CN104320022A - Internal bypass type soft starter - Google Patents
Internal bypass type soft starter Download PDFInfo
- Publication number
- CN104320022A CN104320022A CN201410577572.6A CN201410577572A CN104320022A CN 104320022 A CN104320022 A CN 104320022A CN 201410577572 A CN201410577572 A CN 201410577572A CN 104320022 A CN104320022 A CN 104320022A
- Authority
- CN
- China
- Prior art keywords
- soft starter
- circuit board
- silicon controlled
- internal bypass
- bypass type
- 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
- 239000007858 starting material Substances 0.000 title claims abstract description 45
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 40
- 239000010703 silicon Substances 0.000 claims abstract description 40
- 238000010891 electric arc Methods 0.000 abstract description 2
- 230000008033 biological extinction Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
- H02P1/28—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor by progressive increase of voltage applied to primary circuit of motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/02—Details of starting control
- H02P1/022—Security devices, e.g. correct phase sequencing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Security & Cryptography (AREA)
- Motor And Converter Starters (AREA)
Abstract
The invention discloses an internal bypass type soft starter. The internal bypass type soft starter comprises a power source, a soft starter and a motor, wherein the power source is connected with the soft starter, the soft starter is connected with the motor, the soft starter comprises a main loop, a current transformer and a circuit board, the current transformer is arranged on the main loop and connected with the circuit board, the circuit board is connected with a silicon controlled module in the main loop in drive mode, the main loop is formed by connecting the internal bypass contactor with the silicon controlled module in parallel, the silicon controlled module comprises a first silicon controlled rectifier and a second silicon controlled rectifier, and the first silicon controlled rectifier and the second silicon controlled rectifier are connected in parallel. By adopting the technical scheme, the internal bypass type soft starter is convenient to use, and can not cause arc discharge. The internal bypass contactor is integrated into the internal bypass type soft starter, and therefore the number of components is decreased, the size of the internal bypass type soft starter is reduced, and the internal bypass type soft starter is convenient and practical, and greatly reduces costs. The internal bypass type soft starter guarantees complete achievement of electronic arc extinction by using the silicon controlled module, the circuit board and the internal bypass contactor cooperatively. The internal bypass type soft starter is safe and reliable in overall work, and can stably run for a long time.
Description
Technical field
The present invention relates to soft starter field, particularly a kind of built in bypass type soft starter.
Background technology
In eighties of last century eighties, the ideal product that soft starter has become motor starting to control, has filled up star-delta starter and the wide gap of frequency converter between practical function and price.Its course of work is all adopt thyristor to start additional contactor bypass.Effectively can control motor voltage during starting, make it raise gradually in starting process, very naturally control starting current, make machinery and electric stress be down to minimum.Therefore soft starter is commercially used widely.But bypass contactor often all will configure in addition, and disjunction can produce arcing when high-voltage large current.
Electric arc is a kind of gas discharge phenomenon, the moment spark that electric current is produced by some dielectric (such as air).Rated short circuit drop-out current refers to the maximum capacity of switch limit turn-off current, ward off as switch shows rated short circuit drop-out current 20KA, represent that the short circuit tripping operation contact arc-extinguishing thermal element action in 20KA etc. is effective, exceed the tripping operation of this limit, the action of joint arc extinguishing thermal element does not ensure, can produce arcing.And arcing often causes the one of the main reasons of device damage.
Due to the high voltage and current in the soft starter course of work, arcing will certainly be produced.Therefore, inevitable meeting produces harmful effect to equipment.
Existing bypass runs soft starter and just installs a set of A.C. contactor in parallel with thyristor additional on the side of soft starter, to complete the bypass after starting.Arc-suppression function only relies on the arc extinguishing grid of A.C. contactor itself to realize, and has significant limitation.Moreover this external bypass soft starter needs user to configure the bypass contactor of certain specification and the peripheral casing of necessity in addition and circuit ability is normal works; inconvenience very; user cost is increased; and when bad environments or supply voltage on the low side often can damage, affect normal production operation.
Summary of the invention
In order to solve the problem, the invention provides a kind of easy to use, built in bypass type soft starter of not producing arcing.
A kind of built in bypass type soft starter in the present invention, comprise power supply, soft starter and motor, described power supply connects soft starter, described soft starter connects motor, described soft starter comprises major loop, current transformer and circuit board, described current transformer to be located on major loop and to be connected with circuit board, and described circuit board drives with silicon controlled component in major loop and is connected, and described major loop is formed by built in bypass contactor is in parallel with silicon controlled component;
Silicon controlled component comprises the first thyristor and the second thyristor, described first thyristor and the parallel connection of the second thyristor.
In such scheme, also comprise base shell, be provided with radiator in described base shell, described radiator is provided with transformer and major loop, and described major loop is provided with current transformer.Current transformer is used for detecting size of current, and silicon controlled component can be controlled by the triggering signal that circuit board sends, and changes the angle of flow of thyristor thus changes the size flowing through thyristor current flows.
In such scheme, also comprise circuit board case, described circuit board case and base shell fasten.Circuit board case and base shell can well protect inner structure not to be damaged.
In such scheme, described circuit board case is provided with display panel, and described display panel is connected with main circuit board.Display panel is used for showing the required data understood.
In such scheme, described base shell both sides are provided with output guard cover.Protective cover better protects inner various structures.
Advantage of the present invention and beneficial effect are: the invention provides a kind of easy to use, built in bypass type soft starter of not producing arcing.Contactor is integrated in soft starter, decreases parts, reduce volume, convenient and practical and greatly reduce cost.By silicon controlled component and circuit board and built in bypass contactor with the use of, ensure that and realize electronic arc eliminating completely.Whole equipment is safe and reliable, and can steady in a long-termly run.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is structural representation of the present invention.
In figure: 1, power supply 2, soft initiator 3, motor 4, current transformer
5, circuit board 6, major loop 7, first thyristor
8, the second thyristor 9, base shell 10, radiator 11, transformer
12, silicon controlled component 13, copper bar 14, built in bypass contactor
15, circuit board case 16, display panel 17, output guard cover
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
As shown in Figure 1, the present invention is a kind of built in bypass type soft starter, comprise power supply 1, soft starter 2 and motor 3, power supply 1 connects soft starter 2, soft starter 2 connects motor 3, and soft starter 2 comprises major loop 6, current transformer 4 and circuit board 5, and current transformer 4 to be located on major loop 6 and to be connected with circuit board 4, circuit board 4 drives with the silicon controlled component 12 in major loop 6 and is connected, and major loop 6 is formed by built in bypass contactor 14 is in parallel with silicon controlled component 12; It is in parallel that silicon controlled component 12 comprises the first thyristor 7 and the second thyristor 8, first thyristor 7 and the second thyristor 8.
As shown in Figure 2, also comprise base shell 9, radiator 10 is provided with in base shell 9, radiator 10 is provided with transformer 11 and silicon controlled component 12, transformer 11 connects power supply 1 and circuit board 5, current transformer 4 to be located on copper bar 13 and to be connected with circuit board 5, and silicon controlled component 12 is connected with circuit board 5.Current transformer 4 is used for detecting size of current, objectively can demonstrate current value on the one hand, can implement protection on the other hand to whole circuit; Silicon controlled component 12 can accept the triggering signal that circuit board 5 produces, and changes the angle of flow of silicon controlled component 12, and changes the size flowing through silicon controlled component 12 electric current.
Also comprise circuit board case 15, circuit board case 15 and base shell 9 fasten.Circuit board case 15 is provided with display panel 16, and display panel 16 is connected with circuit board 5.Base shell 9 both sides are provided with output guard cover 17.
After power supply 1 is connected, power supply conducts silicon controlled component 12 by copper bar 13.Power supply 1 is added to power supply on circuit board 5 by transformer 11, and circuit board 5 is started working.Display floater 16 shows current state.After pressing the initiate key on display floater 16, input starting command, circuit board 5 sends drive singal and is added on silicon controlled component 12, and silicon controlled component 12 is controlled open-minded.Power supply 1 is loaded on motor 3 by silicon controlled component 12, makes motor 3 start to start.Circuit board 5 is automatically by the angle of flow of drive signal waveform adjustment silicon controlled component 12, and the electric current and the voltage that make to flow through silicon controlled component 12 slowly rise, thus make motor 3 smooth start, until started rear motor 3 to start full speed running.Now circuit board 5 sends by-passing signal, makes built in bypass contactor 14 adhesive, and power supply is directly loaded on motor 3 by built in bypass contactor 14, continues to maintain motor 3 full speed running, thus makes motor 3 enter normal operating conditions.Then stop the triggering signal of silicon controlled component 12, make silicon controlled component 12 turn off thus depart from electric motor loop.When needs are shut down, circuit board 5 first sends triggering signal and opens silicon controlled component 12, makes silicon controlled component 12 open thus add electric motor loop.And then turn off by-passing signal, built in bypass contactor 14 is disconnected, and then passes through the triggering signal of adjustment silicon controlled component 12 thus silicon controlled component 12 is turned off gradually.
In this process, built in bypass contactor 14 disconnect moment due to silicon controlled component 12 open-minded, power supply 1 makes motor 3 remain in operation by silicon controlled component 12, so can not arcing be produced, and the use of silicon controlled component 12 progressively can change the size of electric current, instead of make suddenly electric current increase or reduce, avoid the generation of electronics arcing from source, achieve electronic arc eliminating from root.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a built in bypass type soft starter, comprise power supply, soft starter and motor, described power supply connects soft starter, described soft starter connects motor, it is characterized in that, described soft starter comprises major loop, current transformer and circuit board, and described current transformer to be located on major loop and to be connected with circuit board, described circuit board drives with silicon controlled component in major loop and is connected, and described major loop is formed by built in bypass contactor is in parallel with silicon controlled component;
Silicon controlled component comprises the first thyristor and the second thyristor, described first thyristor and the parallel connection of the second thyristor.
2. a kind of built in bypass type soft starter according to claim 1, it is characterized in that, also comprise base shell, be provided with radiator in described base shell, described radiator is provided with transformer and major loop, and described major loop is provided with current transformer.
3. a kind of built in bypass type soft starter according to claim 2, it is characterized in that, also comprise circuit board case, described circuit board case and base shell fasten.
4. a kind of built in bypass type soft starter according to claim 3, it is characterized in that, described circuit board case is provided with display panel, and described display panel is connected with main circuit board.
5. a kind of built in bypass type soft starter according to claim 4, it is characterized in that, described base shell both sides are provided with output guard cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410577572.6A CN104320022A (en) | 2014-10-24 | 2014-10-24 | Internal bypass type soft starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410577572.6A CN104320022A (en) | 2014-10-24 | 2014-10-24 | Internal bypass type soft starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104320022A true CN104320022A (en) | 2015-01-28 |
Family
ID=52375219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410577572.6A Pending CN104320022A (en) | 2014-10-24 | 2014-10-24 | Internal bypass type soft starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104320022A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2545488A (en) * | 2015-12-18 | 2017-06-21 | Fairford Electronics Ltd | Parallel use of soft starters |
| CN107124123A (en) * | 2016-11-09 | 2017-09-01 | 浙江万工电气有限公司 | A kind of soft initiator for carrying rotating |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030017451A (en) * | 2002-12-05 | 2003-03-03 | 박운양 | Start circuit for induction motor using soft starter |
| CN2765386Y (en) * | 2005-01-24 | 2006-03-15 | 天津市诺尔电气有限公司 | Built-in bypass type soft starting device for motor |
| CN2765384Y (en) * | 2005-01-24 | 2006-03-15 | 天津市诺尔电气有限公司 | Built-in bypass type soft starting device for motor |
| CN2922273Y (en) * | 2006-07-19 | 2007-07-11 | 上海九康电气有限公司 | High power built-in bypass electric machine soft starting device |
| CN203445814U (en) * | 2013-07-22 | 2014-02-19 | 索肯和平(上海)电气有限公司 | Soft starter with built-in by-pass |
| CN204216801U (en) * | 2014-10-24 | 2015-03-18 | 上海数恩电气科技有限公司 | A kind of built in bypass type soft starter |
-
2014
- 2014-10-24 CN CN201410577572.6A patent/CN104320022A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030017451A (en) * | 2002-12-05 | 2003-03-03 | 박운양 | Start circuit for induction motor using soft starter |
| CN2765386Y (en) * | 2005-01-24 | 2006-03-15 | 天津市诺尔电气有限公司 | Built-in bypass type soft starting device for motor |
| CN2765384Y (en) * | 2005-01-24 | 2006-03-15 | 天津市诺尔电气有限公司 | Built-in bypass type soft starting device for motor |
| CN2922273Y (en) * | 2006-07-19 | 2007-07-11 | 上海九康电气有限公司 | High power built-in bypass electric machine soft starting device |
| CN203445814U (en) * | 2013-07-22 | 2014-02-19 | 索肯和平(上海)电气有限公司 | Soft starter with built-in by-pass |
| CN204216801U (en) * | 2014-10-24 | 2015-03-18 | 上海数恩电气科技有限公司 | A kind of built in bypass type soft starter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2545488A (en) * | 2015-12-18 | 2017-06-21 | Fairford Electronics Ltd | Parallel use of soft starters |
| GB2545488B (en) * | 2015-12-18 | 2019-08-28 | Fairford Electronics Ltd | Parallel use of soft starters |
| CN107124123A (en) * | 2016-11-09 | 2017-09-01 | 浙江万工电气有限公司 | A kind of soft initiator for carrying rotating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150128 |
|
| RJ01 | Rejection of invention patent application after publication |