CN105790271A - Active power electric filter circuit based on three-phase bridge inversion circuit and work method thereof - Google Patents
Active power electric filter circuit based on three-phase bridge inversion circuit and work method thereof Download PDFInfo
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- CN105790271A CN105790271A CN201610224568.0A CN201610224568A CN105790271A CN 105790271 A CN105790271 A CN 105790271A CN 201610224568 A CN201610224568 A CN 201610224568A CN 105790271 A CN105790271 A CN 105790271A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The present invention provides an active power electric filter circuit based on a three-phase bridge inversion circuit and a work method thereof, relates to a filter circuit, and especially relates to an active power electric filtering circuit based on the three-phase bridge inversion circuit. The present invention provides an active power electric filter circuit based on three-phase bridge inversion circuit and the work method thereof with small switch loss, the much number of output level, the high output voltage grade, the small output waveform fluctuation, the small electric power loss, the little number of direct current side capacitors, the simple control algorithm, small device size and low cost. The collector of a power switch tube 1 with an anti-parallel diode, the collector of a power switch tube with an anti-parallel diode and the collector of a power switch tube 5 with an anti-parallel diode are connected in order. The structure is simple, and the high level output is realized, the filtering effect is good, the output waveform is stable, the number of required devices is few, the loss is reduced and the package size is decreased.
Description
Technical field
The present invention relates to a kind of filter circuit, particularly relate to a kind of Active Power Filter-APF circuit based on three-phase inverter bridge circuit.
Background technology
Active Power Filter-APF is as a kind of novel harmonics and reactive compensation device, it is possible to achieve dynamic compensation.At present, what the main circuit of many level active power filters was most widely used mainly has diode clamp type and striding capacitance clamping type.But the quantity that these main circuit topological structures need power switch pipe is more, which increases the switching loss of many level active power filters and device volume, also substantially increase the cost of device.
State Intellectual Property Office 2015-3-11 discloses an application for a patent for invention (application number: 2014107564236, title: a kind of active filter system containing modular multi-level converter and control method thereof) have employed tandem type, the switching tube device used is few, power consumption is little, but, double; two level active filtering can only be realized, along with the change of power utilization environment, can not meet high pressure, job requirement high-power, particularly high frequency.
An application for a patent for invention (application number: 2015100691644 disclosed in State Intellectual Property Office 2015-5-20, title: a kind of many level Large Copacity fundamental flux compensation filtering system) disclose a kind of many level Large Copacity fundamental flux compensation filtering system, this system can only realize three level filtering, output voltage grade is low, and output waveform fluctuation is big, quality of power supply infringement is big.Adopting cascade, DC bus capacitor device is many, and control algolithm is complicated.
Summary of the invention
The present invention is directed to problem above, switching loss is little, output level number is many, output voltage grade high, output waveform fluctuation is little to provide one, and the quality of power supply is damaged the Active Power Filter-APF circuit based on three-phase inverter bridge circuit little, DC bus capacitor device is few, control algolithm is simple, device volume is little, cost is low and method of work thereof.
The technical scheme is that and include a three-phase bridge type inverse unit, capacitor cell and six power switch pipes and diode integrated unit；
Six described power switch pipes include power switch pipe and diode integrated unit one～power switch pipe and diode integrated unit six with diode integrated unit；
Described power switch pipe is connected with the A phase output terminal of described three-phase bridge type inverse unit with the input of diode integrated unit two respectively with diode integrated unit one and power switch pipe, power switch pipe is connected with the B phase output terminal of described three-phase bridge type inverse unit with the input of diode integrated unit four respectively with diode integrated unit three and power switch pipe, and power switch pipe is connected with the C phase output terminal of described three-phase bridge type inverse unit with the input of diode integrated unit six respectively with diode integrated unit five and power switch pipe；
Described power switch pipe and the outfan of diode integrated unit one, power switch pipe are connected with the outfan of diode integrated unit three and the outfan of power switch pipe and diode integrated unit five is sequentially connected, and described power switch pipe is sequentially connected with the outfan of diode integrated unit two, power switch pipe and the outfan of diode integrated unit four and the outfan of power switch pipe and diode integrated unit six；
Described capacitor cell described three-phase bridge type inverse unit in parallel, six described power switch pipes are connected with described capacitor cell with the outfan of diode integrated unit.
Described capacitor cell includes electric capacity one, electric capacity two and electric capacity three, described electric capacity one, electric capacity two and the series connection of electric capacity three forward；
The outfan of described power switch pipe and diode integrated unit one is connected between described electric capacity one and electric capacity two, and the outfan of described power switch pipe and diode integrated unit two is connected between described electric capacity two and electric capacity three.
Described three-phase bridge type inverse unit includes six power switch pipes with anti-paralleled diode, and six described power switch pipes with anti-paralleled diode are the power switch pipe six of power switch pipe with anti-paralleled diode one～with anti-paralleled diode；
The emitter stage of the described power switch pipe one with anti-paralleled diode is connected with the colelctor electrode of the power switch pipe two stated with anti-paralleled diode, the emitter stage of the described power switch pipe three with anti-paralleled diode is connected with the colelctor electrode of the power switch pipe four stated with anti-paralleled diode, and the emitter stage of the described power switch pipe five with anti-paralleled diode is connected with the colelctor electrode of the power switch pipe six stated with anti-paralleled diode；
The colelctor electrode of the described power switch pipe one with anti-paralleled diode, the colelctor electrode of the power switch pipe three with anti-paralleled diode and the colelctor electrode of power switch pipe five with anti-paralleled diode are sequentially connected；
The emitter stage of the described power switch pipe two with anti-paralleled diode, the emitter stage of the power switch pipe four with anti-paralleled diode and the emitter stage of power switch pipe six with anti-paralleled diode are sequentially connected；
The emitter stage of the described power switch pipe one with anti-paralleled diode and be provided with A phase output terminal between stating the colelctor electrode of the power switch pipe two with anti-paralleled diode, the emitter stage of the described power switch pipe three with anti-paralleled diode and be provided with B phase output terminal between stating the colelctor electrode of the power switch pipe four with anti-paralleled diode, the emitter stage of the described power switch pipe five with anti-paralleled diode and be provided with C phase output terminal between stating the colelctor electrode of the power switch pipe six with anti-paralleled diode；
The colelctor electrode of the described power switch pipe five with anti-paralleled diode and be connected to DC side power supply between stating the emitter stage of the power switch pipe six with anti-paralleled diode.
Described power switch pipe and diode integrated unit include diode one, diode two, diode three, diode four and power switch pipe, the positive terminal of described diode one is connected with the negative pole end of diode two, and the positive terminal of described diode three is connected with the negative pole end of diode four；
The negative pole end of described diode one is connected with the colelctor electrode of described power switch pipe, and the positive terminal of described diode two is connected with the emitter stage of described power switch pipe；
The negative pole end of described diode three is connected with the colelctor electrode of described power switch pipe, and the positive terminal of described diode four is connected with the emitter stage of described power switch pipe；
It is provided with described input between positive terminal and the negative pole end of diode two of described diode one, between positive terminal and the negative pole end of diode four of described diode three, is provided with described outfan.
Described power switch pipe is insulated gate bipolar transistor.
Described electric capacity one, electric capacity two and electric capacity three are electrochemical capacitor, and the capacitance of the capacitance of described electric capacity one, the capacitance of electric capacity two and electric capacity three is equal.
Work as follows:
1) power switch pipe one with anti-paralleled diode, the power switch pipe three with anti-paralleled diode and the power switch pipe with anti-paralleled diode five are both turned on,
A phase current exports through diode and the capacitance module of the power switch pipe one with anti-paralleled diode；
B phase current is through the diode of the power switch pipe three with anti-paralleled diode and capacitance module and capacitance module output；
C phase current exports through diode and the capacitance module of the power switch pipe five with anti-paralleled diode；
2) power switch pipe two with anti-paralleled diode, the power switch pipe four with anti-paralleled diode, power switch pipe six with anti-paralleled diode turn on,
A phase current exports through the power switch pipe of the power switch pipe two with anti-paralleled diode；
B phase current exports through the power switch pipe of the power switch pipe four with anti-paralleled diode；
C phase current exports through the power switch pipe of the power switch pipe six with anti-paralleled diode；
3) power switch pipe turns on diode integrated unit one, power switch pipe and diode integrated unit three, power switch pipe and diode integrated unit five,
A phase current exports with the diode one of diode integrated unit one, power switch pipe and the diode four of the power switch pipe of diode integrated unit one, power switch pipe and diode integrated unit one, electric capacity two and electric capacity three through power switch pipe；
B phase current exports with the diode one of diode integrated unit three, power switch pipe and the diode four of the power switch pipe of diode integrated unit three, power switch pipe and diode integrated unit three, electric capacity two and electric capacity three through power switch pipe；
C phase current exports with the diode one of diode integrated unit five, power switch pipe and the diode four of the power switch pipe of diode integrated unit one, power switch pipe and diode integrated unit one, electric capacity two and electric capacity three through power switch pipe；
4) power switch pipe turns on diode integrated unit two, power switch pipe and diode integrated unit four, power switch pipe and diode integrated unit six,
A phase current exports with the diode one of diode integrated unit two, power switch pipe and the diode four of the power switch pipe of diode integrated unit two, power switch pipe and diode integrated unit two, electric capacity two and electric capacity three through power switch pipe；
B phase current exports with the diode one of diode integrated unit four, power switch pipe and the diode four of the power switch pipe of diode integrated unit four, power switch pipe and diode integrated unit four, electric capacity two and electric capacity three through power switch pipe；
C phase current exports with the diode one of diode integrated unit six, power switch pipe and the diode four of the power switch pipe of diode integrated unit six, power switch pipe and diode integrated unit six, electric capacity two and electric capacity three through power switch pipe.
The present invention utilize six groups of power switch pipes be connected with the combination of three-phase inverter bridge circuit with diode integrated unit, realize four level filtering, compared with traditional diode clamp type active filter circuit, the present invention reduces the usage quantity of power switch pipe, make switching loss in the course of the work little, and owing to switching loss in the course of the work is little so that the present invention improves stability and work efficiency in application process.Six groups of power switch pipes make the present invention operationally there is mode of operation four kinds different from diode integrated unit with six groups of power switch pipes with anti-paralleled diode in three-phase inverter bridge circuit, can export four level simultaneously, it is achieved four level filtering.Compared with prior art, good wave filtering effect.
The present invention, compared with traditional striding capacitance clamping type active filter circuit, decreases the usage quantity of DC bus capacitor and power switch, reduces the switching loss of Active Power Filter-APF, adds present invention stability in application process, reduces cost.Owing to DC bus capacitor device is few, the control algolithm used is simple.Owing to decreasing device, so reducing encapsulation difficulty and the volume of Active Power Filter-APF main circuit.
The present invention is capable of four level filtering, and compared with tandem type active filter circuit, output and withstanding voltage grade are high, has adapted to the filtering demands of present stage high voltage, high-power and high frequency, has been more widely applied.And compared with tandem type active filter circuit, simple structure, corresponding control algolithm is simple, and owing to required device is few, output waveform is stable, it is little to fluctuate.In a word, present configuration is simple, it is achieved high level output, good wave filtering effect, and output waveform is stable, and required device is few, reduces loss and reduces encapsulation volume.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention,
Fig. 2 is the attachment structure schematic diagram of three-phase bridge type inverse unit in the present invention,
Fig. 3 is the attachment structure schematic diagram of power switch pipe and diode integrated unit in the present invention,
Fig. 4 is the A phase active filter circuit attachment structure schematic diagram of the present invention,
Fig. 4 A is the working state schematic representation one of the A phase active filter circuit of the present invention,
Fig. 4 B is the working state schematic representation two of the A phase active filter circuit of the present invention,
Fig. 4 C is the working state schematic representation three of the A phase active filter circuit of the present invention,
Fig. 4 D is the working state schematic representation four of the A phase active filter circuit of the present invention,
Fig. 5 is the attachment structure schematic diagram that the present invention is connected on electrical network,
Fig. 6 is striding capacitance type active filter circuit attachment structure schematic diagram in prior art,
Fig. 7 is diode clamp bit-type active filter circuit attachment structure schematic diagram in prior art；
In figure, VT is power switch pipe and diode integrated unit,
VT1 is power switch pipe and diode integrated unit one,
VT2 is power switch pipe and diode integrated unit two,
VT3 is power switch pipe and diode integrated unit three,
VT4 is power switch pipe and diode integrated unit four,
VT5 is power switch pipe and diode integrated unit five,
VT6 is power switch pipe and diode integrated unit six,
S1 is the power switch pipe one with anti-paralleled diode,
S2 is the power switch pipe two with anti-paralleled diode,
S3 is the power switch pipe three with anti-paralleled diode,
S4 is the power switch pipe four with anti-paralleled diode,
S5 is the power switch pipe five with anti-paralleled diode,
S6 is the power switch pipe six with anti-paralleled diode,
C1 is electric capacity one, and C2 is electric capacity two, and C3 is electric capacity three,
VS is DC side power supply,
D1 is diode one, and D2 is diode two, and D3 is diode three, and D4 is diode four,
T is power switch pipe, and L is inductor module.
Detailed description of the invention
The present invention is as it is shown in figure 1, include a three-phase bridge type inverse unit, capacitor cell and six power switch pipes and diode integrated unit VT；
Six described power switch pipes are power switch pipe and diode integrated unit one VT1～power switch pipe and diode integrated unit six VT6 with diode integrated unit；
Described power switch pipe is connected with the A phase output terminal of described three-phase bridge type inverse unit with the input of diode integrated unit two VT2 respectively with diode integrated unit one VT1 and power switch pipe, power switch pipe is connected with the B phase output terminal of described three-phase bridge type inverse unit with the input of diode integrated unit four VT4 respectively with diode integrated unit three VT3 and power switch pipe, and power switch pipe is connected with the C phase output terminal of described three-phase bridge type inverse unit with the input of diode integrated unit six respectively with diode integrated unit five and power switch pipe；
Described power switch pipe is sequentially connected with the outfan of diode integrated unit one VT1, power switch pipe and the outfan of diode integrated unit three VT3 and the outfan of power switch pipe and diode integrated unit five VT5, and described power switch pipe is sequentially connected with the outfan of diode integrated unit two VT2, power switch pipe and the outfan of diode integrated unit four VT4 and the outfan of power switch pipe and diode integrated unit six VT6；
Described capacitor cell described three-phase bridge type inverse unit in parallel, six described power switch pipes are connected with described capacitor cell with the outfan of diode integrated unit VT.By the break-make of power switch pipe gate pole in power switch pipe and diode integrated unit and in inverter circuit, thus realizing four kinds of mode of operations of the present invention, namely realizing four level and exporting.
Described capacitor cell includes electric capacity one C1, electric capacity two C2 and electric capacity three C3, described electric capacity one C1, electric capacity two C2 and the series connection of electric capacity three C3 forward；
The outfan of described power switch pipe and diode integrated unit one VT1 is connected between described electric capacity one C1 and electric capacity two C2, and the outfan of described power switch pipe and diode integrated unit two VT2 is connected between described electric capacity two C2 and electric capacity three C3.
The capacitance of electric capacity one C1, electric capacity two C2 and electric capacity three C3 is equal, and electric capacity one C1, electric capacity two C2 and electric capacity three C3 preferably employ electrochemical capacitor.Owing to electric capacity has energy storage effect so electric capacity one C1, electric capacity two C2 that utilize forward to connect and electric capacity three C3 substitutes the effect of the DC side power supply VS in independent three-phase bridge type inverse unit.In the capacitance module energy storage in a flash powered on.Now, the present invention works with the pattern of commutator, and when harmonic wave occurs in electrical network, capacitor releases electric energy also produces contrary current feedback electrical network by harmonic cancellation, promotes grid power transmission quality.
As shown in Figure 2, described three-phase bridge type inverse unit includes six power switch pipes with anti-paralleled diode, and six described power switch pipes with anti-paralleled diode are power switch pipe six S6 of power switch pipe one S1 with anti-paralleled diode～with anti-paralleled diode；
The emitter stage of described power switch pipe one S1 with anti-paralleled diode is connected with the colelctor electrode of power switch pipe two S2 stated with anti-paralleled diode, the emitter stage of described power switch pipe three S3 with anti-paralleled diode is connected with the colelctor electrode of power switch pipe four S4 stated with anti-paralleled diode, and the emitter stage of described power switch pipe five S5 with anti-paralleled diode is connected with the colelctor electrode of power switch pipe six S6 stated with anti-paralleled diode；
The colelctor electrode of described power switch pipe one S1 with anti-paralleled diode, the colelctor electrode of power switch pipe three S3 with anti-paralleled diode and the colelctor electrode of power switch pipe five S5 with anti-paralleled diode are sequentially connected；
The emitter stage of described power switch pipe two S2 with anti-paralleled diode, the emitter stage of power switch pipe four S4 with anti-paralleled diode and the emitter stage of power switch pipe six S6 with anti-paralleled diode are sequentially connected；
The emitter stage of described power switch pipe one S1 with anti-paralleled diode and be provided with A phase output terminal between stating the colelctor electrode of power switch pipe two S2 with anti-paralleled diode, the emitter stage of described power switch pipe three S3 with anti-paralleled diode and be provided with B phase output terminal between stating the colelctor electrode of power switch pipe four S4 with anti-paralleled diode, the emitter stage of described power switch pipe five S5 with anti-paralleled diode and be provided with C phase output terminal between stating the colelctor electrode of power switch pipe six S6 with anti-paralleled diode；
The colelctor electrode of described power switch pipe five S5 with anti-paralleled diode and be connected to DC side power supply VS between stating the emitter stage of power switch pipe six S6 with anti-paralleled diode, owing to electric capacity has energy storage effect, the present invention utilize electric capacity one C1, electric capacity two C2 that forward connects and electric capacity three C3 substitute DC side power supply VS.First passing through three-phase bridge type inverse unit when powering on is that DC side power supply VS fills energy, and electric capacity one C1, electric capacity two C2 and electric capacity three C3 that are sequentially connected in series in the present invention instead of DC side power supply VS, for whole invention energy storage.
As shown in Figure 3, described power switch pipe and diode integrated unit include diode one D1, diode two D2, diode three D3, diode four D4 and power switch pipe T, the positive terminal of described diode one D1 is connected with the negative pole end of diode two D2, and the positive terminal of described diode three D3 is connected with the negative pole end of diode four D4；
The negative pole end of described diode one D1 is connected with the colelctor electrode of described power switch pipe T, and the positive terminal of described diode two D2 is connected with the emitter stage of described power switch pipe T；
The negative pole end of described diode three D3 is connected with the colelctor electrode of described power switch pipe T, and the positive terminal of described diode four D4 is connected with the emitter stage of described power switch pipe T；
It is provided with described input between positive terminal and the negative pole end of diode two D2 of described diode one D1, between positive terminal and the negative pole end of diode four D4 of described diode three D3, is provided with described outfan.Six power switch pipes and diode integrated unit alternate conduction, thus forming different current trends, it is achieved four level outputs, output level number is many, good wave filtering effect.
Described power switch pipe T preferably employs insulated gate bipolar transistor.In the present invention, owing to needs realize alternate conduction, so wholly-controled device must be used, and insulated gate bipolar transistor is a kind of typical wholly-controled device, have input impedance height, switching speed is fast, drive circuit is simple, on state voltage is low, can bear the advantages such as high-voltage large current, improve the present invention tolerance to high-tension high-power so that application scenario of the present invention is more extensive.
Fig. 4 is the A phase active filter circuit attachment structure schematic diagram of the present invention, below for A phase, the working method of the present invention is described.
As shown in Figure 4 A, the power switch pipe one with anti-paralleled diode turns on,
A phase current exports through diode and the capacitance module of the power switch pipe one with anti-paralleled diode；
B phase is identical with the working method of A phase, and namely B phase current is through the diode of the power switch pipe three with anti-paralleled diode and capacitance module and capacitance module output；
C phase current exports through diode and the capacitance module of the power switch pipe five with anti-paralleled diode；
As shown in Figure 4 B, the power switch pipe two with anti-paralleled diode, the power switch pipe four with anti-paralleled diode, power switch pipe six with anti-paralleled diode turn on,
A phase current exports through the power switch pipe of the power switch pipe two with anti-paralleled diode；
B phase current exports through the power switch pipe of the power switch pipe four with anti-paralleled diode；
C phase current exports through the power switch pipe of the power switch pipe six with anti-paralleled diode；
As shown in Figure 4 C, power switch pipe and diode integrated unit one turn on,
A phase current exports with the diode one of diode integrated unit one, power switch pipe and the diode four of the power switch pipe of diode integrated unit one, power switch pipe and diode integrated unit one, electric capacity two and electric capacity three through power switch pipe；Now A phase
B phase is identical with the working method of A phase, and namely B phase current exports with the diode one of diode integrated unit three, power switch pipe and the diode four of the power switch pipe of diode integrated unit three, power switch pipe and diode integrated unit three, electric capacity two and electric capacity three through power switch pipe；
C phase is identical with the working method of A phase, and namely C phase current exports with the diode one of diode integrated unit five, power switch pipe and the diode four of the power switch pipe of diode integrated unit one, power switch pipe and diode integrated unit one, electric capacity two and electric capacity three through power switch pipe；
As shown in Figure 4 D, power switch pipe turns on diode integrated unit two, power switch pipe and diode integrated unit four, power switch pipe and diode integrated unit six,
A phase current exports with the diode one of diode integrated unit two, power switch pipe and the diode four of the power switch pipe of diode integrated unit two, power switch pipe and diode integrated unit two, electric capacity two and electric capacity three through power switch pipe；
B phase current exports with the diode one of diode integrated unit four, power switch pipe and the diode four of the power switch pipe of diode integrated unit four, power switch pipe and diode integrated unit four, electric capacity two and electric capacity three through power switch pipe；
C phase current exports with the diode one of diode integrated unit six, power switch pipe and the diode four of the power switch pipe of diode integrated unit six, power switch pipe and diode integrated unit six, electric capacity two and electric capacity three through power switch pipe.A, B, C three-phase all can export four level, and output level number is many, good wave filtering effect.
The present invention utilize six groups of power switch pipes be connected with the combination of three-phase inverter bridge circuit with diode integrated unit, realize four level filtering, compared with traditional diode clamp type active filter circuit, the present invention reduces the usage quantity of power switch pipe, make switching loss in the course of the work little, and owing to switching loss in the course of the work is little so that the present invention improves stability and work efficiency in application process.Six groups of power switch pipes make the present invention operationally there is mode of operation four kinds different from diode integrated unit with six groups of power switch pipes with anti-paralleled diode in three-phase inverter bridge circuit, can export four level simultaneously, it is achieved four level filtering.Compared with prior art, good wave filtering effect.
The present invention, compared with traditional striding capacitance clamping type active filter circuit, decreases the usage quantity of DC bus capacitor and power switch, reduces the switching loss of Active Power Filter-APF, adds present invention stability in application process, reduces cost.Owing to DC bus capacitor device is few, the control algolithm used is simple.Owing to decreasing device, so reducing encapsulation difficulty and the volume of Active Power Filter-APF main circuit.
The present invention is capable of four level filtering, and compared with tandem type active filter circuit, output and withstanding voltage grade are high, has adapted to the filtering demands of present stage high voltage, high-power and high frequency, has been more widely applied.And compared with tandem type active filter circuit, simple structure, corresponding control algolithm is simple, and owing to required device is few, output waveform is stable, it is little to fluctuate.In a word, present configuration is simple, it is achieved high level output, good wave filtering effect, and output waveform is stable, and required device is few, reduces loss and reduces encapsulation volume.
Claims (7)
1. the Active Power Filter-APF circuit based on three-phase inverter bridge circuit, it is characterised in that include a three-phase bridge type inverse unit, capacitor cell and six power switch pipes and diode integrated unit；
Six described power switch pipes are power switch pipe and diode integrated unit one～power switch pipe and diode integrated unit six with diode integrated unit；
Described power switch pipe is connected with the A phase output terminal of described three-phase bridge type inverse unit with the input of diode integrated unit two respectively with diode integrated unit one and power switch pipe, power switch pipe is connected with the B phase output terminal of described three-phase bridge type inverse unit with the input of diode integrated unit four respectively with diode integrated unit three and power switch pipe, and power switch pipe is connected with the C phase output terminal of described three-phase bridge type inverse unit with the input of diode integrated unit six respectively with diode integrated unit five and power switch pipe；
Described power switch pipe is sequentially connected with the outfan of diode integrated unit one, power switch pipe and the outfan of diode integrated unit three and the outfan of power switch pipe and diode integrated unit five, and described power switch pipe is sequentially connected with the outfan of diode integrated unit two, power switch pipe and the outfan of diode integrated unit four and the outfan of power switch pipe and diode integrated unit six；
Described capacitor cell described three-phase bridge type inverse unit in parallel, six described power switch pipes are connected with described capacitor cell with the outfan of diode integrated unit.
2. a kind of Active Power Filter-APF circuit based on three-phase inverter bridge circuit according to claim 1, it is characterised in that described capacitor cell includes electric capacity one, electric capacity two and electric capacity three, described electric capacity one, electric capacity two and the series connection of electric capacity three forward；
The outfan of described power switch pipe and diode integrated unit one is connected between described electric capacity one and electric capacity two, and the outfan of described power switch pipe and diode integrated unit two is connected between described electric capacity two and electric capacity three.
3. a kind of Active Power Filter-APF circuit based on three-phase inverter bridge circuit according to claim 1-2, it is characterized in that, described three-phase bridge type inverse unit includes six power switch pipes with anti-paralleled diode, and six described power switch pipes with anti-paralleled diode are the power switch pipe six of power switch pipe with anti-paralleled diode one～with anti-paralleled diode；
The emitter stage of the described power switch pipe one with anti-paralleled diode is connected with the colelctor electrode of the power switch pipe two stated with anti-paralleled diode, the emitter stage of the described power switch pipe three with anti-paralleled diode is connected with the colelctor electrode of the power switch pipe four stated with anti-paralleled diode, and the emitter stage of the described power switch pipe five with anti-paralleled diode is connected with the colelctor electrode of the power switch pipe six stated with anti-paralleled diode；
The colelctor electrode of the described power switch pipe one with anti-paralleled diode, the colelctor electrode of the power switch pipe three with anti-paralleled diode and the colelctor electrode of power switch pipe five with anti-paralleled diode are sequentially connected；
The emitter stage of the described power switch pipe two with anti-paralleled diode, the emitter stage of the power switch pipe four with anti-paralleled diode and the emitter stage of power switch pipe six with anti-paralleled diode are sequentially connected；
The emitter stage of the described power switch pipe one with anti-paralleled diode and be provided with A phase output terminal between stating the colelctor electrode of the power switch pipe two with anti-paralleled diode, the emitter stage of the described power switch pipe three with anti-paralleled diode and be provided with B phase output terminal between stating the colelctor electrode of the power switch pipe four with anti-paralleled diode, the emitter stage of the described power switch pipe five with anti-paralleled diode and be provided with C phase output terminal between stating the colelctor electrode of the power switch pipe six with anti-paralleled diode；
The colelctor electrode of the described power switch pipe five with anti-paralleled diode and be connected to DC side power supply between stating the emitter stage of the power switch pipe six with anti-paralleled diode.
4. a kind of Active Power Filter-APF circuit based on three-phase inverter bridge circuit according to claim 3, it is characterized in that, described power switch pipe and diode integrated unit include diode one, diode two, diode three, diode four and power switch pipe, the positive terminal of described diode one is connected with the negative pole end of diode two, and the positive terminal of described diode three is connected with the negative pole end of diode four；
The negative pole end of described diode one is connected with the colelctor electrode of described power switch pipe, and the positive terminal of described diode two is connected with the emitter stage of described power switch pipe；
The negative pole end of described diode three is connected with the colelctor electrode of described power switch pipe, and the positive terminal of described diode four is connected with the emitter stage of described power switch pipe；
It is provided with described input between positive terminal and the negative pole end of diode two of described diode one, between positive terminal and the negative pole end of diode four of described diode three, is provided with described outfan.
5. a kind of Active Power Filter-APF circuit based on three-phase inverter bridge circuit according to claim 4, it is characterised in that described power switch pipe is insulated gate bipolar transistor.
6. a kind of Active Power Filter-APF circuit based on three-phase inverter bridge circuit according to claim 4, it is characterized in that, described electric capacity one, electric capacity two and electric capacity three are electrochemical capacitor, and the capacitance of the capacitance of described electric capacity one, the capacitance of electric capacity two and electric capacity three is equal.
7. the method for work of a kind of Active Power Filter-APF circuit based on three-phase inverter bridge circuit according to claim 6, it is characterised in that work as follows:
1) power switch pipe one with anti-paralleled diode, the power switch pipe three with anti-paralleled diode and the power switch pipe with anti-paralleled diode five are both turned on,
A phase current exports through diode and the capacitance module of the power switch pipe one with anti-paralleled diode；
B phase current is through the diode of the power switch pipe three with anti-paralleled diode and capacitance module and capacitance module output；
C phase current exports through diode and the capacitance module of the power switch pipe five with anti-paralleled diode；
2) power switch pipe two with anti-paralleled diode, the power switch pipe four with anti-paralleled diode, power switch pipe six with anti-paralleled diode turn on,
A phase current exports through the power switch pipe of the power switch pipe two with anti-paralleled diode；
B phase current exports through the power switch pipe of the power switch pipe four with anti-paralleled diode；
C phase current exports through the power switch pipe of the power switch pipe six with anti-paralleled diode；
3) power switch pipe turns on diode integrated unit one, power switch pipe and diode integrated unit three, power switch pipe and diode integrated unit five,
A phase current exports with the diode one of diode integrated unit one, power switch pipe and the diode four of the power switch pipe of diode integrated unit one, power switch pipe and diode integrated unit one, electric capacity two and electric capacity three through power switch pipe；
B phase current exports with the diode one of diode integrated unit three, power switch pipe and the diode four of the power switch pipe of diode integrated unit three, power switch pipe and diode integrated unit three, electric capacity two and electric capacity three through power switch pipe；
C phase current exports with the diode one of diode integrated unit five, power switch pipe and the diode four of the power switch pipe of diode integrated unit one, power switch pipe and diode integrated unit one, electric capacity two and electric capacity three through power switch pipe；
4) power switch pipe turns on diode integrated unit two, power switch pipe and diode integrated unit four, power switch pipe and diode integrated unit six,
A phase current exports with the diode one of diode integrated unit two, power switch pipe and the diode four of the power switch pipe of diode integrated unit two, power switch pipe and diode integrated unit two, electric capacity two and electric capacity three through power switch pipe；
B phase current exports with the diode one of diode integrated unit four, power switch pipe and the diode four of the power switch pipe of diode integrated unit four, power switch pipe and diode integrated unit four, electric capacity two and electric capacity three through power switch pipe；
C phase current exports with the diode one of diode integrated unit six, power switch pipe and the diode four of the power switch pipe of diode integrated unit six, power switch pipe and diode integrated unit six, electric capacity two and electric capacity three through power switch pipe.
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| CN201610224568.0A CN105790271B (en) | 2016-04-12 | 2016-04-12 | A kind of working method of the Active Power Filter-APF circuit based on three-phase inverter bridge circuit |
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| CN201610224568.0A CN105790271B (en) | 2016-04-12 | 2016-04-12 | A kind of working method of the Active Power Filter-APF circuit based on three-phase inverter bridge circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113067336A (en) * | 2021-05-18 | 2021-07-02 | 哈尔滨理工大学 | Three-level active filter based on model predictive control |
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| US20060033479A1 (en) * | 2004-08-11 | 2006-02-16 | Uis Abler Electronics Co., Ltd. | Three-phase three-wire active power filter |
| CN102801348A (en) * | 2012-06-11 | 2012-11-28 | 上海电机学院 | Three-phase five-level inverter |
| CN204103797U (en) * | 2014-07-18 | 2015-01-14 | 山东大学 | The T-shaped inverter of a kind of accurate Z source three level |
| CN205544284U (en) * | 2016-04-12 | 2016-08-31 | 国网江苏省电力公司扬州供电公司 | Active power filter circuit based on three -phase bridge type inversion circuit |
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Patent Citations (4)
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|---|---|---|---|---|
| US20060033479A1 (en) * | 2004-08-11 | 2006-02-16 | Uis Abler Electronics Co., Ltd. | Three-phase three-wire active power filter |
| CN102801348A (en) * | 2012-06-11 | 2012-11-28 | 上海电机学院 | Three-phase five-level inverter |
| CN204103797U (en) * | 2014-07-18 | 2015-01-14 | 山东大学 | The T-shaped inverter of a kind of accurate Z source three level |
| CN205544284U (en) * | 2016-04-12 | 2016-08-31 | 国网江苏省电力公司扬州供电公司 | Active power filter circuit based on three -phase bridge type inversion circuit |
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| CN113067336A (en) * | 2021-05-18 | 2021-07-02 | 哈尔滨理工大学 | Three-level active filter based on model predictive control |
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