CN104638987A - Method for controlling soft starting of multiple-driven-by-two redundant motor - Google Patents
Method for controlling soft starting of multiple-driven-by-two redundant motor Download PDFInfo
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- CN104638987A CN104638987A CN201510072877.6A CN201510072877A CN104638987A CN 104638987 A CN104638987 A CN 104638987A CN 201510072877 A CN201510072877 A CN 201510072877A CN 104638987 A CN104638987 A CN 104638987A
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- starter
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- controller
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- 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
- H02P1/54—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting two or more dynamo-electric motors
- H02P1/58—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting two or more dynamo-electric motors sequentially
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a method for controlling soft starting of a multiple-driven-by-two redundant motor. The method is characterized in that one soft starter is randomly selected from two soft starters and is used as a main starter; the other soft starter is used as a sub starter; after a first start instrument is received, a controller firstly switches on a first soft start contactor of a first motor, and switches off a first bypass contactor of the first motor; the controller then drives the main starter to begin working, and enables the voltage of a soft start power supply network to gradually increase, so that the first motor gradually starts; when the voltage of the soft start power supply network reaches a rated voltage, the first motor works normally, and the controller switches off the soft start contactor and switches on the bypass contactor at the moment; the soft starting process of the first motor is finished; the controller drives the main starter to stop working, and enables the main starter to enter into a heat radiation state; the steps are repeatedly performed for sequentially starting the residual motors. The method for controlling the soft starting of the multiple-driven-by-two redundant motor has the advantages that the reliability of a system is improved, the service life of equipment is prolonged, the start process is accelerated, and the purposes of improving efficiency and reducing consumption are achieved.
Description
Technical field
The invention belongs to motor control technologies field, be specifically related to the control method that a kind of two drag many redundance types flexible starter for electric motor.
Background technology
Along with the development of science, enterprise is more and more higher for the requirement of production cost and production safety, adopts soft starter one to drag the mode of many actuating motors to replace star triangular decompression starter and auto-induction voltage-reduced starting.But one drags many actuating motors, once soft starter breaks down, the multiple motors so in whole production line all cannot start, and whole production line may be made time serious normally to run.And the mode adopting two to drag many redundance types Hot Spare starter motor, although can the reliable and stable operation of elevator system greatly, but this is needs one, and excellent control mode controls two soft starters, make it under the working method of optimum, reach and improve soft starter functional reliability, increase service life of equipment, reduce the requirement of system failure rate, start quickly process, reduce the requirement of energy loss.
Summary of the invention
In view of this, the main purpose of the present invention control method that is to provide a kind of two to drag many redundance types flexible starter for electric motor.
For achieving the above object, technical scheme of the present invention is achieved in that
The control method that the embodiment of the present invention provides a kind of two to drag many redundance types flexible starter for electric motor, the method is: in two soft starters, Stochastic choice soft starter is as main starter, another soft starter is as from starter, after receiving first enabled instruction, first institute's controller softly opens that contactor is closed, the first bypass contactor disconnects by first of the first motor, then controller drives main starter to start working, make the soft voltage opened on electric power network increase gradually, described first motor starts gradually; After the soft voltage opening electric power network reaches rated voltage, described first electric motor normal working, now described controller disconnection is soft opens contactor, closed bypass contactor, and the soft start-up process of described first motor completes, controller drives main starter to quit work, and enters radiating state; Repeat above-mentioned steps and open residual electricity motivation successively.
In such scheme, describedly also comprise detection two soft starters whether fault before receive first enabled instruction, when main starter breaks down, by main starter with replace from starter; When the equal fault of two soft starters, start and stop.
In such scheme, in described two soft starters, the lead-in wire terminal of the first soft starter, the second soft starter is connected with the first fast acting fuse FU1, the second fast acting fuse FU2 respectively, described first fast acting fuse FU1, the second fast acting fuse FU2 are connected with normal power supplies network through the first circuit breaker Q F1, the second circuit breaker Q F2 respectively, form softly to open electric power network after the leading-out terminal parallel connection of described first soft starter, the second soft starter; The described soft electric power network that opens connects several motor, each motor and soft open all to be connected with between electric power network softly open contactor KM, described normal power supplies network is connected to described each motor through bypass contactor and softly opens between contactor KM; Described first soft starter, the second soft starter, eachly softly open contactor KM, each bypass contactor is connected with controller respectively.
In such scheme, described each motor and soft opening between contactor KM are also connected with thermal relay FR.
The control method that the embodiment of the present invention also provides a kind of two to drag many redundance types flexible starter for electric motor, the method is: in two soft starters, Stochastic choice soft starter is as main starter, another soft starter is as from starter, after receiving first enabled instruction, first institute's controller softly opens that contactor is closed, the first bypass contactor disconnects by first of the first motor, then controller drives main starter to start working, make the soft voltage opened on electric power network increase gradually, described first motor starts gradually; After the soft voltage opening electric power network reaches rated voltage, described first electric motor normal working, now described controller disconnection is soft opens contactor, closed bypass contactor, and the soft start-up process of described first motor completes, controller drives main starter to quit work, and enters radiating state; When each start next motor before, main starter and replacing from starter, the main starter after replacement opens residual electricity motivation successively according to above-mentioned steps again.
In such scheme, describedly also comprise detection two soft starters whether fault before receive first enabled instruction, when main starter breaks down, by main starter with replace from starter; When the equal fault of two soft starters, start and stop.
In such scheme, in described two soft starters, the lead-in wire terminal of the first soft starter, the second soft starter is connected with the first fast acting fuse FU1, the second fast acting fuse FU2 respectively, described first fast acting fuse FU1, the second fast acting fuse FU2 are connected with normal power supplies network through the first circuit breaker Q F1, the second circuit breaker Q F2 respectively, form softly to open electric power network after the leading-out terminal parallel connection of described first soft starter, the second soft starter; The described soft electric power network that opens connects several motor, each motor and soft open all to be connected with between electric power network softly open contactor KM, described normal power supplies network is connected to described each motor through bypass contactor and softly opens between contactor KM; Described first soft starter, the second soft starter, eachly softly open contactor KM, each bypass contactor is connected with controller respectively.
In such scheme, described each motor and soft opening between contactor KM are also connected with thermal relay FR.
Compared with prior art, beneficial effect of the present invention:
The present invention adopts redundance type control mode can back up starter after main starter breaks down and takes over job, thus improves whole system reliability of operation, reduces overall failure rate.
The present invention adopts alternative expression control mode that separate unit soft starter can be avoided to occur starting frequent fault, also can when certain soft starter fault, by another soft starter actuating motor, reach the effect of mutual redundancy, improve system reliability, alternative expression control mode can also extend the actual life of soft starter.
The present invention can play and two soft starters are worked under the mode of optimum, improves the reliability of system, the useful life of extension device, start quickly process, reaches the object of synergy consumption reduction.
Accompanying drawing explanation
Fig. 1 is motor starting process flow chart of the present invention;
Fig. 2 is annexation schematic diagram of the present invention;
Fig. 3 is the of the present invention two redundance type control flows dragging the control method of many redundance types flexible starter for electric motor;
Fig. 4 is the of the present invention two alternative expression control flows dragging the control method of many redundance types flexible starter for electric motor.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The control method that the embodiment of the present invention provides a kind of two to drag many redundance types flexible starter for electric motor, as shown in Figure 1, the method is: in two soft starters, Stochastic choice soft starter is as main starter, another soft starter is as from starter, after receiving first enabled instruction, first institute's controller softly opens that contactor is closed, the first bypass contactor disconnects by first of the first motor, then controller drives main starter to start working, make the soft voltage opened on electric power network increase gradually, described first motor starts gradually; After the soft voltage opening electric power network reaches rated voltage, described first electric motor normal working, now described controller disconnection is soft opens contactor, closed bypass contactor, and the soft start-up process of described first motor completes, controller drives main starter to quit work, and enters radiating state; Repeat above-mentioned steps and open residual electricity motivation successively.
Describedly also comprise detection two soft starters whether fault before receive first enabled instruction, when main starter breaks down, by main starter with replace from starter; When the equal fault of two soft starters, start and stop.
As shown in Figure 2, in described two soft starters, the lead-in wire terminal of the first soft starter, the second soft starter is connected with the first fast acting fuse FU1, the second fast acting fuse FU2 respectively, described first fast acting fuse FU1, the second fast acting fuse FU2 are connected with normal power supplies network through the first circuit breaker Q F1, the second circuit breaker Q F2 respectively, form softly to open electric power network after the leading-out terminal parallel connection of described first soft starter, the second soft starter; The described soft electric power network that opens connects several motor, each motor and soft open all to be connected with between electric power network softly open contactor KM, described normal power supplies network is connected to described each motor through bypass contactor and softly opens between contactor KM; Described first soft starter, the second soft starter, eachly softly open contactor KM, each bypass contactor is connected with controller respectively.
Described each motor and soft opening between contactor KM are also connected with thermal relay FR.
As shown in Figure 3, the course of work of the present invention: under redundance type control mode, after receiving enabled instruction, first judge two soft starters normal/fault-signal, if two are fault, then stop start-up course, system alarm; If a fault, then good starter is set as main starter, and fault soft starter is set to from starter, reports to the police simultaneously; Then the main starter actuating motor of control order; If two all do not have fault, then can use the main starter actuating motor previously selected, not participate in work from starter; After often completing one-shot, described controller all will carry out primary fault judgement to main starter, if do not have fault, then continues to start next motor; If there is fault, then main soft starter is reported to the police and is quit work, and uses and completes residue work from starter, is at this moment set to main soft starter from soft starter.Under redundance type control mode, as long as main starter does not break down, the status of principal and subordinate's starter does not also change.Only have when just can be replaced by from starter after main starter fault, fault starter is reduced to and is placed in state to be repaired from starter and reports to the police, fault soft starter through keep in repair normal after, still as putting into system from starter.
The control method that the embodiment of the present invention also provides a kind of two to drag many redundance types flexible starter for electric motor, as shown in Figure 3, the method is: under alternative expression control mode, in two soft starters, Stochastic choice soft starter is as main starter, another soft starter is as from starter, after receiving first enabled instruction, first first of the first motor soft contactor that opens closes by institute's controller, first bypass contactor disconnects, then controller drives main starter to start working, the soft voltage opened on electric power network is made to increase gradually, described first motor starts gradually, after the soft voltage opening electric power network reaches rated voltage, described first electric motor normal working, now described controller disconnection is soft opens contactor, closed bypass contactor, and the soft start-up process of described first motor completes, controller drives main starter to quit work, and enters radiating state, when each start next motor before, main starter and replacing from starter, the main starter after replacement opens residual electricity motivation successively according to above-mentioned steps again.
Describedly also comprise detection two soft starters whether fault before receive first enabled instruction, when main starter breaks down, by main starter with replace from starter; When the equal fault of two soft starters, start and stop.
In described two soft starters, the lead-in wire terminal of the first soft starter, the second soft starter is connected with the first fast acting fuse FU1, the second fast acting fuse FU2 respectively, described first fast acting fuse FU1, the second fast acting fuse FU2 are connected with normal power supplies network through the first circuit breaker Q F1, the second circuit breaker Q F2 respectively, form softly to open electric power network after the leading-out terminal parallel connection of described first soft starter, the second soft starter; The described soft electric power network that opens connects several motor, each motor and soft open all to be connected with between electric power network softly open contactor KM, described normal power supplies network is connected to described each motor through bypass contactor and softly opens between contactor KM; Described first soft starter, the second soft starter, eachly softly open contactor KM, each bypass contactor is connected with controller respectively.
Described each motor and soft opening between contactor KM are also connected with thermal relay FR.
As shown in Figure 4, the course of work of the present invention: under alternative expression control mode, after receiving enabled instruction, first judge two soft starters normal/fault-signal, if two are fault, then stop start-up course, system alarm; If a fault, then good starter is set as main starter, and fault soft starter is set to from starter, and simultaneity factor is reported to the police to operator.Then the soft mode actuating motor according to Fig. 1 of the main starter of control order, after having started, the master slave relation of two soft starters has not changed; If two all normal, then the main starter of control order is according to the process actuating motor of Fig. 1.After having started, the master slave relation of two soft starters is exchanged by controller, namely starting next time uses another soft starter to complete startup, alternate cycles like this is until complete all working, by alternative expression control mode, often perform one-shot order then master and slave starter exchange an identity, no matter any platform starter fault, controller will receive fault-signal immediately, rapidly fault starter be placed in state to be repaired and report to the police, good starter is considered as main starter continuous operation, the starter again dropped into after maintenance is considered as from starter simultaneously.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (8)
1. one kind two is dragged the control method of many redundance types flexible starter for electric motor, it is characterized in that, the method is: in two soft starters, Stochastic choice soft starter is as main starter, another soft starter is as from starter, after receiving first enabled instruction, first institute's controller softly opens that contactor is closed, the first bypass contactor disconnects by first of the first motor, then controller drives main starter to start working, make the soft voltage opened on electric power network increase gradually, described first motor starts gradually; After the soft voltage opening electric power network reaches rated voltage, described first electric motor normal working, now described controller disconnection is soft opens contactor, closed bypass contactor, and the soft start-up process of described first motor completes, controller drives main starter to quit work, and enters radiating state; Repeat above-mentioned steps and open residual electricity motivation successively.
2. according to claim 1 two control methods of dragging many redundance types flexible starter for electric motor, it is characterized in that, describedly also comprise detection two soft starters whether fault before receive first enabled instruction, when main starter breaks down, by main starter with replace from starter; When the equal fault of two soft starters, start and stop.
3. according to claim 1 two control methods of dragging many redundance types flexible starter for electric motor, it is characterized in that, in described two soft starters, the lead-in wire terminal of the first soft starter, the second soft starter is connected with the first fast acting fuse FU1, the second fast acting fuse FU2 respectively, described first fast acting fuse FU1, the second fast acting fuse FU2 are connected with normal power supplies network through the first circuit breaker Q F1, the second circuit breaker Q F2 respectively, form softly to open electric power network after the leading-out terminal parallel connection of described first soft starter, the second soft starter; The described soft electric power network that opens connects several motor, each motor and soft open all to be connected with between electric power network softly open contactor KM, described normal power supplies network is connected to described each motor through bypass contactor and softly opens between contactor KM; Described first soft starter, the second soft starter, eachly softly open contactor KM, each bypass contactor is connected with controller respectively.
4. according to claim 3 two control methods of dragging many redundance types flexible starter for electric motor, is characterized in that: described each motor and soft opening between contactor KM are also connected with thermal relay FR.
5. one kind two is dragged the control method of many redundance types flexible starter for electric motor, it is characterized in that, the method is: in two soft starters, Stochastic choice soft starter is as main starter, another soft starter is as from starter, after receiving first enabled instruction, first institute's controller softly opens that contactor is closed, the first bypass contactor disconnects by first of the first motor, then controller drives main starter to start working, make the soft voltage opened on electric power network increase gradually, described first motor starts gradually; After the soft voltage opening electric power network reaches rated voltage, described first electric motor normal working, now described controller disconnection is soft opens contactor, closed bypass contactor, and the soft start-up process of described first motor completes, controller drives main starter to quit work, and enters radiating state; When each start next motor before, main starter and replacing from starter, the main starter after replacement opens residual electricity motivation successively according to above-mentioned steps again.
6. according to claim 5 two control methods of dragging many redundance types flexible starter for electric motor, it is characterized in that, describedly also comprise detection two soft starters whether fault before receive first enabled instruction, when main starter breaks down, by main starter with replace from starter; When the equal fault of two soft starters, start and stop.
7. according to claim 6 two control methods of dragging many redundance types flexible starter for electric motor, it is characterized in that, in described two soft starters, the lead-in wire terminal of the first soft starter, the second soft starter is connected with the first fast acting fuse FU1, the second fast acting fuse FU2 respectively, described first fast acting fuse FU1, the second fast acting fuse FU2 are connected with normal power supplies network through the first circuit breaker Q F1, the second circuit breaker Q F2 respectively, form softly to open electric power network after the leading-out terminal parallel connection of described first soft starter, the second soft starter; The described soft electric power network that opens connects several motor, each motor and soft open all to be connected with between electric power network softly open contactor KM, described normal power supplies network is connected to described each motor through bypass contactor and softly opens between contactor KM; Described first soft starter, the second soft starter, eachly softly open contactor KM, each bypass contactor is connected with controller respectively.
8. according to claim 7 two control methods of dragging many redundance types flexible starter for electric motor, is characterized in that: described each motor and soft opening between contactor KM are also connected with thermal relay FR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072877.6A CN104638987A (en) | 2015-02-11 | 2015-02-11 | Method for controlling soft starting of multiple-driven-by-two redundant motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072877.6A CN104638987A (en) | 2015-02-11 | 2015-02-11 | Method for controlling soft starting of multiple-driven-by-two redundant motor |
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| CN104638987A true CN104638987A (en) | 2015-05-20 |
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| CN201510072877.6A Pending CN104638987A (en) | 2015-02-11 | 2015-02-11 | Method for controlling soft starting of multiple-driven-by-two redundant motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034813A (en) * | 2015-07-03 | 2015-11-11 | 株洲南车时代电气股份有限公司 | Train power supply control device |
| CN108222113A (en) * | 2018-03-20 | 2018-06-29 | 徐州徐工矿山机械有限公司 | A kind of electric hydraulic excavating machine start control system and control method |
| CN111330698A (en) * | 2020-03-26 | 2020-06-26 | 厦门理工学院 | Continuous ball mill and control method |
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| CN2766451Y (en) * | 2004-07-16 | 2006-03-22 | 赵敏 | Redundancy soft starting device for AC motor |
| CN201690400U (en) * | 2010-06-03 | 2010-12-29 | 上海华通企业集团有限公司 | Frequency-conversion soft-start hybrid power cabinet |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034813A (en) * | 2015-07-03 | 2015-11-11 | 株洲南车时代电气股份有限公司 | Train power supply control device |
| CN105034813B (en) * | 2015-07-03 | 2018-04-10 | 株洲南车时代电气股份有限公司 | Train power supply control device |
| CN108222113A (en) * | 2018-03-20 | 2018-06-29 | 徐州徐工矿山机械有限公司 | A kind of electric hydraulic excavating machine start control system and control method |
| CN108222113B (en) * | 2018-03-20 | 2024-04-16 | 徐州徐工矿业机械有限公司 | Starting control system and method for electro-hydraulic excavator |
| CN111330698A (en) * | 2020-03-26 | 2020-06-26 | 厦门理工学院 | Continuous ball mill and control method |
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Application publication date: 20150520 |