CN202043063U - Intelligent start control device - Google Patents
Intelligent start control device Download PDFInfo
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- CN202043063U CN202043063U CN2011201611926U CN201120161192U CN202043063U CN 202043063 U CN202043063 U CN 202043063U CN 2011201611926 U CN2011201611926 U CN 2011201611926U CN 201120161192 U CN201120161192 U CN 201120161192U CN 202043063 U CN202043063 U CN 202043063U
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Abstract
The utility model discloses an intelligent start control device, which comprises a microprocessor, a motor voltage synchronization detection circuit, a motor current synchronization phase angle detection circuit and a silicon controlled trigger control circuit, wherein the microprocessor is respectively connected with the motor voltage synchronization detection circuit, the motor current synchronization phase angle detection circuit and the silicon controlled trigger control circuit. According to the technical scheme disclosed by the utility model, motor operation efficiency can be improved, and active power consumption wasted by a motor is reduced.
Description
Technical field
The utility model relates to technical field of motors, relates in particular to the intelligent starting control device.
Background technology
Existing motor power saving product has frequency converter and three phase electric machine intelligence controlling device.Because frequency converter is to adopt the adjusting rotating speed of motor to reach energy-conservation, energy-conservation efficient and effect are not good enough.And existing three phase electric machine intelligence controlling device technology is to adopt current transformer detection electric current and voltage fixed value to realize the comparison of electric current and voltage, control the voltage and current of motor, when current transformer detects real-time current, must wait until after current of electric changes output signal is just arranged, time cycle is long, and make easily motor generation stall and moment that motor load is changed greatly cause motor stall inadequately.
The utility model content
The purpose of this utility model is to propose the intelligent starting control device, can improve the operational efficiency of motor, reduces the meritorious power consumption of motor waste.
For reaching this purpose, the utility model by the following technical solutions:
The intelligent starting control device, comprise microprocessor, electric moter voltage synchronization testing circuit, current of electric synchronization phase angle testing circuit and controllable silicon trigger control circuit, microprocessor is connected with the controllable silicon trigger control circuit with control electric moter voltage synchronization testing circuit, current of electric synchronization phase angle testing circuit respectively.
Also comprise the motor stall protective circuit, the motor stall protective circuit is connected with microprocessor.
Described controllable silicon trigger control circuit further comprises three bidirectional triode thyristor modules, and three bidirectional triode thyristor modules are separately positioned on the three phase supply power input of motor.
Also comprise transformer; the transformer input is connected with mains supply, and protection is connected the transformer output with motor stall with microprocessor, electric moter voltage synchronization testing circuit, current of electric synchronization phase angle testing circuit, controllable silicon trigger control circuit respectively.
Also comprise rectification circuit and filter circuit, rectification circuit and filter circuit are between transformer output and microprocessor, electric moter voltage synchronization testing circuit, current of electric synchronization phase angle testing circuit, controllable silicon trigger control circuit and motor stall protection.
Also comprise watchdog timer, watchdog timer is connected with microprocessor.
Also comprise start-up circuit, start-up circuit is connected with the enabling signal port of microprocessor, and start-up circuit further comprises photoelectrical coupler, inverter and the indicator light of being controlled by relay.
Adopt the technical solution of the utility model, had following technique effect:
1, use can not cause motor rotation blockage and motor stall on motor load variation equipment greatly;
2, do not change electric machine operating characteristic and motor speed, data setting is good, and tracking Control does not need artificial adjusting automatically;
3,, when appearring in motor, phase shortage, overcurrent, phenomenon such as under-voltage can in 5 seconds, carry out protection to motor monitoring in real time and protection;
4, motor is adopted soft start, the impulse current that when effectively reducing electric motor starting electrical network is produced, 0.5 to 120 second start-up time is adjustable.
Description of drawings
Fig. 1 is an intelligent starting control device structured flowchart in the utility model embodiment.
Fig. 2 is an intelligent starting control device power supply circuit in the utility model embodiment.
Fig. 3 is intelligent starting control device start-up circuit one figure in the utility model embodiment.
Fig. 4 is intelligent starting control device start-up circuit two figure in the utility model embodiment.
Fig. 5 is the electric moter voltage synchronization testing circuit figure of intelligent starting control device in the utility model embodiment.
Fig. 6 is the current of electric synchronization phase angle testing circuit figure of intelligent starting control device in the utility model embodiment.
Fig. 7 is the controllable silicon trigger control circuit figure of intelligent starting control device in the utility model embodiment.
Fig. 8 is the motor stall protective circuit figure of intelligent starting control device in the utility model embodiment.
Fig. 9 is the watchdog timer circuit diagram of intelligent starting control device in the utility model embodiment.
Embodiment
Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.
Intelligent starting control device of the present utility model is to realize controlling by the phase angle that changes motor, the intelligent starting control device with the current hysteresis that detects after waveform after microprocessor processes, adopt and adjust the silicon controlled pulse-triggered, voltage and current is reduced to maintenance to be complementary with the motor load constant torque, the operational efficiency of motor is improved, reduce the meritorious power consumption of motor waste, solved at motor speed and can not change, motor load change greatly disintegrating machine and equipment such as punch press on the motor rotation blockage and the not enough problem of moment that occur.
The microprocessor of this intelligent starting control device is connected with the controllable silicon trigger control circuit with control electric moter voltage synchronization testing circuit, current of electric synchronization phase angle testing circuit respectively, and the motor stall protective circuit is connected with microprocessor.
Wherein the controllable silicon trigger control circuit further comprises three bidirectional triode thyristor modules, and three bidirectional triode thyristor modules are separately positioned on the three phase supply power input of motor.
The transformer input is connected with mains supply, and protection is connected the transformer output with motor stall with microprocessor, electric moter voltage synchronization testing circuit, current of electric synchronization phase angle testing circuit, controllable silicon trigger control circuit respectively with filter circuit by rectification circuit.
When voltage (V) and electric current (A) are all represented with the phasor form, angle between the two is the phase angle, can represent the amount of electric current lagging voltage, for induction machine, electric current lags behind voltage usually, uses the triangle relation of the electric current lagging voltage of power factor (QPF) expression quantification usually.Motor is under different loading conditions, and the phase angle will change thereupon, the load current lagging voltage 30% of common motor, electric current lagging voltage 80% when unloaded.The phased intelligence controlling device of motor is by the phase angle between electric moter voltage synchronization testing circuit and current of electric synchronization phase angle testing circuit continuous detecting electric moter voltage and the electric current, after microprocessor processes, adopt and adjust the silicon controlled pulse-triggered, voltage and current is reduced to maintenance to be complementary with the motor load constant torque, the operational efficiency of motor is improved, reduce the meritorious power consumption of motor waste simultaneously.Changing the phase angle is by thyristor gating circuit and thyristor regulation voltage waveform, only allows the positive half cycle of alternating voltage waveform in the bidirectional triode thyristor module and a part of voltage supply motor of negative half period to realize after microprocessor calculates.Microprocessor adopts the back-emf of motor to monitor the continuity of motor load situation of change with holding current by the stall protection circuit simultaneously, avoids the motor stall situation to occur.
Microprocessor also is connected with a watchdog timer, is used for the accuracy that monitor microprocessors software carries out, and software is resetted and resets.
The enabling signal port of microprocessor also is connected with an intelligence controlling device start-up circuit, and this intelligence controlling device start-up circuit comprises photoelectrical coupler, inverter and the indicator light of being controlled by relay.
Describe the intelligent starting control device below for example, Fig. 1 is an intelligent starting control device structured flowchart in the utility model embodiment.As shown in Figure 1; this intelligent starting control device is the phased intelligence controlling device of a kind of 380V three phase electric machine; comprise transformer 1; microprocessor 2; electric moter voltage synchronization testing circuit 3; current of electric synchronization phase angle testing circuit 4; controllable silicon trigger control circuit 5 and motor stall protective circuit 6; transformer 1 connects mains supply 7; and the output AC electricity is to microprocessor 1 and above-mentioned each circuit supply; microprocessor 1 connects control electric moter voltage synchronization testing circuit 3; current of electric synchronization phase angle testing circuit 4; controllable silicon trigger control circuit 5 and motor stall protective circuit 6; described controllable silicon trigger control circuit 5 comprises three bidirectional triode thyristor modules; three bidirectional triode thyristor modules are separately positioned on three phase supply power supply 9 inputs of motor 8, and the enabling signal port one 0 of microprocessor is connected with start-up circuit 11.
