CN106357165A - Starting magnetic control optimizing device of motor - Google Patents
Starting magnetic control optimizing device of motor Download PDFInfo
- Publication number
- CN106357165A CN106357165A CN201610867374.2A CN201610867374A CN106357165A CN 106357165 A CN106357165 A CN 106357165A CN 201610867374 A CN201610867374 A CN 201610867374A CN 106357165 A CN106357165 A CN 106357165A
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- China
- Prior art keywords
- voltage
- contactor
- motor
- regulation
- magnetic control
- 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
- 230000033228 biological regulation Effects 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims abstract 4
- 238000004804 winding Methods 0.000 claims description 59
- 239000003999 initiator Substances 0.000 claims description 19
- 238000005457 optimization Methods 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 5
- 230000001012 protector Effects 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 230000008450 motivation Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims 2
- 238000005303 weighing Methods 0.000 claims 1
- 230000006870 function Effects 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 4
- 239000007858 starting material Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000000819 phase cycle Methods 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
-
- 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
- H02P1/04—Means for controlling progress of starting sequence in dependence upon time or upon current, speed, or other motor parameter
- H02P1/10—Manually-operated on/off switch controlling relays or contactors operating sequentially for starting a motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
Abstract
The invention relates to the field of motors, in particular to a starting magnetic control optimizing device of a motor. The starting magnetic control optimizing device comprises a power source, the motor, a soft starter, a moulded case circuit breaker, an imbalance voltage regulator, an optimizing running alternating current contactor, a bypass running alternating current contactor and a voltage regulating alternating current contractor. The starting magnetic control optimizing device has the advantages that according to the electromagnetic balance principle of a transformer, under the matching action of the soft starter and the imbalance voltage regulator, the soft starting and stopping functions of the motor are realized; in the optimizing running process, the influence and danger of odd harmonic current on the motor are effectively blocked; according to the load conditions of the motor, the running voltage is regulated, and the light-load loss is reduced; the functions of motor protection, soft starting, soft stopping, filtering of system odd harmonics, regulation of the running voltage of the motor and the like are integrated, and the optimizing running of the motor in the optimum state is always guaranteed.
Description
Technical field
The present invention relates to electric motors, optimize device particularly to a kind of motor start-up magnetic control.
Background technology
When motor directly initiates, its starting current is 4-7 times of its rated current, if power system capacity is less than normal, starts
Electric current will affect the normal operation of miscellaneous equipment, and when serious, motor will be unable to start even burning apparatus, if simultaneously direct
Starting time is longer will to lead to electric motor overheating serious, the service life of impact motor.
The main apparatus such as the electromotor in three-phase electrical power system it is ensured that in system, transformator, motor safety is high
Effect ground runs, and keeps the symmetrical of three-phase load and balance to be very necessary.But, in actual power system, three-phase load
It is difficult to accomplish fully symmetrical and balance, according to mathematical theory, three phase unbalance current can be analyzed to forward-order current, negative phase-sequence electricity
Stream, zero-sequence current (inclusion harmonic current), wherein negative-sequence current harmonic electric current can be made to the safety of motor and power supply quality
Become and greatly endanger: so that the ferrum of motor stator and rotor, copper loss is greatly increased and seriously generate heat, rotor of easily burning, and produce
The extraneous vibration moment of two frequencys multiplication, makes the vibration of motor and noise greatly increase, and jeopardizes the safe operation of motor and normal
Exert oneself.
Be used alone soft initiator or converter start and stop motor at present, both starting devices for system produce strange
The filtration improvement of subharmonic is at all helpless, and its own also can produce harmonic current injection system, generally deposits in electrical network
The drawbacks of the situation of three-phase load unbalance and prior art exist and deficiency, how to design one kind and can effectively stop odd
Impact and harm that harmonic current produces to motor, have both the motor start-up optimization dress that soft start soft stop stops function simultaneously again
Put, it has also become urgent problem.
Content of the invention
The technical problem to be solved in the present invention be for the situation of generally existing three-phase load unbalance in electrical network and
The drawbacks of prior art exists and deficiency, provide a kind of novel motor intelligent starting magnetic control to optimize device, when optimizing operation
The impact that odd harmonic electric current produces to motor and harm can effectively be stoped, can be adjusted according to the load condition of motor simultaneously
Its working voltage reduces the loss of its underloading.
For this reason, concrete scheme of the present invention is as follows:
A kind of motor start-up magnetic control optimizes device, including power supply, motor, soft initiator, breaker of plastic casing, unbalance voltage
Modulator, optimize AC contactor, bypass AC contactor and voltage-regulation A.C. contactor, described mould shell
The end of incoming cables of chopper is connected with power supply, the leading-out terminal of breaker of plastic casing respectively with the input of unbalance voltage modulator and soft
The end of incoming cables of trigger connects, and the outfan of the described end of incoming cables and unbalance voltage modulator optimizing AC contactor connects
Connect, the bypass terminal of described soft initiator is connected with the end of incoming cables of bypass AC contactor, described optimization runs exchange and connects
The leading-out terminal of tentaculum is connected with the leading-out terminal of bypass AC contactor and the outfan of soft initiator respectively；Described soft start
The leading-out terminal of device, bypass AC contactor and optimization AC contactor is all connected with motor；Described voltage-regulation
It is connected with the pressure regulation terminal of unbalance voltage modulator with the end of incoming cables of A.C. contactor, the going out of voltage-regulation A.C. contactor
Line end short circuit.
Further, described unbalance voltage modulator include plane three-limb core, nine main windings, three voltage-regulation around
Group and three balance windings, difference three main windings of coiling, a voltage successively on three stem stems of described plane three-limb core
The tail end adjusting adjacent with voltage-regulation winding main winding on winding and balance a winding, and same stem stem is uneven electricity
The outfan of pressure modulator, the head end with the main winding of voltage-regulation winding lie farthest away is power input；It is located at different cores
Nine main windings on post three three are cascaded, and the arbitrarily described head end of voltage-regulation winding is adjacent with same stem stem
The tail end of main winding connect, the end of incoming cables company of the tail end of voltage-regulation winding and corresponding voltage-regulation A.C. contactor
Connect, described three balance end to end triangularities of winding.
Further, the quantity of described voltage-regulation A.C. contactor is three, three voltage-regulation A.C. contactors
Connect with corresponding three voltage-regulation windings respectively.
Further, also include controller, the binding post of described controller respectively with power supply and unbalance voltage modulator
Outfan connect.
Further, the leading-out terminal of described soft initiator, bypass AC contactor and optimization AC contactor leads to
Cross motor protector to be connected with motor.
Beneficial effects of the present invention are as follows:
The present invention, according to the electromagnetic balance principle of transformator, have developed a kind of novel motor and starts magnetic control optimization device, lead to
Cross the cooperation of soft initiator and unbalance voltage modulator, there is to motor soft start soft stop and stop function, when optimizing operation
The impact that odd harmonic electric current produces to motor and harm can effectively be stoped, can be adjusted according to the load condition of motor simultaneously
Its working voltage reduces the loss of its underloading.This device collection motor protection, soft start, soft stop are stopped, filtration system odd harmonic, tune
The functions such as whole motor running voltage are in one it is ensured that motor optimizes operation in the state of being in all the time most preferably.
Brief description
Fig. 1 is the structure principle chart of the present invention；
Fig. 2 is the structural representation of unbalance voltage modulator.
Specific embodiment
With reference to specific embodiment, the present invention is described in further details.
Optimize device with reference to a kind of motor start-up magnetic control shown in Fig. 1, including power supply, motor 13, breaker of plastic casing
11st, soft initiator 12, unbalance voltage modulator 14, optimization AC contactor 15, bypass AC contactor 16, three
Individual voltage-regulation A.C. contactor 17, controller 18 and motor protector 19.
Three ends of incoming cables of described breaker of plastic casing 11 are connected with electric power incoming line a, b, c, the leading-out terminal of breaker of plastic casing 11
It is connected with the input of unbalance voltage modulator 14 and the end of incoming cables of soft initiator 12 respectively, described optimization runs ac contactor
The end of incoming cables of device 15 is connected with the outfan of unbalance voltage modulator 14, and the bypass terminal of described soft initiator 12 is transported with bypass
The end of incoming cables of row A.C. contactor 17 connects, and the described leading-out terminal optimizing AC contactor 15 is run with bypass respectively and exchanges
The outfan of the leading-out terminal of catalyst 16 and soft initiator 12 connects.
Described soft initiator 12, bypass AC contactor 16 and the leading-out terminal connection optimizing AC contactor 15
And be connected with motor 13 by motor protector 19.Described voltage-regulation is electric with imbalance with the end of incoming cables of A.C. contactor 17
The pressure regulation terminal (voltage-regulation winding) of pressure modulator 14 connects, the voltage-regulation leading-out terminal short circuit of A.C. contactor 17.
The binding post of described controller 18 outfan with electric power incoming line a, b, c and unbalance voltage modulator 14 respectively
Connect.
With reference to shown in Fig. 2, unbalance voltage modulator 14 include 20, nine main winding 1a of plane three-limb core, 2a, 3a,
1b, 2b, 3b, 1c, 2c, 3c, three voltage-regulation winding 5a, 5b, 5c and three balances winding 4a, 4b, 4c.
Three main winding 1a of coiling, 2a, 3a, a voltage-regulation winding 5a successively on the stem stem 21 of plane three-limb core 20
And a balance winding 4a；Three main winding 1b of coiling, 2b, 3b, a voltage-regulation winding 5b and one successively on stem stem 22
Balance winding 4b；On stem stem 23 successively three main winding 1c of coiling, 2c, 3c, a voltage-regulation winding 5c and one balance around
Group 4c.
And nine main windings three three being located on different stem stems are cascaded, main winding 1a tail end and 2b in Fig. 2
Head end is connected, the tail end of 2b is connected with the head end of 3a, and the tail end of 1b is connected with the head end of 2c, the head of the tail end of 2c and 3b
End is connected, and the tail end of 1c is connected with the head end of 2a, the tail end of 2a is connected with the head end of 3c.
Tri- terminals of a, b, c are connected with the head end of main winding 1a, 1b, 1c respectively for power input, a, b, c tri-
Terminals are that the outfan of unbalance voltage modulator 14 is connected with the tail end of main winding 3a, 3b, 3c respectively.
The tail end of the head end of the described voltage-regulation winding 5a main winding 3a adjacent with same stem stem 21 connects, voltage-regulation
The tail end of winding 5a divides three terminals x1, x2, x3 to connect with the end of incoming cables of corresponding voltage-regulation A.C. contactor 17；With
Sample, the tail end of the head end of the voltage-regulation winding 5b main winding 3b adjacent with same stem stem 22 connects, voltage-regulation winding 5b
Tail end divide the end of incoming cables of three terminals y1, y2, y3 and corresponding voltage-regulation A.C. contactor 17 to connect；Voltage-regulation
The tail end of the head end of the winding 5c main winding 3c adjacent with same stem stem 23 connects, and the tail end of voltage-regulation winding 5c divides three to connect
Line end z1, z2, z3 are connected with the end of incoming cables of A.C. contactor 17 with corresponding voltage-regulation.
Described three balance end to end triangularities of winding 4a, 4b, 4c.
Unbalance voltage modulator according to the electromagnetic balance principle of transformator, by the special arranged crosswise of transformer coil
With combinations of polarities, increase the balance winding that one group of closed triangle connection does not export, the winding when transformer coil passes through electric current
Redistributed by electromagnetic induction so that the degree of unbalancedness of three-phase voltage and three-phase current is greatly reduced, significantly mitigated not
The harm to motor for the negative-sequence current that balanced load Current Decomposition goes out.Stoped by balancing winding circulation triple harmonic current
Triple harmonic current inflow motor, effectively prevents triple harmonic current from causing electric network pollution, meanwhile, when supply voltage occurs not
Also by electromagnetic induction, unbalance voltage can be evenly distributed in three-phase during balance, reduce the imbalance of secondary side output voltage
Degree, to improve the power supply quality of load side, plays the effect of balance, changes its output by the different voltage-regulation winding of short circuit
Voltage makes motor remain at operation under the voltage of high-quality.
The operation principle of the present invention is as follows: the present invention is connect using a breaker of plastic casing, soft initiator, five exchanges
Tentaculum, unbalance voltage modulator, controller composition motor start and stop, an optimization operating loop；Wherein bypass exchange
Catalyst and optimization AC contactor can only allow unification for two using electrical interlocks, mould when motor needs and runs
Case circuit breaker closes a floodgate, and controls soft initiator to run the internal two-way parallel thyristors of conducting according to opening that it sets through start button
Galvanic electricity pressure, electric current, actuating motor.Bypass A.C. contactor bypass according to selecting to close a floodgate after the completion of motor start-up and run electricity
Motivation, or select to optimize service meter mode.Optimize AC contactor to close a floodgate when choosing preferentially changes service meter,
Power supply carries out the odd harmonic in electric energy optimizing filtration system, output supply motor through unbalance voltage modulator.Controller
Binding post be connected with the outfan of electric power incoming line and unbalance voltage modulator respectively, electric current is obtained by current transformer
Sampled signal.Draw the optimum voltage scope of motor running by the sampled signal of electric current, by controlling three voltage-regulation
With A.C. contactor, unbalance voltage modulator is carried out with electromagnetism regulation and then change its output voltage so that motor is in
Optimize in the state of good and run.
The above, the only preferable specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any
Those familiar with the art in the technical scope of present disclosure, the change or replacement that can readily occur in, all answer
It is included within the scope of the present invention.Therefore the scope of the present invention is defined by the protection domain of claims.
Claims (5)
1. a kind of motor start-up magnetic control optimizes device, including power supply, motor and soft initiator it is characterised in that also including
Breaker of plastic casing, unbalance voltage modulator, optimization AC contactor, bypass AC contactor and voltage-regulation
With A.C. contactor, the end of incoming cables of described breaker of plastic casing is connected with power supply, the leading-out terminal of breaker of plastic casing respectively with imbalance
The end of incoming cables connection of the input of regulating and controlling voltage device and soft initiator, the described end of incoming cables optimizing AC contactor and injustice
The outfan of weighing apparatus regulating and controlling voltage device connects, and the bypass terminal of described soft initiator is connected with the end of incoming cables of bypass AC contactor
Connect, the described leading-out terminal optimizing AC contactor respectively with the bypass leading-out terminal of AC contactor and soft initiator
Outfan connects；Described soft initiator, bypass AC contactor and optimize the leading-out terminal of AC contactor all with electric
Motivation connects；The end of incoming cables of described voltage-regulation A.C. contactor is connected with the pressure regulation terminal of unbalance voltage modulator, electricity
The leading-out terminal short circuit of pressure regulation A.C. contactor.
2. a kind of motor start-up magnetic control according to claim 1 optimizes device it is characterised in that described unbalance voltage
Modulator includes plane three-limb core, nine main windings, three voltage-regulation windings and three balance windings, described plane three post
On three stem stems of iron core, three main windings of coiling, a voltage-regulation winding and one balance winding successively respectively, and same
On stem stem the tail end of the main winding adjacent with voltage-regulation winding be unbalance voltage modulator outfan, with voltage-regulation around
The head end of the main winding of group lie farthest away is power input；Nine main windings three three being located on different stem stems are connected on
Together, the tail end of the arbitrarily described head end of the voltage-regulation winding main winding adjacent with same stem stem connects, voltage-regulation around
The tail end of group is connected with the end of incoming cables of corresponding voltage-regulation A.C. contactor, and described three balance the end to end one-tenth three of windings
Angular.
3. a kind of motor start-up magnetic control according to claim 2 optimizes device it is characterised in that described voltage-regulation is used
The quantity of A.C. contactor is three, and three voltage-regulation A.C. contactors are connected with corresponding three voltage-regulation windings respectively
Connect.
4. a kind of motor start-up magnetic control according to claim 1 optimizes device it is characterised in that also including controller,
The binding post of described controller is connected with the outfan of power supply and unbalance voltage modulator respectively.
5. a kind of motor start-up magnetic control according to claim 1 optimize device it is characterised in that described soft initiator,
The leading-out terminal of bypass AC contactor and optimization AC contactor is connected with motor by motor protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610867374.2A CN106357165A (en) | 2016-09-29 | 2016-09-29 | Starting magnetic control optimizing device of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610867374.2A CN106357165A (en) | 2016-09-29 | 2016-09-29 | Starting magnetic control optimizing device of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106357165A true CN106357165A (en) | 2017-01-25 |
Family
ID=57866741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610867374.2A Pending CN106357165A (en) | 2016-09-29 | 2016-09-29 | Starting magnetic control optimizing device of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106357165A (en) |
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Application publication date: 20170125 |