CN203166795U - A soft starting sinusoidal inverter - Google Patents
A soft starting sinusoidal inverter Download PDFInfo
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- CN203166795U CN203166795U CN 201320165932 CN201320165932U CN203166795U CN 203166795 U CN203166795 U CN 203166795U CN 201320165932 CN201320165932 CN 201320165932 CN 201320165932 U CN201320165932 U CN 201320165932U CN 203166795 U CN203166795 U CN 203166795U
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Abstract
The utility model provides a soft starting sinusoidal inverter comprising a PWM driving circuit, a transformer circuit, a rectifying and filtering circuit, and a SPWM driving circuit which are successively connected in series. The soft starting sinusoidal inverter is characterized in that the output end of the SPWM driving circuit is connected with a LC filtering circuit, that the output end of the LC filtering circuit is connected with a sine wave output circuit, that the output end of the sine wave output circuit is connected with a soft start control circuit, and that the soft start control circuit is connected with the SPWM driving circuit. By the arranged sine wave output circuit and the soft start control circuit, at the moment when the inverter starts inductive and capacitive loads, the output voltage of the inverter is slowly increased in order to prevent peak impact at the starting instant of an electric device. Therefore, requirements of any electric device with rated power can be satisfied.
Description
Technical field
The utility model belongs to the inverter field, is specifically related to a kind of soft start sinewave inverter.
Background technology
Inverter is the equipment that direct current energy (battery, accumulator jar) is transformed into alternating current (being generally 220v, 50HZ sine or square wave).It is made up of inverter bridge, control logic and filter circuit.Be widely used in air-conditioning, home theater, electric wheel, electric tool, sewing machine, DVD, VCD, computer, TV, washing machine, smoke exhaust ventilator, refrigerator, video tape recorder, massager, fan, illumination etc.But pure sine wave inverter on the market causes the erroneous judgement overload protection easily when starting perception, capacitive load at present, and perception, capacitive load moment startup peak power are the several times of rated power.
The utility model content
The utility model provides a kind of power consumption equipment of can avoiding to start the soft start sinewave inverter that transient peak impacts at above-mentioned the deficiencies in the prior art.
The utility model is achieved by the following technical solution:
A kind of soft start sinewave inverter comprises PWM drive circuit, transformer circuit, current rectifying and wave filtering circuit and the SPWM drive circuit of connecting successively; It is characterized in that, the output of described SPWM drive circuit links to each other with the LC filter circuit, the output of LC filter circuit links to each other with sinusoidal wave output circuit, and the output of sinusoidal wave output circuit links to each other with SS (soft start) control circuit, and SS (soft start) control circuit links to each other with the SPWM drive circuit.
Further setting of the present utility model is that described soft start sinewave inverter also comprises a protective circuit, and described protective circuit links to each other with the PWM drive circuit.
Further setting of the present utility model is, described soft start sinewave inverter also comprises an output voltage detecting circuit, the input of described output voltage detecting circuit links to each other with the output of sinusoidal wave output circuit, and the output of output voltage detecting circuit links to each other with the SPWM drive circuit.
Further setting of the present utility model is that described soft start sinewave inverter also comprises a guidance panel, and described guidance panel links to each other with the PWM drive circuit.
Soft start sinewave inverter described in the utility model is by arranging sinusoidal wave output circuit and SS (soft start) control circuit, make inverter start perception, capacitive load during moment, inverter output voltage can slowly raise, avoid power consumption equipment and start the transient peak impact, thereby can satisfy the demand of any power consumption equipment under the rated power.
Description of drawings
Fig. 1 is the structured flowchart of soft start sinewave inverter described in the utility model.
Embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the utility model provides a kind of soft start sinewave inverter, the PWM drive circuit, transformer circuit, current rectifying and wave filtering circuit, SPWM drive circuit, LC filter circuit and the sinusoidal wave output circuit that comprise series connection successively, the output of sinusoidal wave output circuit links to each other with SS (soft start) control circuit, and SS (soft start) control circuit links to each other with the SPWM drive circuit.Described LC filter circuit is by the synthetic filtration module of inductance, electric capacity and resistor group, can be used for harmonic compensation, avoids signal to disturb.Described SS (soft start) control circuit is used for regulating the size of starting resistor and starting current, and inverter output voltage is slowly raise.
In order to prevent situations such as overcurrent, overvoltage, low pressure to the influence of inverter, described soft start sinewave inverter also comprises a protective circuit, and described protective circuit links to each other with the PWM drive circuit.
In order to measure the output voltage of inverter, described soft start sinewave inverter also comprises an output voltage detecting circuit, the input of described output voltage detecting circuit links to each other with the output of sinusoidal wave output circuit, and the output of output voltage detecting circuit links to each other with the SPWM drive circuit.Output voltage detecting circuit feeds back to the SPWM drive circuit with the sinewave output voltage output of inverter as feedback signal.
For the ease of the manual operation inverter, described soft start sinewave inverter also comprises a guidance panel, and described guidance panel links to each other with the PWM drive circuit.
Above-mentioned each circuit all can adopt prior art to realize, repeats no more in the utility model.The above is preferred embodiment of the present utility model, and all equivalent variations of doing according to the utility model claim all should belong to protection range of the present utility model.
Claims (4)
1. a soft start sinewave inverter comprises PWM drive circuit, transformer circuit, current rectifying and wave filtering circuit and the SPWM drive circuit of connecting successively; It is characterized in that, the output of described SPWM drive circuit links to each other with the LC filter circuit, the output of LC filter circuit links to each other with sinusoidal wave output circuit, and the output of sinusoidal wave output circuit links to each other with SS (soft start) control circuit, and SS (soft start) control circuit links to each other with the SPWM drive circuit.
2. soft start sinewave inverter according to claim 1 is characterized in that, described soft start sinewave inverter also comprises a protective circuit, and described protective circuit links to each other with the PWM drive circuit.
3. soft start sinewave inverter according to claim 1, it is characterized in that, described soft start sinewave inverter also comprises an output voltage detecting circuit, the input of described output voltage detecting circuit links to each other with the output of sinusoidal wave output circuit, and the output of output voltage detecting circuit links to each other with the SPWM drive circuit.
4. soft start sinewave inverter according to claim 1 is characterized in that, described soft start sinewave inverter also comprises a guidance panel, and described guidance panel links to each other with the PWM drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320165932 CN203166795U (en) | 2013-04-03 | 2013-04-03 | A soft starting sinusoidal inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320165932 CN203166795U (en) | 2013-04-03 | 2013-04-03 | A soft starting sinusoidal inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166795U true CN203166795U (en) | 2013-08-28 |
Family
ID=49027949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320165932 Expired - Fee Related CN203166795U (en) | 2013-04-03 | 2013-04-03 | A soft starting sinusoidal inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203166795U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923672A (en) * | 2018-06-07 | 2018-11-30 | 广州市普今电子科技有限公司 | A kind of modified sine wave inverter promoting starting load ability |
| CN113489300A (en) * | 2021-06-11 | 2021-10-08 | 深圳欧陆通电子股份有限公司 | Switch power supply capacitive load starting method and switch power supply |
-
2013
- 2013-04-03 CN CN 201320165932 patent/CN203166795U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923672A (en) * | 2018-06-07 | 2018-11-30 | 广州市普今电子科技有限公司 | A kind of modified sine wave inverter promoting starting load ability |
| CN108923672B (en) * | 2018-06-07 | 2024-04-16 | 广州市普今电子科技有限公司 | Modified sine wave inverter capable of improving starting load capacity |
| CN113489300A (en) * | 2021-06-11 | 2021-10-08 | 深圳欧陆通电子股份有限公司 | Switch power supply capacitive load starting method and switch power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WENZHOU NEW FOCUS TECH. + ELEC. CO., LTD. Free format text: FORMER OWNER: WENZHOU CITY XINJIAODIAN TECHNOLOGY ELECTRONIC CO., LTD. Effective date: 20150729 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150729 Address after: 325000 building, No. 519, No. fifteen, two, Binhai Road, Wenzhou economic and Technological Development Zone, Wenzhou, Zhejiang, two Patentee after: WENZHOU NEW FOCUS TECH. & ELEC. CO., LTD. Address before: 325000, No. 24, Yong Xi Road, Sha town, Longwan District, Zhejiang, Wenzhou Patentee before: Wenzhou New Focus Tech & Elec Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20160403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |