CN1937387B - SPWM pulse generating and distributing circuit for pure sine wave inverter - Google Patents
SPWM pulse generating and distributing circuit for pure sine wave inverter Download PDFInfo
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- CN1937387B CN1937387B CN200610096237XA CN200610096237A CN1937387B CN 1937387 B CN1937387 B CN 1937387B CN 200610096237X A CN200610096237X A CN 200610096237XA CN 200610096237 A CN200610096237 A CN 200610096237A CN 1937387 B CN1937387 B CN 1937387B
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- 238000010586 diagram Methods 0.000 description 2
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- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
It consists of SPWM impulse generation (IG) circuit and impulse distribution (ID) circuit. IG is a single chip processing unit PIC16F716. ID are NAND gates. The 9th pin of the processing unit generates a sine SPWM half-wave and its 11th pin generates SPWM wave. The 8th pin or any I/O end of the processing unit generates the rectangle wave which frequency the user needs exactly. The 8th, the 9th and the 11th pins are connected to the NAND gates. The three basic waves, generated by IG and converted by IG, form four SPWM impulse groups to drive the power devices of the full bridge circuit to obtain a pure sine inversion power supply. This practical new model offers a hi-efficiency and simple SPWM impulse generating and distributing circuit. It ensures the pure sine inversion power supply miniature and reduces the cost.
Description
Technical field
The present invention relates to the SPWM pulse generation and the distributor circuit of pure sine wave inverter.
Background technology
Along with science and technology and expanding economy, country is to the attention of green energy resource industry, and solar power generation and wind power plant have been brought into use in increasing place.Along with the high speed development of automobile industry, vehicle-mounted power consumption equipment is also more and more to the demand of AC power simultaneously.International at present and domestic inverter product commonly used is the modified model of square wave for what revise ripple mostly, and power consumption equipment is disturbed; The pure sine wave inverter of few part manufacturers produce makes equipment volume bigger because of using complicated single-chip microcomputer and hardware driving circuit, and cost has influenced the popularization and the use of pure sine wave inverter than higher.
Summary of the invention
In order to overcome the defective of existing correction ripple inverter, and the circuit complexity of simplifying existing pure sine wave inverter, the invention provides a kind of SPWM pulse generation and distributor circuit of pure sine wave inverter, simplify circuit, reduce production cost of products.
The technical solution adopted for the present invention to solve the technical problems is: this SPWM pulse generation and distributor circuit mainly connect pulse distributor by pulse-generating circuit and form, and the SPWM pulse-generating circuit is the PIC16F716 single-chip microcomputer, and pulse distributor is a NAND gate; The output of the second NAND gate U2 inserts two inputs of the 3rd NAND gate U3, the output of the 4th NAND gate U4 inserts two inputs of the 5th NAND gate U5, the output of the 6th NAND gate U6 inserts two inputs of the 7th NAND gate U7, the output of the 8th NAND gate U8 inserts two inputs of the 9th NAND gate U9,9 pin of PIC16F716 single-chip microcomputer produce the SPWM waveform of half-sinusoid, 11 pin of single-chip microcomputer produce opposite with the 9th pin and have increased the SPWM waveform in dead band, 8 pin of single-chip microcomputer or remove 9 pin, arbitrary I/O mouth beyond 11 pin produces and the actual identical square wave of output frequency, 8 of the single-chip microcomputer of requiring of user, 9,11 pin insert NAND gate; 9 pin of PIC16F716 single-chip microcomputer produce the SPWM waveform of half-sinusoid, 11 pin of single-chip microcomputer produce opposite with the 9th pin and have increased the SPWM waveform in dead band, 8 pin of single-chip microcomputer or the arbitrary I/O mouth except that 9 pin, 11 pin produce and the actual identical square wave of output frequency that requires of user, and 8,9,11 pin of single-chip microcomputer insert NAND gate.
In the SPWM pulse generation and distributor circuit of pure sine wave inverter of the present invention, this circuit mainly connects pulse distributor by pulse-generating circuit and forms, and pulse-generating circuit is the PIC16F716 single-chip microcomputer, and pulse distributor is a NAND gate; The output of the second NAND gate U2 inserts two inputs of the 3rd NAND gate U3, the output of the 4th NAND gate U4 inserts two inputs of the 5th NAND gate U5, the output of the 6th NAND gate U6 inserts two inputs of the 7th NAND gate U7, the output of the 8th NAND gate U8 inserts two inputs of the 9th NAND gate U9,9 pin of PIC16F716 single-chip microcomputer produce the SPWM waveform of half-sinusoid, 11 pin of single-chip microcomputer produce opposite with the 9th pin and have increased the SPWM waveform in dead band, 8 pin of single-chip microcomputer or remove 9 pin, arbitrary I/O mouth beyond 11 pin produces and the actual identical square wave of output frequency, 8 of the single-chip microcomputer of requiring of user, 9,11 pin insert NAND gate; PIC16F716 single-chip microcomputer 9 pin connect the 4th NAND gate U4 and the 8th NAND gate U8, single-chip microcomputer 11 pin connect the second NAND gate U2 and the 6th NAND gate U6, a road of single-chip microcomputer 8 pin connect the 6th NAND gate U6 and the 9th NAND gate U9, another road of single-chip microcomputer 8 pin through resistance R 2 be connected the second NAND gate U2 and the 5th NAND gate U5 after triode Q1 swings to conversion.
SPWM pulse-generating circuit of the present invention produces three basic waveforms, and three basic waveforms produce four road SPWM impulse trains after the conversion of pulse distributor circuit, produces the pure sine wave inverter in order to the power tube that drives in the full-bridge circuit.
The present invention makes the pure sine wave inverter be able to miniaturization for the pure sine wave inverter provides an efficient simple SPWM pulse generation and distributor circuit, has reduced production cost.
Description of drawings
Fig. 1 is one of the embodiment of the present invention circuit diagram.
Fig. 2 is two circuit diagrams of embodiment of the present invention.
Among the figure: 1. pulse-generating circuit, 2. pulse distributor.
Embodiment
As shown in Figure 1, this SPWM pulse generation and distributor circuit mainly connect pulse distributor 2 by pulse-generating circuit 1 and form, and SPWM pulse-generating circuit 1 is the PIC16F716 single-chip microcomputer, and pulse distributor 2 is a NAND gate; The output of the second NAND gate U2 inserts two inputs of the 3rd NAND gate U3, the output of the 4th NAND gate U4 inserts two inputs of the 5th NAND gate U5, the output of the 6th NAND gate U6 inserts two inputs of the 7th NAND gate U7, the output of the 8th NAND gate U8 inserts two inputs of the 9th NAND gate U9,9 pin of PIC16F716 single-chip microcomputer produce the SPWM waveform of half-sinusoid, 11 pin of single-chip microcomputer produce opposite with the 9th pin and have increased the SPWM waveform in dead band, the 8th pin of single-chip microcomputer or remove 9 pin, arbitrary I/O mouth beyond 11 pin produces and the actual identical square wave of output frequency that requires of user, 9 pin of single-chip microcomputer connect the 4th NAND gate U4 and the 8th NAND gate U8,11 pin of single-chip microcomputer connect the second NAND gate U2 and the 6th NAND gate U6,8 pin one tunnel of single-chip microcomputer connect the 6th NAND gate U6 and the 9th NAND gate U9, and another road of 8 pin connects the second NAND gate U2 and the 5th NAND gate U5 after the first NAND gate U1 swings to conversion; Single-chip microcomputer is set to the half-bridge PWM way of output, produce the SPWM waveform of half-sinusoid at the 9th pin of single-chip microcomputer, the 11st pin of single-chip microcomputer produces opposite with the 9th pin and has increased the SPWM waveform in dead band, the fundamental frequency of this SPWM is decided on plant capacity, generally arrive 20KHZ at 1KHZ, set Dead Time simultaneously, generally at 0.4US between the 3US, the 8th pin of single-chip microcomputer or remove 9 pin, arbitrary I/O mouth beyond 11 pin produces the square wave identical with the ac power frequency of user's actual need, conventional have a 50HZ, 60HZ, 400HZ etc., specific requirement on the user is decided, the SPWM signal is sent into the 4th NAND gate U4 and the 8th NAND gate U8, the SPWM signal is sent into the second NAND gate U2 and the 6th NAND gate U6, square-wave signal one tunnel is sent into the 6th NAND gate U6 and the 9th NAND gate U9, square-wave signal is also sent into the second NAND gate U2 and the 5th NAND gate U5 after the first NAND gate U1 swings to conversion simultaneously, and three basic waveforms produce four the tunnel in order to drive the SPWM impulse train of power tube in the full-bridge circuit after the NAND gate conversion.
As shown in Figure 2, this SPWM pulse generation and distributor circuit mainly connect pulse distributor 2 by pulse-generating circuit 1 and form, and SPWM pulse-generating circuit 1 is the PIC16F716 single-chip microcomputer, and pulse distributor 2 is a NAND gate; The output of the second NAND gate U2 inserts two inputs of the 3rd NAND gate U3, the output of the 4th NAND gate U4 inserts two inputs of the 5th NAND gate U5, the output of the 6th NAND gate U6 inserts two inputs of the 7th NAND gate U7, the output of the 8th NAND gate U8 inserts two inputs of the 9th NAND gate U9,9 pin of PIC16F716 single-chip microcomputer produce the SPWM waveform of half-sinusoid, 11 pin of single-chip microcomputer produce the opposite SPWM waveform that has partly increased the dead band with the 9th pin, the 8th pin of single-chip microcomputer or remove 9 pin, arbitrary I/O mouth produces and the actual identical square wave of output frequency that requires of user beyond 11 pin, and 9 pin of single-chip microcomputer connect the 4th NAND gate U4 and the 8th NAND gate U8; 11 pin of single-chip microcomputer connect the second NAND gate U2 and the 6th NAND gate U6,8 pin one tunnel of single-chip microcomputer connect the 6th NAND gate U6 and the 9th NAND gate U9, another road of 8 pin through resistance R 2 be connected the second NAND gate U2 and the 5th NAND gate U5 after triode Q1 swings to conversion; Single-chip microcomputer is set to the half-bridge PWM way of output, produce the SPWM waveform of half-sinusoid at the 9th pin of single-chip microcomputer, the 11st pin of single-chip microcomputer produces opposite with the 9th pin and has increased the SPWM waveform in dead band, the fundamental frequency of this SPWM is decided on plant capacity, generally at 1KHZ between the 20KHZ, set Dead Time simultaneously, generally at 0.4US between the 3US, the 8th pin of single-chip microcomputer or remove 9 pin, arbitrary I/O mouth produces the square wave identical with the ac power frequency of user's actual need beyond 11 pin, conventional have a 50HZ, 60HZ, 400HZ etc., specific requirement on the user is decided, the SPWM signal is sent into the 4th NAND gate U4 and the 8th NAND gate U8, the SPWM signal is sent into the second NAND gate U2 and the 6th NAND gate U6, square-wave signal one tunnel is sent into the 6th NAND gate U6 and the 9th NAND gate U9, simultaneously the second NAND gate U2 and the 5th NAND gate U5 are sent in another road of square wave after resistance R 2 and triode Q1 swing to conversion, and three basic waveforms produce four tunnel SPWM impulse trains in order to power tube in the driving full-bridge circuit after the NAND gate conversion.
The present invention realizes the output voltage stabilizing to inverter by adjusting the pulse duration of SPWM.
Claims (2)
1. the SPWM pulse generation and the distributor circuit of pure sine wave inverter, it is characterized in that: this circuit mainly connects pulse distributor (2) by pulse-generating circuit (1) and forms, pulse-generating circuit (1) is the PIC16F716 single-chip microcomputer, and pulse distributor (2) is a NAND gate; The output of second NAND gate (U2) inserts two inputs of the 3rd NAND gate (U3), the output of the 4th NAND gate (U4) inserts two inputs of the 5th NAND gate (U5), the output of the 6th NAND gate (U6) inserts two inputs of the 7th NAND gate (U7), the output of the 8th NAND gate (U8) inserts two inputs of the 9th NAND gate (U9), 9 pin of PIC16F716 single-chip microcomputer produce the SPWM waveform of half-sinusoid, 11 pin of single-chip microcomputer produce opposite with the 9th pin and have increased the SPWM waveform in dead band, 8 pin of single-chip microcomputer or remove 9 pin, arbitrary I/O mouth beyond 11 pin produces and the actual identical square wave of output frequency, 8 of the single-chip microcomputer of requiring of user, 9,11 pin insert NAND gate; PIC716F716 single-chip microcomputer 9 pin connect the 4th NAND gate (U4) and the 8th NAND gate (U8), single-chip microcomputer 11 pin connect second NAND gate (U2) and the 6th NAND gate (U6), single-chip microcomputer 8 pin one tunnel connect the 6th NAND gate (U6) and the 9th NAND gate (U9), and another road first NAND gate (U1) of single-chip microcomputer 8 pin connects second NAND gate (U2) and the 5th NAND gate (U5).
2. the SPWM pulse generation and the distributor circuit of pure sine wave inverter, it is characterized in that: this circuit mainly connects pulse distributor (2) by pulse-generating circuit (1) and forms, pulse-generating circuit (1) is the PIC16F716 single-chip microcomputer, and pulse distributor (2) is a NAND gate; The output of second NAND gate (U2) inserts two inputs of the 3rd NAND gate (U3), the output of the 4th NAND gate (U4) inserts two inputs of the 5th NAND gate (U5), the output of the 6th NAND gate (U6) inserts two inputs of the 7th NAND gate (U7), the output of the 8th NAND gate (U8) inserts two inputs of the 9th NAND gate (U9), 9 pin of PIC16F716 single-chip microcomputer produce the SPWM waveform of half-sinusoid, 11 pin of single-chip microcomputer produce opposite with the 9th pin and have increased the SPWM waveform in dead band, 8 pin of single-chip microcomputer or remove 9 pin, arbitrary I/O mouth beyond 11 pin produces and the actual identical square wave of output frequency, 8 of the single-chip microcomputer of requiring of user, 9,11 pin insert NAND gate; PIC16F716 single-chip microcomputer 9 pin connect the 4th NAND gate (U4) and the 8th NAND gate (U8), single-chip microcomputer 11 pin connect second NAND gate (U2) and the 6th NAND gate (U6), a road of single-chip microcomputer 8 pin connect the 6th NAND gate (U6) and the 9th NAND gate (U9), another road of single-chip microcomputer 8 pin through resistance (R2) be connected second NAND gate (U2) and the 5th NAND gate (U5) after triode (Q1) is swung to conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610096237XA CN1937387B (en) | 2006-09-30 | 2006-09-30 | SPWM pulse generating and distributing circuit for pure sine wave inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610096237XA CN1937387B (en) | 2006-09-30 | 2006-09-30 | SPWM pulse generating and distributing circuit for pure sine wave inverter |
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| Publication Number | Publication Date |
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| CN1937387A CN1937387A (en) | 2007-03-28 |
| CN1937387B true CN1937387B (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200610096237XA Expired - Fee Related CN1937387B (en) | 2006-09-30 | 2006-09-30 | SPWM pulse generating and distributing circuit for pure sine wave inverter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103516239B (en) * | 2012-06-29 | 2016-04-20 | 通用电气公司 | The converter modulation system improved and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247387Y (en) * | 1995-05-08 | 1997-02-12 | 武汉高创自动控制技术公司 | Digital sine-wave counterchange power supply |
| US6040989A (en) * | 1999-05-06 | 2000-03-21 | Emerson Electric Co | Device and method for generating three-phase sine waves using two pulse-width modulators |
| US20030193821A1 (en) * | 2002-04-10 | 2003-10-16 | Michael Krieger | Inverter for producing a true sine wave |
| CN1553562A (en) * | 2003-12-19 | 2004-12-08 | 清华大学 | Three-phase pure sinusoidal wave inverse power supply system with digital control |
-
2006
- 2006-09-30 CN CN200610096237XA patent/CN1937387B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247387Y (en) * | 1995-05-08 | 1997-02-12 | 武汉高创自动控制技术公司 | Digital sine-wave counterchange power supply |
| US6040989A (en) * | 1999-05-06 | 2000-03-21 | Emerson Electric Co | Device and method for generating three-phase sine waves using two pulse-width modulators |
| US20030193821A1 (en) * | 2002-04-10 | 2003-10-16 | Michael Krieger | Inverter for producing a true sine wave |
| CN1553562A (en) * | 2003-12-19 | 2004-12-08 | 清华大学 | Three-phase pure sinusoidal wave inverse power supply system with digital control |
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| CN1937387A (en) | 2007-03-28 |
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Application publication date: 20070328 Assignee: HUAIAN DINGXIN ELECTRONICS CO., LTD. Assignor: Zhang Qiangsheng Contract record no.: 2013320000275 Denomination of invention: SPWM pulse generating and distributing circuit for pure sine wave inverter Granted publication date: 20101208 License type: Exclusive License Record date: 20130401 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
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Assignee: HUAIAN DINGXIN ELECTRONICS CO., LTD. Assignor: Zhang Qiangsheng Contract record no.: 2013320000275 Date of cancellation: 20130930 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
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Effective date of registration: 20160302 Address after: Four road 215533 Jiangsu Changshu Economic Development Zone No. 11 Science Park Patentee after: SUZHOU DAHE ENERGY TECHNOLOGY CO., LTD. Address before: 223002 Huaian province Jiangsu City Fuchun garden Qingpu District B03-201 Patentee before: Zhang Qiangsheng |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20170930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |