CN203691226U - Novel high-frequency switching power supply power factor correction apparatus - Google Patents
Novel high-frequency switching power supply power factor correction apparatus Download PDFInfo
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- CN203691226U CN203691226U CN201320861602.7U CN201320861602U CN203691226U CN 203691226 U CN203691226 U CN 203691226U CN 201320861602 U CN201320861602 U CN 201320861602U CN 203691226 U CN203691226 U CN 203691226U
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- 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
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Abstract
The utility model belongs to the technical field of power electronics, and concretely relates to a novel high-frequency switching power supply power factor correction apparatus, comprising an input transient voltage protection circuit, an TMS320F28035PAGT type DSP (Digital Signal Processor) system, a PWM (Pulse Width Modulation) control circuit, and a Boost boost circuit. By adopting the DSP system to perform processing and control, the apparatus can monitor the system in real time, and can acquire an input voltage, an input current and a bus voltage, in addition, by adopting a double closed loop control mode, i.e., the control model of outer voltage loop and inner current loop, a power factor can be raised effectively, and anti-interference performance and high reliability of the system on hardware can be ensured at the same time. In this way, the novel high-frequency switching power supply power factor correction apparatus of the utility model can ensure a good power factor of electric power equipment in real time, thereby reducing voltage loss in the power supply system, enabling a load voltage to be more stable, and improving quality of the electric energy better. The novel high-frequency switching power supply power factor correction apparatus of the utility model is suitable for development and application of a switching power supply system in the fields of electric power, telecommunication, national defense, household electrical appliance and so on.
Description
Technical field
The utility model belongs to electric and electronic technical field, and what be specifically related to is a kind of high frequency switch power power factor correcting of novelty.
Background technology
Power factor is to weigh a coefficient of electric equipment efficiency, and power factor is low, illustrates that circuit is large for the reactive power of alternating magnetic field conversion, thereby has reduced the utilance of equipment, has increased line powering loss.By improving power factor, reduce the electric component in total current and electric power system in circuit, as the capacity of transformer, electric equipment, wire etc., therefore not only reduce investment cost, and reduced the loss of electric energy own.How to improve power factor, to need the insider of scientific and technological circle to need for a long time the problem solving always, if a large amount of higher harmonic currents again feedback enter electrical network, must make electrical network be polluted, the IEC of International Electrotechnical Commission has organized to set up about the unified international standard of restriction high order harmonic component, does not allow to access electrical network for the high frequency switch power that does not meet harmonic standard.For this reason, high efficiency high frequency Switching Power Supply need to, in conjunction with the calibration function of power factor PFC, meet the index request of maximum total harmonic distortion THD in the time of design simultaneously.The utility model is applicable to the Application and Development of the switch power supply system in the fields such as electric power, telecommunications, space flight, national defence and household electrical appliances.
Summary of the invention
The high frequency switch power power factor correcting of a kind of novelty of the utility model design, exactly in order to obtain good power factor, reduce the loss of voltage in electric power system, make load voltage more stable, reduce electric network pollution, thereby improve and improve the quality of electric energy.
For achieving the above object; the high frequency switch power power factor correcting of a kind of novelty of the utility model; comprise input transient voltage protective circuit, TMS320F28035PAGT type dsp system, pwm control circuit, Boost booster circuit; it is characterized in that inputting transient voltage protective circuit and be connected with TMS320F28035PAGT type dsp system and the Boost booster circuit signal of telecommunication respectively, PWM controller is connected with TMS320F28035PAGT type dsp system and the Boost booster circuit signal of telecommunication respectively.
The utility model can make in real time to exchange input current and follow AC-input voltage, makes input current and input voltage same-phase, and approaches sine, also reduces current harmonics component simultaneously.This circuit of power factor correction is introduced voltage and current feedback simultaneously, form a Double Loop Control System, there is rectification and voltage stabilizing function, be that rectification requirement input power factor is more than 0.99, realize input current shaping, make it to become and the synchronous standard sine wave of voltage, voltage stabilizing requires output voltage stabilization.The utility model adopts dsp system control, can Real-time Collection input voltage, input current, busbar voltage, and adopting the control mode of the two closed loops of outer voltage current inner loop, the very effective power factor that improved has guaranteed anti-interference and the high reliability of system simultaneously on hardware.Because this device can be guaranteed the power factor that power equipment is good in real time, thereby reduce the loss of voltage in electric power system, can make load voltage more stable, better improved the quality of electric energy.
Accompanying drawing explanation
Fig. 1 is the utility model input transient voltage protective circuit schematic diagram 1;
Fig. 2 is the utility model input transient voltage protective circuit schematic diagram 2;
Fig. 3 is the utility model Boost booster circuit schematic diagram;
Fig. 4 is the utility model PWM controller circuitry schematic diagram;
Fig. 5 is the utility model TMS320F28035PAGT type dsp system circuit theory diagrams;
Fig. 6 is the utility model outer voltage and current inner loop PFC control method theory diagram;
Fig. 7 is the utility model system principle diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done to further detailed explanation:
A kind of high frequency switch power power factor correcting of novelty; formed by input transient voltage protective circuit, TMS320F28035PAGT type dsp system, pwm control circuit, Boost booster circuit; input transient voltage protective circuit is connected with TMS320F28035PAGT type dsp system and the Boost booster circuit signal of telecommunication respectively, and PWM controller is connected with TMS320F28035PAGT type dsp system and the Boost booster circuit signal of telecommunication respectively.This device is to adopt digital signal processor DSP system to process and control, the model of digital signal processor DSP is TMS320F28035PAGT type, he can monitor system in real time, and Gather and input voltage, input current, busbar voltage, and the control mode of the two closed loops of employing outer voltage current inner loop, the very effective power factor that improved has guaranteed anti-interference and the high reliability of system simultaneously on hardware.Because this device can be guaranteed the power factor that power equipment is good in real time, thereby reduce the loss of voltage in electric power system, can make load voltage more stable, better improved the quality of electric energy.
The course of work of specific embodiment
1, input transient voltage protective circuit is as shown in accompanying drawing 1, accompanying drawing 2; in order to prevent that input is subject to the impact of the extraneous factor such as thunder and lightning, inductive switch; adopt metal oxide piezo-resistance R311; its model is S20K625E3K1 type; received ac input end, realize transient voltage is suppressed.Be added in piezo-resistance when high pressure spike moment, its impedance reduces, and transient energy consumption is in piezo-resistance, and filtering peak voltage, makes input voltage in safe range.Adopt 2 grades of electromagnetic interference EMI filtering and corresponding X electric capacity and Y electric capacity, 2 safeties F101, F102 are set on ac bus, the parameter of safeties is 500V/25A.Circuit is by 4 diodes composition full bridge rectifiers, and it is all the steamed bun waveform of forward that the AC signal of input is become, and the ac voltage signal Vac of output is through electric resistance partial pressure, and 3.3V voltage stabilizing clamper is finally input to the AD part of DSP core controller.Ac input end has the relay of controlling break-make; relay uses unified driving; export a low and high level control by DSP core controller; Control part plays the effect of protection back-end circuit; the warning if system breaks down, R112 thermistor reaches a timing in temperature, and blow inside; cut off input power, thereby protected circuit.
2, as shown in Figure 3, this device is the Boost single-phase active PFC that boosts adopting to Boost booster circuit, and 100 Ohmic resistances and a 100pF electric capacity that RC absorbing circuit is become by 8 51 Europe resistance connection in series-parallel form, and are connected in parallel on respectively the two ends of 6 diodes.Bidirectional switch adopts 2 metal-oxide-semiconductor differential concatenation compositions, and metal-oxide-semiconductor adopts the SPW47N60C3 of Infineon.The absorbing circuit of each metal-oxide-semiconductor is made up of multiple resistance connection in series-parallel and multiple electric capacity connection in series-parallel, and absorption resistance all adopts 1206 encapsulation.
3, pwm control circuit as shown in Figure 4, with the output isolation of optocoupler and DSP core controller and pwm control circuit, is then controlled 2 metal-oxide-semiconductors in a bidirectional switch by a binary channels PWM ripple drive integrated circult IC simultaneously.Drive integrated circult IC selects MIC4424 type, isolation optocoupler is selected HCPL0601 type, this optocoupler is same model with the 6N137 often using in the past, earth terminal before optocoupler input is got the earth terminal of sub-PFC core controller, and the ground connection after optocoupler is got the source electrode of the metal-oxide-semiconductor of two differential concatenations of bidirectional switch.
4, outer voltage and current inner loop PFC control method are as shown in accompanying drawing 5, accompanying drawing 6, this device adopts the control of digital signal processor DSP system, the model of DSP is TMS320F28035PAGT type, it can Real-time Collection input ac voltage, input current, busbar voltage, by realizing PFC control algolithm in dsp controller inside.PFC algorithm current-mode control adopts the dicyclo control of outer voltage and current inner loop, and multiplier is realized the calculating of given value of current, reaches the target of permanent power input simultaneously.Therefore the core of computing comprises that dicyclo regulates the multiplier of calculating and given value of current to calculate, and dicyclo all adopts comparatively succinct PI algorithm.
5, the specific works program of this device is after system powers on, all components and parts are started working by electricity, dsp system enters operating state, relay adhesive, Switching Power Supply enters soft start state, DSP can regularly enter and interrupt sending out wave-path order, in interrupt function, be first to carry out outer voltage closed loop PI to regulate, the output of this loop and phase voltage, multiplier coefficients is done multiplying, output variable is as the set-point of current inner loop, the phase current gathering with DSP does and in electric current loop, encircles PI and regulate, the output assignment of loop is to the comparand register of PWM, control the pulse duration of metal-oxide-semiconductor SPW47N60C3.
The utility model has solved high-frequency switching power supply module medium-high frequency, efficiently, high power density, High Power Factor, the requirement of high reliability, adopts Single-Phase Active Power Factor Correction Circuit, adopts the two closed loop control methods of PI to have less input current ripple, and can effectively reduce switching device energy loss, and the EMI that can reduce to produce in conversion process.
Claims (3)
1. a novel high frequency switch power power factor correcting; comprise input transient voltage protective circuit, TMS320F28035PAGT type dsp system, pwm control circuit, Boost booster circuit; it is characterized in that inputting transient voltage protective circuit and be connected with TMS320F28035PAGT type dsp system and the Boost booster circuit signal of telecommunication respectively, PWM controller is connected with TMS320F28035PAGT type dsp system and the Boost booster circuit signal of telecommunication respectively.
2. the power factor correcting of the high frequency switch power of a kind of novelty according to claim 1, is characterized in that its model of metal oxide piezo-resistance that described input transient voltage protective circuit adopts is S20K625E3K1 type.
3. the power factor correcting of the high frequency switch power of a kind of novelty according to claim 1, is characterized in that the parameter of the safeties of described input transient voltage protective circuit employing is 500V/25A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861602.7U CN203691226U (en) | 2013-12-25 | 2013-12-25 | Novel high-frequency switching power supply power factor correction apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861602.7U CN203691226U (en) | 2013-12-25 | 2013-12-25 | Novel high-frequency switching power supply power factor correction apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN203691226U true CN203691226U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320861602.7U Expired - Fee Related CN203691226U (en) | 2013-12-25 | 2013-12-25 | Novel high-frequency switching power supply power factor correction apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022062498A1 (en) * | 2020-09-22 | 2022-03-31 | 浙江泰福泵业股份有限公司 | Power factor correction (pfc) circuit for brushless dc water pump having ac input |
-
2013
- 2013-12-25 CN CN201320861602.7U patent/CN203691226U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022062498A1 (en) * | 2020-09-22 | 2022-03-31 | 浙江泰福泵业股份有限公司 | Power factor correction (pfc) circuit for brushless dc water pump having ac input |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20191225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |