CN102447412A - Digital control device of inverting power supply based on digital signal processing - Google Patents
Digital control device of inverting power supply based on digital signal processing Download PDFInfo
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- CN102447412A CN102447412A CN2011104313016A CN201110431301A CN102447412A CN 102447412 A CN102447412 A CN 102447412A CN 2011104313016 A CN2011104313016 A CN 2011104313016A CN 201110431301 A CN201110431301 A CN 201110431301A CN 102447412 A CN102447412 A CN 102447412A
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Abstract
The invention provides a digital control device of an inverting power supply based on digital signal processing, and aims at providing an inverting device which has a simple circuit design, can overcome the temperature drift of the parameter of an analog circuit, is flexible to control, can easily realize an advanced control technology and has reliable performance. The device comprises a main circuit and a control circuit, wherein the main circuit comprises a rectifying unit, an inverting unit and a filtering unit which are sequentially connected; and the control unit comprises a voltage feedback unit which is connected with an output end and is used for collecting output voltage and a current feedback unit which is used for collecting current. The digital control device of the inverting power supply based on the digital signal processing also comprises a digital signal processing unit, a sine pulse width modulation (SPWM) signal module which is connected with the digital signal processing unit and an isolating drive which is used for the photoelectric isolation of the SPWM signal module of the control unit from the inverting unit of the main circuit.
Description
Technical field
The present invention relates to electronic technology field, a kind of inverter numerical control device based on Digital Signal Processing is provided.
Background technology
Existing inverter in the market all is to realize inversion through simulation control mostly; And this mode is structure relative complex and have analog circuit parameters temperature drift not only; And digital control have can simplify hardware circuit design, overcome analog circuit parameters temperature drift, control is easy to realize advantages such as advanced control technology, dependable performance, reduction construction cycle flexibly; And develop rapidly along with novel electric power electric device and digital processing unit; Numerically controlled inverter is used increasingly extensive, power supply development trend after becoming.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, control flexibly, the inverter numerical control device based on Digital Signal Processing of dependable performance.
The present invention is for realizing that above-mentioned purpose adopts following technical scheme:
A kind of inverter numerical control device based on Digital Signal Processing is characterized in that: comprise main circuit and control circuit, said main circuit comprises rectification unit, inversion unit and the filter unit that is linked in sequence; Said control unit comprises the voltage feedback unit and the current feedback unit of gathering electric current of the collection output voltage that is connected with output, the isolation drive that the inversion unit photoelectricity of the SPWM signaling module that also comprise digital signal processing unit, is connected with digital signal processing unit, the SPWM signaling module that is used for control unit and main circuit is isolated;
Said rectification unit will be obtained alternating current from electrical network and after rectification, supply with inverter circuit; Inverter circuit is under the effect of the drive signal of SPWM signal element output; Direct current after the rectification is become the alternating current of voltage stabilization and frequency stabilization; Through supply load after the filtering; Feedback is given the digital signal processing unit processing behind output voltage and electric current process voltage feedback unit and the current feedback unit sampling, and digital signal processing unit carries out the control corresponding algorithm process to sampled signal, and output SPWM modulation signal makes output voltage stabilization in desired value.
Said inversion unit adopts full bridge inverter.
Described full bridge inverter selects for use the MOS pipe to make IRFP460 as switching device.
SPWM signal element adopts the R2110 chip for driving to produce drive signal.
Said digital signal processing unit adopts TMS320LF2407A.
The present invention has following beneficial effect:
The present invention is simple in structure, overcome analog circuit parameters temperature drift, control is easy to realize advantages such as advanced control technology, dependable performance, reduction construction cycle flexibly.
Description of drawings
Fig. 1 is a system construction drawing of the present invention.
Embodiment
A kind of inverter numerical control device based on Digital Signal Processing is characterized in that: comprise main circuit and control circuit, said main circuit comprises rectification unit, inversion unit and the filter unit that is linked in sequence; Said control unit comprises the voltage feedback unit and the current feedback unit of gathering electric current of the collection output voltage that is connected with output, the isolation drive that the inversion unit photoelectricity of the SPWM signaling module that also comprise digital signal processing unit, is connected with digital signal processing unit, the SPWM signaling module that is used for control unit and main circuit is isolated;
Said rectification unit will be obtained alternating current from electrical network and after rectification, supply with inverter circuit; Inverter circuit is under the effect of the drive signal of SPWM signal element output; Direct current after the rectification is become the alternating current of voltage stabilization and frequency stabilization; Through supply load after the filtering; Feedback is given the digital signal processing unit processing behind output voltage and electric current process voltage feedback unit and the current feedback unit sampling, and digital signal processing unit carries out the control corresponding algorithm process to sampled signal, and output SPWM modulation signal makes output voltage stabilization in desired value.
Said inversion unit adopts full bridge inverter.
Described full bridge inverter selects for use the MOS pipe to make IRFP460 as switching device.
SPWM signal element adopts the R2110 chip for driving to produce drive signal.
Said digital signal processing unit adopts TMS320LF2407A.
Isolation drive
Isolation drive is like figure, and the basic function of drive circuit should guarantee to provide the grid lotus that needs with switch performance that guarantees device and the isolation that realizes main circuit and control circuit to the MOSFET grid.The present invention adopts the IR2110 chip for driving, and it is a kind of binary channels high pressure, high-speed driver, has the bootstrapping suspended power supply, only just can drive the power tube of two brachium pontis with one road power supply.Because IR2110 itself does not possess the effect of isolation, need add buffer circuit at front end.This paper adopts high speed photo coupling TLP550 to do isolated component.
Claims (5)
1. inverter numerical control device based on Digital Signal Processing, it is characterized in that: comprise main circuit and control circuit, said main circuit comprises rectification unit, inversion unit and the filter unit that is linked in sequence; Said control unit comprises the voltage feedback unit and the current feedback unit of gathering electric current of the collection output voltage that is connected with output, the isolation drive that the inversion unit photoelectricity of the SPWM signaling module that also comprise digital signal processing unit, is connected with digital signal processing unit, the SPWM signaling module that is used for control unit and main circuit is isolated;
Said rectification unit will be obtained alternating current from electrical network and after rectification, supply with inverter circuit; Inverter circuit is under the effect of the drive signal of SPWM signal element output; Direct current after the rectification is become the alternating current of voltage stabilization and frequency stabilization; Through supply load after the filtering; Feedback is given the digital signal processing unit processing behind output voltage and electric current process voltage feedback unit and the current feedback unit sampling, and digital signal processing unit carries out the control corresponding algorithm process to sampled signal, and output SPWM modulation signal makes output voltage stabilization in desired value.
2. the inverter numerical control device based on Digital Signal Processing according to claim 1 is characterized in that, said inversion unit adopts full bridge inverter.
3. the inverter numerical control device based on Digital Signal Processing according to claim 1 and 2 is characterized in that, described full bridge inverter selects for use the MOS pipe to make IRFP460 as switching device.
4. the inverter numerical control device based on Digital Signal Processing according to claim 1 is characterized in that, SPWM signal element adopts the R2110 chip for driving to produce drive signal.
5. the inverter numerical control device based on Digital Signal Processing according to claim 1 is characterized in that, said digital signal processing unit adopts TMS320LF2407A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104313016A CN102447412A (en) | 2011-12-21 | 2011-12-21 | Digital control device of inverting power supply based on digital signal processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104313016A CN102447412A (en) | 2011-12-21 | 2011-12-21 | Digital control device of inverting power supply based on digital signal processing |
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| Publication Number | Publication Date |
|---|---|
| CN102447412A true CN102447412A (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104313016A Pending CN102447412A (en) | 2011-12-21 | 2011-12-21 | Digital control device of inverting power supply based on digital signal processing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110442177A (en) * | 2019-08-12 | 2019-11-12 | 中国科学技术大学 | A kind of power control system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2854922Y (en) * | 2005-11-02 | 2007-01-03 | 珠海泰坦科技股份有限公司 | Single-phase variable frequency constant-current source |
| CN101976854A (en) * | 2010-11-10 | 2011-02-16 | 江苏中澳光伏能源科技有限公司 | Photovoltaic power generation single phase grid-connected inverter |
| CN202059345U (en) * | 2011-06-07 | 2011-11-30 | 宁德市泰格动力机械有限公司 | Inverter |
| CN202840996U (en) * | 2011-12-21 | 2013-03-27 | 成都众询科技有限公司 | Digital control device of inverting power supply based on digital signal processing |
-
2011
- 2011-12-21 CN CN2011104313016A patent/CN102447412A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2854922Y (en) * | 2005-11-02 | 2007-01-03 | 珠海泰坦科技股份有限公司 | Single-phase variable frequency constant-current source |
| CN101976854A (en) * | 2010-11-10 | 2011-02-16 | 江苏中澳光伏能源科技有限公司 | Photovoltaic power generation single phase grid-connected inverter |
| CN202059345U (en) * | 2011-06-07 | 2011-11-30 | 宁德市泰格动力机械有限公司 | Inverter |
| CN202840996U (en) * | 2011-12-21 | 2013-03-27 | 成都众询科技有限公司 | Digital control device of inverting power supply based on digital signal processing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110442177A (en) * | 2019-08-12 | 2019-11-12 | 中国科学技术大学 | A kind of power control system |
| CN110442177B (en) * | 2019-08-12 | 2020-12-25 | 中国科学技术大学 | Power supply control system |
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Application publication date: 20120509 |