CN2854922Y - Single-phase variable frequency constant-current source - Google Patents
Single-phase variable frequency constant-current source Download PDFInfo
- Publication number
- CN2854922Y CN2854922Y CN 200520066636 CN200520066636U CN2854922Y CN 2854922 Y CN2854922 Y CN 2854922Y CN 200520066636 CN200520066636 CN 200520066636 CN 200520066636 U CN200520066636 U CN 200520066636U CN 2854922 Y CN2854922 Y CN 2854922Y
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- power
- filter
- logic device
- bridge rectifier
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Abstract
The utility model relates to power control field, in particular to a single-phase frequency-variable constant current source, which comprises a power filter, a full-bridge rectifier circuit connected with the power filter, a filter unit connected with the full-bridge rectifier circuit, an inverter module connected with the full-bridge rectifier circuit, a power output filter connected with the inverter module, a current sensor PT and a voltage sensor CT in matched junction with power output terminal, an A/D converter connected with the current sensor PT and voltage sensor CT, a MCU connected with the A/D converter, and a programmable logic device having built-in double-frequency SPWM generating IP core and connected with the MCU and inverter module. The inventive constant current source uses single-phase SPWM generating IP core to lower power consumption of power element, reduces size of power output filter, and effectively guarantees output stability of power supply.
Description
[technical field]
The utility model relates to power supply control field, relates in particular to a kind of single-phase frequency-conversion constant-current source.
[background technology]
Along with the development of power electronic technology, the detection control apparatus of various power equipments and various high-power instrument and meter all need a kind ofly possess the frequency-conversion constant-current device of high-power, pinpoint accuracy output as injecting signal source and power output source.And on the present market, the frequency-conversion constant-current power supply that high-power output can be provided seldom can provide the shortage especially of high accuracy output.The inverter of simultaneously existing interchange output exists unfavorable factors such as power output is little, harmonic content big, unstable properties to cause power consumption equipment and checkout gear error big, and the low phenomenon of making erroneous judgement malfunction even damage equipment of accuracy can be found everywhere.
[utility model content]
The purpose of this utility model is to provide a kind of efficient, precision is high and the single-phase frequency-conversion constant-current source of stable output.
For achieving the above object, the utility model adopts following technical scheme:
A kind of single-phase frequency-conversion constant-current source comprises power-supply filter, the full bridge rectifier that is connected with power-supply filter, the filter unit that is connected with full bridge rectifier, the inversion module that is connected with full bridge rectifier, the power supply output filter that is connected with inversion module, the current sensor PT and the voltage sensor CT that are connected with the power output end coupling, the analog to digital converter that is connected with voltage sensor CT with current sensor PT, the MCU that is connected with analog to digital converter, with the programmable logic device that MUC and inversion module are connected, described programmable logic device is embedded with two frequency multiplication SPWM IP kernel takes place.
Described inversion module is connected with the programmed logic device that is embedded with two frequency multiplication Single-phase SPWM generation IP kernels by four road photoelectric isolating circuits.
Described inversion module is connected with the programmed logic device that is embedded with two frequency multiplication three-phase SPWM generation IP kernel by 12 road photoelectric isolating circuits.
Described programmable logic device is FPGA or CPLD.
Compared with prior art, Single-phase SPWM generation IP kernel has been used in the single-phase frequency-conversion constant-current of the utility model source, has reduced the power consumption of power device in the inversion module, has reduced the volume of power supply output filter; Also effectively guaranteed the stability of power supply output in addition.
[description of drawings]
Fig. 1 is the single-phase frequency-conversion constant-current of a utility model source theory diagram.
[embodiment]
See also shown in Figure 1, a kind of single-phase frequency-conversion constant-current source comprises power-supply filter, the full bridge rectifier that is connected with power-supply filter, the filter unit that is connected with full bridge rectifier, the inversion module that is connected with full bridge rectifier, the power supply output filter that is connected with inversion module, the current sensor PT and the voltage sensor CT that are connected with the power output end coupling, the analog to digital converter that is connected with voltage sensor CT with current sensor PT, the MCU that is connected with analog to digital converter, with the programmable logic device that MUC and inversion module are connected, described programmable logic device is embedded with two frequency multiplication SPWM IP kernel takes place.
In order to reach the purpose of isolation, inversion module is connected with the programmed logic device that is embedded with two frequency multiplication Single-phase SPWM generation IP kernels by four road photoelectric isolating circuits.In other embodiments, inversion module can be connected with the programmed logic device that is embedded with two frequency multiplication three-phase SPWM generation IP kernel by 12 road photoelectric isolating circuits.Programmable logic device is FPGA or CPLD.
Four road SPWM pulses output control inversion module of FPGA is realized electric current output, current output value is delivered to analog to digital converter ADC at a high speed after by current sensor CT conversion, sampled value is delivered among the MCU after converting, by MCU the current value and the set point that collect are carried out the definite pulse modulation amplitude of PID calculating, the pulse modulation range value of determining is written to realizes current closed-loop control among the FPGA again.The adjusting of supply frequency can preestablish in program as required also can be given by the outside by keyboard.
Civil power is through power-supply filter, full bridge rectifier, supply with inversion module through behind the filter unit then, the control of being finished inversion unit by MUC and the FPGA that has embedded two frequency multiplication Single-phase SPWM generation IP kernels realizes constant current output again, direct supply load behind the output current process power supply output filter.
The utility model has been introduced a kind of single-phase frequency-conversion constant-current source by being example with two frequency multiplication Single-phase SPWM generation IP kernels, and this can not be considered to the restriction to the utility model claim.If those skilled in the art has made change unsubstantiality, conspicuous or improvement according to the utility model, all should belong to the scope of the utility model claim protection.
Claims (4)
1, a kind of single-phase frequency-conversion constant-current source, it is characterized in that: above-mentioned constant-current source comprises power-supply filter, the full bridge rectifier that is connected with power-supply filter, the filter unit that is connected with full bridge rectifier, the inversion module that is connected with full bridge rectifier, the power supply output filter that is connected with inversion module, the current sensor PT and the voltage sensor CT that are connected with the power output end coupling, the analog to digital converter that is connected with voltage sensor CT with current sensor PT, the MCU that is connected with analog to digital converter, with the programmable logic device that MUC and inversion module are connected, described programmable logic device is embedded with two frequency multiplication SPWM IP kernel takes place.
2, single-phase frequency-conversion constant-current according to claim 1 source, it is characterized in that: described inversion module is connected with the programmed logic device that is embedded with two frequency multiplication Single-phase SPWM generation IP kernels by four road photoelectric isolating circuits.
3, single-phase frequency-conversion constant-current according to claim 1 source is characterized in that: described inversion module by 12 road photoelectric isolating circuits be embedded with the programmed logic device that IP kernel takes place two frequency multiplication three-phase SPWM and be connected.
4, according to any described single-phase frequency-conversion constant-current source of claim 1 to 3, it is characterized in that: described programmable logic device is FPGA or CPLD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520066636 CN2854922Y (en) | 2005-11-02 | 2005-11-02 | Single-phase variable frequency constant-current source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520066636 CN2854922Y (en) | 2005-11-02 | 2005-11-02 | Single-phase variable frequency constant-current source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2854922Y true CN2854922Y (en) | 2007-01-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520066636 Expired - Fee Related CN2854922Y (en) | 2005-11-02 | 2005-11-02 | Single-phase variable frequency constant-current source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2854922Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312737A (en) * | 2011-03-15 | 2012-01-11 | 隆鑫通用动力股份有限公司 | Frequency doubling inversing method and device for internal combustion engine driven generator |
| CN102447412A (en) * | 2011-12-21 | 2012-05-09 | 成都众询科技有限公司 | Digital control device of inverting power supply based on digital signal processing |
| CN103095148A (en) * | 2011-10-28 | 2013-05-08 | 株式会社安川电机 | Power conversion device |
| CN104852557A (en) * | 2015-06-12 | 2015-08-19 | 扬州大学 | Digital-analog hybrid phase-shift frequency-multiplication modulation method for power converter |
| CN107482925A (en) * | 2017-08-28 | 2017-12-15 | 广西电网有限责任公司电力科学研究院 | A kind of frequency-conversion constant-current source follower circuit |
| CN107515321A (en) * | 2016-06-16 | 2017-12-26 | 浙江正泰电器股份有限公司 | The method of the output current response time of constant current source control system and shortening constant-current source |
| CN109264316A (en) * | 2018-10-29 | 2019-01-25 | 安徽中科光电色选机械有限公司 | A kind of more vibrator control devices of color selector |
| CN111464004A (en) * | 2020-05-24 | 2020-07-28 | 浙江千河智能科技有限公司 | Digital power supply and control method thereof |
-
2005
- 2005-11-02 CN CN 200520066636 patent/CN2854922Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012122895A3 (en) * | 2011-03-15 | 2012-11-08 | 隆鑫通用动力股份有限公司 | Multiple-frequency inversion method and control apparatus for internal-combustion driven generator |
| CN102312737B (en) * | 2011-03-15 | 2013-06-19 | 隆鑫通用动力股份有限公司 | Frequency doubling inversing method and device for internal combustion engine driven generator |
| US8712666B2 (en) | 2011-03-15 | 2014-04-29 | Loncin Motor Co., Ltd. | Multiple-frequency inversion method and control apparatus for internal combustion engine driven generator |
| CN102312737A (en) * | 2011-03-15 | 2012-01-11 | 隆鑫通用动力股份有限公司 | Frequency doubling inversing method and device for internal combustion engine driven generator |
| CN103095148B (en) * | 2011-10-28 | 2015-12-02 | 株式会社安川电机 | Power inverter |
| CN103095148A (en) * | 2011-10-28 | 2013-05-08 | 株式会社安川电机 | Power conversion device |
| CN102447412A (en) * | 2011-12-21 | 2012-05-09 | 成都众询科技有限公司 | Digital control device of inverting power supply based on digital signal processing |
| CN104852557A (en) * | 2015-06-12 | 2015-08-19 | 扬州大学 | Digital-analog hybrid phase-shift frequency-multiplication modulation method for power converter |
| CN104852557B (en) * | 2015-06-12 | 2017-08-25 | 扬州大学 | Numerical model analysis phase shift multiple-frequency modulation method applied to power inverter |
| CN107515321A (en) * | 2016-06-16 | 2017-12-26 | 浙江正泰电器股份有限公司 | The method of the output current response time of constant current source control system and shortening constant-current source |
| CN107482925A (en) * | 2017-08-28 | 2017-12-15 | 广西电网有限责任公司电力科学研究院 | A kind of frequency-conversion constant-current source follower circuit |
| CN107482925B (en) * | 2017-08-28 | 2019-11-22 | 广西电网有限责任公司电力科学研究院 | A kind of frequency-conversion constant-current source follower circuit |
| CN109264316A (en) * | 2018-10-29 | 2019-01-25 | 安徽中科光电色选机械有限公司 | A kind of more vibrator control devices of color selector |
| CN111464004A (en) * | 2020-05-24 | 2020-07-28 | 浙江千河智能科技有限公司 | Digital power supply and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Superior Collyer Energy Equipment Co., Ltd. Assignor: Zhuhai Titans Technology Co., Ltd. Contract record no.: 2010110000169 Denomination of utility model: Single-phase variable frequency constant-current source Granted publication date: 20070103 License type: Exclusive License Record date: 20101008 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070103 Termination date: 20121102 |