CN108155819A - A kind of AC/DC converters for reducing input current abnormality - Google Patents
A kind of AC/DC converters for reducing input current abnormality Download PDFInfo
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- CN108155819A CN108155819A CN201711334215.7A CN201711334215A CN108155819A CN 108155819 A CN108155819 A CN 108155819A CN 201711334215 A CN201711334215 A CN 201711334215A CN 108155819 A CN108155819 A CN 108155819A
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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Abstract
The invention discloses a kind of AC/DC converters for reducing input current abnormality, including exchange side LC wave filters, 13 diodes, four switching tubes, three lifting/voltage reducing copped wave inductance, one output filter capacitor composition, by the duty ratio for controlling converter switches pipe, the rectifying and pressure-regulating exported from three-phase input AC-to DC can be done directly, it exports constant, adjustable DC voltage, the AC/DC converter topologies can directly be input to the rectifying and pressure-regulating of direct current output from three-phase alternating current completely, it is small with input current abnormality, power factor, power density is high, the Advantageous such as output voltage forward direction are imitated.
Description
Technical field
The present invention relates to a kind of AC/DC converters, become more particularly, to a kind of AC/DC for reducing input current abnormality
Parallel operation.
Background technology
In the AC/DC converters of the prior art, when change range of input voltage is smaller, efficiency is very high, but in height
High DC bus-bar voltage can be generated during control source so that the selection of the isolated power converter device of rear class, transformer are set
Meter, the selection of output filter are relatively difficult, and traditional AC/DC converters generally existing input current is interrupted, and output voltage is reversed
The problems such as, and very big output inductor is needed when output voltage is higher, converter volume is excessive, and power density
It is low.
For input current abnormality present in current tradition AC/DC converters is serious, converter volume is big and output is electric
The technical problems such as reversed are pressed, not yet propose to efficiently solve scheme at present.
Invention content
The present invention proposes a kind of small AC/DC converters of novel input current abnormality, is converted with solving existing tradition AC/DC
The technical problems such as input current abnormality present in device is serious, converter volume is big and output voltage is reversed.
In order to solve the above technical problems, the present invention proposes a kind of small AC/DC converters of input current abnormality, including three-phase
AC power, input filter, chopper circuit and output filter.The output connection of the three-phase alternating-current supply is described defeated
Enter the input of wave filter, the input terminal of the output connection chopper circuit of input filter, the output terminal connection of chopper circuit
Output filter, the output connection load of output filter.
The AC/DC converters of the reduction input current abnormality, including exchange side LC wave filters, 13 diodes, four
Switching tube, three lifting/voltage reducing copped wave inductance, an output filter capacitor composition, by controlling the duty ratio of converter switches pipe,
The rectifying and pressure-regulating exported from three-phase input AC-to DC can be done directly, exports constant, adjustable DC voltage.
Further, in the AC/DC converters, exchange side LC wave filters input inductance including A phases, B phases input inductance, C
Mutually input inductance；The A phases input inductance one end connection A phase input powers, and the anode of other end connection diode D1 is described
The drain electrode of the cathode connecting valve pipe Sa of diode D1, the source electrode of the switching tube Sa connect one end of the first A phase inductances, institute
State the anode of the other end connection diode VD1 of the first A phase inductances, the anode of the cathode connection diode VD7 of the VD1, institute
State one end of diode VD7 cathode connection load and one end of output filter capacitor C1；The A phases input the inductance other end also
The cathode of diode D2 is connected, the diode D2 anodes connect the anode of the diode VD1；The source electrode of the switching tube Sa
Be also connected with the cathode of diode VD4, the VD4 anodes be also connected with load the other end and the output filter capacitor C1 it is another
One end.
The B phases input inductance one end connection B phase input powers, the anode of other end connection diode D3, two pole
The drain electrode of the cathode connecting valve pipe Sb of pipe D3, one end of source electrode the first B phase inductances of connection of the switching tube Sb, described first
The anode of the other end connection diode VD2 of B phase inductances, the anode of the cathode connection diode VD7 of the VD2, two pole
Pipe VD7 cathode connect one end of the load and one end of the output filter capacitor C1；The B phases input the inductance other end also
Connect the cathode of diode D4, the anode of the diode D4 cathode connecting diodes VD2；The source electrode of switching tube Sb is also connected with two
The cathode of pole pipe VD5, the VD5 anodes are also connected with the other end of the load and the other end of the capacitance C1.
The C phases input inductance one end connection C phase input powers, the anode of other end connection diode D5, two pole
The drain electrode of the cathode connecting valve pipe Sc of pipe D5, one end of source electrode the first C phase inductances of connection of the switching tube Sc, described first
The anode of the other end connection diode VD3 of C phase inductances, the anode of the cathode connection diode VD7 of the VD3, two pole
Pipe VD7 cathode connect one end of the load and one end of the capacitance C1；The C phases input the inductance other end and are also connected with two
The cathode of pole pipe D6, the anode of the diode D6 cathode connecting diodes VD3；The source electrode of the switching tube Sc is also connected with two poles
The cathode of pipe VD6, anode are also connected with the other end of the load and the other end of the capacitance C1.
The advantageous effects of the present invention：The novel AC/DC that can reduce input current abnormality that the present invention studies becomes
Parallel operation topology can directly be input to the rectifying and pressure-regulating of direct current output from three-phase alternating current completely, have that input current abnormality is small, power
The advantageous effects such as factor, power density height, output voltage forward direction.The converter is suitable for money range of voltages and inputs occasion,
Both prime rectification circuit can be used as, the isolated converter for rear class provides constant input voltage, can also be used as main electricity
Road directly takes electricity to power for DC load from electric current power grid.
Description of the drawings
Fig. 1 is the AC/DC converter circuit structure charts that can reduce input current abnormality of the embodiment of the present invention.
Specific embodiment
Hereinafter, an embodiment of the AC/DC converter circuits of the present invention is illustrated with reference to attached drawing 1.Such as Fig. 1
It is shown, AC/DC converters include exchange side LC wave filters, multiple diodes, four switching tubes, three lifting voltage inductances, one
Output filter capacitor forms, and by controlling the duty ratio of converter switches, can be done directly from three-phase input AC-to DC
The rectifying and pressure-regulating of output exports constant, adjustable DC voltage.Wherein the exchange side LC wave filters of input side are used for filtering out out
Close the current harmonics near frequency or its integral multiple so that input current near sinusoidal, it, can when circuit is operated in DCM states
To replace the big inductance in conventional three-phase stepping-up/stepping-down chopper circuit with three small inductors, thus converter volume can be reduced；It is logical
It crosses diode bridge afterflow and obtains positive output voltage.
Concrete structure is as follows：A phases input inductance one end connection A phase input powers, and the other end connects the anode of diode D1,
The drain electrode of the cathode connecting valve pipe Sa of diode D1, the source electrode of switching tube Sa connect one end of the first A phase inductances, the first A phases
The anode of the other end connection diode VD1 of inductance, the anode of the cathode connection diode VD7 of VD1, diode VD7 cathode connect
Connect one end of load and one end of capacitance C1；A phases input the cathode that the inductance other end is also connected with diode D2, diode D2 anodes
Connect the anode of diode VD1；The source electrode of switching tube Sa is also connected with the cathode of diode VD4, and anode is also connected with the another of load
One end and the other end of capacitance C1.
B phases input inductance one end connection B phase input powers, and the anode of other end connection diode D3, diode D3's is negative
The drain electrode of pole connecting valve pipe Sb, the source electrode of switching tube Sb connect one end of the first B phase inductances, the other end of the first B phase inductances
Connect the anode of diode VD2, the anode of the cathode connection diode VD7 of VD2, one end of diode VD7 cathode connection load
With one end of capacitance C1；B phases input the cathode that the inductance other end is also connected with diode D4, diode D4 cathode connecting diodes
The anode of VD2；The source electrode of switching tube Sb is also connected with the cathode of diode VD5, and anode is also connected with the other end and capacitance of load
The other end of C1.
C phases input inductance one end connection C phase input powers, and the anode of other end connection diode D5, diode D5's is negative
The drain electrode of pole connecting valve pipe Sc, the source electrode of switching tube Sc connect one end of the first C phase inductances, the other end of the first C phase inductances
Connect the anode of diode VD3, the anode of the cathode connection diode VD7 of VD3, one end of diode VD7 cathode connection load
With one end of capacitance C1；C phases input the cathode that the inductance other end is also connected with diode D6, diode D6 cathode connecting diodes
The anode of VD3；The source electrode of switching tube Sc is also connected with the cathode of diode VD6, and anode is also connected with the other end and capacitance of load
The other end of C1.
The operation principle of circuit is as follows：Since the input voltage of circuit is three-phase symmetric voltage, with 0 ＜ ω t ＜
Circuit is analyzed for 30 °, other ranges easily deduce according to symmetry.When four switches are triggered simultaneously, Sd is switched
Can be by load-side short circuit, power supply is respectively by switching Sa, Sb, Sc to three induction chargings, the power supply of capacitance C phase loads；When four
After switching tube simultaneously turns off, three inductance are discharged by diode VD7 to capacitance C, and inductive current charging and discharging is divided into following several
A stage：
The T0-t1 stages：Set t<During t0,4 switching tubes are all in off state；T0 moment, 4 switching tubes touch simultaneously
Hair, ea, eb is just, and ec be negative, therefore switching tube Sa, Sc, Sd conducting, Sb maintenance off states, power supply to three induction chargings, this
Energy needed for stage load is provided by capacitance；
The T1-t2 stages：T1 moment, four switches are simultaneously turned off, and three inductance are in parallel to capacitor charging, inductance
The energy picture load release of middle storage；
The t2-t3 stages：T2 moment, A phase inductances discharge off first, the inductance in B phases and C phases continue to provide to load-side
Energy；
The t3-t4 stages：T3 moment, C phase inductance discharge offs, the inductance in B phases continue to provide energy to load-side；
The t4-t5 stages：At the t4 moment, B phase inductance discharge offs, the electric current flowed through on three pole reactor is all 0, is loaded by capacitance
Electric energy is provided.
When circuit is operated in stable state, it is assumed that switching frequency is much larger than the input phase electric voltage frequency, can in each switch periods
To think input voltage as steady state value, and ignore the influence of input filter.
When four switching tubes are all triggered, load-side is switched on and off Sd short circuits, and it is zero to flow through the electric current on VD7, when four
When switching tube simultaneously turns off, for three inductance simultaneously by diode VD7 powering loads, it is 3 inductance to flow through the electric current on VD7
The sum of electric current, the switch periods average current that can calculate VD7 are
Wherein, D is the duty ratio of switch, and Um be the peak value of input phase voltage, and L is inductance value, and fs is switching frequency, Uo
For output current.
During stable state, switch periods capacitor averaging electric current is zero, and therefore, output current is equal to the electricity flowed through on diode VD7
Stream
So as to acquire the gain of circuit.
From the above equation, we can see that when designing circuit parameter, suitable inductance value and switching frequency should be selected, has both ensured circuit energy
DCM patterns are operated in, can guarantee that D can be operated within the scope of effective duty cycle.
The harmonic component of input current is mainly distributed near switching frequency and its integral multiple, designs the cutoff frequency of wave filter
Rate is much smaller than switching frequency, filters off the high-frequency harmonic of input current, and such converter is with regard to that can obtain the three-phase input of near sinusoidal
Electric current.
The Three phase AC/DC converter topologies that the present invention studies directly can be input to direct current output from three-phase alternating current completely
Rectifying and pressure-regulating, there are the advantageous effects such as input current abnormality is small, power factor, power density height, output voltage forward direction.
The converter is suitable for money range of voltages and inputs occasion, can both be used as prime rectification circuit, is the isolated converter of rear class
Constant input voltage is provided, main circuit is can also be used as and directly electricity is taken to power for DC load from electric current power grid.
The present invention is illustrated by specific implementation process, without departing from the present invention, can be with
Various transformation and equal replacement are carried out to patent of the present invention, therefore patent of the present invention is not limited to disclosed specific implementation
Journey, and should include falling into whole embodiments in scope of the patent claims of the present invention, the scope of the present invention is by appended power
Profit requires rather than describes to indicate, and all changes in the meaning and scope of equivalent are intended to be included therein.
Claims (2)
1. a kind of AC/DC converters for reducing input current abnormality, it is characterised in that：Including exchange side LC wave filters, 13
Diode, four switching tubes, three lifting/voltage reducing copped wave inductance, an output filter capacitor composition, by controlling converter switches
The duty ratio of pipe can be done directly the rectifying and pressure-regulating exported from three-phase input AC-to DC, export constant, adjustable direct current
Voltage.
2. AC/DC converters according to claim 1, it is characterised in that：Exchange side LC wave filters input electricity including A phases
Sense, B phases input inductance, C phases input inductance；The A phases input inductance one end connection A phase input powers, and the other end connects two poles
The anode of pipe D1, the drain electrode of the cathode connecting valve pipe Sa of the diode D1, the source electrode of the switching tube Sa connect the first A phases
One end of inductance, the anode of the other end connection diode VD1 of the first A phase inductances, the cathode connection diode of the VD1
The anode of VD7, one end of the diode VD7 cathode connection load and one end of output filter capacitor C1；The A phases input electricity
The sense other end is also connected with the cathode of diode D2, and the diode D2 anodes connect the anode of the diode VD1；The switch
The source electrode of pipe Sa is also connected with the cathode of diode VD4, and the VD4 anodes are also connected with the other end of load and the output filtered electrical
Hold the other end of C1；
The B phases input inductance one end connection B phase input powers, the anode of other end connection diode D3, the diode D3
Cathode connecting valve pipe Sb drain electrode, the source electrode of the switching tube Sb connects one end of the first B phase inductances, the first B phases
The anode of the other end connection diode VD2 of inductance, the anode of the cathode connection diode VD7 of the VD2, the diode
VD7 cathode connect one end of the load and one end of the output filter capacitor C1；The B phases input the inductance other end and also connect
Connect the cathode of diode D4, the anode of the diode D4 cathode connecting diodes VD2；The source electrode of switching tube Sb is also connected with two poles
The cathode of pipe VD5, the VD5 anodes are also connected with the other end of the load and the other end of the capacitance C1；
The C phases input inductance one end connection C phase input powers, the anode of other end connection diode D5, the diode D5
Cathode connecting valve pipe Sc drain electrode, the source electrode of the switching tube Sc connects one end of the first C phase inductances, the first C phases
The anode of the other end connection diode VD3 of inductance, the anode of the cathode connection diode VD7 of the VD3, the diode
VD7 cathode connect one end of the load and one end of the capacitance C1；The C phases input the inductance other end and are also connected with diode
The cathode of D6, the anode of the diode D6 cathode connecting diodes VD3；The source electrode of the switching tube Sc is also connected with diode
The cathode of VD6, anode are also connected with the other end of the load and the other end of the capacitance C1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711334215.7A CN108155819B (en) | 2017-12-12 | 2017-12-12 | AC/DC converter for reducing input current distortion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711334215.7A CN108155819B (en) | 2017-12-12 | 2017-12-12 | AC/DC converter for reducing input current distortion |
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| CN108155819A true CN108155819A (en) | 2018-06-12 |
| CN108155819B CN108155819B (en) | 2020-09-29 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552546A (en) * | 2008-04-02 | 2009-10-07 | 台达电子工业股份有限公司 | Bridgeless power factor circuit correcting circuit system used for critical conduction mode and control method thereof |
| CN103825477A (en) * | 2014-02-25 | 2014-05-28 | 南京理工大学 | Three-phase single tube DCM Boost PFC converter |
| CN104734543A (en) * | 2015-03-20 | 2015-06-24 | 南京理工大学 | Efficient three-phase single-tube DCM Boost PFC converter |
| CN105656296A (en) * | 2014-11-17 | 2016-06-08 | 艾默生网络能源有限公司 | Soft switch auxiliary circuit, two-phase or three-phase input PFC circuit and control method |
| CN106877373A (en) * | 2015-12-13 | 2017-06-20 | 张凤军 | A kind of directly-driving wind power generation system Poewr control method |
| CN107196318A (en) * | 2017-04-17 | 2017-09-22 | 华北电力大学 | A kind of electric automobile based on V2G technologies participates in power grid frequency modulation control method |
-
2017
- 2017-12-12 CN CN201711334215.7A patent/CN108155819B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552546A (en) * | 2008-04-02 | 2009-10-07 | 台达电子工业股份有限公司 | Bridgeless power factor circuit correcting circuit system used for critical conduction mode and control method thereof |
| CN103825477A (en) * | 2014-02-25 | 2014-05-28 | 南京理工大学 | Three-phase single tube DCM Boost PFC converter |
| CN105656296A (en) * | 2014-11-17 | 2016-06-08 | 艾默生网络能源有限公司 | Soft switch auxiliary circuit, two-phase or three-phase input PFC circuit and control method |
| CN104734543A (en) * | 2015-03-20 | 2015-06-24 | 南京理工大学 | Efficient three-phase single-tube DCM Boost PFC converter |
| CN106877373A (en) * | 2015-12-13 | 2017-06-20 | 张凤军 | A kind of directly-driving wind power generation system Poewr control method |
| CN107196318A (en) * | 2017-04-17 | 2017-09-22 | 华北电力大学 | A kind of electric automobile based on V2G technologies participates in power grid frequency modulation control method |
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Effective date of registration: 20200904 Address after: 317100 shangfengkeng village, hailun street, Sanmen County, Taizhou City, Zhejiang Province (self declaration) Applicant after: Sanmen Yaofan Automation Technology Co.,Ltd. Address before: 528000 A 2903 Room, 32 Zhaoxiang Road, Chancheng District, Foshan City, Guangdong Province Applicant before: FOSHAN LUOKEWEITE TECHNOLOGY Co.,Ltd. |
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Denomination of invention: An AC/DC Converter for Reducing Input Current Distortion Effective date of registration: 20230612 Granted publication date: 20200929 Pledgee: Chongqing Three Gorges bank Limited by Share Ltd. two rivers branch Pledgor: Aerospace Zhongdian (Chongqing) Microelectronics Co.,Ltd. Registration number: Y2023500000040 |