CN107834880A - A kind of new Z-source inverter topological structure - Google Patents
A kind of new Z-source inverter topological structure Download PDFInfo
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- CN107834880A CN107834880A CN201711116238.0A CN201711116238A CN107834880A CN 107834880 A CN107834880 A CN 107834880A CN 201711116238 A CN201711116238 A CN 201711116238A CN 107834880 A CN107834880 A CN 107834880A
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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
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
Abstract
New Z-source inverter topological structure of the present invention, switching tube S is added in Z source network primes7With electric capacity C3.The new Z-source inverter topological structure also includes 6 inductance value identical inductance L1~L6, 2 capacitance identical electric capacity C1~C2And 12 model identical diode D1~D12, wherein L1、L3、L5、D1~D6Form upper switch inductance unit, L2、L4、L6、D7~D12Form lower switch inductance unit.The program improves the boost capability of Z-source inverter, overcomes abnormal operating state defect existing for Z-source inverter.
Description
Technical field
The present invention relates to Z-source inverter field, specifically a kind of new Z-source inverter topological structure.
Background technology
At present, electric and electronic power converter technique has been widely applied in renewable energy power generation.Inverter is wherein
Indispensable electronic power converter.
Practice have shown that the whether excellent height that directly decide the renewable energy power generation quality of power supply of inverter performance.
Conventional voltage source type inverter and current source inverter pass through long-run development and extensive use, nowadays in motor driving, sensing
The conventional inversion application fields such as heating, static var compensator and active power filtering show good application effect.
But although Z-source inverter has been widely applied since proposition in renewable energy power generation field, simultaneously
Also exposure has Z-source inverter topology boost capability to be present weak and the defects of abnormal operating state be present.Therefore, this
Invention proposes a kind of new Z-source inverter topology, for improving the boost capability of Z-source inverter, and for overcoming the inversion of Z sources
Abnormal operating state defect existing for device.
The content of the invention
It is an object of the present invention to provide a kind of new Z-source inverter topological structure, for improving the liter of Z-source inverter
Pressure energy power, and for overcoming abnormal operating state defect existing for Z-source inverter.
In order to solve the above technical problems, the invention provides a kind of new Z-source inverter topological structure, including dc source
Udc, the dc source UdcPositive pole and diode DinAnode be connected, diode DinNegative electrode respectively with the 7th switching tube S7
First end and the 3rd electric capacity C3Positive pole be connected, the 7th switching tube S7The second end respectively with the first electric capacity C1Positive pole and
Five inductance L5First end be connected, the 5th inductance L5The second end respectively with the second electric capacity C2Positive pole, first switch pipe S1
One end, the 3rd switching tube S3First end and the 5th switching tube S5First end be connected；
First switch pipe S1The second end respectively with the first output end a of inverter and the 4th switching tube S4First end phase
Even, the 3rd switching tube S3The second end respectively with the second output end b of inverter and the 6th switching tube S6First end be connected,
Five switching tube S5The second end the 3rd output end c and second switch pipe S with inverter respectively2First end be connected；
Second switch pipe S2The second end respectively with the 4th switching tube S4The second end, the 6th switching tube S6The second end,
One electric capacity C1Negative pole and the second inductance L2First end be connected；
Second inductance L2The second end respectively with the second electric capacity C2Negative pole, the 3rd electric capacity C3Negative pole and dc source Udc
Negative pole be connected；
Wherein, the second inductance L2Inductance value and the 5th inductance L5Inductance value it is equal, the first electric capacity C1Capacitance and the
Two electric capacity C2Capacitance it is equal.
Preferably, the 7th switching tube S7The second end and the first electric capacity C1Positive pole and the 5th inductance L5First end it
Between be provided with the first inductance L1, the 3rd inductance L3, the first diode D1, the second diode D2, the 3rd diode D3, the 5th diode D5
With the 6th diode D6, the first inductance L1First end respectively with the first electric capacity C1Positive pole, the 7th switching tube S7The second end and
First diode D1Anode be connected, the first diode D1Negative electrode respectively with the 3rd diode D3Anode, the 3rd inductance
L3First end and the 5th diode D5Negative electrode be connected, the 5th diode D5Anode respectively with the second diode D2Anode
And the first inductance L1The second end be connected, the second diode D2Negative electrode respectively with the 3rd inductance L3The second end and the six or two pole
Pipe D6Anode be connected, the 6th diode D6Negative electrode respectively with the 3rd diode D3Negative electrode and the 5th inductance L5First end
It is connected；
Second switch pipe S2The second end, the 4th switching tube S4The second end, the 6th switching tube S6The second end and first electricity
Hold C1Negative pole and the second inductance L2First end between be provided with the 8th diode D8, the 9th diode D9, the tenth diode D10、
11st diode D11With the 12nd diode D12, the 4th inductance L4With the 6th inductance L6；6th inductance L6First end difference
With second switch pipe S2The second end, the 4th switching tube S4The second end, the 6th switching tube S6The second end, the tenth diode D10
Anode and the first electric capacity C1Negative pole be connected, the 6th inductance L6The second end respectively with the 12nd diode D12Anode and
Nine diode D9Anode be connected, the tenth diode D10Negative electrode respectively with the 12nd diode D12Negative electrode, the 4th inductance L4
First end and the 8th diode D8Anode be connected, the 9th diode D9Negative electrode respectively with the 11st diode D11Anode
And the 4th inductance L4The second end be connected, the 8th diode D8Negative electrode and the 11st diode D11Negative electrode with the second inductance
L2First end be connected；
The new Z-source inverter topological structure also includes the 4th diode D4With the 7th diode D7；4th diode D4's
Negative electrode respectively with the 5th inductance L5The second end, the second electric capacity C2Positive pole, first switch pipe S1First end, the 3rd switching tube
S3First end and the 5th switching tube S5First end be connected, the 4th diode D4Anode respectively with the second diode D2The moon
Pole, the 3rd inductance L3The second end and the 6th diode D6Anode be connected；7th diode D7Anode respectively with the 9th 2 pole
Pipe D9Negative electrode, the 11st diode D11Anode and the 4th inductance L4The second end be connected, the 7th diode D7Negative electrode difference
With the second inductance L2The second end, the second electric capacity C2Negative pole, the 3rd electric capacity C3Negative pole and dc source UdcNegative pole be connected；
Wherein, the first inductance L1, the second inductance L2, the 3rd inductance L3, the 4th inductance L4, the 5th inductance L5With the 6th inductance
L6, inductance value is equal；
Wherein, the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the 5th diode D5、
6th diode D6, the 7th diode D7, the 8th diode D8, the 9th diode D9, the tenth diode D10, the 11st diode
D11With the 12nd diode D12, there is identical diode model.
Compared with prior art, the advantage of the invention is that：
(1) present invention adds switching tube S in Z source network primes7With electric capacity C3, switching tube S7With electric capacity C3Can be Z sources net
Network reverse direction current flow provides path, smaller or inverter is connect in Z source network inductance so as to solve traditional Z-source inverter
In the case that load lightens, as Z source network inductive currents drop to zero and interrupted, input diode electricity during non-pass-through state
The defects of stream is interrupted therewith, DC-link voltage diverging, and then can have new Z-source inverter and adapt to load wide variation
Advantage, can solve the problems, such as that existing Z-source inverter has the defects of abnormal operating state to a certain extent.
(2) the invention provides one kind to use 6 inductance value identical inductance L1~L6, 2 capacitance identical electric capacity C1
~C2And 12 model identical diode D1~D12New Z-source inverter topological structure, wherein L1、L3、L5、D1~D6Group
Into upper switch inductance unit, L2、L4、L6、D7~D12Lower switch inductance unit is formed, above-mentioned upper and lower switched inductors unit makes
With, the boost capability of inverter can be improved to a certain extent, and then can make Z-source inverter have adapt to input voltage it is big
The advantages of range.
As can be seen here, the present invention is compared with prior art, with prominent substantive distinguishing features and significantly progressive, its implementation
Beneficial effect be also obvious.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment 1 of the topological structure of new Z-source inverter of the present invention；
Fig. 2 is the structural representation of the embodiment 2 of the topological structure of new Z-source inverter of the present invention；
Fig. 3 is equivalent circuit when new Z-source inverter shown in Fig. 2 is in pass-through state；
Fig. 4 is equivalent circuit when new Z-source inverter shown in Fig. 2 is in non-pass-through state；
Fig. 5 is the simulation waveform schematic diagram of New Topological；
Fig. 6 is simulation waveform enlarged diagram of the New Topological under rated load condition；
Fig. 7 is simulation waveform enlarged diagram of the New Topological under light condition；
Fig. 8 is the capacitance voltage U of New TopologicalC3Simulation waveform schematic diagram；
Fig. 9 is the switching tube S of New Topological7Simulation waveform enlarged diagram.
Embodiment
To make technical scheme and advantage clearer, below in conjunction with accompanying drawing, to technical scheme
It is clearly and completely described.In the following specific embodiments, by new Z-source inverter topological structure of the present invention
Referred to as " New Topological ".
Embodiment 1：
As shown in figure 1, a kind of new Z-source inverter topological structure of the present invention, including dc source Udc, the direct current
Source UdcPositive pole and diode DinAnode be connected, diode DinNegative electrode respectively with the 7th switching tube S7First end and
Three electric capacity C3Positive pole be connected, the 7th switching tube S7The second end respectively with the first electric capacity C1Positive pole and the 5th inductance L5
One end is connected, the 5th inductance L5The second end respectively with the second electric capacity C2Positive pole, first switch pipe S1First end, the 3rd open
Close pipe S3First end and the 5th switching tube S5First end be connected；First switch pipe S1The second end respectively with inverter
One output end a and the 4th switching tube S4First end be connected, the 3rd switching tube S3The second end respectively with the second of inverter the output
Hold b and the 6th switching tube S6First end be connected, the 5th switching tube S5The second end respectively with the 3rd output end c of inverter with
And second switch pipe S2First end be connected；Second switch pipe S2The second end respectively with the 4th switching tube S4The second end, the 6th
Switching tube S6The second end, the first electric capacity C1Negative pole and the second inductance L2First end be connected；Second inductance L2The second end point
Not with the second electric capacity C2Negative pole, the 3rd electric capacity C3Negative pole and dc source UdcNegative pole be connected.
In the present embodiment, the second inductance L2Inductance value and the 5th inductance L5Inductance value it is equal, the first electric capacity C1's
Capacitance and the second electric capacity C2Capacitance it is equal.
New Topological adds switching tube S in Z source network primes7With electric capacity C3, switching tube S7With electric capacity C3Can be Z sources net
Network reverse direction current flow provides path, solves existing Z-source inverter Z source network inductance is smaller or inverter connects load change
In the case of light, during non-pass-through state with Z source network inductive currents drop to zero and discontinuously, input diode electric current therewith
Discontinuously, the defects of DC-link voltage dissipates, so that new Z-source inverter has the advantages of adapting to load wide variation, enter
And solves abnormal operating state defect problem existing for existing Z-source inverter to a certain extent.
Embodiment 2：
As shown in Fig. 2 a kind of new Z-source inverter topological structure of the present invention, including dc source Udc, the direct current
Source UdcPositive pole and diode DinAnode be connected, diode DinNegative electrode respectively with the 7th switching tube S7First end and
Three electric capacity C3Positive pole be connected, the 7th switching tube S7The second end respectively with the first electric capacity C1Positive pole, the first inductance L1First
End and the first diode D1Anode be connected, the first diode D1Negative electrode respectively with the 3rd diode D3Anode, the 3rd
Inductance L3First end and the 5th diode D5Negative electrode be connected, the 5th diode D5Anode respectively with the second diode D2's
Anode and the first inductance L1The second end be connected；Second diode D2Negative electrode respectively with the 3rd inductance L3The second end, the six or two
Pole pipe D6Anode, the 4th diode D4Anode be connected, the 6th diode D6Negative electrode respectively with the 3rd diode D3Negative electrode
With the 5th inductance L5First end be connected, the 5th inductance L5The second end respectively with the 4th diode D4Negative electrode, the second electric capacity C2
Positive pole, first switch pipe S1First end, the 3rd switching tube S3First end and the 5th switching tube S5First end be connected；
First switch pipe S1The second end respectively with the first output end a of inverter and the 4th switching tube S4First end be connected, it is described
3rd switching tube S3The second end respectively with the second output end b of inverter and the 6th switching tube S6First end be connected, it is described
5th switching tube S5The second end the 3rd output end c and second switch pipe S with inverter respectively2First end be connected；Second
Switching tube S2The second end respectively with the 4th switching tube S4The second end, the 6th switching tube S6The second end, the tenth diode D10's
Anode, the 6th inductance L6First end and the first electric capacity C1Negative pole be connected；6th inductance L6The second end respectively with the 12nd
Pole pipe D12Anode and the 9th diode D9Anode be connected, the tenth diode D10Negative electrode respectively with the 12nd diode D12
Negative electrode, the 4th inductance L4First end and the 8th diode D8Anode be connected, the 8th diode D8Negative electrode respectively with second
Inductance L2First end and the 11st diode D11Negative electrode be connected, the 11st diode D11Anode respectively with the 4th inductance L4
The second end, the 9th diode D9Negative electrode and the 7th diode D7Anode be connected, the second inductance L2The second end respectively with
Seven diode D7Negative electrode, the second electric capacity C2Negative pole and the 3rd electric capacity C3Negative pole and dc source UdcNegative pole be connected.
In the present embodiment, the first inductance L1, the second inductance L2, the 3rd inductance L3, the 4th inductance L4, the 5th inductance L5With
6th inductance L6, inductance value is equal；First electric capacity C1Capacitance and the second electric capacity C2Capacitance it is equal.
In the present embodiment, the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4,
Five diode D5, the 6th diode D6, the 7th diode D7, the 8th diode D8, the 9th diode D9, the tenth diode D10,
11 diode D11With the 12nd diode D12, there is identical diode model.Wherein, three, right side be arranged in parallel in Fig. 1
Arrow, from up to down successively represent inverter the first output end a, the second output end b and the 3rd output end c.Wherein, it is described
The first output end a, the second output end b and the 3rd output end c sequentially correspond to a phase output terminals, b phase output terminals and c of inverter
Phase output terminal.
New Z-source inverter topological structure of the present invention, boosting work is carried out by shoot-through zero vector, whole work
Process is divided into pass-through state and non-pass-through state, and its fundamental diagram is as shown in Figures 3 and 4.
New Z-source inverter topological structure of the present invention, meets symmetrical network
And in the case of switching frequency is sufficiently high, have
Wherein, in formula (1.2), ULiRepresent inductance LiCorresponding voltage, UCjRepresent electric capacity CjCorresponding voltage, UCIn expression
State voltage corresponding to electric capacity C, wherein i=1,2,3,4,5,6, j=1,2.
Wherein, when new Z-source inverter of the present invention is operated in shoot-through zero vector, it is claimed to be operated in pass-through state,
Now UPN=0, interior control switching tube S during this state7Shut-off, equivalent circuit are as shown in Figure 3.
With reference to Fig. 3, when new Z-source inverter of the present invention is operated in pass-through state, diode D1、D2、D3、D4、
D7、D8、D9And D10Conducting, D5、D6、D11And D12Shut-off, inductance L1、L3、L5And L2、L4、L6It is mutually in parallel and respectively by electric capacity C1
And C2Charging, inductance L1On voltage ULFor
UL=UC (1.3)
When new Z-source inverter of the present invention is operated in effective vector and traditional zero vector, it is claimed to be operated in non-
Pass-through state, inverter bridge is equivalent to a constant-current source under this state, interior control switching tube S during this state7Conducting, equivalent circuit
As shown in figure 4, diode D in Z source networks1、D2、D3、D4、D7、D8、D9And D10Shut-off, D5、D6、D11And D12Conducting, inductance L1、
L3、L5And L2、L4、L6Mutually connect and respectively to two electric capacity and load discharge, inductance L1On voltage be
Direct-current chain crest voltage is
UPN=UC-3UL。 (1.5)
In the present embodiment, new Z-source inverter of the present invention is in the straight-through time in a switch periods T
For t0, it is D to lead directly to dutycycle0=t0/T.During new Z-source inverter steady-state operation, meet voltage-second balance principle, i.e.,
Solve
Substitution formula (1.5) obtains direct-current chain crest voltage
In the present embodiment, the sensitizing factor of new Z-source inverter of the present invention is
Known by formula (1.9) and work as D0Boost function can be realized when≤1/4, and exports ac phase voltage peak value and is
In the present embodiment, the voltage gain of new Z-source inverter of the present invention is
It can be seen that New Topological, in the case where identical leads directly to dutycycle, boosting multiple is relatively large.
Under simple boosting modulation, the relation of both straight-through dutycycle and modulation factor meets
D0+M≤1。 (1.12)
In order to obtain boost capability as big as possible, set the relationship of the two as
D0+ M=1. (1.13)
D is obtained by formula (1.13)0And formula (1.11) is substituted into, the corresponding G and D that can obtain New Topological0Relational expression.By formula
(1.13) obtain M and substitute into formula (1.11), the corresponding G and M that can obtain New Topological relational expression.G based on New Topological with
D0Relational expression and G and M relational expression, it is seen that the present invention can use smaller straight-through account under the conditions of identical voltage gain
Sky than with higher modulation factor, advantageously reduce switching tube during the voltage stress during effective status and pass-through state
Current stress, improve the quality of output waveform.
To verify the performance of above-mentioned New Topological, build Matlab/Simulink simulation models and carry out simulating, verifying.Specifically
Simulation parameter sets as follows：Input power Udc=150V, Z source network inductance L1=L2=L3=L4=1mH, electric capacity C1=C2=
1000 μ F, switching frequency f=10kHz, filter inductance Lf=1mH, filter capacitor Cf=20 μ F, modulation factor M=0.8, it is straight-through to account for
Sky compares D0=0.13, simulation time 0.2s.Simulated effect is as shown in Figures 5 to 9.
Fig. 5 is the simulation waveform schematic diagram of New Topological, and four curves are followed successively by Z source networks electric capacity electricity from top to bottom in figure
Press UC1, Z source network inductive currents iL1, direct-current chain crest voltage UPNPhase voltage u is exported with a phasesa.It is from figure 5 it can be seen that new
The direct-current chain crest voltage of type topology exports ac phase voltage peak value in 170V or so in 400V or so, New Topological a phases.Can
See that New Topological has stronger boost capability.
Fig. 6 and Fig. 7 respectively illustrates New Topological each parameter simulation waveform under rated load condition and light condition
Enlarged diagram, three curves are followed successively by Z source inductance electric currents i from top to bottom in each figureL1, direct-current chain crest voltage UPNWith it is straight-through
Signal, two figures show that Z source inductance electric currents rise during pass-through state, declined during non-pass-through state, DC-link voltage
For square wave and its waveform state is just the same as through connect signal complementation.Z source inductances electric current is non-straight-through under rated load condition shown in Fig. 6
Zero is consistently greater than during state, DC-link voltage is the good square wave of waveform quality.Z source inductances electric current exists during underloading shown in Fig. 7
The non-pass-through state later stage is reduced to zero, inversely increases after zero passage and just reversely subtracts when next shoot-through zero vector signal arrives
It is small, and DC-link voltage waveform during inductive current reverse flow still keeps good.The simulation result shows, institute of the present invention
The New Topological stated, in underloading, Z source inductances electric current is still worked under continuous mode, and DC-link voltage is not distorted, and then
Demonstrating new Z-source inverter has the advantages of adapting to load wide variation.
Fig. 8 and Fig. 9 be the New Topological device under rated load condition, electric capacity C3With switching tube S7Associated arguments are imitated
True waveform.Electric capacity C shown in Fig. 83Voltage start impact later stablize always in 150V, size is identical with input voltage, can
See electric capacity C3Play a part of to DC input voitage filter, can effective guarantee Z source network input voltages stabilization.Shown in Fig. 9
For switching tube S7Simulation waveform enlarged diagram, it is followed successively by flows through S from top to bottom7The electric current i of anti-paralleled diodeS7、S7Driving letter
Number and through connect signal.In view of emulation corresponding to Fig. 9 is the emulation under rated load condition, S during non-pass-through state7Inverse parallel two
Pole pipe is constantly in ON operation state, electric current iS7Consistently greater than zero, two curves demonstrate S after scheming in (Fig. 9)7Drive signal
It is complementary with through connect signal.
To sum up it will be apparent that, new Z-source inverter topological structure of the present invention, the liter of Z-source inverter was both improved
Pressure energy power, also improve accommodation of the Z-source inverter to load.
Embodiment of above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to foregoing implementation
The present invention is described in detail mode, it will be understood by those within the art that：It still can be to foregoing each
Technical scheme described in embodiment is modified, or carries out equivalent substitution to which part technical characteristic；And these are repaiied
Change or replace, the essence of appropriate technical solution is departed from the scope of each embodiment technical scheme of the present invention.
Claims (2)
- A kind of 1. new Z-source inverter topological structure, it is characterised in that：Including dc source Udc, the dc source UdcPositive pole and diode DinAnode be connected, diode DinNegative electrode point Not with the 7th switching tube S7First end and the 3rd electric capacity C3Positive pole be connected, the 7th switching tube S7The second end respectively with first Electric capacity C1Positive pole and the 5th inductance L5First end be connected, the 5th inductance L5The second end respectively with the second electric capacity C2Positive pole, First switch pipe S1First end, the 3rd switching tube S3First end and the 5th switching tube S5First end be connected；First switch pipe S1The second end respectively with the first output end a of inverter and the 4th switching tube S4First end be connected, Three switching tube S3The second end respectively with the second output end b of inverter and the 6th switching tube S6First end be connected, the 5th switch Pipe S5The second end the 3rd output end c and second switch pipe S with inverter respectively2First end be connected；Second switch pipe S2The second end respectively with the 4th switching tube S4The second end, the 6th switching tube S6The second end, first electricity Hold C1Negative pole and the second inductance L2First end be connected；Second inductance L2The second end respectively with the second electric capacity C2Negative pole, Three electric capacity C3Negative pole and dc source UdcNegative pole be connected；Wherein, the second inductance L2Inductance value and the 5th inductance L5Inductance value it is equal, the first electric capacity C1Capacitance with second electricity Hold C2Capacitance it is equal.
- 2. new Z-source inverter topological structure according to claim 1, it is characterised in that：7th switching tube S7The second end and the first electric capacity C1Positive pole and the 5th inductance L5First end between be provided with the first inductance L1, the 3rd inductance L3, the first diode D1, the second diode D2, the 3rd diode D3, the 5th diode D5With the 6th diode D6, the first inductance L1First end respectively with the first electric capacity C1Positive pole, the 7th switching tube S7The second end and the first diode D1 Anode be connected, the first diode D1Negative electrode respectively with the 3rd diode D3Anode, the 3rd inductance L3First end and 5th diode D5Negative electrode be connected, the 5th diode D5Anode respectively with the second diode D2Anode and the first inductance L1 The second end be connected, the second diode D2Negative electrode respectively with the 3rd inductance L3The second end and the 6th diode D6Anode phase Even, the 6th diode D6Negative electrode respectively with the 3rd diode D3Negative electrode and the 5th inductance L5First end be connected；Second switch pipe S2The second end, the 4th switching tube S4The second end, the 6th switching tube S6The second end and the first electric capacity C1 Negative pole and the second inductance L2First end between be provided with the 8th diode D8, the 9th diode D9, the tenth diode D10, the tenth One diode D11With the 12nd diode D12, the 4th inductance L4With the 6th inductance L6；6th inductance L6First end respectively with Two switching tube S2The second end, the 4th switching tube S4The second end, the 6th switching tube S6The second end, the tenth diode D10Sun Pole and the first electric capacity C1Negative pole be connected, the 6th inductance L6The second end respectively with the 12nd diode D12Anode and the 9th 2 Pole pipe D9Anode be connected, the tenth diode D10Negative electrode respectively with the 12nd diode D12Negative electrode, the 4th inductance L4 One end and the 8th diode D8Anode be connected, the 9th diode D9Negative electrode respectively with the 11st diode D11Anode and Four inductance L4The second end be connected, the 8th diode D8Negative electrode and the 11st diode D11Negative electrode with the second inductance L2's First end is connected；The new Z-source inverter topological structure also includes the 4th diode D4With the 7th diode D7；4th diode D4Negative electrode Respectively with the 5th inductance L5The second end, the second electric capacity C2Positive pole, first switch pipe S1First end, the 3rd switching tube S3's First end and the 5th switching tube S5First end be connected, the 4th diode D4Anode respectively with the second diode D2Negative electrode, Three inductance L3The second end and the 6th diode D6Anode be connected；7th diode D7Anode respectively with the 9th diode D9 Negative electrode, the 11st diode D11Anode and the 4th inductance L4The second end be connected, the 7th diode D7Negative electrode respectively with Second inductance L2The second end, the second electric capacity C2Negative pole, the 3rd electric capacity C3Negative pole and dc source UdcNegative pole be connected；Wherein, the first inductance L1, the second inductance L2, the 3rd inductance L3, the 4th inductance L4, the 5th inductance L5With the 6th inductance L6, electricity Inductance value is equal；Wherein, the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the 5th diode D5, the 6th Diode D6, the 7th diode D7, the 8th diode D8, the 9th diode D9, the tenth diode D10, the 11st diode D11With 12nd diode D12, there is identical diode model.
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| CN (1) | CN107834880A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014050143A (en) * | 2012-08-29 | 2014-03-17 | Toyo Electric Mfg Co Ltd | Z-source inverter |
| CN104617806A (en) * | 2015-01-26 | 2015-05-13 | 闫朝阳 | Bidirectional energy flow Z-source three-phase converter |
-
2017
- 2017-11-13 CN CN201711116238.0A patent/CN107834880A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014050143A (en) * | 2012-08-29 | 2014-03-17 | Toyo Electric Mfg Co Ltd | Z-source inverter |
| CN104617806A (en) * | 2015-01-26 | 2015-05-13 | 闫朝阳 | Bidirectional energy flow Z-source three-phase converter |
Non-Patent Citations (2)
| Title |
|---|
| 张超等: "一种提高升压能力的改进型Z源逆变器", 《齐鲁工业大学学报》 * |
| 程志友等: "开关电感型Z源逆变器拓扑结构的设计与仿真", 《农业工程学报》 * |
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Application publication date: 20180323 |