CN2096160U - Zero current trigger scr single phase power adjuster - Google Patents
Zero current trigger scr single phase power adjuster Download PDFInfo
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- CN2096160U CN2096160U CN 91207613 CN91207613U CN2096160U CN 2096160 U CN2096160 U CN 2096160U CN 91207613 CN91207613 CN 91207613 CN 91207613 U CN91207613 U CN 91207613U CN 2096160 U CN2096160 U CN 2096160U
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- Prior art keywords
- circuit
- phase power
- zero current
- single phase
- controllable silicon
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Abstract
The utility model discloses a zero current trigger SCR single phase power adjuster which can drive a resistive load, an inductive load and a capacitive load. The zero current trigger SCR single phase power adjuster is provided with a DC regulated circuit, a power regulating waveform generator, a current zero crossing synchronous tracking circuit, a power regulating control circuit, a dipulse trigger circuit and a triggering isolating circuit. The zero current trigger SCR single phase power adjuster is serially connected with the load to work and adopts a single line inlet-outlet mode, the zero current trigger SCR single phase power adjuster doesn't need to be provided with a DC stabilized voltage source, and the zero current trigger SCR single phase power adjuster can be widely used for the speed control, the light control and the automatic compensation of the power factor of the electric fan and the motor. The zero current trigger SCR single phase power adjuster has the advantages of small size and high precision, the zero current trigger SCR single phase power adjuster doesn't generate the radio frequency interference, and the zero current trigger SCR single phase power adjuster can be used in the combustible and explosive environment.
Description
The utility model is the single-phase power regulating eqiupment of zero current flip-over type controllable silicon that adopts integrated circuit and bidirectional triode thyristor to constitute about a kind of, is applicable to resistive, inductive, capacity load are carried out single-phase Power Regulation.
A typical prior art is that the multi-functional controllable silicon triggering of employing integrated circuit GY03 is a core, the inductive load zero that is equipped with other auxiliary circuit formation triggers the single-phase power regulating eqiupment of controllable silicon and (sees the utility application specification, number of patent application is CN87201177U), this power regulating eqiupment only is applicable to resistive, inductive load is carried out single-phase Power Regulation, be not suitable for capacity load, and this power regulating eqiupment need connect D.C. regulated power supply when working in addition.
The purpose of this utility model provides compared with prior art a kind of, resistive and inductive load both be applicable to, be applicable to capacity load again, circuit is more simple, circuit cost is more cheap, control precision is high, do not need to connect in addition D.C. regulated power supply, with the single-phase power regulating eqiupment of the simple zero current flip-over type of load wiring controllable silicon.
Task of the present utility model is to realize like this.The direct current regulation circuit of establishing in the power regulating eqiupment provides the galvanic current source for other circuit of power regulating eqiupment, the current over-zero synchronous follow-up circuit produces the synchronous floating voltage of current over-zero, the Power Regulation waveform generator produces the voltage waveform that a kind of change in voltage is controlled by the synchronous floating voltage of current over-zero, the synchronous floating voltage of this voltage waveform and current over-zero is sent into an input of Power Regulation control circuit through OR circuit, extraneous Power Regulation voltage is sent into another input of Power Regulation control circuit, under the effect of Power Regulation control circuit, by two trigger impulses and triggering buffer circuit, produce trigger impulse in load and silicon controlled current zero-crossing point, controllable silicon is subjected to triggering and conducting, load gets, if do not have trigger impulse at next current zero-crossing point, controllable silicon turn-offs, the load dead electricity.The trigger impulse amount that produces in the unit interval is controlled by extraneous Power Regulation control voltage, change extraneous Power Regulation control voltage, the trigger impulse amount that produces in the unit interval changes thereupon, controllable silicon ON time and the ratio of turn-off time have also just been changed, thereby the average voltage at load two ends is changed thereupon, finished the Power Regulation purpose that the utility model proposed.
This power regulating eqiupment technical scheme preferably is that the Power Regulation waveform generator adopts coincidence counter circuit and D/A change-over circuit to form, the synchronous floating voltage of current over-zero that the current over-zero synchronous follow-up circuit produces is sent into the pulse input end of coincidence counter, the output of coincidence counter forms the voltage waveform that a kind of change in voltage is controlled by the synchronous floating voltage of current over-zero through the D/A change-over circuit.
This power regulating eqiupment best techniques scheme is that the Power Regulation waveform generator adopts a kind of wave generator circuit and electronic switch to constitute.The voltage waveform of wave generator circuit output through the electronic switch that the synchronous floating voltage of current over-zero that produced by the current over-zero synchronous follow-up circuit is controlled, is exported the voltage waveform that a kind of change in voltage is controlled by the synchronous floating voltage of current over-zero.Electronic switch in the Power Regulation waveform generator can be that transistor constitutes, and also can be made of integrated circuit.
Establishing direct current regulation circuit in the power regulating eqiupment described in the utility model can be that transistor constitutes, and also can be that integrated circuit constitutes.
Triggering buffer circuit in the power regulating eqiupment described in the utility model can adopt the transformer isolation method, also can adopt the photoelectricity isolation method.
Characteristics of the present utility model are: power regulating eqiupment can carry out single-phase Power Regulation to resistive, inductive, capacity load, electric current by load is complete sine wave, this power regulating eqiupment and load tandem working, and in establish direct current regulation circuit, do not need to connect in addition D.C. regulated power supply, the wiring of power regulating eqiupment and load and AC power only needs two, volume is little, and circuit is simple, does not produce radio frequency interference, electrical network there are not public hazards, the reliability height.
Performance of the present utility model is existing to be illustrated one by one by an embodiment who preferentially selects for use and with reference to the following drawings.
Fig. 1 is the elementary diagram of single-phase power regulating eqiupment of this zero current flip-over type controllable silicon and load.I is this power regulating eqiupment among the figure, and II is load.
Fig. 2 is the operation principle block diagram of the single-phase power regulating eqiupment of this zero current flip-over type controllable silicon.A is the Power Regulation waveform generator among the figure, and b is the current over-zero synchronous follow-up circuit, and c is extraneous Power Regulation control voltage, and d is the Power Regulation controller, and e is the dipulse circuits for triggering, and f is for triggering buffer circuit, and g establishes direct current regulation circuit in being, h is a controllable silicon, and i is load.
Fig. 3 is the circuit theory diagrams of preferentially selecting embodiment for use of the single-phase power regulating eqiupment of this zero current flip-over type controllable silicon.
Fig. 4 is each point voltage oscillogram and the current waveform figure by load among Fig. 3.
Fig. 5 is that its output needs the circuit theory diagrams of external pull-up resistor when adopting open collector type integrated circuit.
［ 1 ］ is the single-phase power regulating eqiupment of zero current flip-over type controllable silicon among Fig. 3, and ［ 2 ］ are Wien-bridge oscillator, and ［ 3 ］ are bidirectional electronic switch, ［ 4 ］ be OR circuit, ［ 5 ］ are voltage comparator, and ［ 6 ］ are the trigger impulse transformer, ［ 7 ］ be bidirectional triode thyristor, ［ 8 ］ are load.R
9, R
11, C
5, C
6, D
5～D
20, in the DW pie graph 2 in establish direct current regulation circuit, D
5～D
20, DW, R
9, R
11, the current over-zero synchronous follow-up circuit in the controllable silicon ［ 7 ］, load ［ 8 ］ pie graph 2, Power Regulation waveform generator in Wien-bridge oscillator ［ 2 ］ and bidirectional electronic switch ［ 3 ］ pie graph 2, Power Regulation control circuit in voltage comparator ［ 5 ］ pie graph 2, C
4With the two trigger impulse circuit in the elementary pie graph 2 of trigger impulse transformer ［ 6 ］, the triggering buffer circuit in trigger impulse transformer ［ 6 ］ pie graph 2.
The course of work of circuit ［ 1 ］ is as follows: with circuit ［ 1 ］ with after load ［ 8 ］ is connected, the incoming transport power supply.Alternating voltage is through load ［ 8 ］ and R
11Step-down, D
7Rectification, R
9Current limliting, DW voltage stabilizing, C
5, C
6After the filtering, provide galvanic current to press to other circuit of power regulating eqiupment, at this moment, if there is zero current trigger impulse voltage in G point in ［ 1 ］, controllable silicon ［ 7 ］ is subjected to triggering and conducting, and alternating voltage passes through controllable silicon ［ 7 ］, D after load ［ 8 ］ step-down
9～D
20Pressure limiting, D
6Rectification, R
9Current limliting, DW voltage stabilizing, C
5, C
6Filtering, other circuit to power regulating eqiupment provides galvanic current to press equally.Therefore, no matter whether conducting of controllable silicon ［ 7 ］, the direct current regulation circuit of establishing in this power regulating eqiupment can provide galvanic current to press to other circuit of power regulating eqiupment.
The function of current over-zero synchronous follow-up circuit is to obtain and the complete synchronous synchronous floating voltage of current over-zero of load ［ 8 ］ electric current.Its course of work is as follows: when controllable silicon ［ 7 ］ not during conducting, alternating voltage is through load ［ 8 ］, R
11Step-down, D
7Rectification, D
5Every straight, R
9Current limliting, DW voltage stabilizing, the A point produces the voltage waveform that is synchronized with the positive half cycle of load ［ 8 ］ electric current in circuit ［ 1 ］; When controllable silicon ［ 7 ］ when being subjected to triggering and conducting, alternating voltage is after load ［ 8 ］ step-down, through controllable silicon ［ 7 ］, again through D
9～D
20Pressure limiting, D
6Rectification, D
5Every straight, R
9Current limliting, DW voltage stabilizing, also the A point produces the voltage waveform that is synchronized with the positive half cycle of load ［ 8 ］ electric current in circuit ［ 1 ］.No matter whether conducting of controllable silicon ［ 7 ］ all can be obtained with the voltage waveform of the positive half cycle strict synchronism of load current at the A point and (be seen Fig. 4 .U
A).
Wien-bridge oscillator ［ 2 ］ sine wave output in the circuit ［ 1 ］ (is seen Fig. 4 .U
B), regulate the average voltage that W can change the sine wave output of Wien-bridge oscillator ［ 2 ］.C point voltage in the circuit ［ 1 ］ is controlled by the A point voltage, when the A point voltage is high level, and bidirectional electronic switch ［ 3 ］ conducting, C point voltage and B point voltage change synchronously.When the A point voltage was low level, the C point voltage passed through capacitor C
3Keep, C point voltage waveform is that the voltage waveform that the synchronous floating voltage of current over-zero is controlled (is seen Fig. 4 .U
C).A point voltage and C point voltage (are seen Fig. 4 .U through OR circuit ［ 4 ］ at D point formation resultant voltage waveform in the circuit ［ 1 ］
D), D point electricity point (is seen Fig. 4 .U with extraneous Power Regulation control voltage
E) in voltage comparator ［ 5 ］, carrying out voltage ratio, voltage comparator ［ 5 ］ voltage pulse output waveform (is seen Fig. 4 .U
F).The pulse voltage that F is ordered in the circuit ［ 1 ］ is through C
4With the differential circuit of the elementary formation of pulse-triggered transformer ［ 6 ］, form the dipulse trigger voltage at the G point and (see Fig. 4 .U
G), after pulse triggering transformer ［ 6 ］ boosts and isolates, in current zero-crossing point triggering controllable silicon ［ 7 ］ conducting of controllable silicon ［ 7 ］, if the current zero-crossing point of controllable silicon ［ 7 ］ does not have trigger impulse, both make controllable silicon ［ 7 ］ conducting, at this moment, also become off state.
After controllable silicon ［ 7 ］ conducting, the alternating current positive-negative half-cycle is respectively through D
10～D
20, D
9The load ［ 8 ］ (seeing Fig. 4 .i) of flowing through.Because D
9～D
20With load ［ 8 ］ tandem working, make the positive and negative half cycle of voltage at load ［ 8 ］ two ends differ 5V～7V, this is for the not influence of operate as normal of the load ［ 8 ］ that is operated in 220V or above alternating voltage state.If the rated operational voltage of load is lower, can adopt transformer step-down method, the elementary replacement load ［ 8 ］ of step-down transformer, load inserts the secondary of transformer.
The flow through electric current of load ［ 8 ］, because controllable silicon ［ 7 ］ switch-on and-off makes the electric current in the load ［ 8 ］ also be the sine wave of switch-on and-off (seeing Fig. 4 .i), the extraneous Power Regulation voltage U of E point of change circuit ［ 1 ］
E, the make-to-break ratio of the electric current of the load of flowing through ［ 8 ］ changes thereupon, has changed unit interval internal burden ［ 8 ］ average current, has reached the Power Regulation purpose that the utility model proposed.W in the regulating circuit ［ 1 ］ can carry out the power fine setting to load ［ 8 ］.
Integrated circuit in the circuit ［ 1 ］ has an in-phase input end, and an inverting input and an output, output can be the open collector types, also can be not open ended of collector electrode.When adopting open collector type integrated circuit in the circuit ［ 1 ］, output connects and draws the resistance (see figure 5).
