CN203554322U - Novel sine wave inverter - Google Patents
Novel sine wave inverter Download PDFInfo
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- CN203554322U CN203554322U CN201320586179.4U CN201320586179U CN203554322U CN 203554322 U CN203554322 U CN 203554322U CN 201320586179 U CN201320586179 U CN 201320586179U CN 203554322 U CN203554322 U CN 203554322U
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Abstract
A novel sine wave inverter comprises a sine wave generator, a phase controller, a pulse modular, a transformation rectification filter circuit, an SPWM drive circuit, an LC filter circuit, a sine wave output circuit, a central processor, a voltage sampling feedback circuit and a current sampling feedback circuit, wherein the sine wave generator is connected with the phase controller; the phase controller is connected with the pulse modulator; the pulse modulator is connected with the transformation rectification filter circuit; the transformation rectification filter circuit is connected with the SPWM drive circuit; the SPWM drive circuit is connected with the LC filter circuit; and the LC filter circuit is connected with the sine wave output circuit. The novel sine wave inverter has the advantages such as simple structure, good stability, long service life, high efficiency and low cost. The novel sine wave inverter can effectively reduce the harmonic content in output waveforms; furthermore, since a protection circuit is disposed on the inverter, the use stability of the novel sine wave inverter can be effectively improved, the service life of the novel sine wave inverter is prolonged to a certain degree, and the use of the novel sine wave inverter is convenient and fast.
Description
Technical field
The utility model relates to a kind of inverter technology field, especially relates to a kind of sine wave invertor.
Background technology
Inverter style is according to the difference of the output AC voltage waveform of inverter, and inverter can be divided three classes substantially: square-wave inverter, ladder inverter (also claim modified sine wave, be still in essence square wave), sinewave inverter.Along with the develop rapidly of power electronic technology, sinewave output variable voltage variable frequency power supply has been widely used in every field, meanwhile the output voltage waveforms quality of variable voltage variable frequency power supply has also been proposed to more and more higher requirement.The alternating voltage waveform of sinewave inverter output is that the advantage of sinewave inverter is good output waveform with the identical sine wave of civil power, and the distortion factor is very low; little to stereo set and communication apparatus interference, noise is low, in addition; defencive function is complete, and complete machine power is high.Therefore, sinewave inverter is widely used in communication, industrial equipment, satellite communication equipment, military vehicle-mounted, ambulance, police car, boats and ships, solar energy and wind power generation field.The requirement of inverter output waveforms quality is mainly comprised to two aspects: the one, stable state accuracy is high; The 2nd, dynamic property is good.Therefore, research and development are not only simple but also have the control strategy for inverter of good dynamic and static performance, become one of study hotspot of field of power electronics.Existing inverter often there will be short-circuit protection unreliable in actual use; inverter easily damages; only by integrated amplifier, realize every defencive function, the defencive function of system is stable not, flexibly, for chip without special protection device; chip easily damages; the problems such as output filtering is fairly simple, and waveform is level and smooth not, therefore; develop a kind of simple in structurely, the sinewave inverter of efficient stable is very significant.
Summary of the invention
The purpose of this utility model is to provide a kind of sine wave invertor, and to solve, poor stability, useful life that prior art exists are short, efficiency is low, high in cost of production technical problem.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of sine wave invertor, comprises sine-wave generator, phase controller, pulse modulator, transformation current rectifying and wave filtering circuit, SPWM drive circuit, LC filter circuit, sinusoidal wave output circuit, central processing unit, voltage sample feedback circuit, current sample feedback circuit; Described sine-wave generator is connected with phase controller, and this phase controller is connected with pulse modulator; Described pulse modulator and transformation current rectifying and wave filtering circuit, this transformation current rectifying and wave filtering circuit and SPWM drive circuit, SPWM drive circuit is connected with LC filter circuit, and LC filter circuit is connected with sinusoidal wave output circuit.
As preferably, described sine-wave generator is connected with voltage sample feedback circuit, and this voltage sample feedback circuit is connected with central processing unit.
As preferably, described institute pulse modulator is connected with current sample feedback circuit, and this current sample feedback circuit is connected with central processing unit.
As preferably, described central processing unit is connected with display circuit, temperature-sensitive circuit, temperature-compensation circuit.
As preferably, between described SPWM drive circuit and sinusoidal wave output circuit, be connected with voltage detecting circuit, this voltage detecting circuit is connected to central processing unit.
As preferably, described phase controller comprises no-voltage detection, SYN register, phase control treatment circuit, and wherein no-voltage detection, SYN register are connected with phase control treatment circuit.
The utlity model has that simple in structure, good stability, long service life, efficiency are high, low cost and other advantages.Can effectively reduce the harmonic content in output waveform, and on inverter, be provided with protective circuit, effectively raise its stability in use, extend to a certain extent its useful life, convenient to use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described in detail.
Fig. 1 is structural representation of the present utility model.As shown in Figure 1, a sine wave invertor, is mainly comprised of sine-wave generator, phase controller, pulse modulator, transformation current rectifying and wave filtering circuit, SPWM drive circuit, LC filter circuit, sinusoidal wave output circuit, central processing unit, voltage sample feedback circuit, current sample feedback circuit etc.Wherein sine-wave generator is connected with phase controller, described phase controller comprises no-voltage detection, SYN register, phase control treatment circuit, wherein no-voltage detection, SYN register are connected with phase control treatment circuit, and this phase controller is connected with pulse modulator; Described pulse modulator and transformation current rectifying and wave filtering circuit, this transformation current rectifying and wave filtering circuit and SPWM drive circuit, SPWM drive circuit is connected with LC filter circuit, and LC filter circuit is connected with sinusoidal wave output circuit.
Sine-wave generator is connected with voltage sample feedback circuit, and this voltage sample feedback circuit is connected with central processing unit; Institute's pulse modulator is connected with current sample feedback circuit, and this current sample feedback circuit is connected with central processing unit.Central processing unit is connected with display circuit, temperature-sensitive circuit, temperature-compensation circuit.Between SPWM drive circuit and sinusoidal wave output circuit, be connected with voltage detecting circuit, this voltage detecting circuit is connected to central processing unit.Voltage sample feedback circuit gathers the input voltage of sine-wave generator, then controls display circuit through central processing unit, demonstrates magnitude of voltage; Described display circuit can also be used to show power output, the electric current after current sample feedback circuit acquisition pulse width modulator, then calculate power by central processing module, drive display module to show power.Whether central processing unit can also be used to detect in whole pure sine wave inverter each module operating state normal, and central processing unit, when certain module working state abnormal being detected, can drive display module to show miscue.
Claims (6)
1. a sine wave invertor, comprises sine-wave generator, phase controller, pulse modulator, transformation current rectifying and wave filtering circuit, SPWM drive circuit, LC filter circuit, sinusoidal wave output circuit, central processing unit, voltage sample feedback circuit, current sample feedback circuit; It is characterized in that, described sine-wave generator is connected with phase controller, and this phase controller is connected with pulse modulator; Described pulse modulator and transformation current rectifying and wave filtering circuit, this transformation current rectifying and wave filtering circuit and SPWM drive circuit, SPWM drive circuit is connected with LC filter circuit, and LC filter circuit is connected with sinusoidal wave output circuit.
2. a kind of sine wave invertor according to claim 1, is characterized in that, described sine-wave generator is connected with voltage sample feedback circuit, and this voltage sample feedback circuit is connected with central processing unit.
3. a kind of sine wave invertor according to claim 1, is characterized in that, described pulse modulator is connected with current sample feedback circuit, and this current sample feedback circuit is connected with central processing unit.
4. a kind of sine wave invertor according to claim 1, is characterized in that, described central processing unit is connected with display circuit, temperature-sensitive circuit, temperature-compensation circuit.
5. a kind of sine wave invertor according to claim 1, is characterized in that, between described SPWM drive circuit and sinusoidal wave output circuit, is connected with voltage detecting circuit, and this voltage detecting circuit is connected to central processing unit.
6. a kind of sine wave invertor according to claim 1, it is characterized in that, described phase controller comprises no-voltage detection, SYN register, phase control treatment circuit, and wherein no-voltage detection, SYN register are connected with phase control treatment circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320586179.4U CN203554322U (en) | 2013-09-23 | 2013-09-23 | Novel sine wave inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320586179.4U CN203554322U (en) | 2013-09-23 | 2013-09-23 | Novel sine wave inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203554322U true CN203554322U (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320586179.4U Expired - Fee Related CN203554322U (en) | 2013-09-23 | 2013-09-23 | Novel sine wave inverter |
Country Status (1)
| Country | Link |
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| CN (1) | CN203554322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039102A (en) * | 2018-08-03 | 2018-12-18 | 双新电器(郑州)制造有限公司 | A kind of sine head sea inverter |
-
2013
- 2013-09-23 CN CN201320586179.4U patent/CN203554322U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039102A (en) * | 2018-08-03 | 2018-12-18 | 双新电器(郑州)制造有限公司 | A kind of sine head sea inverter |
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Legal Events
| 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: 20140416 Termination date: 20140923 |
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| EXPY | Termination of patent right or utility model |