CN206595913U - Realize inversion alternating current adjustable inverter in high precision - Google Patents
Realize inversion alternating current adjustable inverter in high precision Download PDFInfo
- Publication number
- CN206595913U CN206595913U CN201720287768.0U CN201720287768U CN206595913U CN 206595913 U CN206595913 U CN 206595913U CN 201720287768 U CN201720287768 U CN 201720287768U CN 206595913 U CN206595913 U CN 206595913U
- Authority
- CN
- China
- Prior art keywords
- output
- excess
- current
- circuit module
- inversion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
Inversion alternating current adjustable inverter in high precision is realized the utility model discloses one kind, the inverter includes primary rectifier circuit module, DC DC circuit modules, inversion full-bridge circuit module, LC filtration modules, excess-current excess-temperature protection module, AD sampling modules, control module, inverter DC output end.The utility model by PWM duty cycle a change value and SPWM Sine Modulateds by the inverter and by combining the change for coming together to realize alternating voltage amplitude than m, PWM duty cycle a is the regulation of wide range gear, SPWM Sine Modulateds are small regulation than m, realize that output AC voltage exports wide scope and minor adjustments realize output AC voltage high accuracy by wide range regulation, so as to realize inversion alternating voltage wide scope and high accuracy, SPWM methods are made to realize frequency and phase high accuracy.
Description
Technical field
The utility model belongs to electric and electronic technical field, more particularly to realizes the adjustable inversion in high precision of inversion alternating current
Device.
Background technology
The general principle of inversion is that direct current is become into exchange, and general ac output voltage, frequency etc. is fixed, be mostly used for simultaneously
Enter power network, such as solar grid-connected inverter.It is another it is wide variety of in industry be exactly variable ac output voltage, frequency, phase
The variable inverter in position, in order to which conveniently, this kind of inverter is substantially becomes direct current by civil power, becomes by direct current in view of power supply
Into variable exchange.Variable output will be difficult to fix output in implementation method, typically all need MCU, FPGA or special integrated
IC is realized, reaches that numeral is adjustable.
In order to realize that the variable general common methods such as output voltage, frequency are SPWM (Sinusoidal Pulse Width
Modulation Sinusoidal Pulse Width Modulations), SPWM points are unipolarity and bipolarity, either unipolarity or bipolarity electricity
Road, is all finally by controlling SPWM amplitude, frequency and phase to realize output voltage, frequency and phase variable.
Prior art realizes that inversion output is variable using SPWM, and the voltage magnitude excursion of single SPWM controls is small, main
It is that SPWM is sine pulse width modulation (PWM) to want reason, is equivalent to each PWM and realizes sinusoidal each point, if wanting sinusoidal magnitude value variable, is equivalent to every
Individual point needs equal diminish.
PWM is that significant level accounting is exported within the fixed cycle, and such as accounting is 50%, then is output as the 0.5 of input direct-current
Times.Realize that 0~250V is variable if desired, minimal adjustment voltage is 0.1, then be now equivalent to each adjustable range for 1~
250/0.1, i.e., 1~2500, if sinusoidal need 1000 points to constitute, PWM adjustable range is 1~2500000, typically
The carrier frequency of SPWM circuits is 30KHz~1KHz, the μ s of cycle 33~1ms is converted into, according to the single regulating time of above-mentioned reckoning
For 33 μ s~1ms/2500000 ≈ 132ps~400ps, it is seen that regulation minimum time is ps ranks, but for general common
Pliotron MOSFET, IGBT etc. are μ s ranks, ns ranks be all it is rarely found, ps ranks almost do not have then.And it is real
The adjustable digital device of existing ps ranks is also rare, therefore SPWM methods are can not to realize that voltage wide range is exported.
Utility model content
In view of this, it is necessary in view of the above-mentioned problems, providing one kind realizes inversion alternating current adjustable inversion dress in high precision
Put.
The utility model, which is adopted the following technical scheme that, to solve the above problems：
One kind realizes inversion alternating current adjustable inverter in high precision, including primary rectifier circuit module, DC-DC circuit
Module, inversion full-bridge circuit module, LC filtration modules, excess-current excess-temperature protection module, AD sampling modules, control module, inversion dress
Put DC output end；
The one end of the primary rectifier circuit module respectively with 220V civil powers, DC-DC circuit module is electrically connected, and is used for
220V civil powers are made into direct current, and carry out power-factor correction, the direct current after primary rectifier is then supplied to DC-DC electricity
Road module；
The other end of the DC-DC circuit module and one end of inversion full-bridge circuit module are electrically connected, DC-DC circuit
Module is used to press by pwm signal dutycycle exporting change and galvanic current and be supplied to inversion full-bridge circuit module；
The other end of the inversion full-bridge circuit module is connected with one end of LC filtration modules, and inversion full-bridge circuit module is used
AC signal is converted into the DC voltage for exporting PWM controls, and the AC signal makes the exchange of output by SPWM controls
Amplitude, frequency and phase can be controllable in high precision；
The other end, the inverter ac output end of one end of the excess-current excess-temperature protection module respectively with LC filtration modules
It is electrically connected, excess-current excess-temperature protection module is used to provide excessively stream, overheat protector to inverter and load, for detecting direct current
Circuit excessively stream, excess temperature situation and by detection information be transferred to the control module, for by the DC power transmission after processing to inverse
Become device DC output end；
The LC filtration modules are used to the AC signal of output being filtered, and make the sinusoidal signal of output smooth；
The inverter DC output end and the other end of excess-current excess-temperature protection module are electrically connected, for as inverse
Become the delivery outlet of device；
The control module is carried out with DC-DC circuit module, inversion full-bridge circuit module, excess-current excess-temperature protection module respectively
Electrical connection, inversion full-bridge circuit module is given for exporting SPWM signals, and the DC-DC circuit module is given for output pwm signal,
Detection information for reading excess-current excess-temperature protection module；
The AD sampling modules are electrically connected with inverter DC output end, control module respectively, inverse for reading
Become the electric current and voltage signal of device DC output end and be transferred to control module.
Further, the circuit of the primary rectifier circuit module is pfc circuit and buck reduction voltage circuits；
The circuit of the DC-DC circuit module is voltage raising and reducing circuit.
Further, the excess-current excess-temperature protection module detects electric current and then disconnects direct current output higher than setting value；
The temperature of switching tube then disconnects direct current output higher than setting value on the excess-current excess-temperature protection module detection circuit.
Further, the excess-current excess-temperature protection module is disconnected after direct current output, is regularly briefly opened up output, once inspection
Excessively stream is measured, direct current output is again off, constantly cyclically of short duration output, detection and excessively stream disconnect output, until output direct current
Electric current turns on direct current output less than setting value；
Further, the control module includes central control unit, sampling unit, state detection unit, SPWM＆PWM
Output control unit；
The central control unit is carried out with sampling unit, state detection unit, SPWM＆PWM output control units respectively
Electrical connection, for the data for handling sampling unit, state detection unit is gathered, for controlling SPWM＆PWM output control units
Export SPWM or pwm signal；
The sampling unit is electrically connected with AD sampling modules, electric current and voltage signal for reading AD sampling modules
Data；
The state detection unit is electrically connected with excess-current excess-temperature protection module, for reading excess-current excess-temperature protection module
Excess-current excess-temperature signal data；
The SPWM＆PWM output control units are electrically connected with inversion full-bridge circuit module, DC-DC circuit module respectively
Connect, give inversion full-bridge circuit module for exporting SPWM signals, DC-DC circuit module is given for output pwm signal.
Further, the controller is the controller using MCU or FPGA or DSP or ASIC；
The controller will calculate obtained alternating-current parameter by PID regulations and be adjusted, and obtain needing regulation parameter, then
Regulation parameter is converted into PWM and SPWM control signal；
The controller calculates real-time output current by algorithm, for show and judge in advance electric current whether excessively stream.
The utility model includes primary rectifier circuit module, DC-DC circuit module, inversion full-bridge circuit mould by one kind
Block, LC filtration modules, excess-current excess-temperature protection module, AD sampling modules, control module, the inversion dress of inverter DC output end
Put and come together to realize changing for alternating voltage amplitude by the way that PWM duty cycle a change value and SPWM Sine Modulateds are combined than m
Become, PWM duty cycle a is the regulation of wide range gear, SPWM Sine Modulateds are small regulation than m, are included inside wide range
Minor adjustments are carried out again, so as to realize inversion alternating voltage wide scope and high accuracy, SPWM methods is realized that frequency and phase are high
Precision.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation that the utility model realizes inversion alternating current adjustable inverter in high precision；
Fig. 2 is the flow chart for realizing inversion alternating current adjustable method in high precision that the utility model is related to；
Fig. 3 is the regulation SPWM Sine Modulateds AC wave shape figure more corresponding with PWM duty cycle a than m that the utility model is related to；
Fig. 4 realizes inversion alternating current adjustable circuit theory diagrams in high precision for what the utility model was related to.
Embodiment
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with accompanying drawing and
The technical solution of the utility model is described in detail specific embodiment.It is pointed out that described embodiment is only
Only it is a part of embodiment of the utility model, rather than whole embodiments, based on the embodiment in the utility model, this area
The every other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to the utility model
The scope of protection.
As shown in figure 1, one kind realizes inversion alternating current adjustable inverter in high precision, it is characterised in that including primary
Rectification circuit module, DC-DC circuit module, inversion full-bridge circuit module, LC filtration modules, excess-current excess-temperature protection module, AD are adopted
Egf block, control module, inverter DC output end；
The one end of the primary rectifier circuit module respectively with 220V civil powers, DC-DC circuit module is electrically connected, and is used for
220V civil powers are transformed into direct current, and carry out power-factor correction, the direct current after primary rectifier is then supplied to DC-DC
Circuit module；
The other end of the DC-DC circuit module and one end of inversion full-bridge circuit module are electrically connected, DC-DC circuit
Module is used to press by the dutycycle exporting change and galvanic current of pwm signal and be supplied to inversion full-bridge circuit module；
The other end of the inversion full-bridge circuit module is connected with one end of LC filtration modules, and inversion full-bridge circuit module is used
AC signal is converted into the DC voltage for exporting PWM controls, and the AC signal makes the exchange of output by SPWM controls
Amplitude, frequency and phase can be controllable in high precision；
The other end, the inverter DC output end of one end of the excess-current excess-temperature protection module respectively with LC filtration modules
It is electrically connected, excess-current excess-temperature protection module is used to provide excessively stream, overheat protector to inverter and load, for detecting direct current
Circuit excessively stream, excess temperature situation and by detection information be transferred to the control module, for by the DC power transmission after processing to inverse
Become device DC output end；
The LC filtration modules are used to the AC signal of output being filtered, and mainly filter out harmonic wave, make the sine of output
Signal smoothing；
The inverter DC output end and the other end of excess-current excess-temperature protection module are electrically connected, for as inverse
Become the delivery outlet of device；
The control module is carried out with DC-DC circuit module, inversion full-bridge circuit module, excess-current excess-temperature protection module respectively
Electrical connection, inversion full-bridge circuit module is given for exporting SPWM signals, and the DC-DC circuit module is given for output pwm signal,
Detection information for reading excess-current excess-temperature protection module；
The AD sampling modules are electrically connected with inverter DC output end, control module respectively, inverse for reading
Become the electric current and voltage signal of device DC output end and be transferred to control module；
The circuit of the primary rectifier circuit module is pfc circuit and buck reduction voltage circuits；
The circuit of the DC-DC circuit module is voltage raising and reducing circuit, actually according to input and can export DC voltage
It is required that the corresponding circuit of selection；
The excess-current excess-temperature protection module detects electric current and then disconnects direct current output higher than setting value；
The temperature of switching tube then disconnects direct current output higher than setting value on the excess-current excess-temperature protection module detection circuit, prevents
Only temperature is too high burns out switching tube, for protection switch pipe；
The excess-current excess-temperature protection module is disconnected after direct current output, is regularly briefly opened up output, once excessively stream is detected,
Direct current output is again off, constantly cyclically of short duration output, detection and excessively stream disconnect output, is set until output DC current is less than
Definite value turns on direct current output；
The control module includes central control unit, sampling unit, state detection unit, SPWM＆PWM output control lists
Member；
The central control unit is carried out with sampling unit, state detection unit, SPWM＆PWM output control units respectively
Electrical connection, for the data for handling sampling unit, state detection unit is gathered, for controlling SPWM＆PWM output control units
Export SPWM or pwm signal；
The sampling unit is electrically connected with AD sampling modules, electric current and voltage signal for reading AD sampling modules
Data；
The state detection unit is electrically connected with excess-current excess-temperature protection module, for reading excess-current excess-temperature protection module
Excess-current excess-temperature signal data；
The SPWM＆PWM output control units are electrically connected with inversion full-bridge circuit module, DC-DC circuit module respectively
Connect, give inversion full-bridge circuit module for exporting SPWM signals, DC-DC circuit module is given for output pwm signal；
The controller is the controller using MCU or FPGA or DSP or ASIC；
The controller will calculate obtained alternating-current parameter by PID regulations and be adjusted, and obtain needing regulation parameter, then
Regulation parameter is converted into PWM and SPWM control signal；
The controller calculates real-time output current by algorithm, for show and judge in advance electric current whether excessively stream.
It is a kind of to realize that inversion alternating current all adjustable methods of high accuracy are applied to all inverters, for example：It is grid-connected
Inverter, experiment test inverter, inversion source etc..
A kind of principle for realizing inversion alternating current adjustable method in high precision is described as follows：
As shown in figure 4, the DC-DC conversion circuit based on PWM can need to be selected according to output voltage, if desired
Output DC voltage Us is only above input direct voltage Ui, it is not necessary to then can be individually liter less than input direct voltage Ui
Volt circuit, is only smaller than input direct voltage Ui, it is not necessary to more than input direct voltage Ui, then if necessary to output DC voltage Us
Can be single reduction voltage circuit, it is straight less than input again if output DC voltage Us had both been greater than input direct voltage Ui
Voltage Ui is flowed, then can be booster circuit；DC-DC conversion circuit based on PWM be voltage raising and reducing circuit, output DC voltage and
The relational expression of input direct voltage is：
tonFor switch transistor T0ON time, toffFor switch transistor T0Turn-off time, T be PWM cycle, a for PWM work as
Preceding dutycycle.What be may vary broadly exports DC voltage Us to inversion full-bridge circuit module as power input；
Full bridge inverter based on SPWM can sample general scheme, and output DC voltage is Us, then Us square wave uso
Fourier expansion technology obtain：
M is Sine Modulated ratio, and because output only needs to fundamental wave, higher hamonic wave is filtered by LC filtration modules, therefore is finally needed
Will when export fundamental wave value；
Alternating voltage output fundametal compoment Uout, alternating voltage output fundamental wave peak value Uout-pp, alternating voltage output fundamental wave have
Valid value Uout-rmsCalculation formula it is as follows：
LC filter circuits are mainly used in filtering out the higher hamonic wave of full bridge inverter output；
The alternating voltage output fundamental wave that DC-DC conversion circuit, full bridge inverter and LC filter circuits combine together
Component UoutCalculation formula is：
A is direct current DC-DC PWM duty cycle in above-mentioned formula, and m is DC-AC SPWM Sine Modulateds ratio, and f is DC-AC's
SPWM sinusoidal frequencies, p is DC-AC SPWM sinusoidal phases, and Ui is input direct voltage, and input direct voltage Ui is fixed DC
Magnitude of voltage；
Therefore, only regulation SPWM Sine Modulateds can not realize the output of alternating voltage wide scope than m；
This method, which is combined by changing PWM duty cycle a value and SPWM Sine Modulateds ratio m, comes together to realize alternating current pressure amplitude
The change of value, PWM duty cycle a is the regulation of wide range gear, and SPWM Sine Modulateds are small regulation than m, so as to realize width
Scope and high-precision regulation.
As shown in figure 3, A1 and A2 realizes that regulation is obtained by PWM duty cycle a, A2_m1 is to compare m by SPWM Sine Modulateds
Adjust what is realized, that is, all realization is adjusted than m by SPWM Sine Modulateds in 0~A2 values, and current PWM duty cycle a is obtained
The DC values arrived are A2, when A2~A1 to be realized exchange value, PWM duty cycle a is set into A1, compares m by SPWM Sine Modulateds
A1~A2 exchange value is realized in regulation.
As shown in Fig. 2 one kind realizes inversion alternating current adjustable method in high precision, comprise the following steps：
Step S1, sets ac converter arrange parameter, and the ac converter arrange parameter includes alternating voltage and exports fundamental wave
Virtual value Uout-rms, SPWM Sine Modulateds than m, input direct voltage Ui, obtain alternating voltage output the effective preliminary design value of fundamental wave
Uout-rms1, SPWM Sine Modulateds are than preliminary design value m1, input direct voltage preliminary design value Ui1；
The SPWM Sine Modulateds are used to realize fine setting on the basis of the regulation of inversion alternating voltage wide scope wide range than m；
The input direct voltage Ui is civil power by pfc circuit and the DC voltage of Buck circuits；
Step S2, sets up the first equation
By the step S1 effective preliminary design value U of alternating voltage output fundamental waveout-rms1, SPWM Sine Modulateds are than preliminary design value m1, it is defeated
Enter DC voltage preliminary design value Ui1The alternating voltage output fundamental wave virtual value U of the first equation is substituted into respectivelyout-rms, SPWM sine adjust
System is than in m, input direct voltage Ui, calculating DC-DC circuit module output voltage calculated value Us2, PWM duty cycle calculated value a2；
Step S3, sets up second party formula
By step S2 PWM duty cycle calculated value a2, DC-DC circuit module output voltage calculated value Us2Substitute into respectively described
In PWM duty cycle a, the DC-DC circuit module output voltage Us of second party formula, calculate SPWM Sine Modulateds and compare calculated value
m3；
Step S4, finely tunes PWM duty cycle a, obtains PWM duty cycle adjusted value a4；
Step S5, sets SPWM sinusoidal frequency preliminary design values f5, SPWM sinusoidal phase preliminary design values p5；
Step S6, opens inversion output；
Step S7, sets up third party's formula
Set up the 4th equation
Set up the 5th equation
By the DC-DC circuit module output voltage calculated value Us in described step S2, S3, S52, PWM duty cycle calculated value
a2, SPWM Sine Modulateds are than calculated value m3, SPWM sinusoidal frequency preliminary design values f5, SPWM sinusoidal phase preliminary design values p5Substitute into the 3rd,
4th, the DC-DC circuit module output voltage Us of the 5th equation, PWM duty cycle a, SPWM Sine Modulated frequency more sinusoidal than m, SPWM
In rate f, SPWM sinusoidal phase p, alternating voltage output fundametal compoment calculated value U is calculatedout7, alternating voltage output fundamental wave peak meter
Calculation value Uout-pp, alternating voltage output fundamental wave effective calculated value Uout-rms7, input direct voltage calculated value Ui7；
Step S8, the AC voltage parameter of collection inversion output, the AC information of the inversion output includes exchange
Voltage output fundametal compoment Uout, alternating voltage output fundamental wave virtual value Uout-rms, alternating voltage output fundamental wave peak value Uout-ppWith
Sampled data required for fft analysis, and export fundametal compoment calculated value U by contrasting the alternating voltage in step S7out7、
Alternating voltage output fundamental wave peak calculated value Uout-pp, alternating voltage output fundamental wave effective calculated value Uout-rms7In step S5
SPWM sinusoidal frequency preliminary design values f5, SPWM sinusoidal phase preliminary design values p5Alternating voltage output bias amount is drawn, the alternating voltage is defeated
The amount of deviating includes alternating voltage output fundametal compoment changing value Uout, alternating voltage output fundamental wave virtual value variable quantity Uout-rms,
Alternating voltage output fundamental wave peak change amount Uout-pp, SPWM Sine Modulateds are than variation delta m, SPWM output frequency variation deltas f
With SPWM sinusoidal phase variation deltas p；
Step S9, the alternating voltage output bias amount being adjusted using pid algorithm in step S8 is finely adjusted, then
Step S4 is recycled to be configured；
In above-mentioned 8 steps, step S4~S9 always is what so circulation was performed, on condition that the exchange that step S1 is set
Inversion arrange parameter does not change, if inversion exchange output parameter changes, re-executes S1~S9 flows.
In described step S2, DC-DC circuit module output voltage Us is coarse adjustment parameter, if the friendship that step S1 is set
Stream inversion arrange parameter does not change, and does not change the DC-DC circuit module output voltage Us, needs minor adjustments then to adjust described
SPWM Sine Modulateds are than m, while finely tuning the SPWM sinusoidal frequencies f and SPWM sinusoidal phase p；
In described step S4, S5, the system for realizing inversion alternating current adjustable inverter in high precision is automatic
The numerical value of output frequency f and SPWM sinusoidal phase p to SPWM Sine Modulateds than m, SPWM is reset, for reduction pair
SPWM sinusoidal frequencies f and phase p regulating frequency and amplitude；
In described step S8, if the alternating voltage output fundamental wave virtual value U sampledrmsWith alternating voltage output
Fundamental wave peak value UppIt is not that the sinusoidal aberration rate that sine relation or fft analysis are obtained is slightly higher, SPWM sine curves can be finely adjusted
Data.
The utility model includes primary rectifier circuit module, DC-DC circuit module, inversion full-bridge circuit mould by one kind
Block, LC filtration modules, excess-current excess-temperature protection module, AD sampling modules, control module, the inversion dress of inverter DC output end
Put and come together to realize changing for alternating voltage amplitude by the way that PWM duty cycle a change value and SPWM Sine Modulateds are combined than m
Become, PWM duty cycle a is the regulation of wide range gear, SPWM Sine Modulateds are small regulation than m, adjust real by wide range
Existing output AC voltage exports wide scope and minor adjustments realize output AC voltage high accuracy, so as to realize inversion alternating current
Wide scope and high accuracy are pressed, SPWM methods is realized frequency and phase high accuracy.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to the utility model the scope of the claims.It should be pointed out that for the common of this area
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (6)
1. one kind realizes inversion alternating current adjustable inverter in high precision, it is characterised in that including primary rectifier circuit module,
DC-DC circuit module, inversion full-bridge circuit module, LC filtration modules, excess-current excess-temperature protection module, AD sampling modules, control mould
Block, inverter DC output end；
The one end of the primary rectifier circuit module respectively with 220V civil powers, DC-DC circuit module is electrically connected, for inciting somebody to action
200V civil powers are transformed into direct current, and carry out power-factor correction, and the direct current after primary rectifier then is supplied into DC-DC electricity
Road module；
The other end of the DC-DC circuit module and one end of inversion full-bridge circuit module are electrically connected, DC-DC circuit module
For inversion full-bridge circuit module to be pressed and is supplied to by pwm signal dutycycle exporting change and galvanic current；
The other end of the inversion full-bridge circuit module is connected with one end of LC filtration modules, and inversion full-bridge circuit module is used for will
The DC voltage of PWM control outputs is converted into AC signal, and the AC signal makes the exchange width of output by SPWM controls
Value, frequency and phase can be controllable in high precision；
The other end, the inverter DC output end of one end of the excess-current excess-temperature protection module respectively with LC filtration modules are carried out
Electrical connection, excess-current excess-temperature protection module is used to provide excessively stream, overheat protector to inverter and load, for detecting DC circuit
Detection information is simultaneously transferred to the control module, for the DC power transmission after processing to be filled to inversion by excessively stream, excess temperature situation
Put DC output end；
The LC filtration modules are used to the AC signal of output being filtered, and make the sinusoidal signal of output smooth；
The inverter DC output end and the other end of excess-current excess-temperature protection module are electrically connected, for being filled as inversion
The delivery outlet put；
The control module is electrically connected with DC-DC circuit module, inversion full-bridge circuit module, excess-current excess-temperature protection module respectively
Connect, inversion full-bridge circuit module is given for exporting SPWM signals, give the DC-DC circuit module for output pwm signal, be used for
Read the detection information of excess-current excess-temperature protection module；
The AD sampling modules are electrically connected with inverter DC output end, control module respectively, for reading inversion dress
Put the electric current and voltage signal of DC output end and be transferred to control module.
2. according to claim 1 realize inversion alternating current adjustable inverter in high precision, it is characterised in that described first
The circuit of level rectification circuit module is pfc circuit and buck reduction voltage circuits；
The circuit of the DC-DC circuit module is voltage raising and reducing circuit.
3. according to claim 1 realize inversion alternating current adjustable inverter in high precision, it is characterised in that the mistake
Flow through warm protection module and detect electric current and then disconnect direct current output higher than setting value；
The temperature of switching tube then disconnects direct current output higher than setting value on the excess-current excess-temperature protection module detection circuit.
4. according to claim 3 realize inversion alternating current adjustable inverter in high precision, it is characterised in that the mistake
Flow through warm protection module to disconnect after direct current output, be regularly briefly opened up output, once detecting excessively stream, be again off direct current defeated
Go out, constantly cyclically of short duration output, detection and excessively stream disconnect output, until output DC current less than setting value turns on direct current
Output.
5. according to claim 1 realize inversion alternating current adjustable inverter in high precision, it is characterised in that the control
Molding block includes central control unit, sampling unit, state detection unit, SPWM＆PWM output control units；
The central control unit is electrically connected with sampling unit, state detection unit, SPWM＆PWM output control units respectively
Connect, for the data for handling sampling unit, state detection unit is gathered, for controlling SPWM＆PWM output control units to export
SPWM or pwm signal；
The sampling unit is electrically connected with AD sampling modules, electric current and voltage signal number for reading AD sampling modules
According to；
The state detection unit is electrically connected with excess-current excess-temperature protection module, the mistake for reading excess-current excess-temperature protection module
Flow through warm signal data；
The SPWM＆PWM output control units are electrically connected with inversion full-bridge circuit module, DC-DC circuit module respectively, are used
Inversion full-bridge circuit module is given in exporting SPWM signals, DC-DC circuit module is given for output pwm signal.
6. according to claim 1 realize inversion alternating current adjustable inverter in high precision, it is characterised in that the control
Device processed is the controller using MCU or FPGA or DSP or ASIC；
The controller will calculate obtained alternating-current parameter by PID regulations and be adjusted, and obtain needing regulation parameter, then will adjust
Section parameter is converted into PWM and SPWM control signal；
The controller calculates real-time output current by algorithm, for show and judge in advance electric current whether excessively stream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720287768.0U CN206595913U (en) | 2017-03-22 | 2017-03-22 | Realize inversion alternating current adjustable inverter in high precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720287768.0U CN206595913U (en) | 2017-03-22 | 2017-03-22 | Realize inversion alternating current adjustable inverter in high precision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206595913U true CN206595913U (en) | 2017-10-27 |
Family
ID=60122591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720287768.0U Active CN206595913U (en) | 2017-03-22 | 2017-03-22 | Realize inversion alternating current adjustable inverter in high precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206595913U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685253A (en) * | 2017-03-22 | 2017-05-17 | 广州炫通电气科技有限公司 | Inversion device and inversion method capable of realizing high adjustable precision of inversion alternating current |
| CN110165922A (en) * | 2019-06-11 | 2019-08-23 | 西安科技大学 | Multiple-channel output random waveform power signal source |
| CN112615354A (en) * | 2020-12-17 | 2021-04-06 | 西安易朴通讯技术有限公司 | Overcurrent protection circuit, Buck circuit and control method |
-
2017
- 2017-03-22 CN CN201720287768.0U patent/CN206595913U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685253A (en) * | 2017-03-22 | 2017-05-17 | 广州炫通电气科技有限公司 | Inversion device and inversion method capable of realizing high adjustable precision of inversion alternating current |
| CN106685253B (en) * | 2017-03-22 | 2023-08-04 | 广州炫通电气科技有限公司 | Inverter device and method for realizing high-precision adjustable inversion of alternating current |
| CN110165922A (en) * | 2019-06-11 | 2019-08-23 | 西安科技大学 | Multiple-channel output random waveform power signal source |
| CN112615354A (en) * | 2020-12-17 | 2021-04-06 | 西安易朴通讯技术有限公司 | Overcurrent protection circuit, Buck circuit and control method |
| CN112615354B (en) * | 2020-12-17 | 2023-04-25 | 西安易朴通讯技术有限公司 | Overcurrent protection circuit, buck circuit and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106685253A (en) | Inversion device and inversion method capable of realizing high adjustable precision of inversion alternating current | |
| CN206595913U (en) | Realize inversion alternating current adjustable inverter in high precision | |
| CN104201919B (en) | A kind of electric leakage method of flow control of photovoltaic DC-to-AC converter | |
| CN105811460B (en) | A kind of power module high frequency test system for electronic power transformer | |
| CN105116340B (en) | Battery life detecting system and harmonic current control method based on harmonic detecting | |
| CN103856062B (en) | The dual-loop control circuit of phase-shifting full-bridge circuit of synchronous rectification | |
| CN109787298A (en) | A kind of current transformer and its control method | |
| CN104113200A (en) | Bridgeless APFC system used for variable frequency air conditioner and method for controlling the system | |
| CN109327153A (en) | The single-phase off-network inverter control method of photovoltaic | |
| CN106851885A (en) | Frequency-conversion microwave oven power control circuit and its closed loop control method | |
| CN109067192A (en) | A kind of control circuit and device of the inversion welding/cutting power supply for Width funtion input | |
| CN107517011A (en) | A kind of " one drag two " series resonance intermediate frequency induction heating power supply of multifrequency output | |
| CN106941257A (en) | A kind of combining inverter compensating control method | |
| CN205647274U (en) | Single -phase frequency conversion adjustable power device | |
| CN108306527B (en) | A method of inhibit unidirectional three-phase star to connect controlled rectifier line current Zero-crossing Distortion | |
| CN105699780A (en) | Grid-connected inverter commercial power impedance detection method and power factor correction method and device | |
| CN110011524B (en) | Control method, device and equipment for harmonic suppression and readable storage medium | |
| CN205960652U (en) | SVG based on three level NPC technique | |
| CN103904883A (en) | Load distribution control method and device for parallel direct current switch power supply | |
| CN205787992U (en) | Constant-current source control system | |
| CN106549582B (en) | A kind of waveform continuous transformation method reducing on-off times | |
| CN106505621B (en) | Inverter and its control method and device | |
| Dlamini et al. | Design and Application of the Passive Filters for Improved Power Quality in Stand-alone PV Systems | |
| CN106160558A (en) | A kind of pure sine wave inverter with high frequency chopping signal isolation features | |
| CN203056998U (en) | Current source type rectifier based on virtual resistor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 510000 Nancun Town, Panyu District, Guangzhou City, Guangdong Province, 6 1705 office buildings 383 North Panyu Avenue Patentee after: Guangzhou shining Electric Technology Co., Ltd. Address before: 511430 Dashi Stage 715, 105 National Road, Panyu District, Guangzhou, Guangdong 511 Patentee before: Guangzhou shining Electric Technology Co., Ltd. |
|
| CP02 | Change in the address of a patent holder |