CN2930096Y

CN2930096Y - Intelligent AC motor current controller

Info

Publication number: CN2930096Y
Application number: CNU2006201292351U
Authority: CN
Inventors: 谢绪权
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-07-26
Filing date: 2006-07-26
Publication date: 2007-08-01
Anticipated expiration: 2016-07-26

Abstract

The utility model relates to an intelligent current controller for the alternating current motor which is characterized in that a triggering control circuit connected in series with a current automatic detecting and identifying circuit is afterwards connected with the commercial power. When under experiment, the utility model is respectively connected with a single phase or a three phase alternating current motor with the same voltage and a plurality of powers and continues to work 24 hours from the startup, empty load, light load and rated load. The result shows that the current, vibration, temperature and noise of the alternating current motor decrease obviously, more particularly, the current is reduced by 25%-45% compared with the prior art. The operation with startup, empty load, light load and rated load has no difference with that without the utility model. The intelligent current controller for the alternating current motor has the characteristics of simple structure, intelligence, small volume, easy installment and long life and can be utilized for facilities driven by the alternating current motor in no matter factories, mines, docks, airports or hotels.

Description

Intelligentized AC electric electromechanics stream controller

Technical field

The utility model relates to a kind of device, particularly a kind of device of intelligentized AC electric electromechanics current control.

Technical background

At present, no matter the alternating current motor that uses is in unloaded, underload, when still nominal load is worked, the problem also big, that temperature is high and noise is big that it exists that electric current is excessive, machine shakes, main cause is produced by factors such as eddy current, harmonic wave, magnetic hysteresis, becomes big thereby cause motor power consumption and machine to decrease, therefore, shorten the useful life of motor, and wasted the energy.

Summary of the invention

The purpose of this utility model just provide a kind of intellectuality, as required for stream the alternating current motor current controller.

Principle of the present utility model is that to utilize bidirectional triode thyristor be the peculiar characteristic and the function of bidirectional thyristor, in circuit, play special effect, make the utility model can realize detecting in real time the electric current of alternating current motor, the phase angle of voltage and current at the work run duration, can discern automatically simultaneously and adjust required electric current and the voltage of motor, realized alternating current motor required be the flexibility of confession, and when alternating current motor moves, do not need manual adjustment electric current and voltage, just can automatic tracking Control electric current.

The purpose of this utility model is achieved in that intelligentized AC electric electromechanics stream controller, it is characterized in that trigger control circuit and electric current detect automatically to be connected on the civil power after identification circuit is connected in series.

Described trigger control circuit one end is by rectifier diode VD ₁-VD ₄Constitute bridge rectifier, the other end is by resistance R ₁, R ₂, bidirectional trigger diode V ₂, resistance R ₃Serial connection is connected on the controlled stage G of bidirectional thyristor VT; Resistance R ₄With capacitor C ₂After the parallel connection, one terminates on the controlled stage G of bidirectional thyristor VT, and the other end is connected on the output T of bidirectional thyristor VT ₁On; Capacitor C ₁One terminates at bidirectional trigger diode V ₂With resistance R ₂The centre, the other end is connected on the output T of bidirectional thyristor VT ₁On; Resistance R ₅One terminates at capacitor C ₁, resistance R ₂, bidirectional trigger diode V ₂Common joint on, the other end is connected on the interchange end of bridge rectifier.

Described electric current detects identification circuit automatically and meets switching diode VD by 3 pin of transformer T ₅Positive pole, switching diode D ₅Negative pole connect resistance R ₇, be connected on capacitor C ₄Negative pole on, resistance R ₁₁Be connected on the two ends of 3 pin and 4 pin of transformer T; Resistance R ₆One terminating resistor R ₁₁, another termination capacitor C ₄Negative pole; Voltage stabilizing didoe VD ₆Negative pole be connected on capacitor C ₄Positive pole, receive switching diode VD simultaneously ₅Negative pole, voltage stabilizing didoe VD ₆Positive pole be connected to resistance R ₉, R ₁₀, resistance R ₉One end passes through resistance R ₈Be connected on capacitor C ₄Negative pole on, resistance R ₁₀One terminates at transistor V ₁Base stage b on, transistor V ₁Emitter e and be connected to resistance R ₈, R ₉, be connected on the negative pole of bridge rectifier transistor V ₁Collector electrode c be connected on the positive pole of bridge rectifier.

During the utility model test, single-phase or three-phase alternating-current motor with identical voltage, multiple power connects the utility model respectively, from starting, idling carries, underload is to nominal load, continuous operation operation 24 hours, the result shows: electric current, the machine of alternating current motor shakes, temperature and noise all obviously descend, particularly the former electric current that needs of current ratio reduces by 25～45%, and starting, idling carry, underload and rated load operation and be not connected to the utility model and do not have any difference.No matter the utlity model has characteristics simple in structure, intelligent, that volume is little, easy installation, life-span are long, be factory, mine, harbour, airport, and still the hotel all can use as long as there is alternating current motor to drive the equipment that moves.

Description of drawings

Fig. 1 is circuit theory diagrams of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model will be further described, is sole mode of the present utility model but do not represent it.

Please read Fig. 1, the utility model is detected automatically by trigger control circuit and electric current and is connected on the civil power after identification circuit is connected in series.

Trigger control circuit one end is by rectifier diode VD ₁-VD ₄Constitute bridge rectifier, the other end is by resistance R ₁, R ₂, bidirectional trigger diode V ₂, resistance R ₃Serial connection is connected on the controlled stage G of bidirectional thyristor VT; Resistance R ₄With capacitor C ₂After the parallel connection, one terminates on the controlled stage G of bidirectional thyristor VT, and the other end is connected on the output T of bidirectional thyristor VT ₁On; Capacitor C ₁One terminates at bidirectional trigger diode V ₂With resistance R ₂The centre, the other end is connected on the output T of bidirectional thyristor VT ₁On; Resistance R ₅One terminates at capacitor C ₁, resistance R ₂, bidirectional trigger diode V ₂Common joint on, the other end is connected on the interchange end of bridge rectifier.Capacitor C ₂In circuit, play preventing that interference signal is defeated by the effect of bidirectional thyristor VT, in case false triggering, and can make the effect of pulse front edge steepness variation.Capacitor C ₂In circuit, play lotus root and close filter action.Resistance R ₄Can be used to regulate the power of output pulse.

Electric current detects identification circuit automatically and meets switching diode VD by 3 pin of transformer T ₅Positive pole, switching diode D ₅Negative pole connect resistance R ₇, be connected on capacitor C ₄Negative pole on, resistance R ₁₁Be connected on the two ends of 3 pin and 4 pin of transformer T; Resistance R ₆One terminating resistor R ₁₁, another termination capacitor C ₄Negative pole; Voltage stabilizing didoe VD ₆Negative pole be connected on capacitor C ₄Positive pole, receive switching diode VD simultaneously ₅Negative pole, voltage stabilizing didoe VD ₆Positive pole be connected to resistance R ₉, R ₁₀, resistance R ₉One end passes through resistance R ₈Be connected on capacitor C ₄Negative pole on, resistance R ₁₀One terminates at transistor V ₁Base stage b on, transistor V ₁Emitter e and be connected to resistance R ₈, R ₉, be connected on the negative pole of bridge rectifier transistor V ₁Collector electrode c be connected on the positive pole of bridge rectifier.

During the utility model work, connect alternating current, open switch S ₁, civil power passes through the input T of bidirectional thyristor VT through 1,2 pin of transformer T ₂, output T ₁With the alternating voltage Table V with link to each other, the alternating voltage Table V is dummy load, alternating voltage Table V one terminates at the output T of bidirectional thyristor VT ₁On the end of load motor M, the alternating voltage Table V other end connects on the zero line of civil power.Dummy load is the convenient effect of adjusting monitoring.Motor M is a load circuit, terminates at switch S by motor M one ₂On, the other end is connected on the output T of bidirectional thyristor VT ₁On, switch S ₂The other end is connected on the zero line of civil power.Load motor M is the real usefulness of watching.

Resistance R ₁, R ₂, R ₃, bridge rectifier, capacitor C ₁, resistance R ₅Provide correspondent voltage, by bidirectional trigger diode V ₂Trigger bidirectional thyristor VT conducting, this moment, the trigger output voltage phase shifting angle was less, and other components and parts are in static state in the circuit.Then, the S that closes a switch ₂, motor M starts running, and entire circuit enters operate as normal, at this moment, detects the size of transformer T primary coil by electric current, and sensor transformer T secondary coil is by switching diode VD in real time ₅, resistance R ₆, R ₇, R ₁₁, capacitor C ₄Detect the signal after discerning, by resistance R ₈, R ₉, R ₁₀, voltage stabilizing didoe VD ₆, bidirectional trigger diode V ₂Feed back to and trigger control section to change its trigger voltage and phase shifting angle, electric current is big, phase shifting angle is little, voltage is high; Electric current is little, phase shifting angle is big, voltage is low; Commute, motor M is in real time required to be institute's confession, and motor M rotating speed is constant, has reached the purpose of throttling.

If merge use with three circuit of the present utility model, connect A, B, C alternating current phase line respectively, remove zero line, can make three-phase alternating-current motor work as usual, restriction effect is better.

Claims

1, a kind of intelligentized AC electric electromechanics stream controller is characterized in that trigger control circuit and electric current detect automatically to be connected on the civil power after identification circuit is connected in series.

2, intelligentized AC electric electromechanics stream controller according to claim 1 is characterized in that described trigger control circuit one end is by rectifier diode VD ₁-VD ₄Constitute bridge rectifier, the other end is by resistance R ₁, R ₂, bidirectional trigger diode V ₂, resistance R ₃Serial connection is connected on the controlled stage G of bidirectional thyristor VT; Resistance R ₄With capacitor C ₂After the parallel connection, one terminates on the controlled stage G of bidirectional thyristor VT, and the other end is connected on the output T of bidirectional thyristor VT ₁On; Capacitor C ₁One terminates at bidirectional trigger diode V ₂With resistance R ₂The centre, the other end is connected on the output T of bidirectional thyristor VT ₁On; Resistance R ₅One terminates at capacitor C ₁, resistance R ₂, bidirectional trigger diode V ₂Common joint on, the other end is connected on the interchange end of bridge rectifier.

3, intelligentized AC electric electromechanics stream controller according to claim 1 is characterized in that described electric current detects identification circuit automatically and meets switching diode VD by 3 pin of transformer T ₅Positive pole, switching diode D ₅Negative pole connect resistance R ₇, be connected on capacitor C ₄Negative pole on, resistance R ₁₁Be connected on the two ends of 3 pin and 4 pin of transformer T, resistance R ₆One terminating resistor R ₁₁, another termination capacitor C ₄Negative pole; Voltage stabilizing didoe VD ₆Negative pole be connected on capacitor C ₄Positive pole, receive switching diode VD simultaneously ₅Negative pole, voltage stabilizing didoe VD ₆Positive pole be connected to resistance R ₉, R ₁₀, resistance R ₉One end passes through resistance R ₈Be connected on capacitor C ₄Negative pole on, resistance R ₁₀One terminates at transistor V ₁Base stage b on, transistor V ₁Emitter e and be connected to resistance R ₈, R ₉, be connected on the negative pole of bridge rectifier transistor V ₁Collector electrode c be connected on the positive pole of bridge rectifier.