In the circuit ［ 1 ］, R
11Resistance provide by (AC supply voltage effective value/3～10) K Ω, optimum value is (AC supply voltage effective value/5) K Ω.R
11Too small, will cause R
11Excessive with voltage-stabiliser tube DW consumed power, R
11Excessive, the voltage stabilizing circuit of establishing in the circuit ［ 1 ］ can not satisfy the requirement of other circuit in the circuit ［ 1 ］.
In a typical application of circuit ［ 1 ］, R
1Be 100K Ω, R
2Be 47K Ω, R
3Be 47K Ω, R
4Be 300K Ω, R
5Be 100K Ω, R
6Be 300K Ω, R
7Be 470K Ω, R
8Be 470K Ω, R
9Be 27 Ω, R
10Be 2200K Ω, R
11Be 43K Ω, R
12Be 10 Ω, C
1Be 0.047 μ F, C
2Be 0.047 μ F, C
3Be 10 μ F, C
4Be 22 μ F, C
5Be 0.01 μ F, C
6Be 470 μ F, C
7Be that 0.047 μ F, W are 100K Ω adjustable resistance, T
1, T
2For 2SC9014, DW are 6V voltage-stabiliser tube, D
1～D
8Be 1N4148, D
9～D
20Be 1N4001, integrated circuit is LM324N, and the ratio of the primary and secondary number of turn of trigger impulse transformer ［ 6 ］ is 1:10, and controllable silicon ［ 7 ］ is the 1A400V bidirectional triode thyristor, and the rated current of load ［ 8 ］ is less than or equal to 1A, and AC power is 220V, 50HZ.
The utility model can carry out Power Regulation to resistive, inductive, capacity load when implementing.This power regulating eqiupment possesses good extraneous Power Regulation control voltage input interface, is beneficial to and all kinds of remote controls the program control circuit interface that waits.Can be used on the various light source control, various thermostatic control, single phase alternating current (A.C.) electric fan, the electric machine speed regulation that adopt single phase alternating current power supply, aspects such as circuit load auto power-factor compensating.
Claims (7)
1, the single-phase power regulating eqiupment of a kind of zero current flip-over type controllable silicon, comprise that bidirectional triode thyristor and integrated circuit trigger controller, it is characterized in that it is by the interior direct current regulation circuit of establishing, the Power Regulation waveform generator, the current over-zero synchronous follow-up circuit, the Power Regulation control circuit, the dipulse circuits for triggering trigger buffer circuit and constitute.
2,, it is characterized in that the Power Regulation waveform generator is constituted or is made of a kind of wave generator circuit and electronic switch by coincidence counter circuit and D/A change-over circuit according to the single-phase power regulating eqiupment of the described zero current flip-over type of claim 1 controllable silicon.
3, according to the single-phase power regulating eqiupment of the described zero current flip-over type of claim 2 controllable silicon, it is characterized in that what electronic switch was made of transistor or integrated circuit.
4,, it is characterized in that triggering buffer circuit and adopt transformer isolation or photoelectricity to isolate according to the single-phase power regulating eqiupment of the described zero current flip-over type of claim 1 controllable silicon.
5, according to the single-phase power regulating eqiupment of the described zero current flip-over type of claim 1 controllable silicon, establish direct current regulation circuit in it is characterized in that and constitute by transistor or integrated circuit.
6, according to the single-phase power regulating eqiupment of the described zero current flip-over type of claim 5 controllable silicon, it is characterized in that R
11Resistance be (AC supply voltage effective value/10) to (AC supply voltage effective value/3) K Ω.
7,, it is characterized in that the employing of Power Regulation control circuit has a positive input terminal, a negative input end, the integrated circuit of an output according to the single-phase power regulating eqiupment of the described zero current flip-over type of claim 1 controllable silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91207613 CN2096160U (en) | 1991-05-04 | 1991-05-04 | Zero current trigger scr single phase power adjuster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91207613 CN2096160U (en) | 1991-05-04 | 1991-05-04 | Zero current trigger scr single phase power adjuster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2096160U true CN2096160U (en) | 1992-02-12 |
Family
ID=4917010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91207613 Withdrawn CN2096160U (en) | 1991-05-04 | 1991-05-04 | Zero current trigger scr single phase power adjuster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2096160U (en) |
-
1991
- 1991-05-04 CN CN 91207613 patent/CN2096160U/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |