CN103812314B - High Power Factor rectified three-phase circuit - Google Patents
High Power Factor rectified three-phase circuit Download PDFInfo
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- CN103812314B CN103812314B CN201210445142.XA CN201210445142A CN103812314B CN 103812314 B CN103812314 B CN 103812314B CN 201210445142 A CN201210445142 A CN 201210445142A CN 103812314 B CN103812314 B CN 103812314B
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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 present invention provides a kind of High Power Factor rectified three-phase circuit, and described High Power Factor rectified three-phase circuit includes: three-phase alternating current electrical network, filter circuit, rectification circuit and on-off circuit；Described three-phase alternating current electrical network is for powering to whole three-phase controlled rectifier circuit, including three live wires；Described filter circuit is for filtering the alternating current of described three-phase alternating current electrical network output；Including three filter inductances；Described rectification circuit is converted into DC voltage for the alternating voltage inputted by filter circuit；Including diode rectifier bridge, two electrochemical capacitors and two steady resistances；Described on-off circuit is used for compensation harmonic electric current, makes harmonic current waveforms close to sinusoidal wave form；Switch is led including three two-way gate-controlled switches and two are inverse.High Power Factor rectified three-phase circuit of the present invention inhibits harmonic current, improves net side power factor.
Description
Technical field
The invention belongs to Technics of Power Electronic Conversion application, relate to a kind of rectified three-phase circuit, particularly relate to a kind of high power because of
Number rectified three-phase circuit.
Background technology
For the domestic variable frequency air-conditioning of the converters of Alternating Current Power Supply, such as relatively high power, prime is three-phase rectifier,
Rear class is inverter circuit, and inverter is followed by compressor, at the AC of whole system, can produce the most serious harmonic current and ask
Topic, including low-order harmonic electric current and higher harmonic current, pollutes periphery and the electromagnetic environment of electrical network, can cause very time serious
Many harm, need for this to use current harmonics elimination technology.
Current harmonics elimination technology mostly uses active technique at present, by control technology actively, it is possible to achieve higher even
The net side power factor of 1, and circuit is simple, and design is easily, with low cost, and inhibition is good, widely should obtain
With.
Conventional active technology is typically all the most active, although calibration result is good, but inefficient.Therefore design it is also required to
A kind of part active harmonics electric current suppression technology, circuit structure reasonable in design and circuit parameter, reach suppress harmonic current and change
The purpose of kind power factor.
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of High Power Factor rectified three-phase circuit,
Harmonic current and the low problem of power factor cannot be suppressed for solving rectification circuit in prior art.
For achieving the above object and other relevant purposes, the present invention provides a kind of High Power Factor rectified three-phase circuit.Described Gao Gong
Rate factor rectified three-phase circuit includes: three-phase alternating current electrical network, filter circuit, rectification circuit and on-off circuit；
Described three-phase alternating current electrical network, for powering to whole three-phase controlled rectifier circuit；Including the first live wire, the second live wire,
Three live wires；
Described filter circuit, is connected with described three-phase alternating current electrical network, for filtering the alternating current of described three-phase alternating current electrical network output；
Including the first filter inductance, the second filter inductance and the 3rd filter inductance；
Described rectification circuit, is connected with described on-off circuit, is converted into DC voltage for the alternating voltage inputted by filter circuit；
Including diode rectifier bridge, the first electrochemical capacitor, the second electrochemical capacitor, the first steady resistance and the second steady resistance；Described two
Pole pipe rectifier bridge has the first brachium pontis, the second brachium pontis and the 3rd brachium pontis；
Described on-off circuit, is connected with described filter circuit and rectification circuit, for compensation harmonic electric current, makes harmonic current waveforms
Close to sinusoidal wave form；Including the first two-way gate-controlled switch, the second two-way gate-controlled switch, the 3rd two-way gate-controlled switch, first inverse lead
Switch and second is against leading switch.
Preferably, in described filter circuit, one end of the first filter inductance is connected with the first live wire in described three-phase alternating current electrical network,
The other end of the first filter inductance is connected with the first ac input end of the diode rectifier bridge in described rectification circuit；Second filtering
One end of inductance is connected with the second live wire in described three-phase alternating current electrical network, the other end of the second filter inductance and described rectification circuit
In diode rectifier bridge the second ac input end be connected；In one end of 3rd filter inductance and described three-phase alternating current electrical network the
Two live wires are connected, the other end of the 3rd filter inductance and the 3rd ac input end phase of the diode rectifier bridge in described rectification circuit
Even.
Preferably, the first ac input end of described diode rectifier bridge, the second ac input end, the 3rd ac input end are respectively
It is the first brachium pontis midpoint, the second brachium pontis midpoint, the 3rd brachium pontis midpoint.
Preferably, the first electrochemical capacitor in described rectification circuit and the first steady resistance are in parallel, the second electrochemical capacitor and second steady
Determine resistor coupled in parallel.
Preferably, there is direct current ring between the first electrochemical capacitor, the first steady resistance and the second electrochemical capacitor, the second steady resistance
Joint midpoint.
Preferably, the positive pole of described diode rectifier bridge and the positive pole of the first electrochemical capacitor are connected, and form DC circuit output cathode,
The negative pole of described diode rectifier bridge and the negative pole of the second electrochemical capacitor are connected, and form DC circuit output negative pole.
Preferably, the first input end of the diode rectifier bridge in one end of described first two-way gate-controlled switch and described rectification circuit
A is connected, and the other end of described first two-way gate-controlled switch is connected with the described first inverse emitter stage leading switch；Described second two-way
One end of gate-controlled switch is connected with the second ac input end of the diode rectifier bridge in described rectification circuit, described second two-way can
The other end of control switch is connected with the described first inverse emitter stage leading switch；One end of described 3rd two-way gate-controlled switch is whole with described
3rd ac input end of the diode rectifier bridge in current circuit is connected, the other end of described 3rd two-way gate-controlled switch and described the
The one inverse emitter stage leading switch is connected.
Preferably, the DC circuit output cathode of the described first inverse colelctor electrode and described diode rectifier bridge leading switch is connected, institute
The DC circuit output negative pole stating the second inverse emitter stage and described diode rectifier bridge leading switch is connected.
As it has been described above, High Power Factor rectified three-phase circuit of the present invention, have the advantages that
1, High Power Factor rectified three-phase circuit of the present invention inhibits harmonic current, improves net side power factor；
2, High Power Factor rectified three-phase circuit circuit structure of the present invention is simple, efficiency is higher, DC voltage is steady.
Accompanying drawing explanation
Fig. 1 is shown as the circuit diagram of the High Power Factor rectified three-phase circuit of the present invention.
Element numbers explanation
1 three-phase alternating current electrical network
2 filter circuits
3 rectification circuits
4 on-off circuits
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention being described, those skilled in the art can be by disclosed by this specification
Content understand other advantages and effect of the present invention easily.The present invention can also be added by the most different detailed description of the invention
To implement or application, the every details in this specification can also be based on different viewpoints and application, in the essence without departing from the present invention
Various modification or change is carried out under god.
Refer to accompanying drawing.It should be noted that the diagram provided in the present embodiment illustrates that the present invention's is basic the most in a schematic way
Conception, the most graphic in component count, shape and size time only display with relevant assembly in the present invention rather than is implemented according to reality
Drawing, during its actual enforcement, the kenel of each assembly, quantity and ratio can be a kind of random change, and its assembly layout kenel is also
It is likely more complexity.
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.
The present embodiment provides a kind of High Power Factor rectified three-phase circuit, as it is shown in figure 1, described rectified three-phase circuit includes: three
Cross streams electrical network 1, filter circuit 2, rectification circuit 3 and on-off circuit 4.Described three-phase alternating current electrical network 1 includes the first fire
Line Ua, the second live wire Ub, the 3rd live wire Uc.Described filter circuit 2 includes three filter inductances, the i.e. first filter inductance
L1, the second filter inductance L2 and the 3rd filter inductance L3.Described rectification circuit 3 include diode rectifier bridge B1, first
Electrochemical capacitor E1, the second electrochemical capacitor E2, the first steady resistance R1 and the second steady resistance R2, described diode rectifier bridge
B1 has three brachium pontis, the i.e. first brachium pontis, the second brachium pontis, the 3rd brachium pontis.Described on-off circuit 4 includes that three two-way controlled are opened
Close, the i.e. first two-way gate-controlled switch BDS1, the second two-way gate-controlled switch BDS2, the 3rd two-way gate-controlled switch BDS3, first
The inverse switch RCS1 and second that leads is against leading switch RCS2.
Wherein, described three-phase alternating current electrical network 1 is for powering to whole three-phase controlled rectifier circuit.
Described filter circuit 2 is connected with described three-phase alternating current electrical network 1 and described on-off circuit 4, is used for filtering described three-phase alternating current
The alternating current of electrical network output, wherein, one end of the first filter inductance L1 and the first live wire Ua in described three-phase alternating current electrical network 1
It is connected, first ac input end of the diode rectifier bridge B1 in the other end of the first filter inductance L1 and described rectification circuit 3
A is connected, and is i.e. connected with the first brachium pontis midpoint of diode rectifier bridge B1；One end of second filter inductance L2 is intersected with described three
The second live wire Ub in stream electrical network 1 is connected, and the other end of the second filter inductance L2 is whole with the diode in described rectification circuit 3
The second ac input end B of stream bridge B1 is connected, and is i.e. connected with the second brachium pontis midpoint of diode rectifier bridge B1；3rd filtered electrical
One end of sense L3 is connected with the second live wire Uc in described three-phase alternating current electrical network 1, the other end of the 3rd filter inductance L3 and institute
The 3rd ac input end C stating the diode rectifier bridge B1 in rectification circuit 3 is connected, i.e. with the 3rd of diode rectifier bridge B1
Brachium pontis midpoint is connected, say, that three ac input ends of described diode rectifier bridge B1 are its three brachium pontis midpoints.
Described rectification circuit 3 is connected with described on-off circuit 3, is converted into unidirectional current for the alternating voltage inputted by filter circuit
Pressure, wherein, the first electrochemical capacitor E1 and the first steady resistance R1 is in parallel, the second electrochemical capacitor E2 and the second steady resistance R1
Parallel connection, exists between the first electrochemical capacitor E1, the first steady resistance R1 and the second electrochemical capacitor E2, the second steady resistance R1
DC link midpoint O2.The positive pole of described diode rectifier bridge B1 and the positive pole of the first electrochemical capacitor E1 are connected, and form direct current
The negative pole of circuit output cathode DCP, described diode rectifier bridge B1 and the negative pole of the second electrochemical capacitor E2 are connected, and form direct current
Circuit output negative pole DCN.
Described on-off circuit 4 is connected with described filter circuit 2 and rectification circuit 3, for compensation harmonic electric current, makes described harmonic wave
Current waveform is close to sinusoidal wave form, wherein, in one end of described first two-way gate-controlled switch BDS1 and described rectification circuit 3
The first ac input end A of diode rectifier bridge B1 is connected, and is i.e. connected with the first brachium pontis midpoint of diode rectifier bridge B1, institute
The other end IGBT emitter stage of leading switch RCS1 inverse with described first stating the first two-way gate-controlled switch BDS1 is connected, the most just
It is that the colelctor electrode of leading switch RCS2 inverse with described second is connected；One end of described second two-way gate-controlled switch BDS2 is whole with described
The second ac input end B of the diode rectifier bridge B1 in current circuit 3 is connected, i.e. with second brachium pontis of diode rectifier bridge B1
Midpoint is connected, the other end of described second two-way gate-controlled switch BDS2 and the described first inverse IGBT leading switch RCS1
(Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) emitter stage is connected, namely second inverse with described
The colelctor electrode leading switch RCS2 is connected；One end of described 3rd two-way gate-controlled switch BDS3 and two in described rectification circuit 3
The 3rd ac input end C of pole pipe rectifier bridge B1 is connected, and is i.e. connected with the 3rd brachium pontis midpoint of diode rectifier bridge B1, described
The other end of the 3rd two-way gate-controlled switch BDS3 IGBT emitter stage of leading switch RCS1 inverse with described first is connected, namely
The colelctor electrode of leading switch RCS2 inverse with described second is connected.The described first inverse IGBT colelctor electrode and described two leading switch RCS1
The DC circuit output cathode DCP of level pipe rectifier bridge B1 is connected, the described second inverse IGBT emitter stage leading switch RCS2 with
The DC circuit output negative pole DCN of described diode rectifier bridge B1 is connected.
The present embodiment is operated by following steps:
According to the operation principle of three-phase commutation bridge, in particular according to the harmonic current regularity of distribution of Three-Phase Rectifier Systems, and consider
The requirement of harmonic current standard, devises in three-phase power grid voltage difference interval, amounts to six intervals in a power cycle,
Use part forced commutation technology, control filter capacitor, the first electrochemical capacitor E1 and second electrolysis in the most described rectification circuit 3
The break-make of two-way gate-controlled switch in electric capacity E2, so control the size of equivalent capacity, capacitance energy storage number and polarity of voltage,
Expansion filter inductance, the most described first filter inductance L1, the second filter inductance L2, the angle of flow of the 3rd filter inductance L3, especially
It improves the current waveform referring to electrical network phase voltage near zero-crossing point, thus suppresses harmonic current and improve net side power factor, meets
Standard, such as IEC61000-3-2.
In the present embodiment, described first filter inductance L1, the second filter inductance L2, the inductance of the 3rd filter inductance L3 are
3.5mH, electric current is 15A.The electric capacity of the first electrochemical capacitor E1 is 2 × 680 μ F, the most pressure single 450V.Second electrochemical capacitor
The electric capacity of E2 is 2 × 680 μ F, the most pressure single 450V.First two-way gate-controlled switch BDS1, the second two-way gate-controlled switch BDS2,
3rd two-way gate-controlled switch BDS3 supports 35A/100 ° of C, 1200V, it is possible to use any existing or novel two-way gate-controlled switch
Pattern.Diode rectifier bridge B1 supports 35A/100 ° of C, and voltage is 1200V, and can use any two-way gate-controlled switch type
Formula.The first inverse inverse switch RCS2 that leads of switch RCS1 and second that leads supports 25A/100 ° of C, 1200V.Steady resistance R1 and R2
For 68k Ω/10W.Switching frequency is 20kHz.
High Power Factor rectified three-phase circuit of the present invention, in three-phase power grid voltage difference interval, uses part forced commutation
Technology, in control filter capacitor, two-way gate-controlled switch, inverse leading switch on-off, and then control filter inductance, the most just improve
Refer to the current waveform of electrical network phase voltage near zero-crossing point, thus realize suppressing harmonic current and improving the purpose of net side power factor.
Circuit structure of the present invention is simple, controls simplicity, can be widely used in the power electronics that all of front stage circuits is three-phase rectifier and becomes
In parallel operation, simple in construction, easily design, net side power factor is high, and DC voltage is steady.
In sum, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Any it is familiar with this skill
Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by the personage of art.Therefore, such as
All that in art, tool usually intellectual is completed under without departing from disclosed spirit and technological thought etc.
Effect is modified or changes, and must be contained by the claim of the present invention.
Claims (8)
1. a High Power Factor rectified three-phase circuit, it is characterised in that described High Power Factor rectified three-phase circuit includes: three-phase alternating current electrical network, filter circuit, rectification circuit and on-off circuit；
Described three-phase alternating current electrical network, for powering to whole three-phase controlled rectifier circuit；Including the first live wire, the second live wire, the 3rd live wire；
Described filter circuit, is connected with described three-phase alternating current electrical network, for filtering the alternating current of described three-phase alternating current electrical network output；Including the first filter inductance, the second filter inductance and the 3rd filter inductance；
Described rectification circuit, is connected with described on-off circuit, is converted into DC voltage for the alternating voltage inputted by filter circuit；Including diode rectifier bridge, the first electrochemical capacitor, the second electrochemical capacitor, the first steady resistance and the second steady resistance；Described diode rectifier bridge has the first brachium pontis, the second brachium pontis and the 3rd brachium pontis；
Described on-off circuit, is connected with described filter circuit and rectification circuit, for compensation harmonic electric current, makes harmonic current waveforms close to sinusoidal wave form；Including the first two-way gate-controlled switch, the second two-way gate-controlled switch, the 3rd two-way gate-controlled switch, the first inverse switch and second of leading against leading switch；
The harmonic current regularity of distribution according to Three-Phase Rectifier Systems, and the requirement of harmonic current standard, in three-phase voltage difference interval, one power cycle amounts to six intervals, use part forced commutation technology, control the break-make of two-way gate-controlled switch in the first electrochemical capacitor in described rectification circuit and the second electrochemical capacitor, so control the size of equivalent capacity, capacitance energy storage number and polarity of voltage, expand described first filter inductance, the second filter inductance, the angle of flow of the 3rd filter inductance.
High Power Factor rectified three-phase circuit the most according to claim 1, it is characterized in that: in described filter circuit, one end of the first filter inductance is connected with the first live wire in described three-phase alternating current electrical network, the other end of the first filter inductance is connected with the first ac input end of the diode rectifier bridge in described rectification circuit；One end of second filter inductance is connected with the second live wire in described three-phase alternating current electrical network, and the other end of the second filter inductance is connected with the second ac input end of the diode rectifier bridge in described rectification circuit；One end of 3rd filter inductance is connected with the second live wire in described three-phase alternating current electrical network, and the other end of the 3rd filter inductance is connected with the 3rd ac input end of the diode rectifier bridge in described rectification circuit.
High Power Factor rectified three-phase circuit the most according to claim 1, it is characterised in that: the first ac input end of described diode rectifier bridge, the second ac input end, the 3rd ac input end are the first brachium pontis midpoint, the second brachium pontis midpoint, the 3rd brachium pontis midpoint respectively.
High Power Factor rectified three-phase circuit the most according to claim 1, it is characterised in that: the first electrochemical capacitor and the first steady resistance in described rectification circuit are in parallel, and the second electrochemical capacitor and the second steady resistance are in parallel.
High Power Factor rectified three-phase circuit the most according to claim 4, it is characterised in that: there is DC link midpoint between the first electrochemical capacitor, the first steady resistance and the second electrochemical capacitor, the second steady resistance.
High Power Factor rectified three-phase circuit the most according to claim 1, it is characterized in that: the positive pole of described diode rectifier bridge and the positive pole of the first electrochemical capacitor are connected, form DC circuit output cathode, the negative pole of described diode rectifier bridge and the negative pole of the second electrochemical capacitor are connected, and form DC circuit output negative pole.
High Power Factor rectified three-phase circuit the most according to claim 1, it is characterized in that: described one end of first two-way gate-controlled switch is connected with the first input end A of the diode rectifier bridge in described rectification circuit, the other end of described first two-way gate-controlled switch is connected with the described first inverse emitter stage leading switch；Described one end of second two-way gate-controlled switch is connected with the second ac input end of the diode rectifier bridge in described rectification circuit, and the other end of described second two-way gate-controlled switch is connected with the described first inverse emitter stage leading switch；Described one end of 3rd two-way gate-controlled switch is connected with the 3rd ac input end of the diode rectifier bridge in described rectification circuit, and the other end of described 3rd two-way gate-controlled switch is connected with the described first inverse emitter stage leading switch.
High Power Factor rectified three-phase circuit the most according to claim 1, it is characterized in that: the DC circuit output cathode of the described first inverse colelctor electrode and described diode rectifier bridge leading switch is connected, the DC circuit output negative pole of the described second inverse emitter stage and described diode rectifier bridge leading switch is connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445142.XA CN103812314B (en) | 2012-11-08 | 2012-11-08 | High Power Factor rectified three-phase circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445142.XA CN103812314B (en) | 2012-11-08 | 2012-11-08 | High Power Factor rectified three-phase circuit |
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| CN103812314A CN103812314A (en) | 2014-05-21 |
| CN103812314B true CN103812314B (en) | 2016-09-14 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104749421A (en) * | 2015-04-03 | 2015-07-01 | 四川蓝讯宝迩电子科技有限公司 | Current-induction power source type high-voltage live displaying system |
| CN108604868B (en) * | 2016-02-06 | 2021-11-26 | 陈威伦 | Single-stage three-phase power supply conversion device and power transmission device |
| CN110336458B (en) * | 2019-05-10 | 2020-05-26 | 珠海格力电器股份有限公司 | Harmonic suppression circuit, power supply with same and air conditioner |
| CN111293895B (en) * | 2020-03-19 | 2021-07-09 | 深圳市艾克瑞电气有限公司 | Electric energy conversion circuit and power supply system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0789742B2 (en) * | 1987-02-18 | 1995-09-27 | 三菱電機株式会社 | Power converter |
| JP2857094B2 (en) * | 1995-12-28 | 1999-02-10 | 株式会社東芝 | Three-phase rectifier |
| CA2184663A1 (en) * | 1996-09-03 | 1998-03-04 | John C. Salmon | Harmonic correction of 3-phase rectifiers and converters |
| CN1753294A (en) * | 2004-09-22 | 2006-03-29 | 松下电器产业株式会社 | Direct current power supply apparatus and control method for the same, and a compressor drive apparatus |
| CN1988339A (en) * | 2006-12-31 | 2007-06-27 | 重庆大学 | Three phase rectifier bridge active power filter circuit using impedance coupling |
| CN201160257Y (en) * | 2008-02-03 | 2008-12-03 | 陈国金 | Harmonic suppression circuit for frequency convertor power source commutation |
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Effective date of registration: 20191023 Address after: 200433 Shanghai City, Yangpu District National Road No. 323 room 1102-125 Patentee after: Shanghai Auto Control System Co., Ltd. Address before: 200433 No. 1803, 1805, 1806, 335 and 1807, building 2, National Road, Yangpu District, Shanghai Patentee before: Shanghai Ruking Electronic Science & Technology Co., Ltd. |
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