Each several part operation principle to this intelligent starting control device is specifically described below.
For the circuit that power supply is provided of microprocessor and each circuit as shown in Figure 2, transformer output 12V alternating current, this voltage produces level and smooth DC15V voltage by rectifier BR1 rectification and capacitor C 1 and capacitor C 2 filtering.DC15V provides power supply for thyristor gating circuit and relay, also is voltage stabilizing triode VR1 power supply, and VR1 export DC5V, and capacitor C 3 and capacitor C 4 are filter capacitors of 5V power supply, through the Z1 voltage stabilizing, and generation DC5V stabilized voltage power supply.5V voltage is to provide power supply for microprocessor.
The start-up circuit of three phase electric machine intelligent starting control device before the starting three phase electric machine intelligent starting control device, be guaranteed to install errorless as shown in Figure 3 and Figure 4.Behind the contact jaw (1) and (2) short circuit of CONN7A, DC5V passes through IC9.Resistance R 1 provides power supply for photoelectrical coupler IC9.Triode conducting in the photoelectrical coupler.(16) pin of IC1 is a level "0", starts starting sequence.
Microprocessor IC1 is not as detecting any fault, microprocessor IC1(27) just pin can be exported " O " level, (11) pin of inverter ic 5 becomes high level, make RL1 energising adhesive and light L1, the operation beginning.Simultaneously, (26) pin of IC1 is exported " O ", and display lamp L4 is lighted, until mistake of the selected starting time.Own mistake of starting time, after L4 extinguishes, (32) pin of IC1 output " 0 ", and (15) pin of inverter ic 2 is subjected to IC1(32) triggering of level, the adhesive of relay R L2 electricity.(33) pin of IC1 is exported " O ", and display lamp L5 is lighted.
Electric moter voltage synchronization testing circuit triggers for making microprocessor can correctly control silicon controlled as shown in Figure 5, and the zero crossing that microprocessor is got the A phase voltage is triggering signal (PHA of CONN2 port).To 0.25V, make logic numeral ic chip 11 pin is low level to the A phase voltage through resistance R 6 and resistance R 7.As A during at negative half period, logic numeral ic chip 11 is " 1 ", otherwise but as A during at negative half period.So at PHA is square wave.This signal can be sent to microprocessor IC1 (25) pin, by IC1 trigger B mutually with C mutually.
Current of electric synchronization phase angle testing circuit as shown in Figure 6, after the first phase control of motor because loading and when operation motor power factor ceaselessly changing, so microprocessor can change the control point into the zero crossing of electric current.The sampling mode of power factor is as than effect with the fixed value of voltage over zero and current zero-crossing point.In order to detect the phase angle of electric current lagging voltage, reflect the loading condition of motor.Photoelectrical coupler IC6 detects the controllable silicon both end voltage, and this voltage waveform identical with electric current can be delivered to microprocessor IC1(34) pin.At this moment, microprocessor can change the power factor that impulse train cooperates motor in response to the form detection signal position of voltage wave.
The controllable silicon trigger control circuit as shown in Figure 7, (39) pin of microprocessor IC1 is an A phase power supply triggering signal, and (6) pin of inverter ic 2 returns signal.By pulse, and R9 triggers the A phase silicon controlled positive and negative utmost point to pulse converter PTI by IC4, and trigger impulse is an impulse train with per 15 120us, guarantees the silicon controlled normally.B is mutually identical with A with C phase operation principle mutually.
The motor stall protective circuit as shown in Figure 8, the phased intelligence controlling device of motor is to adopt the back-emf of motor to monitor the motor load situation of change, the variation of (12) heel track motor reaction gesture of microprocessor IC1.When optimization state and impact load, it is discontinuous that electric current can become.The rectangular wave that (10) human hair combing waste of IC2 goes out, and change the continuity that its trigger angle is come holding current, avoid the motor stall situation to occur.
