CN207184355U - A kind of reaction type inverter based on simple original paper - Google Patents
A kind of reaction type inverter based on simple original paper Download PDFInfo
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- CN207184355U CN207184355U CN201720740879.2U CN201720740879U CN207184355U CN 207184355 U CN207184355 U CN 207184355U CN 201720740879 U CN201720740879 U CN 201720740879U CN 207184355 U CN207184355 U CN 207184355U
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Abstract
The utility model discloses a kind of reaction type inverter based on simple original paper, including inversion module and power module, power module exports stable DC voltage to the input of inversion module；Inversion module includes full bridge inverter and transformer；The control signal input of full bridge inverter is connected with control circuit；Control circuit includes square-wave signal generation circuit and pulse-width modulation circuit；Square-wave signal generation circuit is using modified multi-resonant oscillating circuit output PWM ripples；The variable PWM ripple signals of pulse-width modulation circuit output duty cycle；Rectified feedback circuit is connected between the output end and control circuit of inversion module；Output is fed back on the transistor base in electric signal to pulse-width modulation circuit after the output signal of inversion module is carried out rectification sampling by rectified feedback circuit；Power module outlet is also associated with resettable fuse.The utility model design is simple, and easy to operate, depth of feedback is moderate；Output voltage is more stable, meets actual demand.
Description
Technical field
It the utility model is related to industrial electronic technical field, specially a kind of reaction type inverter based on simple original paper.
Background technology
In current PWM inverter, the volume weight for exporting transformer and alternating current filter account for major part.In order to
Reduce the volume weight of output transformer and alternating current filter, improve the power density of inverter, high frequency is still main hair
One of direction is opened up, the switching frequency of SPWM inverters is such as improved, using interior high frequency ring of AC Drive frequency converter etc..But inversion
The high frequency of device such as increases switching loss, electromagnetic interference increase there is also some problems.In addition, the kelvin effect of conductor with
Kindred effect, it is required for solving the problems such as parasitic parameter without part of the ESR and magnetic of electric capacity, wherein most important is exactly switching loss
Increase and electromagnetic interference problem.The maximally effective method for solving these problems has two, first, the speed of switching device is improved, two
It is inverter switching device is operated in Sofe Switch state with the mode of resonance or quasi-resonance.
PWM soft-switching inversion technologies are one of current most active research contents in power electronics field, are to realize electric power
The optimal path of electronic technology high frequency.Raising of his research to inverter performance and further genralrlization application, and to electricity
The development of power electronic technology, is all of great significance, and is one of the developing direction of current inverter.
Utility model content
In order to overcome the shortcomings of prior art, the utility model provides a kind of reaction type inversion based on simple original paper
Device, design is simple, and easy to operate, depth of feedback is moderate；Output voltage is more stable, meets actual demand.
Technical scheme is used by the utility model solves its technical problem：A kind of reaction type based on simple original paper is inverse
Become device, including inversion module and power module, the power module exports stable DC voltage to the input of inversion module；Institute
Stating inversion module includes full bridge inverter and transformer, the input input direct voltage of the full bridge inverter, full-bridge
Inverter circuit exports line voltage by output AC voltage signal to transformer, the transformer boost；The full-bridge inverting
The control signal input of circuit is connected with control circuit；The control circuit includes square-wave signal generation circuit and pulsewidth modulation
Circuit；The square-wave signal generation circuit is used using modified multi-resonant oscillating circuit output PWM ripples, the pulse-width modulation circuit
Triode, electric capacity and schmitt inverter composition；The variable PWM ripple signals of pulse-width modulation circuit output duty cycle；The inversion
Rectified feedback circuit is connected between the output end and control circuit of module；The rectified feedback circuit is by the output of inversion module
Output is fed back on the transistor base in electric signal to pulse-width modulation circuit after signal carries out rectification sampling.
As a kind of preferable technical scheme of the utility model, the full bridge inverter is used and is made up of four MOS pipes
Full-bridge circuit, MOSFET pipes selection FDP047N08, the wherein gate pole of metal-oxide-semiconductor are connected to the defeated of pulse-width modulation circuit by wire
Go out to hold load-modulate signal, the primary side of the grid and drain electrode Parallel opertation inversion AC signal to transformer of two groups of metal-oxide-semiconductors.
As a kind of preferable technical scheme of the utility model, the square-wave signal generation circuit is shaken using RC circuits composition
Device is swung, resistance R2 and resistance R4 both ends are connected after connecting diodes in parallel respectively with electric capacity C1, and R4 is used to control the charging interval,
R2 is used to control discharge time.
As a kind of preferable technical scheme of the utility model, schmitt inverter is connected in the pulse-width modulation circuit
The colelctor electrode of triode, the emitter stage of capacitance connection to triode, the base stage of triode is connected to rectification after two-stage circuit parallel connection
The output end of feedback circuit.
As a kind of preferable technical scheme of the utility model, the rectified feedback circuit uses the uncontrollable direct current of all-wave
Road, the circuit form full-wave circuit by four diodes, and output end is simultaneously connected with divider resistance, feedback letter is exported on divider resistance
Number.
As a kind of preferable technical scheme of the utility model, the power module uses UAR2412LD chips and 7805
Voltage stabilizing chip is composed in series, and UAR2412LD inputs 12V DC voltage to 7805 chips, 7805 chips output 5V burning voltages.
Compared with prior art, the beneficial effects of the utility model are：The utility model is effectively realized using simple Devices
The effect of feedback regulation, regulating effect can well reach the requirement of topic, it is simple in construction, easy realize, principle it is understandable.Door
Circuit builds circuit and square-wave, and rectification circuit and triode amplification are used as feedback circuit, the voltage fed back by partial pressure, control
Triode output current controls pulsewidth modulation, changes dutycycle, and so as to driving load, this circuit components is few, designs simple behaviour
Facilitate, depth of feedback is moderate；Output voltage is more stable, can realize the stable sinusoidal 210--230V voltages of output, meet real
Border demand.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
In figure：1- inversion modules；2- control circuits；3- rectified feedback circuits；4- power modules；5- resettable fuses；
101- full bridge inverters；102- transformers；201- square-wave signal generation circuits；202- pulse-width modulation circuits.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Embodiment：
As shown in figure 1, a kind of reaction type inverter based on simple original paper, including inversion module 1 and power module 4, institute
State power module and export stable DC voltage to the input of inversion module 1；The inversion module 1 includes full bridge inverter
101 and transformer 102, the input input direct voltage of the full bridge inverter 101, full bridge inverter 101 is by defeated
Go out ac voltage signal to transformer 102, the boosting of the transformer 102 output line voltage；The full bridge inverter 101
Control signal input is connected with control circuit 2；The control circuit 2 includes square-wave signal generation circuit 201 and pulsewidth modulation
Circuit 202；The square-wave signal generation circuit 201 is using modified multi-resonant oscillating circuit output PWM ripples, the pulsewidth modulation
Circuit 202 is using triode, electric capacity and schmitt inverter composition；Pulse-width modulation circuit (202) output duty cycle is variable
PWM ripple signals；Rectified feedback circuit 3 is connected between the output end and control circuit 2 of the inversion module 1；The rectification is anti-
Output feedback electric signal is into pulse-width modulation circuit 202 after the output signal of inversion module 1 is carried out rectification sampling by current feed circuit 3
On transistor base；The output end of power module 4 is also associated with resettable fuse 5.
The full bridge inverter 101 forms full-bridge circuit, the selection of MOSFET pipes using by four metal-oxide-semiconductors
FDP047N08, the MOSFET pressure voltages of such a model and resistance to flow valuve are larger.Using full-bridge circuit for half-bridge circuit it
Electric current want small one times, will be more safe and reliable using bridge circuit for powerful circuit；The gate pole of wherein metal-oxide-semiconductor passes through
Wire is connected to the output end load-modulate signal of pulse-width modulation circuit 202, and the grid and drain electrode Parallel opertation of two groups of metal-oxide-semiconductors are inverse
Become AC signal to the primary side of transformer 102；
Using RC circuits composition oscillator, resistance R2 and resistance R4 both ends connect the square-wave signal generation circuit 201 respectively
Connected after connecing diodes in parallel with electric capacity C1, R4 is used to control the charging interval, and R2 is used to control discharge time；Electricity is vibrated according to RC
The formula on road：T=2 π RC are understood, can be controlled when the charging interval of output square wave by R4, and R2 then controls discharge time, so
Can is by adjusting R2 and R4 resistance, to change the dutycycle of square wave.According to the formula of CMOS multi-resmators：T=
RCln4=l.4RC understands that the frequency of square wave can be changed by changing R2 and R4 resistance；
Schmitt inverter is connected to the colelctor electrode of triode, capacitance connection to three poles in the pulse-width modulation circuit 202
The emitter stage of pipe, the base stage of triode is connected to the output end of rectified feedback circuit 3 after two-stage circuit parallel connection；Rectified feedback returns
The voltage come is added on transistor base after partial pressure, controls triode electric current, so that triode can be equivalent to one
The resistance of individual adjustable resistance, the charging interval of electric capacity can be thus controlled, so that the change in duty cycle of square wave.Voltage subtracts
Small, dutycycle becomes big, and output voltage gos up, conversely, then reducing, so can make output voltage stabilization.And schmitt inverter
Dead time can be formed with time-lag action, prevents two pairs of pipes from simultaneously turning on；
The rectified feedback circuit 3 uses the uncontrollable DC circuit of all-wave, and the circuit forms all-wave electricity by four diodes
Road, output end are simultaneously connected with divider resistance, output feedback signal on divider resistance；By all-wave can not control rectifying circuit, will hand over
Stream signal becomes direct current signal, and after electric resistance partial pressure, next stage is inputted as feedback signal；The voltage that rectified feedback is returned passes through
It is added in after partial pressure on transistor base, controls triode electric current, so that triode can be equivalent to adjustable resistance
Resistance, the charging interval of electric capacity can be thus controlled, so that the change in duty cycle of square wave.Voltage reduces, and dutycycle becomes big,
Output voltage gos up, conversely, then reducing, so can make output voltage stabilization.And schmitt inverter has time-lag action can
To form dead time, prevent two pairs of pipes from simultaneously turning on.
The power module 4 is composed in series using UAR2412LD chips and 7805 voltage stabilizing chips, UAR2412LD inputs
12V DC voltage to 7805 chips, 7805 chips export 5V burning voltages；Power module, UAR2412LD chips and 7805 voltage stabilizings
Chip-in series, it is as shown below.Wherein 7805 pressure voltage 35v, maximum current 1.5A, input and output pressure difference can not be less than 2 volts,
And when actually using, governor circuit is all powered for 5V, and electric current only has 0.3A or so, complies fully with requirement；7805 three-terminal voltage-stabilizing IC
Internal circuit has overvoltage protection, overcurrent protection, overheat protective function, and this makes its performance very stable.Arrived by testing 12v
24V has a 0.04v pressure difference, and when power power-supply and control power supply are connected in into one piece, test has certain fluctuation, determines voltage
First pass through a UAR2412LD and change into 12V, then 5V is changed into by 7805, it is evident that voltage is more stable；
The utility model realizes 12V to 220V civil power inverter circuits, and the output voltage when input voltage and load change
It can keep stable, power output is more than 150W.Use the devices such as gate circuit and triode.Scheme is realized by full-bridge circuit
Inversion is raised to 220V by transformer again.In order to realize that output voltage can keep certain with load and the change of input voltage
Stabilization, using closed loop feedback control.Control circuit is mainly by generation circuit module, rectification circuit module, delay circuit module
Form.Square wave generation circuit produces the square wave of fixed frequency.Feedback voltage signal changes triode electric current, triode groundwork
In amplification region, electric current is constant, and adjustable to capacitance charging current size, voltage rising time slows down, schmitt inverter output electricity
Pressure delays to reach high level, so as to change dutycycle.The utility model effectively realizes feedback regulation using simple Devices
Effect, regulating effect can well reach the requirement of topic, and simple in construction, easy realization, principle are understandable.Gate circuit builds square wave
Circuit, rectification circuit and triode amplification are used as feedback circuit, the voltage fed back by partial pressure, control triode output electricity
Flow control pulsewidth modulation, change dutycycle, so as to driving load, this circuit components is few, and design simple operations are convenient, and feedback is deep
Spend moderate.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Claims (6)
- A kind of 1. reaction type inverter based on simple original paper, it is characterised in that：Including inversion module (1) and power module (4), The power module exports stable DC voltage to the input of inversion module (1)；The inversion module (1) includes full-bridge inverting Circuit (101) and transformer (102), the input input direct voltage of the full bridge inverter (101), full bridge inverter (101) output AC voltage signal to transformer (102), transformer (102) the boosting output line voltage are passed through；It is described complete The control signal input of bridge inverter circuit (101) is connected with control circuit (2)；The control circuit (2) includes square-wave signal Generation circuit (201) and pulse-width modulation circuit (202)；The square-wave signal generation circuit (201) uses modified multi-harmonic-oscillations Circuit output PWM ripples, the pulse-width modulation circuit (202) is using triode, electric capacity and schmitt inverter composition；Pulsewidth modulation The variable PWM ripple signals of circuit (202) output duty cycle；Connect between the output end and control circuit (2) of the inversion module (1) It is connected to rectified feedback circuit (3)；After the output signal of inversion module (1) is carried out rectification sampling by the rectified feedback circuit (3) On transistor base in output feedback electric signal to pulse-width modulation circuit (202)；Power module (4) output end is also connected with There is resettable fuse (5).
- A kind of 2. reaction type inverter based on simple original paper according to claim 1, it is characterised in that：The full-bridge is inverse Become circuit (101) and form full-bridge circuit using by four metal-oxide-semiconductors, MOSFET pipes select FDP047N08, wherein metal-oxide-semiconductor gate pole The output end load-modulate signal of pulse-width modulation circuit (202) is connected to by wire, the grid of two groups of metal-oxide-semiconductors and drain electrode are in parallel Inversion AC signal is exported to the primary side of transformer (102).
- A kind of 3. reaction type inverter based on simple original paper according to claim 1, it is characterised in that：The square wave letter Number generation circuit (201) using RC circuits composition oscillator, resistance R2 and resistance R4 both ends connect respectively after diodes in parallel with Electric capacity C1 connects, and R4 is used to control the charging interval, and R2 is used to control discharge time.
- A kind of 4. reaction type inverter based on simple original paper according to claim 1, it is characterised in that：The pulsewidth is adjusted Schmitt inverter is connected to the colelctor electrode of triode, the emitter stage of capacitance connection to triode, two-stage electricity in circuit (202) processed The base stage of triode is connected to the output end of rectified feedback circuit (3) after the parallel connection of road.
- A kind of 5. reaction type inverter based on simple original paper according to claim 1, it is characterised in that：The rectification is anti- Current feed circuit (3) uses the uncontrollable DC circuit of all-wave, and the circuit forms full-wave circuit by four diodes, and output end is simultaneously connected with Divider resistance, output feedback signal on divider resistance.
- A kind of 6. reaction type inverter based on simple original paper according to claim 1, it is characterised in that：The power supply mould Block (4) is composed in series using UAR2412LD chips and 7805 voltage stabilizing chips, and UAR2412LD inputs 12V DC voltage to 7805 cores Piece, 7805 chips output 5V burning voltages.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147321A (en) * | 2017-06-23 | 2017-09-08 | 安徽师范大学 | A kind of reaction type inverter based on simple original paper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107147321A (en) * | 2017-06-23 | 2017-09-08 | 安徽师范大学 | A kind of reaction type inverter based on simple original paper |
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Granted publication date: 20180403 Termination date: 20210623 |