CN2132337Y - Switch type sine wave power conversion device - Google Patents
Switch type sine wave power conversion device Download PDFInfo
- Publication number
- CN2132337Y CN2132337Y CN 92227148 CN92227148U CN2132337Y CN 2132337 Y CN2132337 Y CN 2132337Y CN 92227148 CN92227148 CN 92227148 CN 92227148 U CN92227148 U CN 92227148U CN 2132337 Y CN2132337 Y CN 2132337Y
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- circuit
- wave
- power
- sinusoidal
- tube
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 10
- 230000003321 amplification Effects 0.000 claims abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 230000002459 sustained effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 5
- 239000003381 stabilizer Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The utility model discloses a switch type sine wave power conversion device, the device have set up on ordinary electronic circuit's basis and penetrated along with H bridge type output circuit, and this circuit is managed T by the merit1T2Switching tube K1K2And (4) connecting. Power switching tube S by comparison tracking1Freewheel diode D1Inductor L1And a comparator A1Capacitor C1The voltage of the micro-strip saw tooth is obtained at the point B of the device and is supplied to an H-bridge output circuit, and the sine wave voltage is output through the amplification of the circuit. The device has light weight and small volume, and can be used as a working frequency voltage stabilizer, a working frequency voltage regulator, a variable frequency voltage stabilizer, a variable frequency voltage regulator, an uninterruptible power supply and the like.
Description
The utility model relates to the sinusoidal wave power conversion device of a kind of switching mode, belongs to electric power supply field.Be specially adapted to do uses such as power frequency pressurizer, power frequency voltage regulator, frequency conversion pressurizer, frequency conversion voltage adjusting device, uninterrupted power supply.
Along with the continuous development of electronics and computer technology, no matter be forceful electric power field or light current field, more and more higher to the requirement of power supply.Existing AC and DC supply unit is difficult to satisfy the requirement of the technology such as electronics, computer of develop rapidly, and Chinese patent CN1032607A discloses a kind of " comparison-tracking-amplifying type frequency converter " for this reason, is called for short the CTA frequency converter.This frequency converter can make cage type asynchronous machine obtain the quasi sine supply waveform, and is good for the motor speed adjusting result of use.But because the line characteristics that the event of CTA frequency converter has, limitation is bigger, and fails to solve the waveform intermodulation distortion.The OCL mode is adopted in its power output, and circuit uses positive-negative power supply, needs two covers relatively to follow the tracks of the self-oscillation power supply, and power circuit uses P type and two kinds of pipes of N type, and P type high-tension high-power pipe The market is poorly supplied is to implementing to bring certain difficulty.
The purpose of this utility model is that this is in order to overcome above-mentioned the deficiencies in the prior art part, a kind of unipolarity positive supply power supply is provided, and circuit is simplified, and frequency is independently adjusted, phase-locked, C/F control, adopt the high frequency alternation mode of boosting, the sinusoidal wave power conversion device of the switching mode that the scope of application is extensive.
The purpose of this utility model is achieved in that this device comprises low-frequency filter, current rectifying and wave filtering circuit, pulse-width modulation oscillator, high frequency boosts and rectification circuit, drive circuit, buffer circuit, sample circuit, sine-wave generator and phase lock circuitry, the sinusoidal amplification of half-wave and square wave drive circuit, this device adopts high frequency boost alternation mode, relatively tracking power supply switching tube S
1An end link to each other the other end and inductance coil L with the high frequency boost rectifying circuit
1Be connected inductance coil L
1The other end and power tube T
1, T
2Contact sustained diode mutually
1Be connected inductance coil L
1With switching tube S
1The centre, place on the O position.The other end of high frequency boost rectifying circuit is connected with the pulse-width modulation oscillator, and the pulse-width modulation oscillator is connected with rectifier filter, and rectifier filter links to each other with electrical network by low pass filter.This device comparator A
1Positive input be connected with sample circuit, the sinusoidal amplifying circuit of negative input and half-wave is connected, its output is contacted mutually with buffer circuit, drive circuit.This device is by power tube T
1, T
2, reversing switch pipe K
1, K
2Form and penetrate with H bridge-type output circuit, wherein reversing switch pipe K
1With power tube T
1Contact reversing switch pipe K mutually
2With power tube T
2Be in series.A sine-wave generator that this device is provided with and an end of phase lock circuitry are connected with the protection indicating circuit, and the other end is connected with sinusoidal amplification of half-wave and square wave drive circuit, and the square wave drive circuit is connected with the bridge-type output circuit.
The purpose of this utility model can also reach by following measure, switching tube K of the present utility model
2With power tube T
1Same-phase, switching tube K
1With power tube T
2Same-phase, T
1K
2With T
2K
1Phase difference is 180 ° between two groups.
Description of drawings:
Fig. 1 is an electric theory diagram of the present utility model.
Fig. 2 is a waveform schematic diagram of the present utility model.
Fig. 3 is the circuit theory schematic diagram of the utility model single phase alternating current (A.C.) pressurizer.
Fig. 4 is the utility model three phase sine power conversion device block diagram.
Embodiment describes the utility model in detail below in conjunction with accompanying drawing.
The electrical network power supply of Fig. 1 city enters current rectifying and wave filtering circuit through low pass filter, and low pass filter of the present utility model has the High-frequency Interference and the bidirectional filtering effect of the interior Switching Power Supply of device to civil power " pollution " that suppresses simultaneously to come from city's electrical network.Steady direct voltage after the rectification is supplied with the pulse-width modulation oscillator and is supplied with relatively tracking power supply switching tube S through the high frequency rectification of boosting
1, switching tube S
1An end be connected the other end and inductance coil L with the high frequency boost rectifying circuit
1Be connected.Relatively follow the tracks of oscillation power switching tube S
1Adopt ZGBT or VDMOS pipe.Drive circuit is connected with buffer circuit, and the signal of its drive circuit is through optic coupling element and comparator A
1Make it promptly to have finished the isolation of current potential, be controlled by comparator A again
1, comparator A
1The sampled signal of in-phase end is taken from B point export ratio dividing potential drop, and end of oppisite phase reference signal Vref takes from the ratio dividing potential drop of positive and negative half-wave drive signal (being positive polarity).B point of the present utility model promptly is the supply power voltage of power amplifier level, and this voltage is the half-wave sinusoidal voltage of little band saw tooth.Power amplifier level of the present utility model adopts a kind of special emitter-base bandgap grading output form, power tube T
1With reversing switch pipe K
1Contact power tube T mutually
2With reversing switch pipe K
2Contact T mutually
1K
1With T
2K
2Be in parallel to form and penetrate with H bridge-type output circuit.Power tube T
1, T
1Power supply be the little band saw tooth of forward unipolarity half-wave sinusoidal voltage, drive signal also is a forward unipolarity half-wave sinusoidal voltage, Fig. 2 VG
1, VG
2Power tube T
1, T
2Work in and penetrate with state.Reversing switch K
1, K
2Make the sinusoidal voltage of unipolar output voltage synthetic positive and negative alternation in load, K
2With T
1Same-phase, K
1With T
2Same-phase, T
1K
2With T
2K
1The phase phasic difference is 180 ° between two groups, and through penetrating with H bridge-type output circuit, making C, D two ends output voltage is sine voltage, adds to load through low pass filter.
VG among Fig. 2
1, VG
2Be respectively and be added in T
1, T
2The signal waveform of the utmost point, VG
3, VG
4Be respectively and be added in switching tube K
1K
2The driving square wave, VG wherein
1With VG
4Same-phase, VG
2With VG
3Same-phase, two groups differ 180 °, and VCD is connected to load for synthetic sinusoidal voltage.
Fig. 3 is the embodiment circuit theory diagrams of the utility model as the single phase alternating current (A.C.) pressurizer.The top of Fig. 3 is identical with Fig. 1.The standard sine signal that is produced by precision signal generator among Fig. 3 is through A
3After buffering was amplified, the one tunnel sent into positive and negative half-wave high-voltage amplifier, made to produce the about 30-350VP of the peak value forward unipolarity half-wave sinusoidal of (adjustable) continuously, sent into T respectively
1, T
2Grid.The other end adds to zero-crossing comparator A
4, it is synchronous fully that it is produced with sinusoidal signal, the square-wave signal of polarity correspondence, and remove control switch pipe K with this signal
1, K
2Break-make.A
5Be the positive half wave high-voltage amplifier, its output voltage adds to T
1Grid, A
6For negative half-wave high-voltage amplifier, also be forward unipolarity half-wave sine, its phase place and positive half wave differ 120 °, A
6Output voltage add to grid.W
2For output amplitude is adjusted potentiometer.K
1, K
2Adopt band to detect the IGBT pipe of the utmost point, its over-current signal is delivered to comparator A
2Finish overcurrent, defencive function with protective circuit.On the basis of Fig. 3, if with W
2Being located at inside (or be located at the outside, do among a small circle and regulate) carries out the technology fine setting and promptly becomes pressurizer.If with W
2Be located on the panel, do large-scale adjusting, promptly become voltage regulator.
Fig. 4 is the connection block diagram of three phase sine power conversion device, the same Fig. 1 of its circuit theory diagrams.
Operation principle of the present utility model is: produce reference signal by precision signal generator, through being amplified to the positive and negative half-wave voltage signal of enough amplitudes, add to power tube T at first respectively
1, T
2The control utmost point as the drive signal of this utmost point.This signal adds to comparator A simultaneously after the ratio dividing potential drop
1In-phase input end as reference signal Vref.Add to the inverting input of comparator from the sampled signal of oscillation power output.During the device energising, each element is in nought state, capacitor C
12 voltages that are B is ordered are zero, so the sampling voltage of taking out from B is zero.Along with progressively increasing of reference signal voltage, make the voltage of comparator normal phase input end be higher than the voltage of inverting input, so comparator output high level, through isolate, drive circuit makes comparison tracking power supply switching tube S
1Conducting, power supply is through L
1To capacitor C
1Charging raises B point current potential.When the voltage of inverting input is higher than the reference signal voltage of in-phase input end like this, comparator upset, output low level.Through isolation, drive circuit, make switching tube S equally
1Turn-off.S
1Have no progeny in the pass, inductance L
1And capacitor C
1Through power tube, load and sustained diode
1Discharge, B point current potential descends.Along with the charge and discharge of capacitor, formed the voltage of a little band saw tooth at the B point.When B point sampling voltage descended, reference signal voltage continued to rise by sinusoidal rule, when its voltage is higher than sampled signal once more, and comparator row upset again, S
1Conducting once more, circulation and so forth, just formed the half-wave sinusoidal voltage of little band saw tooth that B orders, this voltage and drive signal, power output three keeps synchronously in time, and all is controlled by derived reference signal, and the pipe consumption of power tube is reduced greatly, break through the forbidden zone (Fig. 2) of Class B amplifying circuit maximal efficiency 78.5%, thereby realized the function of positive wave power transfer.
Compared to existing technology, the utlity model has following advantage:
1, got rid of the Industrial Frequency Transformer of huge heaviness, saved in a large number silicon steel sheet and copper cash, device volume is little, and is in light weight.
2, output frequency is independent adjustable, can realize on request U/f control or and synchronized.
3, ultrapurification, antijamming capability is strong, and stability is good.
4, pure sinusoid power output, undistorted driving and Waveform Synthesis Technology.
5, all power electronic device all are operated on off state or critical saturation condition, and the pipe consumption is low, the efficient height.
6, the scope of application is extensive, and is simple in structure, cheap.
Claims (2)
1, the sinusoidal wave power conversion device of a kind of switching mode; comprise low pass filter, current rectifying and wave filtering circuit, pulse-width modulation oscillator, high frequency boosts and rectification circuit, drive circuit, sample circuit, protection and indicating circuit, sine-wave generator and phase lock circuitry, half-wave are sinusoidal amplifies and the square wave drive circuit, it is characterized in that:
A, comparison tracking power supply switching tube S
1An end be connected the other end and inductance coil L with the high frequency boost rectifying circuit
1Be connected inductance coil L
1End and power tube T
1, T
2Contact sustained diode mutually
1Be connected inductance coil L
1With switching tube S
1The centre place on 0, the other end of high frequency boost rectifying circuit is connected with the pulse-width modulation oscillator, rectifier filter links to each other with electrical network by low pass filter;
B, comparator A
1Positive input be connected with sample circuit, negative input and half-wave be sinusoidal to be amplified and the square wave drive circuit is connected, its output is contacted mutually with buffer circuit, drive circuit;
C, by power tube T
1, T
2Reversing switch pipe K
1, K
2Form and penetrate with H bridge-type output circuit, wherein reversing switch pipe K
1With power tube T
1Contact reversing switch pipe K mutually
2With power tube T
2Contact mutually;
One end of D, sine-wave generator and phase lock circuitry is connected with the protection indicating circuit, and sinusoidal amplification of the other end and half-wave and square wave drive circuit are connected, and the square wave drive circuit is connected with penetrating with H bridge-type output circuit.
2, the sinusoidal wave power conversion device of switching mode according to claim 1 is characterized in that switching tube K
2With power tube T
1Same-phase, switching tube K
1With power tube T
2Same-phase, T
1, K
2With T
2K
1Phase difference is 180 ° between two groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92227148 CN2132337Y (en) | 1992-07-15 | 1992-07-15 | Switch type sine wave power conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92227148 CN2132337Y (en) | 1992-07-15 | 1992-07-15 | Switch type sine wave power conversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2132337Y true CN2132337Y (en) | 1993-05-05 |
Family
ID=33771197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92227148 Expired - Fee Related CN2132337Y (en) | 1992-07-15 | 1992-07-15 | Switch type sine wave power conversion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2132337Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061486C (en) * | 1998-08-18 | 2001-01-31 | 北京先行新机电技术有限责任公司 | Wave-shape continuously changing method in power changing technology |
| CN100394343C (en) * | 2005-05-24 | 2008-06-11 | 重庆宇通仪器仪表有限公司 | Parameter type switch voltage-stablized power supply and its control circuit |
| CN102790522A (en) * | 2012-08-02 | 2012-11-21 | 西安华伟自控设备有限公司 | Realization method for high interference immunity power supply |
-
1992
- 1992-07-15 CN CN 92227148 patent/CN2132337Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061486C (en) * | 1998-08-18 | 2001-01-31 | 北京先行新机电技术有限责任公司 | Wave-shape continuously changing method in power changing technology |
| CN100394343C (en) * | 2005-05-24 | 2008-06-11 | 重庆宇通仪器仪表有限公司 | Parameter type switch voltage-stablized power supply and its control circuit |
| CN102790522A (en) * | 2012-08-02 | 2012-11-21 | 西安华伟自控设备有限公司 | Realization method for high interference immunity power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |