CN102324854B - Voltage regulation circuit - Google Patents
Voltage regulation circuit Download PDFInfo
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- CN102324854B CN102324854B CN 201110282802 CN201110282802A CN102324854B CN 102324854 B CN102324854 B CN 102324854B CN 201110282802 CN201110282802 CN 201110282802 CN 201110282802 A CN201110282802 A CN 201110282802A CN 102324854 B CN102324854 B CN 102324854B
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- 230000033228 biological regulation Effects 0.000 title abstract description 8
- 230000008878 coupling Effects 0.000 claims abstract description 37
- 238000010168 coupling process Methods 0.000 claims abstract description 37
- 238000005859 coupling reaction Methods 0.000 claims abstract description 37
- 230000003287 optical effect Effects 0.000 claims abstract description 34
- 238000002955 isolation Methods 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims description 38
- 230000005669 field effect Effects 0.000 claims description 26
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 239000003381 stabilizer Substances 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
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Abstract
The invention provides a voltage regulation circuit which comprises a power supply circuit, a synchronous signal acquiring circuit, a microprocessor, a load, a waveform acquiring circuit, a first optical coupling isolation circuit, a first driving circuit, a first switching circuit, a second optical coupling isolation circuit, a second driving circuit and a second switching circuit, wherein the first optical coupling isolation circuit, the first driving circuit and the first switching circuit are sequentially connected in series; the second optical coupling isolation circuit, the second driving circuit and the second switching circuit are sequentially connected in series; the power supply circuit, the synchronous signal acquiring circuit and the waveform acquiring circuit are connected with the microprocessor; the microprocessor is respectively connected with the first optical coupling isolation circuit and the second optical coupling isolation circuit; the waveform acquiring circuit is also connected with the first switching circuit; and after being connected, the first switching circuit and the second switching circuit are connected in series with the load. Due to the adoption of the voltage regulation circuit, the problems of harmonic wave, high cost and difficulty in popularization in the prior art are solved, and the aims that an output waveform is symmetrical, no higher harmonic wave is generated, the voltage regulation circuit is simple to implement and a voltage can be subjected to electrodeless regulation are fulfilled.
Description
Technical field
The present invention relates to a kind of regulating circuit, especially a kind of regulating circuit that is applied to the alternating voltage electric power system belongs to the electrical engineering technical field.
Background technology
In the alternating voltage electric power system, present regulating circuit mainly contains controllable silicon phase control, the regulation and control of self coupling buck, adopts IGBT pulse-width modulation step-down regulating circuit by widespread.Yet these several pressure regulation methods all exist the some shortcomings part.
(1) controllable silicon phase control: adopt controllable silicon copped wave principle, by the angle of flow of control thyristor (controllable silicon), the sine voltage that electrical network is imported cuts away a part, thereby has reduced average value of output voltage, reaches the purpose of pressure control economize on electricity.This kind adjusting device can step-less adjustment to the voltage of illuminator, and speed is fast, and the precision height can be adjusted at times in real time, and pressure stabilization function is arranged.And have that volume is little, equipment is light, low cost and other advantages.But there is a major defect in this voltage regulating mode: because copped wave not only makes voltage wave shape distortion asymmetric, occur a large amount of harmonic waves simultaneously, cause the harmonic pollution to network system, address this problem though can install filter apparatus additional, cost is too high, and is uneconomical.
(2) self coupling buck regulation and control: it comprises fixed taps and regulates dual mode continuously.The difference of it and common transformer is that first and second lateral coil of autotransformer not only has the contact of magnetic, also has the contact of electricity, so its Capacity Ratio is less when the output voltage adjustable range is little, consumptive material is few, and cost is low, the efficient height.Its biggest advantage is the defective that has overcome controllable silicon chopper-type product generation harmonic wave, has realized the sinewave output of voltage, and 26S Proteasome Structure and Function is all very simple, and reliability is also than higher.But dual mode all exists defective separately, and the reduction voltage of fixed taps formula is fixed value, when voltage ripple of power network, can't play the protective effect to electric light source, also can reduce lamp life.And the adjustment type reducing transformer is because cost is higher continuously, and large-scale the popularization still has certain difficulty.
(3) adopt IGBT pulse-width modulation step-down: this kind method mainly frequency by control switch can steplessly be adjusted so that the effective value of output voltage reduces the purpose that reaches step-down, and output voltage waveforms is the sine wave of standard, but needs filtering.When control voltage is that a series of amplitudes equate and the unequal pulse of width, and according to certain rule each pulse duration is modulated, just can obtain corresponding output voltage.The waveform of circuit output this moment is the voltage waveform after being cut by high-frequency impulse, in order to obtain the sine wave of standard, and reduce high fdrequency component to the influence of power quality, the input and output side big inductance of series connection (also being referred to as smoothing reactor in power electronics) at circuit carries out flat ripple respectively.Though this kind method has solved controllable silicon phase control waveform output distortion asymmetry problem, has also avoided the high problem of self coupling step-down price, still has problems such as high order harmonic component.
Summary of the invention
Technical problem to be solved by this invention provides a kind of regulating circuit, carry out half period symmetry copped wave by the sine voltage to input, change voltage over zero, the angle of flow of control switch pipe realizes reducing the effective value of output voltage, reaches the purpose of step-down.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of regulating circuit, comprise power circuit, synchronizing signal acquisition cuicuit, microprocessor and load, also comprise the waveform acquisition circuit, first optical coupling isolation circuit that is connected in series successively, first drive circuit, first switching circuit, second optical coupling isolation circuit that is connected in series successively, second drive circuit, second switch circuit; Described power circuit, synchronizing signal acquisition cuicuit and waveform acquisition circuit are connected with microprocessor, and described microprocessor connects first optical coupling isolation circuit and second optical coupling isolation circuit respectively; Described waveform acquisition circuit also is connected with first switching circuit; Described first switching circuit is connected the back and is in series with load with the second switch circuit.
Aforesaid a kind of regulating circuit is characterized in that: described first optically coupled circuit comprises optical coupling isolator U5, resistance R 5 and resistance R 7; The input RD of the light-emitting diode of optical coupling isolator U5
0The I/O mouth that connects microprocessor, ground connection behind the output series resistance R5; The collector electrode of the triode of optical coupling isolator U5 connects power supply, ground connection behind the emitting stage series resistance R7.
Aforesaid a kind of regulating circuit is characterized in that: described first drive circuit comprises triode QQ1N1, capacitor C i1, the resistance R M1 that is in parallel and capacitor C J1, the RM3 that is in parallel and capacitor C J3; The collector electrode of described triode QQ1N1 connects resistance R M1, capacitor C J1, resistance R M3, capacitor C J3 respectively, emission collection ground connection, and base stage connects the emission collection of the triode of optical coupling isolator U5; Capacitor C i1 is connected with the collector and emitter of triode QQ1N1.
Aforesaid a kind of regulating circuit is characterized in that: described first switching circuit comprises field effect transistor MOSI1 and MOSI2; The source electrode of field effect transistor MOSI1 is connected with drain electrode with the source electrode of field effect transistor MOSI2 respectively with drain electrode; The grid of field effect transistor MOSI1 connects resistance R M1 and capacitor C J1, and the grid of field effect transistor MOSI2 connects resistance R M3 and capacitor C J3.
Aforesaid a kind of regulating circuit is characterized in that: described waveform acquisition circuit comprises resistance R ad1, capacitor C 11, voltage-stabiliser tube DD3; The end of resistance R ad1 connects the drain electrode of field effect transistor MOSI1 and the A/D end of microprocessor, and the other end connects the GND end of second switch circuit; It is in parallel with resistance R ad1 after described capacitor C 11 is connected with voltage-stabiliser tube DD3.
The invention has the beneficial effects as follows: by becoming the zero crossing chopping depressuring, specifically be to carry out half period symmetry copped wave by the sine voltage to input, change voltage over zero, the angle of flow of control switch realizes that the effective value of output voltage reduces, reach the purpose of step-down, this kind step-down mode advantage is: the output waveform symmetry, do not have high order harmonic component, realize simple and can carry out stepless adjustment to voltage.
Description of drawings
Fig. 1 is the regulating circuit theory diagram;
Fig. 2 is the main circuit connection diagram of regulating circuit;
Fig. 3 becomes zero crossing chopping depressuring control principle figure;
Fig. 4 is voltage-regulation principle figure;
Fig. 5 is the synchronization waveform schematic diagram;
Fig. 6 is that optocoupler produces the synchronizing signal schematic diagram;
Fig. 7 is that voltage stabilizing didoe produces the synchronizing signal schematic diagram.
Embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
As depicted in figs. 1 and 2, a kind of regulating circuit, comprise power circuit, synchronizing signal acquisition cuicuit, microprocessor and load, also comprise the waveform acquisition circuit, first optical coupling isolation circuit that is connected in series successively, first drive circuit, first switching circuit, second optical coupling isolation circuit that is connected in series successively, second drive circuit, second switch circuit; Described power circuit, synchronizing signal acquisition cuicuit and waveform acquisition circuit are connected with microprocessor, and described microprocessor connects first optical coupling isolation circuit and second optical coupling isolation circuit respectively; Described waveform acquisition circuit also is connected with first switching circuit; Described first switching circuit is connected the back and is in series with load with the second switch circuit.
Described first optically coupled circuit comprises optical coupling isolator U5, resistance R 5 and resistance R 7; The input RD of the light-emitting diode of optical coupling isolator U5
0The I/O mouth that connects microprocessor, ground connection behind the output series resistance R5; The collector electrode of the triode of optical coupling isolator U5 connects power supply, ground connection behind the emitting stage series resistance R7.
Described second optically coupled circuit comprises optical coupling isolator U6, resistance R 6 and resistance R 8; The input RD of the light-emitting diode of optical coupling isolator U6
1The I/O mouth that connects microprocessor, ground connection behind the output series resistance R6; The collector electrode of the triode of optical coupling isolator U6 connects power supply, ground connection behind the emitting stage series resistance R8.
Described first drive circuit comprises triode QQ1N1, capacitor C i1, the resistance R M1 that is in parallel and capacitor C J1, the RM3 that is in parallel and capacitor C J3; The collector electrode of described triode QQ1N1 connects resistance R M1, capacitor C J1, resistance R M3, capacitor C J3 respectively, emission collection ground connection, and base stage connects the emission collection of the triode of optical coupling isolator U5; Capacitor C i1 is connected with the collector and emitter of triode QQ1N1.
Described second drive circuit comprises triode QQ1N2, the resistance R M2 that is in parallel and capacitor C J2, the RM4 that is in parallel and capacitor C J4; The collector electrode of described triode QQ1N2 connects resistance R M2, capacitor C J2, resistance R M4, capacitor C J4 respectively, emission collection ground connection, and base stage connects the emission collection of the triode of optical coupling isolator U6.
Described first switching circuit comprises field effect transistor MOSI1 and MOSI2; The source electrode of field effect transistor MOSI1 is connected with drain electrode with the source electrode of field effect transistor MOSI2 respectively with drain electrode; The grid of field effect transistor MOSI1 connects resistance R M1 and capacitor C J1, and the grid of field effect transistor MOSI2 connects resistance R M3 and capacitor C J3.
Described second switch circuit comprises field effect transistor MOSO1 and MOSO2; The source electrode of field effect transistor MOSO1 is connected with drain electrode with the source electrode of field effect transistor MOSO2 respectively with drain electrode; The grid of field effect transistor MOSI1 connects resistance R M2 and capacitor C J2, and the grid of field effect transistor MOSO2 connects resistance R M4 and capacitor C J4.
Described waveform acquisition circuit comprises resistance R ad1, capacitor C 11, voltage-stabiliser tube DD3; The end of resistance R ad1 connects the drain electrode of field effect transistor MOSI1 and the A/D end of microprocessor, and the other end connects the drain electrode of the field effect transistor MOSO1 of second switch circuit; It is in parallel with resistance R ad1 after described capacitor C 11 is connected with voltage-stabiliser tube DD3.
Alternating voltage is received second switch circuit by waveform acquisition circuit Rd1 by the input inflow of first switching circuit behind first switching circuit, flow out through the second switch circuit output end and receive load end.
Become the schematic diagram of zero crossing chopping depressuring control as shown in Figure 3, the pair of switches pipe is connected on voltage input two ends, guarantee that switch is stable, control voltage is with synchronously sinusoidal wave, cycle is half of sine wave, by the voltage of sinusoidal wave zero crossing both sides is cut in the modulation of control voltage, shown in Fig. 4 dash area, just can obtain corresponding output voltage.Suppose that the line voltage effective value is U1, when the triggering angle in the circuit is α, through the later voltage effective value U0 of copped wave be:
The size of control triggering angle α can realize the variation of output voltage U o size.In order to prove that this technology is feasible in theory, carried out emulation with simulation software, the simulation calculation of the effective value by figure contrast and voltage can draw following conclusion: angle α is more big in triggering, and output voltage values is more low.
In the present invention, the triggering angle α in the MOSFET control voltage is that the natural commutation point with field effect transistor is the angle of measuring point.Natural commutation point depends on the AC supply voltage that is added in the field effect transistor two ends, therefore, in order to guarantee correct phase relation, realizes triggering synchronously control, must introduce and the strict synchronization basic standard signal of line voltage, i.e. synchronizing signal in circuits for triggering.Concrete waveform and angle corresponding relation are as shown in Figure 5.
As shown in Figure 5, synchronizing signal and trigger angle have certain corresponding relation, when capturing the rising edge of synchronizing signal, are benchmark constantly with this, after the angle [alpha] of moving be trigger impulse.Like this, guaranteed that identical phase relation is all arranged in each cycle.
The present invention has adopted two kinds of methods that produce synchronizing signal, is respectively optocoupler and produces synchronizing signal and voltage stabilizing didoe generation synchronizing signal, and specific implementation is as follows:
(1) optocoupler produces synchronizing signal
The synchronizing signal acquisition cuicuit with mains voltage signal, through current-limiting resistance, uses optocoupler to carry out voltage and isolates as shown in Figure 6, connects a pull-up resistor at output.At the positive half cycle of sinusoidal voltage signal, the light-emitting diode conducting, the optocoupler output low level is at negative half period output high level.The trailing edge of optocoupler output signal is exactly the positive zero passage moment of synchronizing signal;
(2) voltage stabilizing didoe produces synchronizing signal
Circuit for generating synchronous signals is connected AC power after diode DD2 and the voltage-stabiliser tube DD1 parallel connection as shown in Figure 7, also is parallel with a filter capacitor CD1 on the voltage-stabiliser tube DD1.When the L end was in positive half cycle, diode DD2 ended, and DD1 plays pressure stabilization function, the INT end is constant voltage (high level), when the L end is in negative half period, and diode DD2 conducting, the INT end links to each other (low level) with ground, and INT brings out existing square wave, i.e. synchronizing signal in one-period thereby make.And by filtering capacitor, prevent that external interference from exerting an influence to INT.
In sum, a kind of regulating circuit provided by the invention, by becoming the zero crossing chopping depressuring, specifically be to carry out half period symmetry copped wave by the sine voltage to input, change voltage over zero, the angle of flow of control switch realizes that the effective value of output voltage reduces, and reaches the purpose of step-down, and this kind step-down mode advantage is: the output waveform symmetry, do not have high order harmonic component, realize simple and can carry out stepless adjustment to voltage.
Claims (3)
1. regulating circuit, comprise power circuit, synchronizing signal acquisition cuicuit, microprocessor and load, also comprise the waveform acquisition circuit, first optical coupling isolation circuit that is connected in series successively, first drive circuit, first switching circuit, second optical coupling isolation circuit that is connected in series successively, second drive circuit, second switch circuit; Described power circuit, synchronizing signal acquisition cuicuit and waveform acquisition circuit are connected with microprocessor, and described microprocessor connects first optical coupling isolation circuit and second optical coupling isolation circuit respectively; Described waveform acquisition circuit also is connected with first switching circuit; Described first switching circuit is connected the back and is in series with load with the second switch circuit, described first optically coupled circuit comprises optical coupling isolator U5, resistance R 5 and resistance R 7; The input RD of the light-emitting diode of optical coupling isolator U5
0The I/O mouth that connects microprocessor, ground connection behind the output series resistance R5; The collector electrode of the triode of optical coupling isolator U5 connects power supply, ground connection behind the emitting stage series resistance R7 is characterized in that: described first drive circuit comprises triode QQ1N1, capacitor C i1, the resistance R M1 that is in parallel and capacitor C J1, the RM3 that is in parallel and capacitor C J3; The collector electrode of described triode QQ1N1 connects resistance R M1, capacitor C J1, resistance R M3, capacitor C J3 respectively, emission collection ground connection, and base stage connects the emission collection of the triode of optical coupling isolator U5; Capacitor C i1 is connected with the collector and emitter of triode QQ1N1.
2. a kind of regulating circuit according to claim 1, it is characterized in that: described first switching circuit comprises field effect transistor MOSI1 and MOSI2; The source electrode of field effect transistor MOSI1 is connected with drain electrode with the source electrode of field effect transistor MOSI2 respectively with drain electrode; The grid of field effect transistor MOSI1 connects resistance R M1 and capacitor C J1, and the grid of field effect transistor MOSI2 connects resistance R M3 and capacitor C J3.
3. a kind of regulating circuit according to claim 2, it is characterized in that: described waveform acquisition circuit comprises resistance R ad1, capacitor C 11, voltage-stabiliser tube DD3; The end of resistance R ad1 connects the drain electrode of field effect transistor MOSI1 and the A/D end of microprocessor, and the other end connects the GND end of second switch circuit; It is in parallel with resistance R ad1 after described capacitor C 11 is connected with voltage-stabiliser tube DD3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110282802 CN102324854B (en) | 2011-09-22 | 2011-09-22 | Voltage regulation circuit |
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| CN 201110282802 CN102324854B (en) | 2011-09-22 | 2011-09-22 | Voltage regulation circuit |
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| CN102324854A CN102324854A (en) | 2012-01-18 |
| CN102324854B true CN102324854B (en) | 2013-10-02 |
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| CN102780403A (en) * | 2012-08-22 | 2012-11-14 | 杭州龙科电子有限公司 | Single-phase trailing edge chopper voltage regulator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3688033B2 (en) * | 1995-10-18 | 2005-08-24 | 株式会社オーシーシー | Optical transmission terminal equipment |
| CN201717816U (en) * | 2009-10-30 | 2011-01-19 | 丹阳市利普机械配件有限公司 | Electromotor pressure reduction electricity-saving controller |
| CN201837859U (en) * | 2010-09-14 | 2011-05-18 | 镇江市旋丽电器有限公司 | Smart glass controller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7635956B2 (en) * | 2006-01-06 | 2009-12-22 | Active-Semi, Inc. | Primary side constant output voltage controller |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3688033B2 (en) * | 1995-10-18 | 2005-08-24 | 株式会社オーシーシー | Optical transmission terminal equipment |
| CN201717816U (en) * | 2009-10-30 | 2011-01-19 | 丹阳市利普机械配件有限公司 | Electromotor pressure reduction electricity-saving controller |
| CN201837859U (en) * | 2010-09-14 | 2011-05-18 | 镇江市旋丽电器有限公司 | Smart glass controller |
Non-Patent Citations (1)
| Title |
|---|
| JP特许第3688033号B2 2005.08.24 |
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Effective date of registration: 20160506 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: JIAOZUO POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER Co. Patentee after: JIAOZUO GUANGYUAN TECHNOLOGY DEVELOPMENT CO.,LTD. Address before: 213022 Changzhou Jin Ling North Road, Jiangsu, No. 200 Patentee before: CHANGZHOU CAMPUS OF HOHAI University |
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