CN107979276A - A kind of follow-on single-phase power factor correcting device - Google Patents
A kind of follow-on single-phase power factor correcting device Download PDFInfo
- Publication number
- CN107979276A CN107979276A CN201610919475.XA CN201610919475A CN107979276A CN 107979276 A CN107979276 A CN 107979276A CN 201610919475 A CN201610919475 A CN 201610919475A CN 107979276 A CN107979276 A CN 107979276A
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- CN
- China
- Prior art keywords
- boost
- boost inductance
- power factor
- anode
- factor correcting
- Prior art date
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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
- 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
- H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a kind of follow-on single-phase power factor correcting device, its composition includes：AC alternating current sources（1）, rectifier bridge（2）, Boost circuit（3）, signal sampling module（4）, amplification module（5）, drive module（6）, load（7）, wherein：In Boost circuit（3）Middle boost inductance L uses the d. c. reactor of dustcore.The Cin ends and one end of boost inductance that one end of boost inductance L is connected with the cathode of diode D1, D2 are connected, the drain electrode of the other end of boost inductance L and the anode of sustained diode and MOSFET is connected, and the source electrode of MOSFET is connected with the anode of the anode of diode D3, D4 and output filter capacitor Co.Boost inductance L can use molybdenum permalloy or high magnetic flux or the d. c. reactor of iron silicon or iron powder magnetic core.
Description
Technical field
The invention belongs to the PFC in Switching Power Supply, the converter that is especially applied in space industry and
High-current inductor in Switching Power Supply.
Background technology
According to the difference of input voltage, power factor correction technology can be divided into single-phase and two major class of three-phase.For little Rong
Amount system, generally uses a kind of novel inductor using the single-phase present invention, compared to traditional inductance, improves inductive current waveform,
Improve the PFC effect of system.Technology, single-phase power factor correcting device is in circuit topology and control technology side
The development in face all comparative maturities, but in inductor design, be often required to consider influence of its magnetic field to it, particularly in design aviation
The high-current inductor in the power factor correcting in converter and Switching Power Supply in space industry is especially such,
The present invention is used for power factor correcting using a kind of novel inductor, compared to traditional inductance, improve the power of device because
Number calibration result.
The content of the invention
Technical problem solved by the invention is to provide a kind of follow-on individual event power factor correcting reality
Now the technical solution of the object of the invention is：
A kind of follow-on individual event power factor correcting, its composition include：AC alternating current sources (1), rectifier bridge (2),
Boost circuit (3), loads (4), signal sampling module (5), amplification module (6), drive module (7), wherein：In Boost circuit
(3) boost inductance L uses the d. c. reactor of dustcore in.
The Cin ends and one end of boost inductance that one end of boost inductance L is connected with the cathode of diode D1, D2 are connected,
The drain electrode of the other end of boost inductance L and the anode of sustained diode and MOSFET is connected, the source electrode of MOSFET and two poles
The anode of pipe D3, D4 and the anode of output filter capacitor Co are connected.
Boost inductance L can use molybdenum permalloy or high magnetic flux or the d. c. reactor of iron silicon or iron powder magnetic core.
Compared with prior art, the present invention its remarkable advantage：
(1) stability of (1kHz-1MHz) in high-frequency range is improved
(2) loading coil of the distribution capacity in circuit is eliminated
(3) electromagnetic interference (EMI) is reduced
The present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 structure diagrams
Fig. 2 main circuit diagrams
Fig. 3 control circuit block diagrams
In figure：1.AC alternating current sources, 2 rectifier bridges, 3.Boost circuits, 4. loads, 5. signal sampling modules, 6. amplification modules,
7. drive module.
Embodiment
1) power factor correcting
Such as its course of work in Fig. 1：The present invention uses Average Current Control strategy, carries out power factor in ccm mode
Correction.According to the Boost power factor correcting converters of CCM Model Designs, when being worked using traditional inductance, input voltage mistake
Discontinuous current mode phenomenon occurs in zero crossings.A kind of novel inductor that the present invention uses substitutes traditional inductance, improves electricity
Inducing current waveform, improves power factor, reduces THD.
Such as main components in Fig. 2 main circuit topology figures：Main circuit topology is Boost circuit, including AC alternating current sources (3kVA
Pressure regulator), the uncontrollable rectifier bridge circuit (GBJ1510) that four normal silicon diodes D1, D2, D3 and D4 are formed, input capacitance Cin
(CBB electric capacity, 630V/474nF), boost inductance L (), switching tube MOSFET (SPP20N60C3), sustained diode (carborundum
Diode), output filter capacitor Co (electrolytic capacitor, 450V/1000uF), ohmic load R (load box).
Such as Fig. 3 circuits in order to control, MC56F8257 is used using digital control approach, master chip here.Using double Kazakhstan
Buddhist design structure, internal bus clock are up to 32MHz, and the multiplication of 32x16 can be completed in the single instruction cycle.Contain in piece
The Flash and 8KB of 64KB unified data/program RAM areas, 12 ADC modular converters.Its dominant frequency is 60MHz, and switching frequency is
100KHz.Three sampled values obtained from main circuit are respectively：Input voltage Vg after rectification, inductive current iL, output voltage Vo.
Control process：Using the Average Current Control under CCM patterns, the output voltage Uo in sampling major loop in control circuit, and with
Reference voltage Uo*Compare, produce error signal Uerr, voltage error amplifier, error amplifier are given error signal Uerr
Export as Uout, inputted all the way as multiplier, leading portion input voltage Uin is to multiplier for sampling, as current signal waveform
Benchmark, ensures the sine of input current, and the input of the 3rd tunnel is the inverse of supply voltage virtual value square, is to realize input electricity
Pressure feedforward, meets the requirement of wide-range voltage, reaches power limitation control, multiplier output is Iref, as Current Feedback Control
Reference signal, relatively and sent with the inductive current IL of sampling to electric current ring amplifier, show that Iout is sent to PWM module, produce
The pulse signal of MOSFET break-makes is controlled, achievees the purpose that PFC.
2) d. c. reactor of dustcore
Dustcore is the powder inertia insulation material in dustcore made of very tiny particles of magnetic material
Material coats so that I stays loss most bear Aiwa and the air-gap of distribution is introduced core const ruction.Ring is pressed into the powder of insulation again
Form EE type magnetic cores.When winding is covered with magnetic core along whole magnetic circuit when inductor is designed, in annular dustcore
Magnetic flux can be easier to be limited within magnetic core with lamination into C-shaped magnetic core.
Dustcore is classified：
(1) molypermalloy powder magnetic core (MPP)
(2) high magnetic flux dustcore (HF)
(3) iron sial dustcore
(4) iron powder magnetic core
Iron powder magnetic core is typically used in high frequency variator, although its core loss is larger, is answered relative to commercial
EE forms annular and toroidal core, magnetic flux are largely limited within magnetic core, reduces to other devices in circuit
Influence.
The method that the present invention designs a kind of inductor that DC current is loaded with using powder core of simplification.The method is not
Correct magnetic permeability is just can determine that by hair is soundd out.
The energy-handling capability of magnetic core and the relation of its area product can have following formula expression：
In formula, W is energy；KuFor window utilization factor；BmFor magnetic flux density；J is current density.As can be seen from the above equation,
Such as magnetic flux density Bm, window utilization factor KuA is accumulated to the area of inductor with factors such as current density, JsPAll have an impact.
Although for given temperature come what is designed during inductor, they can also set for given regulation
Meter.The volt of regulation and magnetic core-how the relation of power is related to two constants
A=regulations (%)
Constant KgObtained by the physical dimension of magnetic core with following formula
Constant KeObtained by the working condition of magnetic and electricity with following formula
Operating magnetic field flux density BmFor
It can thus be seen that magnetic flux density BmIt is the main factor in terms of control size.
The design of linear reactor depends on four related factors：
(1) the inductance value L required by
(2) DC current IDC
(3) alternating current Δ Io
(4) power loss and temperature rise Tr
According to these requirements, B should be determined when designing inductanceDCAnd BACMaximum, so as not to can produce magnetic saturation and should
This makes compromise to obtain the maximum induction amount in the case of given volume.
Claims (3)
1. a kind of follow-on individual event power factor correcting, its composition includes：AC alternating current sources (1), rectifier bridge (2), Boost
Circuit (3), loads (4), signal sampling module (5), amplification module (6), drive module (7), it is characterised in that：In Boost electricity
Boost inductance L uses the d. c. reactor of dustcore in road (3).
2. individual event power factor correcting according to claim 1, it is characterised in that：One end of boost inductance L and two
The Cin ends of the cathode connection of pole pipe D1, D2 are connected with one end of boost inductance, two pole of the other end and afterflow of boost inductance L
The drain electrode of the anode and MOSFET of pipe D is connected, the source electrode of MOSFET and the anode of diode D3, D4 and output filtered electrical
The anode for holding Co is connected.
3. individual event power factor correcting according to claim 1 or 2, it is characterised in that：Boost inductance L uses molybdenum slope
Not alloy or high magnetic flux or the d. c. reactor of iron silicon or iron powder magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610919475.XA CN107979276A (en) | 2016-10-21 | 2016-10-21 | A kind of follow-on single-phase power factor correcting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610919475.XA CN107979276A (en) | 2016-10-21 | 2016-10-21 | A kind of follow-on single-phase power factor correcting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107979276A true CN107979276A (en) | 2018-05-01 |
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ID=62004522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610919475.XA Pending CN107979276A (en) | 2016-10-21 | 2016-10-21 | A kind of follow-on single-phase power factor correcting device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009118552A (en) * | 2007-11-01 | 2009-05-28 | Seiko Epson Corp | Voltage booster circuit and power supply system |
| CN101652010A (en) * | 2009-08-13 | 2010-02-17 | 合肥雷科电子科技有限公司 | Drive power supply of sunlight simulator |
| CN103797550A (en) * | 2011-09-07 | 2014-05-14 | 株式会社昌星 | Elliptical unit block for preparing core using soft magnetic metal powder, and powdered magnetic core prepared using same |
| CN103887964A (en) * | 2014-03-28 | 2014-06-25 | 天一宏业武汉科技发展有限公司 | Quasi-steady frequency interleaving type critical current PFC circuit |
| CN204013245U (en) * | 2014-06-04 | 2014-12-10 | 天一宏业武汉科技发展有限公司 | High-frequency and high-voltage sinewave output power supply with PFC |
-
2016
- 2016-10-21 CN CN201610919475.XA patent/CN107979276A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009118552A (en) * | 2007-11-01 | 2009-05-28 | Seiko Epson Corp | Voltage booster circuit and power supply system |
| CN101652010A (en) * | 2009-08-13 | 2010-02-17 | 合肥雷科电子科技有限公司 | Drive power supply of sunlight simulator |
| CN103797550A (en) * | 2011-09-07 | 2014-05-14 | 株式会社昌星 | Elliptical unit block for preparing core using soft magnetic metal powder, and powdered magnetic core prepared using same |
| CN103887964A (en) * | 2014-03-28 | 2014-06-25 | 天一宏业武汉科技发展有限公司 | Quasi-steady frequency interleaving type critical current PFC circuit |
| CN204013245U (en) * | 2014-06-04 | 2014-12-10 | 天一宏业武汉科技发展有限公司 | High-frequency and high-voltage sinewave output power supply with PFC |
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Application publication date: 20180501 |
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