CN2859928Y - 300W modifying sine wave inverter - Google Patents
300W modifying sine wave inverter Download PDFInfo
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- CN2859928Y CN2859928Y CN 200520142915 CN200520142915U CN2859928Y CN 2859928 Y CN2859928 Y CN 2859928Y CN 200520142915 CN200520142915 CN 200520142915 CN 200520142915 U CN200520142915 U CN 200520142915U CN 2859928 Y CN2859928 Y CN 2859928Y
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Abstract
The utility model relates to a 300W modifying sine wave inverter whose output is a single phase modifying sine wave AC, and which is composed of a low-voltage driving control circuit, a pulse width modulation output driving circuit and an input/output protection circuit electrically connecting with each other. The utility model converts a 12V DC voltage into a single phase 220V modifying sine wave AC with a frequency of 50Hz, is able to independently supply power to 220V devices, has a high work efficiency, a low cost, a novel appearance, a small size, a perfect protection function and a wide application.
Description
Technical field
The utility model relates to a kind of Zhi Liu AC energy conversion equipment, relates to the invention that a kind of 300W that is output as single-phase correction sine wave alternating current revises the sinewave inverter aspect or rather.
Background technology
At present, the existing inverter that direct current is changed into AC energy adopts the square wave inversion in the majority, also having most inverters is with Industrial Frequency Transformer modulation output, the load capacity of its output waveform is very weak, even can not be with a year inductive load, loss is also big, and the life-span that power consumption equipment is made also affects.Therefore, no matter consider that from environmental protection, energy-saving and cost-reducing aspect it is imperative to improve inverter.
This shows that above-mentioned existing inverter still has many defectives, and the assistant officer waits to be improved.
Because the defective that above-mentioned existing inverter exists, the design people is based on being engaged in this type of product design manufacturing for many years, amassing has abundant practical experience and professional knowledge, actively studied innovation, revise sinewave inverter in the hope of founding a kind of 300W that improves molding structure, can improve the general molding structure of existing conventional inverter on the market, make it have more competitiveness.Through constantly research, design, and after studying sample and improvement repeatedly, create the utility model that has practical value finally.
The utility model content
Technical problem underlying to be solved in the utility model is, overcome the defective that existing inverter exists, and the 300W that a kind of new structure is provided revises sinewave inverter, it is controlled ac output voltage, realize stable cycle mean-square value output, and guarantee the correction sine wave that output is stable.By output voltage being carried out the leading FEEDBACK CONTROL of phase place, can realize exporting reliable and stable index request.
The utility model solves its technical problem underlying and realizes by the following technical solutions.Revise sinewave inverter according to the 300W that the utility model proposes, comprise that electronic component is provided with the structural circuit plate, is characterized in that: be electrically connected to form by low-voltage driving control circuit and pulse width modulation output driving circuit and protection circuit for input and output.
The utility model solves its technical problem and can also adopt following technical measures further to realize.
Preceding described low-voltage driving control circuit connects metal-oxide-semiconductor by filter capacitor, metal-oxide-semiconductor promotes high frequency transformer, high frequency transformer rises to low pressure and is the high-frequency and high-voltage alternating current, be rectified into high voltage direct current through the ultrahigh speed rectification circuit, and feeding back to the low voltage control chip for driving, low voltage control chip for driving control metal-oxide-semiconductor is formed.
One group in twos of preceding described metal-oxide-semiconductor, and become parallel-connection structure to connect.
Preceding described rectification circuit is formed full-bridge rectification by the ultrahigh speed rectifier diode, is filtering to subordinate's chopper circuit through electrochemical capacitor.
Preceding described pulse width modulation output driving circuit becomes four tunnel outputs by copped wave controlling and driving chip output two paths of signals through the transistor frequency division, and the correction sine wave of the frequency 50Hz voltage 220V that the output of control metal-oxide-semiconductor is stable is formed.
Before described control impuls width modulation circuit form by copped wave controlling and driving chip and peripheral RC filtering, diode element.
The preceding described correction sine voltage that constitutes full-bridge copped wave output frequency 50Hz by four metal-oxide-semiconductors.
Preceding described protection circuit for input and output electricity is made of protection chip LM324.
The utility model compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known; the utility model is owing to adopt technique scheme; making it is the correction sine wave alternating current that single-phase 220V frequency is 50Hz with the 12V dc voltage conversion; can give and use the equipment of 220V civil power independently-powered; the utility model efficient height, cost is low, and the outward appearance novelty is small and exquisite; defencive function is perfect, has wide range of applications.
The utility model is on the practicality and cost benefit of structural design, use, really it is required to meet industry development fully, and disclosed structure is unprecedented innovative design, it does not see any publication, do not see more that before application that identical architectural feature is arranged is known, formerly public, and also not seeing on the market has similar products like, and has novelty really.
Structure of the present utility model really has more technological progress than existing inverter, and its particular structure feature and more can also be far from existing inverter and can compare, have more technical progress than existing inverter, and have the multinomial effect of enhancement, and creative really.
Designer of the present utility model studies this series products experience of existing ten several years, quite understand for existing problem of existing inverter and defective, and the utility model is to found according to above-mentioned Study of Defects exploitation, it can reach its intended purposes and effect really, not only on the kenel of space, really belong to innovation, and suitable enhancement effect is arranged than the true accessory of existing inverter, and existing known product has more technological progress and practicality, and produced handy and practical good effect, and have practicality really.
In sum, the utility model really belongs to innovation on the kenel of space, and has the multinomial effect of enhancement than existing product, and simple in structure, is suitable for practicality, has the extensive value of industry.It is in limited field, technical development space, no matter structurally or bigger improvement all arranged on the function, and have large improvement technically, and produced handy and practical effect, and has the effect of enhancement really, thereby being suitable for practicality more, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction partly of technical solutions of the utility model feature, for making the professional and technical personnel can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.
Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the circuit theory diagrams that the utility model 300W revises sinewave inverter.
Fig. 2 is the circuit theory diagrams that the utility model 300W revises the control impuls width modulated of sinewave inverter.
Fig. 3 is the electronic component internal structure block diagram that the utility model 300W revises sinewave inverter.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to according to its embodiment, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.
See also Fig. 1, shown in Figure 2, the utility model 300W revises sinewave inverter mainly by electrochemical capacitor, power MOS pipe, and high frequency transformer, rectifier diode and driving protection chip are formed.The layout of its internal entity can clearly be found out main layout by accompanying drawing 3, and system bulk is reduced, and it is minimum that power dissipation reaches.
The utility model circuit bank composition three parts, first is the low-voltage driving control circuit, and second portion is the PWM output driving circuit, and third part is a protection circuit for input and output.Briefly introduce the operation principle of control section below.
The low-voltage driving control circuit mainly is to be that high voltage direct current is shown in Fig. 1 front end with dc voltage conversion, input dc power is through electrochemical capacitor EC1, EC2 filtering, send into the push-pull type high frequency transformer, the output of the former limit of transformer promotes through two groups of metal-oxide-semiconductor Q1, Q2, Q3, Q4 (metal-oxide-semiconductor is two-tube being connected in parallel), and the control of metal-oxide-semiconductor mainly is that the control output frequency by chip for driving SG3525 is 35KHz; Promptly the direct current that will make low pressure is controlled the AC energy that becomes frequency 35KHz variation through the switch of metal-oxide-semiconductor again through high frequency transformer; Electric current in the elementary generation high frequency variation of high frequency transformer T1, boost through transformer again and be the high-frequency and high-voltage alternating current, this alternating current is a high voltage direct current by ultrahigh speed rectification two utmost point full-bridge rectification, being filtered into high direct voltage through electric capacity EC3 is taking a sample, feed back to SG3525 FEEDBACK CONTROL and compensation pin, output HIGH voltage is stabilized in the 310V.Supply with the chopper circuit of subordinate with this voltage and analyze reference.
The PWM output driving circuit mainly utilizes the pulse-width modulation function of SG3525, two paths of signals process transistor Q9 with its output, Q10, Q11, the Q12 frequency division is four tunnel outputs, Hu Bu drive signal in twos, control the drive signal of final output mos pipe, high-voltage dc voltage is through metal-oxide-semiconductor Q5, Q6, Q7, Q8 full-bridge copped wave output frequency is the sinusoidal wave electric energy of the correction of 50HZ, this output AC electricity is through RC filtering, form the leading circuit for rectifying operational analysis of phase place (seeing accompanying drawing 2), drive away the interference of clutter, gather the voltage of output, feed back to anti-phase input of copped wave chip for driving SG3525 and compensation control pin, regulate the pulse duration of the drive output signal of SG3252, when the voltage of output is higher than set point 220V,, the output pulse width of copped wave chip for driving is reduced by pulsewidth circuit for rectifying (Fig. 2); Otherwise, then increase pulsewidth.Making the wave mode and the reliable and stable output frequency 50Hz of the voltage voltage of output is the correction sine wave of 220V.
The overvoltage of input voltage, undervoltage turnoff and can recover control, the overload of output, short circuit can not be replied shutoff, then are to be sampled by LM324, and peripheral circuit does not draw, and is controlling low-voltage driving chip SG3525, and it is safe and reliable that the control that makes is turn-offed.
Technical parameter
Power output is 300W, and what metal-oxide-semiconductor used is that IR company produces IRF3205, Q1-Q4, and it is withstand voltage to be 55V, rated current is 80A; IRF840 Q5-Q8, it is withstand voltage 500 volts, rated current 8A, transistor Q9-Q12 are the 1N5551 of PHILIPS, withstand voltage is 160V, is 0.4A by electric current.Electrochemical capacitor EC1, EC2 are the 2200 μ F of G-LUXON, withstand voltage 16V electric capacity, and EC3 is 47uF, withstand voltage 450V, and high frequency transformer is EC40.Ultrahigh speed rectifier diode D1 is that MUR460 connects as shown in Figure 1.Selected transformer capacity is 400VA.
Overall dimensions (length * wide * height) (mm
3) 210 * 95 * 55
Direct current input DC10V-15V
Capacity 300W
Exchange output AC220V
Supply frequency 50Hz
Overall efficiency 92%
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (8)
1, a kind of 300W revises sinewave inverter, comprises that electronic component is provided with the structural circuit plate, is characterized in that: be electrically connected to form by low-voltage driving control circuit and pulse width modulation output driving circuit and protection circuit for input and output.
2,300W according to claim 1 revises sinewave inverter, it is characterized in that: wherein said low-voltage driving control circuit connects metal-oxide-semiconductor by filter capacitor, metal-oxide-semiconductor promotes high frequency transformer, high frequency transformer rises to low pressure and is the high-frequency and high-voltage alternating current, be rectified into high voltage direct current through the ultrahigh speed rectification circuit, and feeding back to the low voltage control chip for driving, low voltage control chip for driving control metal-oxide-semiconductor is formed.
3,300W according to claim 2 revises sinewave inverter, it is characterized in that: one group in twos of wherein said metal-oxide-semiconductor, and become parallel-connection structure to connect.
4, revise sinewave inverter according to claim 2 or 3 described 300W, it is characterized in that: wherein said rectification circuit is formed full-bridge rectification by the ultrahigh speed rectifier diode, is filtering to subordinate's chopper circuit through electrochemical capacitor.
5,300W according to claim 1 revises sinewave inverter, it is characterized in that: wherein said pulse width modulation output driving circuit is by copped wave controlling and driving chip output two paths of signals, become four tunnel outputs through the transistor frequency division, the correction of the frequency 50Hz voltage 220V that the output of control metal-oxide-semiconductor is stable is sinusoidal wave to be formed.
6,300W according to claim 5 revises sinewave inverter, it is characterized in that: wherein said control impuls width modulation circuit is made up of copped wave controlling and driving chip and peripheral RC filtering, diode element.
7, revise sinewave inverter according to claim 5 or 6 described 300W, it is characterized in that: wherein said metal-oxide-semiconductor is made of the correction sine voltage of full-bridge copped wave output frequency 50Hz four metal-oxide-semiconductors.
8,300W according to claim 1 revises sinewave inverter, it is characterized in that: wherein said protection circuit for input and output electricity is made of protection chip LM324.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520142915 CN2859928Y (en) | 2005-12-08 | 2005-12-08 | 300W modifying sine wave inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520142915 CN2859928Y (en) | 2005-12-08 | 2005-12-08 | 300W modifying sine wave inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2859928Y true CN2859928Y (en) | 2007-01-17 |
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ID=37612785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520142915 Expired - Lifetime CN2859928Y (en) | 2005-12-08 | 2005-12-08 | 300W modifying sine wave inverter |
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| Country | Link |
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| CN (1) | CN2859928Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185510A (en) * | 2011-05-09 | 2011-09-14 | 张承臣 | Safety protective power system |
| CN109713727A (en) * | 2019-03-07 | 2019-05-03 | 苏州科技大学 | A kind of portable threephase alternator electricity-generating method |
-
2005
- 2005-12-08 CN CN 200520142915 patent/CN2859928Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185510A (en) * | 2011-05-09 | 2011-09-14 | 张承臣 | Safety protective power system |
| WO2012151935A1 (en) * | 2011-05-09 | 2012-11-15 | 沈阳隆基电磁科技股份有限公司 | Safety protection-type power supply system |
| CN102185510B (en) * | 2011-05-09 | 2013-07-31 | 沈阳隆基电磁科技股份有限公司 | Safety protective power system |
| CN109713727A (en) * | 2019-03-07 | 2019-05-03 | 苏州科技大学 | A kind of portable threephase alternator electricity-generating method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070117 |
|
| EXPY | Termination of patent right or utility model |