The watchdog timer circuit as shown in Figure 9, (7) pin of memory IC 3 is to be used for the correct procedure that monitoring software carries out, pin normally sends pulse when each work period microprocessor IC1 (24), (9) pin of microprocessor IC1 can keep closing the state of closing.(7) pin as memory IC 3 is when not receiving due pulse because of any situation, and (5) pin of memory IC 3 will become one second of " 1 " current potential, make (9) pin of IC1 enter pattern 1, and software is reset.Microprocessor+the 5V power supply also monitored by IC3.Suddenly descend as main power voltage, when detected voltage is lower than 4.6V and above 1S, (5) pin of memory IC 3 will become " 1 " current potential, and (9) pin of microprocessor IC1 also will enter pattern 1, and software is reset.
The result of use of this three phase electric machine intelligent starting control device on disintegrating machine is remarkable, because crusher load changes very greatly, zero load, fully loaded and overburden three phases are in seconds arranged, if the speed at detected phase angle and control time are greater than 40 microseconds, motor can cause moment to make motor rotation blockage and stall inadequately, and long-time use can be burnt motor.And this three phase electric machine intelligent starting control device is installed on the disintegrating machine of 220KW, and disintegrating machine does not have phenomenons such as stall and stall, and the electric current when this disintegrating machine is unloaded drops to 72A from 160A, and voltage drops to OV from 396V, and active power drops to 59KW from 86KW.
The result of use of this three phase electric machine intelligent starting control device on oil pumper be highly significant also, because pump load changes also very greatly, oil pumper work one-period have half be half load half for fully loaded, 55KW oil pumper phase electric current weekly changes to 87A at 25A, on average per hour electricity consumption at 12KW/H, install behind this three phase electric machine intelligent starting control device weekly that the phase electric current changes to 69A at 12A, on average per hour power consumption is 9.2KW/H.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with the people of this technology in the disclosed technical scope of the utility model; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (7)
1. intelligent starting control device, it is characterized in that, comprise microprocessor, electric moter voltage synchronization testing circuit, current of electric synchronization phase angle testing circuit and controllable silicon trigger control circuit, microprocessor is connected with the controllable silicon trigger control circuit with control electric moter voltage synchronization testing circuit, current of electric synchronization phase angle testing circuit respectively.
2. intelligent starting control device according to claim 1 is characterized in that, also comprises the motor stall protective circuit, and the motor stall protective circuit is connected with microprocessor.
3. according to claim 1 or 2 described intelligent starting control device, it is characterized in that described controllable silicon trigger control circuit further comprises three bidirectional triode thyristor modules, three bidirectional triode thyristor modules are separately positioned on the three phase supply power input of motor.
4. according to claim 1 or 2 described intelligent starting control device; it is characterized in that; also comprise transformer; the transformer input is connected with mains supply, and protection is connected the transformer output with motor stall with microprocessor, electric moter voltage synchronization testing circuit, current of electric synchronization phase angle testing circuit, controllable silicon trigger control circuit respectively.
5. intelligent starting control device according to claim 4; it is characterized in that; also comprise rectification circuit and filter circuit, rectification circuit and filter circuit are between transformer output and microprocessor, electric moter voltage synchronization testing circuit, current of electric synchronization phase angle testing circuit, controllable silicon trigger control circuit and motor stall protection.
6. intelligent starting control device according to claim 1 is characterized in that, also comprises watchdog timer, and watchdog timer is connected with microprocessor.
7. intelligent starting control device according to claim 1, it is characterized in that, also comprise start-up circuit, start-up circuit is connected with the enabling signal port of microprocessor, and start-up circuit further comprises photoelectrical coupler, inverter and the indicator light of being controlled by relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201611926U CN202043063U (en) | 2011-05-19 | 2011-05-19 | Intelligent start control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201611926U CN202043063U (en) | 2011-05-19 | 2011-05-19 | Intelligent start control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202043063U true CN202043063U (en) | 2011-11-16 |
Family
ID=44970488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201611926U Expired - Fee Related CN202043063U (en) | 2011-05-19 | 2011-05-19 | Intelligent start control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202043063U (en) |
-
2011
- 2011-05-19 CN CN2011201611926U patent/CN202043063U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20160519 |