CN101882905A - Wireless remote soft start electrical cabinet - Google Patents
Wireless remote soft start electrical cabinet Download PDFInfo
- Publication number
- CN101882905A CN101882905A CN 201010195508 CN201010195508A CN101882905A CN 101882905 A CN101882905 A CN 101882905A CN 201010195508 CN201010195508 CN 201010195508 CN 201010195508 A CN201010195508 A CN 201010195508A CN 101882905 A CN101882905 A CN 101882905A
- Authority
- CN
- China
- Prior art keywords
- wireless remote
- switch
- motor
- soft
- soft initiator
- 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.)
- Granted
Links
- 239000003999 initiator Substances 0.000 claims description 41
- 238000005070 sampling Methods 0.000 claims description 7
- 230000000052 comparative effect Effects 0.000 claims description 3
- 239000007858 starting material Substances 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Landscapes
- Motor And Converter Starters (AREA)
Abstract
The invention discloses a wireless remote soft start electrical cabinet, comprising a soft starter and a switch control unit, wherein the soft starter is arranged between a power input end and a motor; the switch control unit is connected with the soft starter for controlling the startup and halt of the soft starter; the switch control unit further comprises a normally open starting switch, a normally closed halt switch, a wireless remote normally open contact and a wireless remote normally closed contact; the normally open start switch connected with the soft starter is used for triggering the soft starter to be connected with tri-phase alternating current; the normally closed halt switch connected with the soft starter is used for triggering the soft starter to be disconnected with the tri-phase alternating current; the wireless remote normally open contact connected with the normally open start switch in parallel is used for controlling the motor to start by a wireless remote mode; and the wireless remote normally closed contact connected with the normally closed halt switch in series is used for controlling the motor to halt by a wireless remote mode. The invention has the advantages of convenient operation and low cost.
Description
Technical field
The present invention relates to high-power electrical control field, particularly a kind of wireless remote soft start electrical cabinet.
Background technology
Along with developing by leaps and bounds of national economy, modernization is large-scale constantly to strengthen their production capacity with super-sized enterprises.The motor capacity of main equipment institute adapted also constantly increases, and the motor of several thousand KW, several ten thousand KW is applied in many enterprises.But the clean boot problem that high capacity motor thereupon occurred, simultaneously, get well and the evil idea of its ruuning situation also are the reality that enterprise faces.
For the motor of household electrical appliance, directly starting is the most simple and convenient feasible mode.But along with motor capacity is increasing, directly startup can't adapt to the needs of productivity development, and its drawback has seriously restricted the application of high capacity motor.
The electric factor of high capacity motor itself has determined that its electric current when starting is 4 to 7 times of its rated current, if its place net capacity is big inadequately, starting current can cause that line voltage sharply descends, supply frequency also can change, have a strong impact on the safe operation of other power consumption equipments, even it is stable to cause full electric network to lose, and causes immeasurable loss.
In addition, big like this starting current also can cause damage to motor itself: big electric current produces big heat, and it is aging to add speed motor, reduces motor useful life; Big electric current produces very big electronic stress on the stator coil of motor and rotor, destroy the insulator of winding, causes electrical fault, also can cause very big damage to those with manufacturing machine that motor is associated simultaneously.Simultaneously, the direct startup of motor and to stop all be to handle closing, come and realizing that all be accompanied by superpotential generation in the moment of closing, open of switch, its amplitude is sometimes up to 5 times of rated voltages of appliance switch.High like this voltage will cause very major injury to motor, cause motor short circuit, earth fault etc. to occur.
For solving above-mentioned problems, people regular meeting is provided with soft initiator in electrical control cabinet, slowly increases the starting resistor of motor by soft initiator, reaches the purpose that reduces starting current.
But existing soft start electrical case all is manual operation, can't operate under the situation of long distance.Separate situation for some job sites and control centre, then need to dispose the workman with control centre at the scene simultaneously, and adopt wireless telecommunications system to carry out communication, cause higher manpower and equipment cost.And often noise is bigger owing to the job site, and normal wireless communication is caused obstacle, can badly influence normal industrial production.
Summary of the invention
The purpose of this invention is to provide a kind of wireless remote soft start electrical cabinet, can't remote operated problem to solve existing soft start electrical case.
The present invention proposes a kind of wireless remote soft start electrical cabinet; be used to control the startup and the shutdown of heavy-duty motor, comprise soft initiator and switch control unit, soft initiator is arranged between power input and the motor; be used for increasing lentamente the starting resistor of motor, realize that motor starts lentamente.Switch control unit links to each other with soft initiator, is used to control the start and stop of soft initiator.Wherein, switch control unit comprises further that again normal unlatching moves switch, normally closed shutdown switch, wireless remote control normal opened contact, wireless remote control normally closed contact.The moving switch of normal unlatching links to each other with soft initiator, is used to trigger this soft initiator and three-phase alternating current and conducts.Normally closed shutdown switch links to each other with soft initiator, is used to trigger this soft initiator and three-phase alternating current and disconnects.The wireless remote control normal opened contact moves switch in parallel with normal the unlatching, is used for by wireless remote mode control electric motor starting.The wireless remote control normally closed contact is connected with normally closed shutdown switch, is used for shutting down by wireless remote mode control motor.
Preferably, described wireless remote soft start electrical cabinet also comprises bypass contactor, and it is in parallel with soft initiator, is used for when motor reaches rated speed, replaces soft initiator, and provides operating voltage for motor.
Preferably, moving switch of normal unlatching and normally closed shutdown switch are flip and flop generator.
Preferably, described wireless remote soft start electrical cabinet also comprises receiving element and decoding unit.Receiving element is used for the control signal that the receiving remote remote controller sends.Decoding unit links to each other with receiving element and switch control unit respectively, is used for control signal is decoded, and control signal is transferred to switch control unit.
Preferably, soft initiator further comprises three-phase thyristor, sampling unit and feedback control unit again.Three-phase thyristor is serially connected between three-phase alternating current electrical input and the motor.Sampling unit links to each other with three-phase thyristor, is used to gather the input electric current of three-phase thyristor.Feedback control unit links to each other with three-phase thyristor and sampling unit respectively, is used for sample rate current and the electric motor starting current characteristics curve that sets in advance are compared, and controls the angle of flow of three-phase thyristor according to comparative result.
With respect to prior art, the present invention has the following advantages:
1, the present invention has realized the Long-distance Control of soft starter for motor, for job site and control centre the situation of certain distance is arranged, and only needs the operating personnel just can independent complete operation, has saved human cost.
2, the present invention is owing to only need the people just can complete operation control, thereby need not purchase communication tool, saved equipment cost.
3, the present invention is owing to only need the people just can complete operation control, thereby avoided the influence of noise to conversing between the operator of job site, reduced the probability of misoperation.
Description of drawings
Fig. 1 is a kind of embodiment circuit theory diagrams of wireless remote soft start electrical cabinet of the present invention;
Fig. 2 is the fundamental diagram of switch control unit of the present invention;
Fig. 3 is a kind of example structure figure of soft initiator of the present invention;
Fig. 4 is the change in voltage comparison diagram of direct startup of motor and soft start;
Fig. 5 is a kind of control circuit schematic diagram of wireless remote soft start electrical cabinet of the present invention.
Embodiment
Main thought of the present invention is that radio remote control switch and conventional switch are combined, and the soft start electrical case is transformed, thereby realization is to the remote control of soft start electrical case.
Below in conjunction with accompanying drawing, specify the present invention.See also Fig. 1, it is for a kind of embodiment circuit theory diagrams of wireless remote soft start electrical cabinet of the present invention.This wireless remote soft start electrical cabinet 10 comprises soft initiator 11, bypass contactor 12, switch control unit 13, decoding unit 14 and receiving element 15.Three-phase alternating current electrical input U, V, W are the ends of incoming cables of soft initiator 11, soft initiator 11 output U ', V ', W ' connect motor M, soft initiator 11 is serially connected between three-phase alternating current input and the motor M, is used for the starting resistor of motor M is controlled.Bypass contactor 12 is in parallel with soft initiator 11, when motor M reaches rated revolution, and bypass contactor 12 automatic conductings, and replace soft initiator 11 to provide operating voltage for motor M.
See also Fig. 2, it is the fundamental diagram of switch control unit.Normal moving switch S 1, the normally closed shutdown switch S2 of opening is as the on-site manual console switch, and it is connected to soft initiator by A, B, three lines of C.Be at electric box under " manually " state, " starting " during button, just can trigger moving switch S 1 closure of normal unlatching, and being connected between conducting soft initiator 11 and the power input when operating personnel press; When operating personnel press " stop " during button, just can triggering normally closed shutdown switch S2 and disconnecting, and disconnect being connected between soft initiator 11 and the power input.The moving switch S 1 of normal unlatching, normally closed shutdown switch S2 can be made of flip and flop generator usually.
And wireless remote control normal opened contact S3 is in parallel with the moving switch S 1 of normal unlatching, is used for realizing the remote starter instruction.Wireless remote control normally closed contact S4 connects with normally closed shutdown switch S2, is used for realizing long-range halt instruction.When the operator carries out the remote starter operation by remote controller, receiving element 15 can receive control signal, and through being transferred to wireless remote control normal opened contact S3 after decoding unit 14 decodings, and triggering wireless remote control normal opened contact S3 closure, thereby being connected between conducting soft initiator 11 and the power input, motor M is come into operation.Equally, the operator also can operate by Remote and trigger wireless remote control normally closed contact S4 disconnection, thereby motor M is shut down.Wireless remote control normal opened contact S3 and wireless remote control normally closed contact S4 equally also can be made of flip and flop generator.Because when Remote, the moving switch S 1 of normal unlatching is in off-state all the time, normally closed shutdown switch S2 is in closure state all the time; And when carrying out on-the-spot push-botton operation, wireless remote control normal opened contact S3 is in off-state all the time, and wireless remote control normally closed contact S4 is in closure state all the time, so execute-in-place and remote operation are not disturbed mutually.
For ease of further understanding the present invention, the applicant illustrates the present invention with one of wireless remote soft start electrical cabinet comparatively detailed control circuit, as shown in Figure 5.When the operator controls wireless remote control normal opened contact S3 closure by remote manipulator, perhaps the operator controls when pressing " startup " button and controlling starting switch S1 closure at the scene, connected the coil KM1 loop of dihedral contactor, thereby made the normally open contact KM1 ' closure of dihedral contactor.After the normally open contact KM1 ' closure, just can connect the coil KM2 loop of main contactor, thereby make the normally open contact KM2 ' closure of main contactor.After the normally open contact KM2 ' closure of main contactor, just connected three-phase alternating current, the startup of motor is begun.Disconnect when the operator controls wireless remote control normally closed contact S4 by remote manipulator, perhaps the operator controls at the scene and presses " shutdown " button and control shutdown switch S2 when disconnecting, and has just blocked the input of three-phase alternating current, and then motor is decommissioned.
During starter motor M, the input voltage of thyristor increases gradually, and motor M is quickened gradually, and up to the complete conducting of thyristor, motor M is operated on the mechanical property of rated voltage, realizes smoothly starting, and reduces starting current.When treating that motor M reaches rated speed, start-up course finishes, bypass contactor 12 auto-closings, and replace soft initiator 11 for motor M provides operating voltage, to reduce the thermal losses of thyristor, prolong the useful life of soft initiator 11, improve its operating efficiency, make electrical network avoid harmonic pollution again.See also Fig. 4, it is the change in voltage comparison diagram of direct startup of motor and soft start.Voltage acclivity among the figure in the soft start-up process can be adjusted according to actual needs, and it can be according to the adjusting that is preset in the starting current data in the feedback control unit 33 is realized.
The present invention is by combining traditional soft start electrical case with radio remote control switch, realization is to the long-range soft start control of motor operating state, easy to operate, saved the manpower and materials cost again, be specially adapted to blower fan, water pump, compressor that threephase asynchronous drags, and other needs the place of soft-start by lowering voltage control.
More than disclosed only be several specific embodiment of the present invention, but the present invention is not limited thereto, any those skilled in the art can think variation, all should drop in protection scope of the present invention.
Claims (5)
1. wireless remote soft start electrical cabinet; be used to control the startup and the shutdown of heavy-duty motor; it is characterized in that comprise a soft initiator and a switch control unit, this soft initiator is arranged between power input and the motor; be used for increasing lentamente the starting resistor of motor; realize that motor starts lentamente, this switch control unit links to each other with this soft initiator, is used to control the start and stop of this soft initiator; wherein, this switch control unit further comprises again:
One normal the unlatching moved switch, links to each other with this soft initiator, is used to trigger this soft initiator and three-phase alternating current and conducts;
One normally closed shutdown switch links to each other with this soft initiator, is used to trigger this soft initiator and three-phase alternating current and disconnects;
One wireless remote control normal opened contact moves switch in parallel with this normal unlatching, is used for by wireless remote mode control electric motor starting;
One wireless remote control normally closed contact is connected with this normally closed shutdown switch, is used for shutting down by wireless remote mode control motor.
2. wireless remote soft start electrical cabinet as claimed in claim 1 is characterized in that, it also comprises a bypass contactor, and it is in parallel with this soft initiator, is used for when motor reaches rated speed, replaces this soft initiator, and provides operating voltage for motor.
3. wireless remote soft start electrical cabinet as claimed in claim 1 is characterized in that, this moving switch of normal unlatching and this normally closed shutdown switch are flip and flop generator.
4. wireless remote soft start electrical cabinet as claimed in claim 1 is characterized in that it also comprises:
One receiving element is used for the control signal that the receiving remote remote controller sends;
One decoding unit links to each other with this receiving element and this switch control unit respectively, is used for control signal is decoded, and control signal is transferred to this switch control unit.
5. wireless remote soft start electrical cabinet as claimed in claim 1 is characterized in that, this soft initiator further comprises again:
One three-phase thyristor is serially connected between three-phase alternating current electrical input and the motor;
One sampling unit links to each other with this three-phase thyristor, is used to gather the input electric current of this three-phase thyristor;
One feedback control unit, it links to each other with this three-phase thyristor and this sampling unit respectively, is used for sample rate current and the electric motor starting current characteristics curve that sets in advance are compared, and controls the angle of flow of this three-phase thyristor according to comparative result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101955083A CN101882905B (en) | 2010-06-08 | 2010-06-08 | Wireless remote soft start electrical cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101955083A CN101882905B (en) | 2010-06-08 | 2010-06-08 | Wireless remote soft start electrical cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101882905A true CN101882905A (en) | 2010-11-10 |
| CN101882905B CN101882905B (en) | 2012-07-18 |
Family
ID=43054824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101955083A Expired - Fee Related CN101882905B (en) | 2010-06-08 | 2010-06-08 | Wireless remote soft start electrical cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101882905B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294293A (en) * | 2011-06-13 | 2011-12-28 | 上海市东方海事工程技术有限公司 | Starting control method, system and equipment of coal pulverizer |
| CN102722124A (en) * | 2012-07-02 | 2012-10-10 | 吕清胜 | Intelligent wireless remote control device |
| CN102889649A (en) * | 2011-07-18 | 2013-01-23 | 王康平 | Air-conditioner |
| CN105782102A (en) * | 2016-05-09 | 2016-07-20 | 李堂兴 | Control method for soft starting of fan |
| CN111283327A (en) * | 2020-03-04 | 2020-06-16 | 首钢京唐钢铁联合有限责任公司 | Laser source soft starter control method, control circuit, laser welding machine and medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152344Y (en) * | 1993-02-04 | 1994-01-05 | 罗宇 | Bidirectional speed regulator for winding ac motor |
| CN2728095Y (en) * | 2004-09-15 | 2005-09-21 | 杭州通驰机电有限公司 | A linear motor driven electric curtain machine controller |
| US20090121670A1 (en) * | 2007-11-01 | 2009-05-14 | Martin Brand | Constructive arrangement in a soft-starter |
-
2010
- 2010-06-08 CN CN2010101955083A patent/CN101882905B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152344Y (en) * | 1993-02-04 | 1994-01-05 | 罗宇 | Bidirectional speed regulator for winding ac motor |
| CN2728095Y (en) * | 2004-09-15 | 2005-09-21 | 杭州通驰机电有限公司 | A linear motor driven electric curtain machine controller |
| US20090121670A1 (en) * | 2007-11-01 | 2009-05-14 | Martin Brand | Constructive arrangement in a soft-starter |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294293A (en) * | 2011-06-13 | 2011-12-28 | 上海市东方海事工程技术有限公司 | Starting control method, system and equipment of coal pulverizer |
| CN102889649A (en) * | 2011-07-18 | 2013-01-23 | 王康平 | Air-conditioner |
| CN102889649B (en) * | 2011-07-18 | 2015-05-20 | 王康平 | Air-conditioner |
| CN102722124A (en) * | 2012-07-02 | 2012-10-10 | 吕清胜 | Intelligent wireless remote control device |
| CN105782102A (en) * | 2016-05-09 | 2016-07-20 | 李堂兴 | Control method for soft starting of fan |
| CN111283327A (en) * | 2020-03-04 | 2020-06-16 | 首钢京唐钢铁联合有限责任公司 | Laser source soft starter control method, control circuit, laser welding machine and medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101882905B (en) | 2012-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106602962B (en) | Work converting operation method for synchronously switching based on high-voltage frequency converter electric machine control system | |
| CN101882905B (en) | Wireless remote soft start electrical cabinet | |
| CN201594749U (en) | Alternating current motor synchronization grid-connected switching device | |
| CN205829289U (en) | High pressure undisturbed electric supply installation | |
| CN202285382U (en) | Self-coupling magnetic control reactance soft-starting device for super-power high-voltage motor | |
| CN205407640U (en) | Permanent magnet synchronous motor's device is started in portable frequency conversion | |
| CN203445816U (en) | Two compressor soft start apparatus | |
| CN206060608U (en) | A kind of power control structure of gas turbine energized circuit | |
| CN101527539B (en) | Speed adjustment control system of anti-inversion failure seamless switching motor and control method thereof | |
| CN102946137A (en) | Harmonic wave reactive compensation control method based on high-voltage inverter bypass | |
| CN105119551A (en) | Large power asynchronous motor frequency conversion and soft start-based control device | |
| CN202749184U (en) | Pre-magnetizing device for transformer of high-power wind power complete machine test bench | |
| CN203339999U (en) | Mining flameproof and intrinsically safe type double loop soft starter | |
| CN208299708U (en) | Threephase asynchronous machine starting device | |
| CN200956559Y (en) | Large-sized motor reactive power balance steping-down start device | |
| CN110401216A (en) | A kind of double-fed fan motor unit grid-connecting apparatus | |
| CN207801789U (en) | A kind of mine flameproof and intrinsic safety type combination vacuum communication soft strater | |
| CN2701166Y (en) | Multi-motor centralized variable-frequency soft starting intelligent controller | |
| CN204633646U (en) | A kind of disintegrating machine threephase asynchronous machine soft starting device | |
| CN204706867U (en) | A kind of protection system of mine-used frequency-converter | |
| CN208353256U (en) | Frequency conversion failure cutting frequency control circuit | |
| CN202889265U (en) | Soft starter control system driving three-phase squirrel cage asynchronous motor to operate | |
| CN203482120U (en) | High-power motor starting system | |
| CN203086404U (en) | Rated voltage level intelligence switching apparatus of motor | |
| CN102420564B (en) | Intelligent bypass system for high-voltage frequency converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI TUNNEL ENGINEERING CO., LTD. Free format text: FORMER OWNER: SHANGHAI TUNNEL ENGINEERING CO LTD Effective date: 20150130 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200082 YANGPU, SHANGHAI TO: 200232 XUHUI, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150130 Address after: 200232 Shanghai Wanping Road No. 1099 Patentee after: SHANGHAI TUNNEL ENGINEERING CO., LTD. Address before: 200082 No. 118, Dalian Road, Shanghai, Yangpu District Patentee before: Shanghai Tunnel Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120718 Termination date: 20210608 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |