CN205647286U - Sinusoidal wave invertion power supply - Google Patents
Sinusoidal wave invertion power supply Download PDFInfo
- Publication number
- CN205647286U CN205647286U CN201620457112.4U CN201620457112U CN205647286U CN 205647286 U CN205647286 U CN 205647286U CN 201620457112 U CN201620457112 U CN 201620457112U CN 205647286 U CN205647286 U CN 205647286U
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Abstract
The utility model relates to an invertion power supply, especially a sinusoidal wave invertion power supply. It includes that CPU detects controller, high -frequency transformer, alternating current power supply, preceding stage isolating driver ware, DC power supply, PWM controller, rectifier filter, AC dc -to -ac converter, back level isolating driver ware and switching output circuit. The utility model discloses utilize CPU to detect controller and the control core of PWM controller as whole power, at first carry out the high -frequency chopper processing with the direct current of DC power supply output through the PWM modulation technique, and then carry out boost rectifier through high -frequency transformer and rectifier filter to export after finally alternateing into power frequency alternating current through the AC dc -to -ac converter, in order to supply power to the load, it has the power demand that can satisfy high power load and little power load simultaneously, utilize the switching output circuit then can be under the condition of DC power supply outage (if maintain and change DC power supply, when perhaps DC power supply breaks down), automatic switch -over to commercial power bypass does not influence the power supply to the load, has improved mains operated's continuity.
Description
Technical field
This utility model relates to a kind of inverter, especially a kind of sine-wave inverter and pacifying based on this
The sine-wave inverter that assembling structure part is formed.
Background technology
It is known that sine-wave inverter is one low-voltage DC can be converted to industrial-frequency alternating current
Electronic device, because its waveform exported is sine wave, and the civil power normally used close to us, will not
As output square wave other inverters to electrical equipment produce ill effect and be widely used in electric power and
Communications industry.
At present, sine-wave inverter on the market is usually and DC inverter is become power frequency low-voltage AC,
The alternating current being pressed into 220V/50Hz the most again by Industrial Frequency Transformer liter is used for load；This form
Design not only can make the inverter open circuit loss when light(-duty) service bigger, and power supply
Cost is high, volume and weight is bigger than normal；Meanwhile, existing inverter the most very closing due to functional design
Reason, also results in it and generally there is the problem such as poor reliability, function singleness, especially in direct current supply part
In the case of carrying out cutting off maintenance or breaking down, inverter cannot normally work.
Therefore, how existing sine-wave inverter is proposed improvement project, urgently solve in becoming industry
Technical problem certainly.
Utility model content
The deficiency existed for above-mentioned prior art, the purpose of this utility model is to provide a kind of circuit knot
The sine-wave inverter that structure is simple, reliability is high, power supply continuity is strong.
To achieve these goals, this utility model adopts the following technical scheme that
A kind of sine-wave inverter, it include CPU detection controller, high frequency transformer, alternating current power supply,
It is connected to the DC source of the primary side of high frequency transformer by prime driver for isolating, controlled by CPU detection
The control of device processed and by output PWM ripple control prime driver for isolating break-make PWM controller,
It is connected to the AC inverter of the primary side of high frequency transformer by rectifier filter, is connected to AC inverter
And CPU detects between controller and controls the rear class driver for isolating of AC inverter break-make and for handing over
The output electric current of stream power supply and the output electric current of AC inverter switch over the switching output circuit of output.
Preferably, it is also associated with one between positive pole and the prime driver for isolating of described DC source anti-reverse
Circuit, described reverse-connection preventing circuit is made up of the relay being arranged in parallel and one the 5th diode.
Preferably, described CPU detection controller is also associated with an external alarm module of dry contact, described CPU
Detection controller connects also by the RS232 communications cable communication external connection module and display circuit module.
Preferably, the input of described prime driver for isolating be also associated with one with DC source parallel distributed
Accessory power supply.
Preferably, described prime driver for isolating includes the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd MOS
Pipe and the 4th metal-oxide-semiconductor, the grid of described first metal-oxide-semiconductor, the grid of the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor
Grid and the grid of the 4th metal-oxide-semiconductor be connected with the PWM output pin of PWM controller respectively, described
The drain electrode of one metal-oxide-semiconductor is connected with the positive pole of DC source with the drain electrode of the second metal-oxide-semiconductor simultaneously, and the described 3rd
The source electrode of metal-oxide-semiconductor and the source electrode of the 4th metal-oxide-semiconductor are connected with the negative pole of DC source simultaneously；Described high frequency transformation
One end of the primary side of device is connected between the source electrode of the first metal-oxide-semiconductor and the drain electrode of the 3rd metal-oxide-semiconductor, another
End is connected between the source electrode of the second metal-oxide-semiconductor and the drain electrode of the 4th metal-oxide-semiconductor.
Preferably, described rectifier filter includes the first inductance and the first electric capacity, the order string of sequential series
First diode of connection and the second diode and the 3rd diode of sequential series and the 4th diode, institute
The one end of the primary side stating high frequency transformer is connected between the first diode and the second diode, the other end
It is connected between the 3rd diode and the 4th diode, the negative electrode of described second diode and the 4th diode
Negative electrode simultaneously ground connection, the anode of described first diode and the anode of the 3rd diode are simultaneously coupled to the
One end of one inductance, the other end of described first inductance passes through the first capacity earth；Described first inductance with
A signal feedback line being connected with CPU detection controller, described AC inverter it is provided with between first electric capacity
Input be connected between the first inductance and the first electric capacity.
Preferably, described AC inverter includes the 5th metal-oxide-semiconductor, the 6th metal-oxide-semiconductor, the 7th metal-oxide-semiconductor and
Eight metal-oxide-semiconductors, the grid of described 5th metal-oxide-semiconductor, the grid of the 6th metal-oxide-semiconductor, the grid of the 7th metal-oxide-semiconductor
Outfan with rear class driver for isolating is connected respectively with the grid of the 8th metal-oxide-semiconductor, described 5th metal-oxide-semiconductor
Drain electrode and the drain electrode of the 6th metal-oxide-semiconductor be simultaneously coupled to the outfan of rectifier filter, described 7th MOS
The source electrode of pipe and the source electrode of the 8th metal-oxide-semiconductor ground connection, the source electrode of described 5th metal-oxide-semiconductor and the 7th MOS simultaneously
The drain electrode of pipe connects switching output circuit, the source of described 6th metal-oxide-semiconductor by one first energy storage inductor simultaneously
The drain electrode of pole and the 8th metal-oxide-semiconductor connects switching output circuit by one second energy storage inductor simultaneously.
Preferably, described rear class driver for isolating is a photoelectrical coupler.
Owing to have employed such scheme, this utility model utilizes CPU detection controller and PWM controller to make
For the control core of whole power supply, by PWM modulation technology, first the unidirectional current that DC source exports is entered
Row high frequency chopping processes, and carries out boosting rectification by high frequency transformer and rectifier filter the most again, and
Exporting after being transformed into industrial-frequency alternating current by AC inverter eventually, to power to the load, it has and can meet simultaneously
High power load and the power demands of low-power load；Utilize switching output circuit then can break at DC source
(as DC source safeguarded and changing, or when DC source breaks down) in the case of electricity, from
The dynamic civil power that is switched to bypasses, and does not affect the power supply to load, improves the seriality that power supply is powered；Its knot
Structure is simple, reliability is high, has the strongest practical value and market popularization value.
Accompanying drawing explanation
Fig. 1 is the control principle block diagram of this utility model embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but this utility model can
Implement with the multitude of different ways being defined by the claims and covering.
As it is shown in figure 1, a kind of sine-wave inverter that the present embodiment provides, it includes CPU detection control
Device a processed (it can use such as MC908GP32 series monolithic as the case may be), high frequency transformer T,
Alternating current power supply b (can be understood as civil power), it is connected to high frequency transformer by prime driver for isolating c
The DC source d (such as 12VDC power supply) of the primary side of T, by CPU detection controller a control also
Control PWM controller e of prime driver for isolating c break-make by output PWM ripple, pass through rectification
Wave filter f be connected to the primary side of high frequency transformer T AC inverter g, be connected to AC inverter g with
CPU detects between controller a and controls the rear class driver for isolating h of AC inverter g break-make and be used for
The output electric current of alternating current power supply b and the output electric current of AC inverter g are switched over the switching output of output
Circuit k.
So, CPU is utilized to detect controller a and the PWM controller e control core as whole power supply,
First the unidirectional current exported by DC source d by PWM modulation technology carries out high frequency chopping process, then
Rectification of boosting is carried out again by high frequency transformer T and rectifier filter f, and eventually through AC inverter g
Being transformed into after industrial-frequency alternating current and export, to power to the load, it has can meet high power load and little simultaneously
The power demands of power termination；Meanwhile, employing two-stage isolation drive mode is utilized can effectively to ensure whole
The safety that individual power supply runs, can be that vast system user is implemented for detecting controller a by cooperation CPU
Network management and remotely monitoring are provided convenience；It addition, utilization switching output circuit k then can be at unidirectional current
In the case of the d power-off of source, (as safeguarded DC source d and changing, or DC source d occurs
During fault), automatically switch to civil power bypass, do not affect the power supply to load, improve the company that power supply is powered
Continuous property.
For improving the safety that inverter uses further, the positive pole at DC source d is isolated with prime
Being also associated with a reverse-connection preventing circuit m between driver c, reverse-connection preventing circuit m is by the relay being arranged in parallel
K1 and one the 5th diode D5 is constituted；Thus prevent from because of the reversal connection of DC source d, whole power supply being caused
Impact or other negative effects.
For enriching the utilitarian function of whole power supply to greatest extent, the CPU of the present embodiment detects controller a
Be also associated with a dry contact external alarm module n, by function setting, can be realize direct current input fault,
Exchange input fault provides hardware foundation with warnings such as exchanging output fault；Meanwhile, CPU detects controller a
Connect also by the RS232 communications cable and have communication external connection module p and display circuit module r；Think inverter
In real time monitoring display and provide condition to bit walk.
For improving the seriality that whole inverter is powered further, in the input of prime driver for isolating c
End is also associated with the accessory power supply s of one and DC source d parallel distributed；With this, can in alternating current power supply b or
Automatically accessory power supply s is enabled to substitute DC source d with reality in the case of person DC source d dead electricity simultaneously
The continuation of existing power supply is powered.
As a preferred version, the prime driver for isolating c of the present embodiment include the first metal-oxide-semiconductor Q1,
Second metal-oxide-semiconductor Q2, the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4；Wherein, the grid of the first metal-oxide-semiconductor Q1
The grid of pole, the grid of the second metal-oxide-semiconductor Q2, the grid of the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4 divides
It is not connected with the PWM output pin of PWM controller e, the drain electrode of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor
The drain electrode of Q2 is connected with the positive pole of DC source d simultaneously, the source electrode of the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor
The source electrode of Q4 is connected with the negative pole of DC source d simultaneously；One end of the primary side of high frequency transformer T connects
Between the source electrode and the drain electrode of the 3rd metal-oxide-semiconductor Q3 of the first metal-oxide-semiconductor Q1, the other end be connected to the 2nd MOS
Between source electrode and the drain electrode of the 4th metal-oxide-semiconductor Q4 of pipe Q2.Thus, PWM controller e can be examined according to CPU
The control instruction surveying controller a exports PWM ripple to each metal-oxide-semiconductor, and then by controlling each MOS
The break-make of pipe realizes the line conduction between DC source d and high frequency transformer T.
As a preferred version, the rectifier filter f of the present embodiment includes the first inductance of sequential series
L1 and the first electric capacity C1, the first diode D1 of sequential series and the second diode D2 and sequential series
The 3rd diode D3 and the 4th diode D4, one end of the primary side of high frequency transformer T is connected to first
Between diode D1 and the second diode D2, the other end be connected to the 3rd diode D3 and the 4th diode
Between D4, the negative electrode of the second diode D2 and the negative electrode of the 4th diode D4 ground connection, the one or two pole simultaneously
The anode of pipe D1 and the anode of the 3rd diode D3 are simultaneously coupled to one end of the first inductance L1, the first electricity
The other end of sense L1 is by the first electric capacity C1 ground connection；Set between the first inductance L1 and the first electric capacity C1
Being equipped with a signal feedback line being connected with CPU detection controller a, the input of AC inverter g is connected to
Between first inductance L1 and the first electric capacity C1.
As a preferred version, the AC inverter g of the present embodiment include the 5th metal-oxide-semiconductor Q5, the 6th
Metal-oxide-semiconductor Q6, the 7th metal-oxide-semiconductor Q7 and the 8th metal-oxide-semiconductor Q8；Wherein, the 5th metal-oxide-semiconductor Q5 grid,
The grid of the grid of the 6th metal-oxide-semiconductor Q6, the grid of the 7th metal-oxide-semiconductor Q7 and the 8th metal-oxide-semiconductor Q8 respectively with
The outfan of rear class driver for isolating h is connected, and the drain electrode of the 5th metal-oxide-semiconductor Q5 is with the 6th metal-oxide-semiconductor Q6's
Drain electrode is simultaneously coupled to the outfan of rectifier filter f, the source electrode of the 7th metal-oxide-semiconductor Q7 and the 8th metal-oxide-semiconductor
The source electrode of Q8 ground connection simultaneously, the source electrode of the 5th metal-oxide-semiconductor Q5 and the drain electrode of the 7th metal-oxide-semiconductor Q7 are passed through simultaneously
One first energy storage inductor L11 connects switching output circuit k, the source electrode of the 6th metal-oxide-semiconductor Q6 and the 8th MOS
The drain electrode of pipe Q8 connects switching output circuit k by one second energy storage inductor L21 simultaneously.So, whole
AC inverter can be made up of metal-oxide-semiconductor and energy storage inductor, and each metal-oxide-semiconductor of the pulsed drive of input is carried out accordingly
Action, to realize discharge and recharge to energy storage inductor, and then obtains industrial frequency AC at the other end of energy storage inductor
Electricity.
It addition, the rear class driver for isolating h of the present embodiment can use such as photoelectric coupling as the case may be
The isolation drive devices such as device.
The foregoing is only preferred embodiment of the present utility model, not thereby limit of the present utility model specially
Profit scope, every equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process
Conversion, or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in this utility model
Scope of patent protection in.
Claims (8)
1. a sine-wave inverter, it is characterised in that: it includes that CPU detection controller, high frequency become
Depressor, alternating current power supply, it is connected to the unidirectional current of the primary side of high frequency transformer by prime driver for isolating
Source, by CPU detection controller control and by output PWM ripple control prime driver for isolating
The PWM controller of break-make, be connected to by rectifier filter the primary side of high frequency transformer AC inverter,
Be connected to AC inverter and CPU detection controller between and control AC inverter break-make rear class isolation drive
Move device and for the output electric current of the output electric current of alternating current power supply and AC inverter is switched over output
Switching output circuit.
2. a kind of sine-wave inverter as claimed in claim 1, it is characterised in that: described unidirectional current
Be also associated with a reverse-connection preventing circuit between positive pole and the prime driver for isolating in source, described reverse-connection preventing circuit by
The relay being arranged in parallel and one the 5th diode are constituted.
3. a kind of sine-wave inverter as claimed in claim 1, it is characterised in that: described CPU examines
Surveying controller and be also associated with an external alarm module of dry contact, described CPU detection controller is also by RS232
The communications cable connects communication external connection module and display circuit module.
4. sine-wave inverter as claimed in claim 1 a kind of, it is characterised in that: described prime every
Input from driver is also associated with the accessory power supply of one and DC source parallel distributed.
5. sine-wave inverter as claimed in claim 1 a kind of, it is characterised in that: described prime every
The first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor is included from driver, described
The grid of one metal-oxide-semiconductor, the grid of the second metal-oxide-semiconductor, the grid of the 3rd metal-oxide-semiconductor and the grid of the 4th metal-oxide-semiconductor
Pole is connected with the PWM output pin of PWM controller respectively, the drain electrode of described first metal-oxide-semiconductor and the 2nd MOS
The drain electrode of pipe is connected with the positive pole of DC source simultaneously, the source electrode of described 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor
Source electrode be connected with the negative pole of DC source simultaneously；One end of the primary side of described high frequency transformer is connected to
Between source electrode and the drain electrode of the 3rd metal-oxide-semiconductor of the first metal-oxide-semiconductor, the other end be connected to the source of the second metal-oxide-semiconductor
Between the drain electrode of pole and the 4th metal-oxide-semiconductor.
6. a kind of sine-wave inverter as claimed in claim 1, it is characterised in that: described rectification is filtered
Ripple device includes the first inductance and the first electric capacity, first diode and the two or two of sequential series of sequential series
Pole pipe and the 3rd diode of sequential series and the 4th diode, the primary side of described high frequency transformer
One end is connected between the first diode and the second diode, the other end is connected to the 3rd diode and the 4th
Between diode, the negative electrode of the negative electrode of described second diode and the 4th diode ground connection simultaneously, described the
The anode of one diode and the anode of the 3rd diode are simultaneously coupled to one end of the first inductance, and described first
The other end of inductance passes through the first capacity earth；Be provided with between described first inductance and the first electric capacity one with
The signal feedback line that CPU detection controller is connected, the input of described AC inverter is connected to the first inductance
And between the first electric capacity.
7. a kind of sine-wave inverter as claimed in claim 1, it is characterised in that: described AC is inverse
Become device and include the 5th metal-oxide-semiconductor, the 6th metal-oxide-semiconductor, the 7th metal-oxide-semiconductor and the 8th metal-oxide-semiconductor, described 5th MOS
The grid of the grid of pipe, the grid of the 6th metal-oxide-semiconductor, the grid of the 7th metal-oxide-semiconductor and the 8th metal-oxide-semiconductor is respectively
It is connected with the outfan of rear class driver for isolating, the drain electrode of described 5th metal-oxide-semiconductor and the leakage of the 6th metal-oxide-semiconductor
Pole is simultaneously coupled to the outfan of rectifier filter, the source electrode of described 7th metal-oxide-semiconductor and the 8th metal-oxide-semiconductor
Source electrode ground connection simultaneously, the source electrode of described 5th metal-oxide-semiconductor and the drain electrode of the 7th metal-oxide-semiconductor are simultaneously by one first
It is same that energy storage inductor connects switching output circuit, the source electrode of described 6th metal-oxide-semiconductor and the drain electrode of the 8th metal-oxide-semiconductor
Time by one second energy storage inductor connect switching output circuit.
8. sine-wave inverter as claimed in claim 1 a kind of, it is characterised in that: described rear class every
It is a photoelectrical coupler from driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620457112.4U CN205647286U (en) | 2016-05-18 | 2016-05-18 | Sinusoidal wave invertion power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620457112.4U CN205647286U (en) | 2016-05-18 | 2016-05-18 | Sinusoidal wave invertion power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205647286U true CN205647286U (en) | 2016-10-12 |
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ID=57057727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620457112.4U Expired - Fee Related CN205647286U (en) | 2016-05-18 | 2016-05-18 | Sinusoidal wave invertion power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN205647286U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107871428A (en) * | 2017-10-31 | 2018-04-03 | 浙江大学城市学院 | A kind of inverter power circuit |
| CN108879983A (en) * | 2018-07-11 | 2018-11-23 | 西安电子科技大学 | The non-contact type apparatus for transmitting electric energy of electromagnetic force can be offset |
-
2016
- 2016-05-18 CN CN201620457112.4U patent/CN205647286U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107871428A (en) * | 2017-10-31 | 2018-04-03 | 浙江大学城市学院 | A kind of inverter power circuit |
| CN108879983A (en) * | 2018-07-11 | 2018-11-23 | 西安电子科技大学 | The non-contact type apparatus for transmitting electric energy of electromagnetic force can be offset |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20170518 |
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| CF01 | Termination of patent right due to non-payment of annual fee |