CN102545667A - Adjustment method of shunt chopper output voltage - Google Patents
Adjustment method of shunt chopper output voltage Download PDFInfo
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- CN102545667A CN102545667A CN2012100281311A CN201210028131A CN102545667A CN 102545667 A CN102545667 A CN 102545667A CN 2012100281311 A CN2012100281311 A CN 2012100281311A CN 201210028131 A CN201210028131 A CN 201210028131A CN 102545667 A CN102545667 A CN 102545667A
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Abstract
The invention discloses an adjustment method of shunt chopper output voltage, which comprises the following steps of: building an output voltage setting device; calculating a new scale factor by utilizing a voltage target value, a current voltage value and a current scale factor of an inverter, and sending the new scale factor to a microprocessor (2); repeatedly calculating the scale factor, and sending the scale factor to the microprocessor (2) until output voltage of the inverter is realized to be within a deviation area allowed by the voltage target value; calculating a new integral coefficient by utilizing stabilized voltage precision, a maximum value allowed by the stabilized voltage precision and a current integral coefficient under the condition of the inverter with rated load, and sending the new integral coefficient to the microprocessor (2); and repeatedly calculating the integral coefficient, and sending the integral coefficient to the microprocessor (2) until the stabilized voltage precision is realized to be within the maximum value allowed by the precision. The method has the capability of quickly setting the output voltage of the inverter, so that the setting speed is improved. An algorithm can be compiled, autocompletion can be realized by utilizing an upper computer, the degree of accuracy is improved, and the labor cost can be effectively reduced.
Description
Technical field
The present invention relates to a kind of voltage adjusting method, particularly a kind of control method of shunt chopper output voltage.
Background technology
In recent years, digital control technology has obtained extensive use in inverter design.Circulation when reducing many inverter parallels between the module, the output voltage of each inverter unanimity of should trying one's best.Because the component parameter of each inverter hardware circuit exists individual difference, cause the size and the precision of voltage regulation of initial output voltage of each module variant, even difference is bigger.Therefore, before the module parallel connection, need to adjust usually, realize the size of each inverter output voltage and the purpose of precision of voltage regulation basically identical through output voltage.And inverter output voltage has two parameter determining, i.e. proportionality coefficient Kp and integral coefficient Ki.So, just can reach the purpose of regulating inverter output voltage through regulating Kp and Ki.
The conventional method that inverter output voltage is regulated is: according to the current magnitude of voltage and the desired value of inverter, in software program, revise proportionality coefficient Kp and integral coefficient Ki repeatedly, compiling and programming program power up checking afterwards.If do not reach desired value, then revise repeatedly and verify.Process is loaded down with trivial details, needs the repeated multiple times programming, has reduced the debugging operating efficiency, has also reduced the useful life of microprocessor in the inverter simultaneously.
Summary of the invention
The object of the invention is to provide a kind of control method of shunt chopper output voltage, solves through the loaded down with trivial details problem of software adjustment inverter output voltage process.
A kind of concrete steps of control method of shunt chopper output voltage are:
The first step makes up output voltage regulator
Output voltage regulator comprises: resistance R, capacitor C, E
2PROM chip, microprocessor, MAX3232 chip, host computer.One end of capacitor C, E
2The Vcc pin of PROM chip is connected the other end of capacitor C, E with power supply+3.3V end
2The WP pin ground connection of PROM chip.E
2The SCL pin of PROM chip is connected E with the IO1 pin of microprocessor
2The SDA pin of PROM chip, the IO2 pin of microprocessor are connected with an end of resistance R, and the other end of resistance R is connected with power supply+3.3V end.The TX pin of microprocessor is connected with the T1IN pin of MAX3232 chip, and the RX pin of microprocessor is connected with the R1OUT pin of MAX3232 chip.The T1OUT pin of MAX3232 chip is connected with the RX1 pin of host computer, and the R1IN pin of MAX3232 chip is connected with the TX1 pin of host computer.
The second step host computer sends target voltage values to microprocessor
Host computer sends voltage-target to microprocessor, is designated as Um1.
The 3rd step host computer reads the inverter relevant parameter
Host computer sends reading order to microprocessor, and current output voltage, the proportionality coefficient of inverter are noted, and is designated as Uo1, Kp1 respectively.
The 4th step host computer sends to microprocessor with the proportionality coefficient desired value
Calculating K p1*Um1/Uo1 is designated as Kp2, and it is sent to microprocessor as new proportionality coefficient.
The 5th step host computer compares the output voltage and the voltage-target of inverter
Host computer reads the current output voltage of inverter, if output voltage within the positive and negative permissible variation scope of voltage-target the time, is then regulated the end-of-job of proportionality coefficient, current proportionality coefficient is designated as Kp_ok; If when not satisfying the condition of output voltage within voltage-target Um1 permissible variation scope, then calculate the proportionality coefficient desired value repeatedly, send to microprocessor, until realize that output voltage is till within the voltage-target permissible variation scope.If, still regulate the fall short scope through repeatedly regulating, explain that the hardware parameter of inverter does not match, then stop to regulate and returning relevant departments and keep in repair.
The 6th step host computer reads the inverter relevant parameter under the nominal load situation
Inverter band nominal load, host computer sends reading order to microprocessor, and current output voltage, proportionality coefficient, integral coefficient, the precision of voltage regulation of inverter are noted, and is designated as Uo1, Kp, Ki1, Jw1 respectively; The maximum that the precision of voltage regulation is allowed is designated as Jwm.
The 7th step host computer sends to microprocessor with the integral coefficient desired value
Calculating K i1+ (Jw1-Jwm) * Kp/T is designated as Ki2, and it is sent to microprocessor as new integral coefficient, and wherein T is the set time constant of inverter.
The 8th step host computer compares the precision of voltage regulation of inverter and the maximum of permission
Host computer reads the current precision of voltage regulation of inverter, if the precision of voltage regulation within allowing the maximum of precision the time, is then regulated the end-of-job of integral coefficient, current integral coefficient is designated as Ki_ok; If when not satisfying the condition of the precision of voltage regulation within allowing the maximum of precision, then calculate the integral coefficient desired value repeatedly, send to microprocessor, until realize that the precision of voltage regulation is till within the maximum that allows precision.
Circulation several times through above-mentioned steps is regulated, and the size of realization inverter output voltage and the precision of voltage regulation are within the permissible variation scope of target zone.
The present invention has the ability of the inverter output voltage of adjusting fast, and the conventional method with respect to revising microprocessor software parameter and programming program has repeatedly improved the speed of adjusting greatly.Simultaneously method of the present invention can be compiled into algorithm, utilize host computer to accomplish automatically fully, when improving accuracy, effectively reduce cost of labor.
Description of drawings
The circuit diagram of the control method of a kind of shunt chopper output voltage of Fig. 1.
1.E
2PROM chip 2. microprocessor 3.MAX3232 chips 4. host computers.
Embodiment
A kind of concrete steps of control method of shunt chopper output voltage are:
The first step is built output voltage regulator
Output voltage regulator comprises: resistance R, capacitor C, E
2PROM chip, microprocessor, MAX3232 chip, host computer.One end of capacitor C, E
2The Vcc pin of PROM chip is connected the other end of capacitor C, E with power supply+3.3V end
2The WP pin ground connection of PROM chip.E
2The SCL pin of PROM chip is connected E with the IO1 pin of microprocessor
2The SDA pin of PROM chip, the IO2 pin of microprocessor are connected with an end of resistance R, and the other end of resistance R is connected with power supply+3.3V end.The TX pin of microprocessor is connected with the T1IN pin of MAX3232 chip, and the RX pin of microprocessor is connected with the R1OUT pin of MAX3232 chip.The T1OUT pin of MAX3232 chip is connected with the RX1 pin of host computer, and the R1IN pin of MAX3232 chip is connected with the TX1 pin of host computer.
The second step host computer sends target voltage values to microprocessor
Host computer sends voltage-target to microprocessor, is designated as Um1.
The 3rd step host computer reads the inverter relevant parameter
Host computer sends reading order to microprocessor, and current output voltage, the proportionality coefficient of inverter are noted, and is designated as Uo1, Kp1 respectively.
The 4th step host computer sends to microprocessor with the proportionality coefficient desired value
Calculating K p1*Um1/Uo1 is designated as Kp2, and it is sent to microprocessor as new proportionality coefficient.
The 5th step host computer compares the output voltage and the voltage-target of inverter
Host computer reads the current output voltage of inverter, if output voltage within the positive and negative permissible variation scope of voltage-target the time, is then regulated the end-of-job of proportionality coefficient, current proportionality coefficient is designated as Kp_ok.
The 6th step host computer reads the inverter relevant parameter under the nominal load situation
Inverter band nominal load, host computer sends reading order to microprocessor, and current output voltage, proportionality coefficient, integral coefficient, the precision of voltage regulation of inverter are noted, and is designated as Uo1, Kp, Ki1, Jw1 respectively; The maximum that the precision of voltage regulation is allowed is designated as Jwm.
The 7th step host computer sends to microprocessor with the integral coefficient desired value
Calculating K i1+ (Jw1-Jwm) * Kp/T is designated as Ki2, and it is sent to microprocessor as new integral coefficient, and wherein T is the set time constant of inverter.
The 8th step host computer compares the precision of voltage regulation of inverter and the maximum of permission
Host computer reads the current precision of voltage regulation of inverter, if the precision of voltage regulation within allowing the maximum of precision the time, is then regulated the end-of-job of integral coefficient, current integral coefficient is designated as Ki_ok.
Circulation several times through above-mentioned steps is regulated, and the size of realization inverter output voltage and the precision of voltage regulation are within the permissible variation scope of target zone.
Claims (1)
1. the control method of a shunt chopper output voltage is characterized in that the concrete steps of this method are:
The first step is built output voltage regulator
Output voltage regulator comprises: resistance R, capacitor C, E
2PROM chip (1), microprocessor (2), MAX3232 chip (3), host computer (4); One end of capacitor C, E
2The Vcc pin of PROM chip (1) is connected the other end of capacitor C, E with power supply+3.3V end
2The WP pin ground connection of PROM chip (1); E
2The SCL pin of PROM chip (1) is connected E with the IO1 pin of microprocessor (2)
2The IO2 pin of the SDA pin of PROM chip (1), microprocessor (2) is connected with an end of resistance R, and the other end of resistance R is connected with power supply+3.3V end; The TX pin of microprocessor (2) is connected with the T1IN pin of MAX3232 chip (3), and the RX pin of microprocessor (2) is connected with the R1OUT pin of MAX3232 chip (3); The T1OUT pin of MAX3232 chip (3) is connected with the RX1 pin of host computer (4), and the R1IN pin of MAX3232 chip (3) is connected with the TX1 pin of host computer (4);
The second step host computer (4) sends target voltage values to microprocessor (2)
Host computer (4) sends voltage-target to microprocessor (2), is designated as Um1;
The 3rd step host computer (4) reads the inverter relevant parameter
Host computer (4) sends reading order to microprocessor (2), and current output voltage, the proportionality coefficient of inverter are noted, and is designated as Uo1, Kp1 respectively;
The 4th step host computer (4) sends to microprocessor (2) with the proportionality coefficient desired value
Calculating K p1*Um1/Uo1 is designated as Kp2, and it is sent to microprocessor (2) as new proportionality coefficient;
The 5th step host computer (4) compares the output voltage and the voltage-target of inverter
Host computer (4) reads the current output voltage of inverter, if output voltage within the positive and negative permissible variation scope of voltage-target the time, is then regulated the end-of-job of proportionality coefficient, current proportionality coefficient is designated as Kp_ok; If when not satisfying the condition of output voltage within voltage-target Um1 permissible variation scope, then calculate the proportionality coefficient desired value repeatedly, send to microprocessor (2), until realize that output voltage is till within the voltage-target permissible variation scope; If, still regulate the fall short scope through repeatedly regulating, explain that the hardware parameter of inverter does not match, then stop to regulate and returning relevant departments and keep in repair;
The 6th step host computer (4) reads the inverter relevant parameter under the nominal load situation
Inverter band nominal load, host computer (4) sends reading order to microprocessor (2), and current output voltage, proportionality coefficient, integral coefficient, the precision of voltage regulation of inverter are noted, and is designated as Uo1, Kp, Ki1, Jw1 respectively; The maximum that the precision of voltage regulation is allowed is designated as Jwm;
The 7th step host computer (4) sends to microprocessor (2) with the integral coefficient desired value
Calculating K i1+ (Jw1-Jwm) * Kp/T is designated as Ki2, and it is sent to microprocessor (2) as new integral coefficient, and wherein T is the set time constant of inverter;
The 8th step host computer (4) compares the precision of voltage regulation of inverter and the maximum of permission
Host computer (4) reads the current precision of voltage regulation of inverter, if the precision of voltage regulation within allowing the maximum of precision the time, is then regulated the end-of-job of integral coefficient, current integral coefficient is designated as Ki_ok; If when not satisfying the condition of the precision of voltage regulation within allowing the maximum of precision, then calculate the integral coefficient desired value repeatedly, send to microprocessor (2), until realize that the precision of voltage regulation is till within the maximum that allows precision;
Circulation several times through above-mentioned steps is regulated, and the size of realization inverter output voltage and the precision of voltage regulation are within the permissible variation scope of target zone.
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| CN201210028131.1A CN102545667B (en) | 2012-02-09 | 2012-02-09 | Adjustment method of shunt chopper output voltage |
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| CN201210028131.1A CN102545667B (en) | 2012-02-09 | 2012-02-09 | Adjustment method of shunt chopper output voltage |
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| CN102545667A true CN102545667A (en) | 2012-07-04 |
| CN102545667B CN102545667B (en) | 2014-06-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248251A (en) * | 2013-05-17 | 2013-08-14 | 成都英格瑞德电气有限公司 | Automatic variable coefficient control method for inverter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56146210A (en) * | 1980-04-16 | 1981-11-13 | Aichi Electric Mfg Co Ltd | Controlling system for voltage |
| CN101334428A (en) * | 2008-05-16 | 2008-12-31 | 东北大学 | Method and device for separating voltage electric current signal of electrical power system |
| CN101527462A (en) * | 2008-12-30 | 2009-09-09 | 中国电力科学研究院 | Digital control device of converter |
| CN101667787A (en) * | 2009-09-30 | 2010-03-10 | 大连光洋科技工程有限公司 | Voltage oriented energy bidirectional flowing rectifier control device |
-
2012
- 2012-02-09 CN CN201210028131.1A patent/CN102545667B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56146210A (en) * | 1980-04-16 | 1981-11-13 | Aichi Electric Mfg Co Ltd | Controlling system for voltage |
| CN101334428A (en) * | 2008-05-16 | 2008-12-31 | 东北大学 | Method and device for separating voltage electric current signal of electrical power system |
| CN101527462A (en) * | 2008-12-30 | 2009-09-09 | 中国电力科学研究院 | Digital control device of converter |
| CN101667787A (en) * | 2009-09-30 | 2010-03-10 | 大连光洋科技工程有限公司 | Voltage oriented energy bidirectional flowing rectifier control device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248251A (en) * | 2013-05-17 | 2013-08-14 | 成都英格瑞德电气有限公司 | Automatic variable coefficient control method for inverter |
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| CN102545667B (en) | 2014-06-18 |
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