CN207200609U - Flow-regulating type electric motor electricity saver - Google Patents
Flow-regulating type electric motor electricity saver Download PDFInfo
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- CN207200609U CN207200609U CN201721264491.6U CN201721264491U CN207200609U CN 207200609 U CN207200609 U CN 207200609U CN 201721264491 U CN201721264491 U CN 201721264491U CN 207200609 U CN207200609 U CN 207200609U
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Abstract
A kind of flow-regulating type electric motor electricity saver, it includes phase detecting circuit, the current control circuit according to the phase signal adjust automatically motor current of detection；Described current control circuit, including triode T3, T4, diode D1, D2；Triode T3 emitter stage is connected with diode D1 anode, triode T4 emitter stage is connected with diode D2 anode, triode T3 colelctor electrode is connected with diode D2 negative electrode, triode T4 colelctor electrode is connected with diode D1 negative electrode, and triode T3 colelctor electrode and triode T4 colelctor electrode form the both ends being serially connected in motor MD current loop；The grounded emitter of triode T3 emitter stage and triode T4；This electricity-saving appliance does not use controllable silicon, but adjusts motor current by triode T3 and triode T4, makes that the terminal voltage waveform of motor is continuous, and harmonic components substantially reduce, and the pollution to power network is small；This electricity-saving appliance can economize on electricity 20% or so.
Description
Technical field
A kind of electric motor electricity saver is the utility model is related to, its electric current by adjusting motor, reaches economize on electricity purpose.
Background technology
Motor when less than rated load operation, its power factor reduce, motor it is less efficient, cause electric energy
Waste.To reach economize on electricity purpose, usual way is the terminal voltage for adjusting motor by controllable silicon according to the size of load,
Curve 3 in Fig. 2 for terminal voltage of motor after controllable silicon regulation waveform, by reduce terminal voltage of motor with improve power because
Number.Weak point using controllable silicon is to produce higher hamonic wave, pollutes power network；Influence for Eliminate highter harmonic is, it is necessary to set
Filter circuit, add the manufacturing cost of electricity-saving appliance.
Utility model content
In view of the shortcomings of the prior art, the utility model proposes a kind of flow-regulating type electric motor electricity saver, electricity-saving appliance output
Voltage waveform it is continuous, harmonic components substantially reduce.
The technical solution of the utility model is that a kind of flow-regulating type electric motor electricity saver, it includes phase detecting circuit, basis
The current control circuit of the phase signal adjust automatically motor current of detection and the start-up circuit for starting electric motor electricity saver；
Described phase detecting circuit includes current transformer LH, step-down transformer B1, current transformer LH primary line
Circle is serially connected in motor MD current loop, a termination triode T1 of current transformer LH secondary coil base stage, electricity
Another termination triode T2 of current transformer LH secondary coil base stage, resistance R1 termination current transformer LH secondary
The centre cap of coil, the resistance R1 other end are connected with the emitter stage of triode T1 emitter stage and triode T2；Decompression becomes
Depressor B1 primary coil is in parallel with mains supply, a termination triode T1 of step-down transformer B1 secondary coils colelctor electrode,
Another termination triode T2 of step-down transformer B1 secondary coils colelctor electrode, the centre cap of step-down transformer B1 secondary coils
It is connected by resistance R2 with triode T1 emitter stage with triode T2 emitter stage, the center of step-down transformer B1 secondary coils
Tap is grounded；
Described current control circuit, including triode T3, triode T4, diode D1, diode D2；Triode T3's
Emitter stage is connected with diode D1 anode, and triode T4 emitter stage is connected with diode D2 anode, triode T3 collection
Electrode is connected with diode D2 negative electrode, and triode T4 colelctor electrode is connected with diode D1 negative electrode, triode T3 current collection
Pole and triode T4 colelctor electrode form the both ends being serially connected in motor MD current loop；Triode T3 emitter stage and three
Pole pipe T4 grounded emitter；
Triode T1 emitter stage is connected by resistance R3 with potentiometer W1 one end, potentiometer W1 other end ground connection,
Potentiometer W1 is parallel with electric capacity C1, and potentiometer W1 cursor slide connects triode T3 base stage, potentiometer W1 cursor slide by resistance R4
Triode T4 base stage is connect by resistance R5.
Compared with prior art, this electricity-saving appliance does not use controllable silicon, but is adjusted by triode T3 and triode T4
Whole motor current, makes that the terminal voltage waveform of motor is continuous, and harmonic components substantially reduce, and the pollution to power network is small；This economize on electricity
Device can economize on electricity 20% or so.
Brief description of the drawings
Fig. 1 is schematic circuit of the present utility model.
Fig. 2 is the oscillogram of terminal voltage of motor.
Embodiment
In conjunction with brief description of the drawings specific embodiment of the present utility model.
A kind of flow-regulating type electric motor electricity saver, it includes phase detecting circuit, the phase signal adjust automatically according to detection
The current control circuit of motor current and the start-up circuit for starting electric motor electricity saver；
Described phase detecting circuit includes current transformer LH, step-down transformer B1, current transformer LH primary line
Circle is serially connected in motor MD current loop, a termination triode T1 of current transformer LH secondary coil base stage, electricity
Another termination triode T2 of current transformer LH secondary coil base stage, resistance R1 termination current transformer LH secondary
The centre cap of coil, the resistance R1 other end are connected with the emitter stage of triode T1 emitter stage and triode T2；Decompression becomes
Depressor B1 primary coil is in parallel with mains supply, a termination triode T1 of step-down transformer B1 secondary coils colelctor electrode,
Another termination triode T2 of step-down transformer B1 secondary coils colelctor electrode, the centre cap of step-down transformer B1 secondary coils
It is connected by resistance R2 with triode T1 emitter stage with triode T2 emitter stage, the center of step-down transformer B1 secondary coils
Tap is grounded.
The principle of phase detecting circuit is the voltage signal of current transformer LH secondary coil and motor MD electric current
The same phases of electric current ia in loop, step-down transformer B1 secondary coils and the same phases of line voltage ua；When current transformer LH secondary
The polarity of voltage of one end of coil and the polarity of voltage of one end of step-down transformer B1 secondary coils are all timing, triode T1 collection
Electrode has electric current generation, with should current transformer LH secondary coil the other end polarity of voltage and step-down transformer B1 times
The polarity of voltage of the other end of level coil is all timing, and triode T2 colelctor electrodes have electric current generation；Triode T1 collector currents
Phase signal voltage is formed on resistance R2 with triode T2 collector currents；When power factor reduces in motor operation course
（Load small）When, the phase difference increase between line voltage ua and electric current ia, phase signal voltage reduces, and vice versa.
Described current control circuit, including triode T3, triode T4, diode D1, diode D2；Triode T3's
Emitter stage is connected with diode D1 anode, and triode T4 emitter stage is connected with diode D2 anode, triode T3 collection
Electrode is connected with diode D2 negative electrode, and triode T4 colelctor electrode is connected with diode D1 negative electrode, triode T3 current collection
Pole and triode T4 colelctor electrode form the both ends in concatenation motor MD current loop；Triode T3 emitter stage and three poles
Pipe T4 grounded emitter；
Triode T1 emitter stage is connected by resistance R3 with potentiometer W1 one end, potentiometer W1 other end ground connection,
Potentiometer W1 is parallel with electric capacity C1, and potentiometer W1 cursor slide connects triode T3 base stage, potentiometer W1 cursor slide by resistance R4
Triode T4 base stage is connect by resistance R5.
The operation principle of current control circuit is that resistance R3 and electric capacity C1 are filtered to phase signal, and potentiometer W1 is used
Power factor during setting motor running, when motor operation course power factor reduces, phase signal voltage is correspondingly
Reduce, triode T3 and triode T4 collector current decline, i.e., the electric current of motor declines, and power factor improves.No matter
How power factor changes, and phase signal voltage can not possibly be close to zero, therefore triode T3 and triode T4 can not possibly end,
Triode T3 has electric current by the way that triode T4 has electric current to pass through motor terminal during negative half-cycle current during positive half cycle current
The waveform of voltage is continuous all the time.
Fig. 2 curve 1 is the waveform of motor terminal voltage of motor in rated load operation process（Power factor is most
Greatly）, now triode T3 and triode T4 be in saturation conduction state；Fig. 2 curve 2 is that motor is electric in small load running
The waveform of motivation terminal voltage, the waveform are the sine wave of peak clipping, and at this moment triode T3 is in amplification adjustment state；Fig. 2 curve 3
For the waveform of crossing terminal voltage of motor of the motor in small load running after controllable silicon is adjusted, terminal voltage of motor ripple has scarce
Mouthful, its higher harmonic component is larger；It is big close to the waveform of sinusoidal fundamental wave, higher harmonic component and the voltage waveform of curve 2 is continuous
It is big to reduce.
The start-up circuit of described electric motor electricity saver can be made up of a button, and a termination bridge rectifier QL of button is defeated
Go out the positive pole at end, another termination potentiometer W1 of button cursor slide；When starting motivation electricity-saving appliance, press button and then unclamp；
The moment that button is pressed, the positive pole of rectifier QL output ends provide base voltage to triode T3, turn on triode T3, electric current
Transformer has electric current by the way that phase detecting circuit produces phase signal, and electricity-saving appliance enters normal operating conditions after button unclamps.
The start-up circuit of described electric motor electricity saver includes diode D3, diode D4, electric capacity C2, optocoupler GE1, resistance
R6；Diode D3 anode is connected with one end of step-down transformer B1 secondary coils, diode D4 anode and step-down transformer
The other end connection of B1 secondary coils, diode D3 negative electrode are connected with diode D4 negative electrode, and diode D4 negative electrode passes through
Electric capacity C2 is connected with the anode of optocoupler GE1 light emitting diode, and the negative electrode of optocoupler GE1 light emitting diode is connect by resistance R6
Ground；The colelctor electrode of optocoupler GE1 phototriode connects diode D4 negative electrode, and the emitter stage of optocoupler GE1 phototriode connects
Potentiometer W1 cursor slide.
The principle of start-up circuit is that after electric motor electricity saver is powered, diode D3 and diode D4 are to step-down transformer B1
The alternating voltage of secondary coil carries out full-wave rectification, and the full-wave rectified voltage charges to electric capacity C2, optocoupler GE1 light emitting diode
In there is electric current to pass through, the conducting of optocoupler GE1 phototriode, base voltage, triode T3 are provided to triode T3, triode T4
Or triode T4 conductings, current transformer have electric current to pass through phase detecting circuit output phase signal voltage；When electric capacity C2 charges
In light emitting diode after end almost no current by the way that electric motor electricity saver enters normal operating conditions；Charge constant
Determined by the resistance of electric capacity C2 capacity and resistance R6, charge constant is more than 20 milliseconds.
The start-up circuit of described electric motor electricity saver also can be by diode D3, diode D4, electric capacity C2, button QA structures
Into；Diode D3 anode is connected with one end of step-down transformer B1 secondary coils, diode D4 anode and step-down transformer
The other end connection of B1 secondary coils, diode D3 negative electrode are connected with diode D4 negative electrode, and diode D4 negative electrode passes through
Electric capacity C2 is grounded, and button is serially connected between diode D4 negative electrode and potentiometer W1 cursor slide.After electric motor electricity saver is powered, press
Lower button provides base voltage to triode T3, triode T4, and then release button electric motor electricity saver enters normal work shape
State.
Claims (2)
1. a kind of flow-regulating type electric motor electricity saver, it includes phase detecting circuit, the phase signal adjust automatically electricity according to detection
The current control circuit of motivation electric current and the start-up circuit for starting electric motor electricity saver；
It is characterized in that described phase detecting circuit includes current transformer LH, step-down transformer B1, current transformer LH's is first
Level coil tandem is in motor MD current loop, a termination triode T1 of current transformer LH secondary coil base
Pole, another termination triode T2 of current transformer LH secondary coil base stage, a resistance R1 termination current transformer LH
Secondary coil centre cap, the resistance R1 other end is connected with the emitter stage of triode T1 emitter stage and triode T2；
Step-down transformer B1 primary coil is in parallel with mains supply, a termination triode T1 of step-down transformer B1 secondary coils collection
Electrode, another termination triode T2 of step-down transformer B1 secondary coils colelctor electrode, in step-down transformer B1 secondary coils
Heart tap is connected by resistance R2 with triode T1 emitter stage with triode T2 emitter stage, step-down transformer B1 secondary coils
Centre cap ground connection；
Described current control circuit, including triode T3, triode T4, diode D1, diode D2；Triode T3 transmitting
Pole is connected with diode D1 anode, and triode T4 emitter stage is connected with diode D2 anode, triode T3 colelctor electrode
Be connected with diode D2 negative electrode, triode T4 colelctor electrode is connected with diode D1 negative electrode, triode T3 colelctor electrode and
Triode T4 colelctor electrode forms the both ends being serially connected in motor MD current loop；Triode T3 emitter stage and triode
T4 grounded emitter；
Triode T1 emitter stage is connected by resistance R3 with potentiometer W1 one end, potentiometer W1 other end ground connection, current potential
Device W1 is parallel with electric capacity C1, and potentiometer W1 cursor slide connects triode T3 base stage by resistance R4, and potentiometer W1 cursor slide passes through
Resistance R5 connects triode T4 base stage.
2. flow-regulating type electric motor electricity saver according to claim 1, it is characterized in that, described start-up circuit includes diode
D3, diode D4, electric capacity C2, optocoupler GE1, resistance R6；Diode D3 anode and one end of step-down transformer B1 secondary coils
Connection, diode D4 anode are connected with the other end of step-down transformer B1 secondary coils, diode D3 negative electrode and diode
D4 negative electrode connection, diode D4 negative electrode are connected by electric capacity C2 with the anode of optocoupler GE1 light emitting diode, optocoupler GE1
The negative electrode of light emitting diode be grounded by resistance R6；The colelctor electrode of optocoupler GE1 phototriode connects diode D4 negative electrode,
The emitter stage of optocoupler GE1 phototriode connects potentiometer W1 cursor slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721264491.6U CN207200609U (en) | 2017-09-29 | 2017-09-29 | Flow-regulating type electric motor electricity saver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721264491.6U CN207200609U (en) | 2017-09-29 | 2017-09-29 | Flow-regulating type electric motor electricity saver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207200609U true CN207200609U (en) | 2018-04-06 |
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ID=61787342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721264491.6U Expired - Fee Related CN207200609U (en) | 2017-09-29 | 2017-09-29 | Flow-regulating type electric motor electricity saver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207200609U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425777A (en) * | 2017-09-29 | 2017-12-01 | 丁毅 | Flow-regulating type electric motor electricity saver |
-
2017
- 2017-09-29 CN CN201721264491.6U patent/CN207200609U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425777A (en) * | 2017-09-29 | 2017-12-01 | 丁毅 | Flow-regulating type electric motor electricity saver |
| CN107425777B (en) * | 2017-09-29 | 2023-12-01 | 汪文兴 | Current-regulating motor electricity-saving device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180406 Termination date: 20200929 |
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| CF01 | Termination of patent right due to non-payment of annual fee |