CN108322059A - A kind of AC power - Google Patents
A kind of AC power Download PDFInfo
- Publication number
- CN108322059A CN108322059A CN201711483883.6A CN201711483883A CN108322059A CN 108322059 A CN108322059 A CN 108322059A CN 201711483883 A CN201711483883 A CN 201711483883A CN 108322059 A CN108322059 A CN 108322059A
- Authority
- CN
- China
- Prior art keywords
- voltage
- filter
- inverter
- alternating current
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a kind of AC powers, including the electromagnetic interface filter being sequentially connected, uncontrollable rectifier device, DC filter, inverter and alternating current filter, the alternating voltage of input is after electromagnetic interface filter filters out high-frequency interferencing signal, it is changed into DC voltage through uncontrollable rectifier device and DC filter, DC voltage is after inverter is changed into alternating current, through alternating current filter output AC voltage, the output end of alternating current filter sampled ultramagnifier successively, master controller and isolation controller are connected with inverter, the DC filter is also connected through power factor corrector with inverter.The present invention can be corrected the power factor of the filter circuit of input, to ensure the stability of output voltage.
Description
Technical field
The present invention relates to power electronic equipment field more particularly to a kind of AC powers.
Background technology
In recent years, with the extensive use of all kinds of power electronic equipments, lead to the harmonic pollution getting worse in power grid, electricity
Energy quality also declines therewith, and in contrast, since various high and new technology equipments constantly come into operation, user wants power quality
Ask higher and higher, it is desirable to obtain the electric energy supply of the slight harmonic pollution even voltage stabilization of no-harmonic wave pollution.In addition, real
All kinds of engineering projects in border require there are difference the design parameter of power supply, and the power parameter required by same occasion may also
Difference, common AC power are all output fixing signals, and timely Parameter adjustable is also very limited, cannot meet load requirement.This
Outside, AC power is generally in rectification circuit to being added filter circuit between inverter circuit, this is in order to by smooth voltage or electricity
It streams to inverter circuit, but contains current harmonics in the voltage of input filter circuit, influence the stability of output voltage.
Invention content
The purpose of the present invention is to provide a kind of AC powers, can carry out school to the power factor of the filter circuit of input
Just, to ensure the stability of output voltage.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of AC power, including the electromagnetic interface filter, uncontrollable rectifier device, DC filter, inverter and the exchange that are sequentially connected are filtered
Wave device, the electromagnetic interface filter are used to carry out low-pass filtering to the alternating voltage of input, high-frequency interferencing signal barrier are fallen, makes to permit
Perhaps frequency signal when equipment works normally enters equipment, and uncontrollable rectifier device is used to ac voltage rectifier be DC voltage, directly
It flows filter to be used to smooth voltage or electric current inputting inverter, inverter is used to direct current becoming alternating current, exchange filter
Wave device is for being filtered alternating voltage, and the alternating voltage of input is after electromagnetic interface filter filters out high-frequency interferencing signal, through not
Control rectifier and DC filter are changed into DC voltage, and DC voltage is after inverter is changed into alternating current, through ac filter
Device output AC voltage, output end sampled ultramagnifier, master controller and isolation controller and the inversion successively of alternating current filter
Device is connected, and the DC filter is also connected through power factor corrector with inverter.
Preferably, the power factor corrector includes the input electricity being connected with the anode of the output voltage of DC filter
Pressure detector and the input electric cur- rent measure device that is connected with the cathode of the output voltage of DC filter, input voltage detector and defeated
Enter current detector to be respectively connected with multiplier, the output end of multiplier is connected with PWM comparators, the input terminal of PWM comparators
It is also associated with triangular-wave generator, the output end of PWM comparators is connected with driver, the output end of driver and the grid of switching tube
Extremely it is connected, the source level of switching tube connects power cathode, and the drain electrode of switching tube is through the first inductance connection positive pole, the leakage of switching tube
Also through the first diode and the first capacitance connection power cathode, the first capacitance both ends are connected with alternating current filter for pole, and described first
The both ends of capacitance are connected with output voltage detector respectively, the output end of output voltage detector and the input terminal of error amplifier
It is connected, the input terminal of error amplifier is also connected with reference voltage, and the output end of error amplifier is connected with multiplier.
The present invention is filtered out the high-frequency interferencing signal in the alternating voltage of input by electromagnetic interface filter, through uncontrollable rectifier
Device and DC filter are changed into DC voltage, and DC voltage exports after inverter is changed into alternating current through alternating current filter
Alternating voltage, sampled ultramagnifier, master controller and isolation controller are connected the output end of alternating current filter with inverter successively,
The duty ratio that output voltage waveforms are adjusted by master controller adjusts output voltage to control the switching frequency of inverter
Size and frequency；The output end of DC filter is connected with power factor corrector, and power factor corrector can make inverter
The harmonic component of input current reduce, make voltage waveform as close possible to sine wave, improve power factor, ensure output voltage
Stability.
Description of the drawings
Fig. 1 is the principle of the present invention block diagram；
Fig. 2 is the functional block diagram of power factor corrector of the present invention.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described embodiment
Only section Example of the invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Other all embodiments that art personnel are obtained without making creative work belong to the protection model of the present invention
It encloses.
As shown in Figures 1 and 2, a kind of AC power of the present invention, including be sequentially connected electromagnetic interface filter, do not control
Rectifier, DC filter, inverter and alternating current filter, electromagnetic interface filter are used to carry out low pass filtered to the alternating voltage of input
Wave falls high-frequency interferencing signal barrier, and frequency signal when permission equipment being made to work normally enters equipment, and uncontrollable rectifier device is used for
It is DC voltage by ac voltage rectifier, DC filter is used to smooth voltage or electric current inputting inverter, and inverter is used
In direct current is become alternating current, for being filtered to alternating voltage, the alternating voltage of input filters alternating current filter through EMI
After device filters out high-frequency interferencing signal, it is changed into DC voltage through uncontrollable rectifier device and DC filter, DC voltage is through inversion
After device is changed into alternating current, through alternating current filter output AC voltage, the output end of alternating current filter successively sampled ultramagnifier,
Master controller and isolation controller are connected with inverter, and the DC filter is also through power factor corrector and inverter phase
Even.
Power factor corrector include the input voltage detector being connected with the anode of the output voltage of DC filter and
The input electric cur- rent measure device being connected with the cathode of the output voltage of DC filter, input voltage detector and input electric cur- rent measure
Device is connected with multiplier respectively, and the output end of multiplier is connected with PWM comparators, and the input terminal of PWM comparators is also associated with three
The output end of angle wave producer, PWM comparators is connected with driver, and the output end of driver is connected with the grid of switching tube Q1,
The source level of switching tube Q1 connects power cathode, the drain electrode of switching tube Q1 through the first inductance L1 connection positive poles, switching tube Q1's
Also through the first diode D1 and the first capacitance C1 connection power cathodes, the first both ends capacitance C1 are connected with alternating current filter for drain electrode,
The both ends of first capacitance C1 are connected with output voltage detector respectively, the output end of output voltage detector and error amplifier
Input terminal is connected, and the input terminal of error amplifier is also connected with reference voltage, and the output end of error amplifier is connected with multiplier.
PFC is to keep input filter electric current continuous, and as close possible to voltage waveform by certain measure
That is sine wave, or keep the harmonic components content of input current small, to improve power factor.To the output electricity of DC filter
Stream carries out PFC, needs to carry out rectification to electric current, the electric current in continuous monitoring and regulation inductance L1, be allowed to follow
Single-phase input sinusoidal voltage after rectified, and it is proportional therewith, in addition, in order to adjust output voltage, using multiplier to defeated
Enter alternating voltage and output DC voltage to regulate and control sinusoidal benchmark current, as long as the switching frequency of switching tube Q1 is far longer than input
Electric voltage frequency, it is ensured that the input current of inverter is close to sine wave, to improve power factor.
Claims (2)
1. a kind of AC power, it is characterised in that：Including be sequentially connected electromagnetic interface filter, uncontrollable rectifier device, DC filter,
Inverter and alternating current filter, the electromagnetic interface filter are used to carry out low-pass filtering to the alternating voltage of input, High-frequency Interference are believed
Number barrier is fallen, and frequency signal when permission equipment being made to work normally enters equipment, and uncontrollable rectifier device is used for ac voltage rectifier
For DC voltage, DC filter is used to smooth voltage or electric current inputting inverter, and inverter is for becoming direct current
Alternating current, for being filtered to alternating voltage, the alternating voltage of input filters out high frequency through electromagnetic interface filter and does alternating current filter
After disturbing signal, it is changed into DC voltage through uncontrollable rectifier device and DC filter, DC voltage is changed into alternating current through inverter
Afterwards, through alternating current filter output AC voltage, output end sampled ultramagnifier, master controller and the isolation successively of alternating current filter
Controller is connected with inverter, and the DC filter is also connected through power factor corrector with inverter.
2. a kind of AC power as described in claim 1, it is characterised in that：The power factor corrector includes being filtered with direct current
The anode of the output voltage of wave device connected input voltage detector and it is connected with the cathode of the output voltage of DC filter
Input electric cur- rent measure device, input voltage detector and input electric cur- rent measure device are connected with multiplier respectively, the output end of multiplier
It is connected with PWM comparators, the input terminal of PWM comparators is also associated with triangular-wave generator, the output end of PWM comparators and driving
Device is connected, and the output end of driver is connected with the grid of switching tube, and the source level of switching tube connects power cathode, the drain electrode of switching tube
Through the first inductance connection positive pole, the drain electrode of switching tube is also through the first diode and the first capacitance connection power cathode, and first
Capacitance both ends are connected with alternating current filter, and the both ends of first capacitance are connected with output voltage detector respectively, output voltage
The output end of detector is connected with the input terminal of error amplifier, and the input terminal of error amplifier is also connected with reference voltage, error
The output end of amplifier is connected with multiplier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483883.6A CN108322059A (en) | 2017-12-29 | 2017-12-29 | A kind of AC power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483883.6A CN108322059A (en) | 2017-12-29 | 2017-12-29 | A kind of AC power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108322059A true CN108322059A (en) | 2018-07-24 |
Family
ID=62893577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711483883.6A Withdrawn CN108322059A (en) | 2017-12-29 | 2017-12-29 | A kind of AC power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108322059A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910256A (en) * | 2021-04-16 | 2021-06-04 | 宁波方太厨具有限公司 | Alternating current motor control unit and range hood |
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| CN1652419A (en) * | 2005-01-07 | 2005-08-10 | 清华大学 | Semiconductor laser driving current control method and multi-mode working driving power supply |
| CN1941588A (en) * | 2005-09-29 | 2007-04-04 | 富士电机电子设备技术株式会社 | AC to DC converter circuit |
| CN201018418Y (en) * | 2007-02-02 | 2008-02-06 | 福州大学 | Liftable current type AC-AC convertor |
| CN101325367A (en) * | 2007-06-14 | 2008-12-17 | 海尔集团公司 | Circuit for correcting part active power factor |
| CN102238791A (en) * | 2010-04-22 | 2011-11-09 | 张海波 | Electronic ballast circuit for fluorescent lamps |
| CN202135387U (en) * | 2011-06-23 | 2012-02-01 | 常州绿脉电器有限公司 | Novel environment-friendly and efficient electronic ballast |
| CN203734517U (en) * | 2013-12-04 | 2014-07-23 | 山东兆宇电子技术有限公司 | Integrated composite power supply system |
| CN205430082U (en) * | 2016-03-23 | 2016-08-03 | 许昌学院 | Contravariant welding machine electrical power generating system with power factor correction function |
| CN107078631A (en) * | 2014-11-07 | 2017-08-18 | 伊利诺斯工具制品有限公司 | Include the method and apparatus of flux equilibrium for provide the electric power in arc welder |
-
2017
- 2017-12-29 CN CN201711483883.6A patent/CN108322059A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1652419A (en) * | 2005-01-07 | 2005-08-10 | 清华大学 | Semiconductor laser driving current control method and multi-mode working driving power supply |
| CN1941588A (en) * | 2005-09-29 | 2007-04-04 | 富士电机电子设备技术株式会社 | AC to DC converter circuit |
| CN201018418Y (en) * | 2007-02-02 | 2008-02-06 | 福州大学 | Liftable current type AC-AC convertor |
| CN101325367A (en) * | 2007-06-14 | 2008-12-17 | 海尔集团公司 | Circuit for correcting part active power factor |
| CN102238791A (en) * | 2010-04-22 | 2011-11-09 | 张海波 | Electronic ballast circuit for fluorescent lamps |
| CN202135387U (en) * | 2011-06-23 | 2012-02-01 | 常州绿脉电器有限公司 | Novel environment-friendly and efficient electronic ballast |
| CN203734517U (en) * | 2013-12-04 | 2014-07-23 | 山东兆宇电子技术有限公司 | Integrated composite power supply system |
| CN107078631A (en) * | 2014-11-07 | 2017-08-18 | 伊利诺斯工具制品有限公司 | Include the method and apparatus of flux equilibrium for provide the electric power in arc welder |
| CN205430082U (en) * | 2016-03-23 | 2016-08-03 | 许昌学院 | Contravariant welding machine electrical power generating system with power factor correction function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910256A (en) * | 2021-04-16 | 2021-06-04 | 宁波方太厨具有限公司 | Alternating current motor control unit and range hood |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180724 |