |
| CN102916625B (en) * | 2012-11-06 | 2015-11-04 | 陕西科技大学 | Complementary pulse two-phase soft starter |
| CN102946217B (en) * | 2012-11-06 | 2016-03-23 | 陕西科技大学 | Two-phase chopper control soft starter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Effective date of registration: 20070724 Pledge (preservation): Pledge |
|
| DD01 | Delivery of document by public notice |
Addressee: Wu Jialin Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050223 Termination date: 20120212 |