CN203466745U - Multilevel inverter circuit - Google Patents
Multilevel inverter circuit Download PDFInfo
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- CN203466745U CN203466745U CN201190000879.XU CN201190000879U CN203466745U CN 203466745 U CN203466745 U CN 203466745U CN 201190000879 U CN201190000879 U CN 201190000879U CN 203466745 U CN203466745 U CN 203466745U
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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
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/487—Neutral point clamped inverters
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
A multilevel inverter circuit comprises a positive generator terminal (21) and a negative generator terminal (22) for connecting a generator (1) with a generator voltage, and also comprises an inverter bridge (10) for converting the generator voltage into an AC voltage at a bridge output end (19) which can be connected to a power supply grid (9), wherein the inverter bridge (10) is connected to the generator terminals (21, 22) via five terminals (11-15) of which a first terminal (11) is connected via a step-up converter (2) to the generator terminals (21, 22) for generating a stepped-up positive generator voltage, a second terminal (12) is connected directly to the positive generator terminal (21), and a fourth terminal (14) is connected directly to the negative generator terminal (22), a fifth terminal (15) is connected via a step-up converter (3) to the generator terminals (21, 22) for generating a stepped-up negative generator voltage, and a third terminal (13) is connected to the generator terminals (21, 22) via a capacitive voltage divider (C1/C2, C3/C4), the bridge output end (19) is connected to the first terminal (11) via a first series circuit comprising at least two semiconductor switches (S11, S12), to the second terminal (12) via a second series circuit comprising a diode (D2) and at least two semiconductor switches (S21, S22), to the third terminal (13) via two parallel series circuits each of which consists of a semiconductor switch (S31, S32) and a diode (D31, D32), to the fourth terminal (14) via a fourth series circuit comprising a diode (D4) and at least two semiconductor switches (S41, S42), and to the fifth terminal (15) via a fifth series circuit comprising at least two semiconductor switches (S51, S52).
Description
Technical field
The utility model relates to a kind of for by the multi-electrical level inverter circuit that feeds electric energy into power supply grid being generated by generator.
Background technology
Term " multi-electrical level inverter circuit " refers to that boost DC-DC actuator (being also referred to as boost converter) generates the system of an extra voltage level therein.
Described extra voltage level for example, for example, is used when the voltage of the voltage source (photovoltaic generator, fuel cell or wind-driven generator) for this inverter supply DC voltage is less than the instantaneous voltage value of power supply grid voltage of power supply grid (public power supply network), and this inverter circuit is fed to its voltage to this power supply grid.
The multi-electrical level inverter circuit of this type is known from document D E10020537Al.
Document D E102006010694B4 has disclosed a kind of multi-electrical level inverter circuit equally, is embodied in the bipolar switching neutral point of BS-NPC(clamper) in topological structure.Realized thus the circuit topological structure with five voltage levels, and it can be embodied in single-phase three-phase pattern in addition.These semi-conductive relatively high voltage stresss that use seem there is problem for this circuit topological structure.
Utility model content
Under this background, target of the present utility model is to improve known circuit topological structure by reducing these semi-conductive voltage stresss.
According to the utility model, a multi-electrical level inverter circuit comprises a positive generator terminal and a negative generator terminal, for generator is connected with generator voltage.This inverter circuit further comprises an inverter bridge, and for converting this generator voltage to AC voltage at electric bridge output, this inverter bridge can be connected to a power supply grid.This inverter bridge is received these positive generator terminals and negative generator terminal by five connecting terminals.A first terminal is connected to these generator terminals by a boost converter, for generating the positive generator voltage after boosting, second terminal is directly connected to this positive generator terminal, and the 4th terminal is directly connected to this negative generator terminal, a Five-terminals is connected to these generator terminals by a boost converter, for generating the negative generator voltage after boosting, and the 3rd terminal is connected to these generator terminals by a capacitor voltage divider.This inverter is characterised in that this electric bridge output is connected to this first terminal by comprising first series circuit of at least two semiconductor switchs, by comprising that second series circuit of a diode and at least two semiconductor switchs is connected to this second terminal, by two series circuits in parallel, be connected to the 3rd terminal, each series circuit comprises a semiconductor switch and a diode, by comprising that the 4th series circuit of a diode and at least two semiconductor switchs is connected to the 4th terminal, and by comprising that the 5th series circuit of at least two semiconductor switchs is connected to this Five-terminals.
A corresponding multi-electrical level inverter circuit has the semi-conductive advantage that can use low rated voltage, and this causes the saving of cost.
In the advantageous embodiment of this multi-electrical level inverter circuit, the first semiconductor switch is one of them common ground of this first series circuit, this second series circuit and these two series circuits in parallel, and/or the second semiconductor switch is one of them common ground of the 4th series circuit, the 5th series circuit and these two series circuits in parallel.In a further advantageous embodiment of this multi-electrical level inverter circuit, these switches of this second series circuit and this first series circuit form a common ground, and these switches of the 4th series circuit and a common ground of the 5th series circuit formation.In these methods, semiconductor switch is used in more than one series circuit.Correspondingly, the total quantity of semiconductor switch can be remained on minimum as far as possible.
In a further advantageous embodiment of this multi-electrical level inverter circuit, these diodes of these two series circuits in parallel have been distributed respectively further semiconductor switch, and these semiconductor switchs are arranged in this way with their diode corresponding to bridge joint on its rightabout under conducting state.In another further advantageous embodiment, these diodes of this second series circuit and the 4th series circuit have been distributed respectively further semiconductor switch, and these semiconductor switchs are arranged in this way with their diode corresponding to bridge joint on its rightabout under conducting state.These extra gapping switches make this inverter can carry out reactive power operation, and have defencive function simultaneously, because they allow by the maximum voltage limit on these switches half in this intermediate circuit voltage.
In the further advantageous embodiment of this multi-electrical level inverter circuit, this capacitor voltage divider has the series circuit being comprised of two capacitors between these generator terminals, and/or this capacitor voltage divider has the series circuit being formed by two capacitors between this first terminal and this Five-terminals.In both cases, the mid point that these series circuits that formed by corresponding capacitor are connected in series at this provides a reference potential.This reference potential can be provided directly to the 3rd terminal.
In a further advantageous embodiment of this multi-electrical level inverter circuit, the 3rd connecting terminals is received a neutral conductor of this power supply grid.In this way, can be fed in a single phase power supply electrical network or be fed in a heterogeneous power supply grid single-phase.
In a further advantageous embodiment of this multi-electrical level inverter circuit, this power supply grid is a three phase supply electrical network, and this electric bridge output is connected to one of them of these phase places of this power supply grid.
In a further advantageous embodiment of this multi-electrical level inverter circuit, for a control device that operates this inverter bridge be configured to described five terminals wherein between two, alternately switch this electric bridge output, these two terminals depend on that a current power supply grid voltage selects.In this way, can use modulator approach to carry out the efficient operation to this inverter circuit.
Accompanying drawing explanation
Below with reference to accompanying drawing, the utility model is explained in more detail, wherein:
Fig. 1 shows by way of example for the block diagram of multi-electrical level inverter principle is described,
Fig. 2 shows by way of example for the voltage distribution map of multi-electrical level inverter principle is described,
Fig. 3 a show by way of example explanation a function according to the block diagram of the embodiment of circuit of the present utility model,
Fig. 3 b shows the block diagram of Fig. 3 a of the further function of explanation by way of example,
Fig. 4 a shows the block diagram of Fig. 3 a of the further function of explanation under another phase of operation by way of example,
Fig. 4 b shows the block diagram of Fig. 3 a of the further function of explanation under other phase of operation by way of example,
Fig. 5 shows by way of example according to the schematic diagram of the further embodiment of a circuit of the present utility model, and
Fig. 6 shows by way of example according to the schematic diagram of the further embodiment of a circuit of the present utility model.
Fig. 7 shows by way of example according to the schematic diagram of the further embodiment of a circuit of the present utility model.
Embodiment
Fig. 1 shows by way of example for the block diagram of multi-electrical level inverter circuit is described.This circuit comprises a generator 1, particularly photovoltaic generator or fuel cell, has a positive generator output end 21 and a negative generator output end 22, and this generator voltage comes across this.This positive generator output end 21 is directly connected to second terminal 12, and this negative generator output end 22 is directly connected to the 4th terminal 14.In addition, this positive generator output end 21 is connected to a first terminal 11 by first boost converter 2, and this negative generator output end 22 is connected to a Five-terminals 15 by second boost converter 3.
Between this positive generator output end 21 and this negative generator output end 22, Fig. 1 shows a capacitor voltage divider, a series circuit that comprises a first capacitor C1 and a second capacitor C2, consists of.The mid point 23 of this capacitor voltage divider has defined a reference potential 7, and is directly connected to the 3rd terminal 13.
This boost converter 2 has the task of the positive generator current potential that appears at this positive generator output end 21 being converted to the positive generator voltage that the boosts voltage of this positive generator current potential (higher than).This boost converter 3 has the task of the negative generator current potential that appears at this negative generator output end 22 being converted to the negative generator voltage that the boosts voltage of this negative generator current potential (lower than).For clarity sake, Fig. 1 does not illustrate these two boost converters 2,3 and is connected to equally another generator current potential of this correspondence, or is alternately connected to this reference potential 7, to generate from it generator voltage that boosts accordingly.Known in the literature for example, is suitable as boost converter 2,3 for any circuit arrangement of this object and step-up/down transducer (Cuk, Sepic, Zeta or other converter circuits).
Second capacitor voltage divider being comprised of a 3rd capacitor C3 and the 4th capacitor C4 is disposed between this first terminal 11 and this Five-terminals 15, and it is connected to the corresponding output of distributed boost converter 2,3.This mid point of described voltage divider is connected to this reference potential 7 equally.This second capacitor voltage divider can be provided together with this first capacitor voltage divider, and also can be used as its alternative.Preferably, this capacitor voltage divider is shunted to equal part by this generator voltage, so as this reference potential 7 to be just positioned over this symmetrically and this negative generator current potential between.This kind of interconnection is also called as NPC inverter (neutral point clamper).
Under the help of this circuit arrangement shown in Fig. 1, can five different voltage levels be set at five terminals, 11 to 15 places, described voltage level generates from this positive generator current potential and this negative generator current potential of this generator 1.These five voltage levels can be connected to inverter output end 19 with a controlled handover operation sequence by inverter bridge 10 by a plurality of switches, and its mode is to make the DC voltage power being generated by this generator 1 be converted and as AC voltage power, be fed in the power supply grid 9 of a connection.For this electric current being smoothed to the inductor L of this power supply grid 9, be disposed between this inverter bridge 10 and this inverter output end 19.This power supply grid 9 can be connected to this reference potential 7 equally as shown.
In this case, this first terminal 11 is by being connected to this inverter output end 19 by the L shaped series circuit becoming of at least two switch S 11, S12 and this inductor.This second terminal 12 is connected to this inverter output end 19 by comprising a series circuit of a diode D1 and at least two switch S 21, S22 and this inductor L.Equally, the 4th terminal 14 is connected to this inverter output end 19 by comprising a series circuit of a diode D2 and at least two switch S 41, S42 and this inductor L.This Five-terminals 15 is connected to this inverter output end 19 by a series circuit that comprises at least two switch S 51, S52 and this inductor L.Finally, the 3rd terminal 13 is connected to this inverter output end 19 by two parallel access paths, and wherein each in these two access paths has a series circuit that comprises diode D3 of difference and D4 and at least one switch S 31 of difference and S32.By this way, these two parallel access paths bidirectional switch of common formation between the 3rd terminal 13 and this inverter output end 19.
These switch S 11 to S52 can be the semiconductor switchs of any type, and for example JFET, MOSFET, IGBT or thyristor, wherein also consider at the interior mutual dissimilar switch that uses side by side of this inverter bridge 10.Therefore, by way of example, these switch S 21 and S41 can be MOSFET, and remaining switch is IGBT.
By comprise at least two switches this series circuit (these switches be on the one hand these year pressure side 11,12,14 and 15 and on the other hand on these access paths between this inverter output end 19), the voltage stress of these switches that use has obtained advantageously reducing, so that if appropriate, can use the switch that rated voltage is 1200V, although the switch more expensive, more lossy that it is about 1700V that the crest voltage of the power supply grid 9 connecting in traditional multi-electrical level inverter has been used rated voltage necessitates.For example, if this multi-electrical level inverter is connected to an AC power supply grid having over the rms voltage of 600V, situation will be like this.
Fig. 2 shows a regularly plan by way of example, and under it is assisted, this inverter bridge 10 converts this generator DC voltage to AC voltage with this power supply grid frequency.Show the power supply grid voltage 100 of a half period.The currency that depends on this power supply grid voltage 100, this inverter bridge 10 is alternately switched between two adjacent voltage levels of these terminals 11-15.Therefore, by way of example, phase place A(wherein this power supply grid voltage 100 there is a tertiary voltage value 130 of the 3rd terminal 13 that appears at this inverter bridge 10 and appear at a value between the second voltage value 120 of second terminal 12 of this inverter bridge 10), this inverter bridge is alternately switched between these magnitudes of voltage.It is that the currency that depends on this power supply grid voltage 100 is selected that this tertiary voltage value 130 is output to the length that the length of these time periods of this inverter output end 19 is output to these time periods of this inverter output end 19 with respect to this second voltage value 120.Similarly, at phase place B, between this second voltage value 120 and first magnitude of voltage 110, alternately realized switching, this first magnitude of voltage appears at this first terminal 11 of this inverter bridge 10.At phase place C, this inverter bridge 10 is alternately switched again between this second voltage value 120 and this tertiary voltage value 130.Similarly, at the power supply grid voltage 100 of negative half-cycle, realized the timing between this tertiary voltage value 130, the 4th magnitude of voltage (it appears at the 4th terminal 14) and the 5th magnitude of voltage (it appears at this Five-terminals 15).
In a favourable modification of the inverter bridge 10 from Fig. 1, a plurality of switches of the different access paths between these terminals 11-15 and this inverter output end 19 can combine, to form a common switch.By way of example, can be in conjunction with this switch S 22 and this switch S 31 to form a common switch S 3, or in conjunction with switch S 32 and S42 to form a common switch S 3'.This causes a multi-electrical level inverter circuit as shown in Figure 6, and discusses in detail in the back.Equally can be in conjunction with switch S 12, S22 and S31 to form a common switch S 2, or switch S 32, S42 and S52 are to form a common switch S 2'.This causes a multi-electrical level inverter circuit according to Fig. 3 a to Fig. 4 b, and its function discusses in more detail below.
This current flowing (dotted line) illustrating in Fig. 3 a with at time shaft t(referring to Fig. 2) region A in the state of this circuit corresponding.This semiconductor valve S21 and S2 are unlocked.Rest switch is closed.Switch S 21 is regularly operated for pure active power with high-frequency.As a result, this current flowing changes between the path shown in the path shown in Fig. 3 a and Fig. 3 b.This is regularly normally maintained, as long as current power supply grid voltage is between this reference potential 7 and this positive generator current potential.
This current flowing (dotted line) illustrating in Fig. 4 a with time shaft t(referring to Fig. 2) region B in the state of this circuit corresponding.These semiconductor switchs S11 and S2 are unlocked.S11 is regularly operated for pure active power with high-frequency.This voltage being boosted by this boost converter 2 has been realized and being fed to.Due to the timing of this switch S 11, in the phase place that this current flowing is opened in this switch S 11, become the path shown in Fig. 4 b.This is regularly normally maintained, as long as current supply power voltage is on this positive generator current potential.
Correspondingly, the function for the circuit of negative half-cycle has obtained realization.
Fig. 5 shows according to a multi-electrical level inverter circuit of the present utility model further embodiment.In this case, a 3rd additional switch S 21 is integrated into this access path from this first terminal 11 to this power supply grid 9, described the 3rd switch while or the part from this second terminal 12 to this access path of this power supply grid 9.Similarly, this access path from this Five-terminals 15 to this power supply grid 9 comprises a 3rd additional switch S 41, its while or the part from the 4th terminal 14 to this access path of this power supply grid 9.As shown in the circuit in Fig. 3 a to Fig. 4 b, each in common switch S 2 and S2' forms a part for these access paths between this power supply grid 9 and a plurality of this terminal 11 to 15.
Due to this embodiment, the voltage stress of these semiconductor valves S11, S21, S2 and S41, S51 and S2' can advantageously reduce, because the magnitude of voltage after boosting now can be between three switches along separate routes.This makes to use and has more cost-benefit semiconductor switch.
In addition,, shown in an alternate embodiment, can carry out by an extra gapping switch 30 on the rightabout at this diode D2 this diode D2 in bridge joint this access path between this second terminal 12 and this power supply grid 9.Equally, can on the rightabout of this diode D4, by a gapping switch 31, carry out this diode D4 of bridge joint in this access path between the 4th terminal 14 and this power supply grid 9.These extra gapping switches 30 and 31 make this inverter can carry out reactive power operation, and have defencive function simultaneously, because they allow by the maximum voltage limit on these switch S 2 and S2' half in this intermediate circuit voltage.In one of this inverter circuit favourable formal operations, if these switch S 11 and S21 open this switch 30, close, and similarly, if switch S 41 and switch S 51 are opened this switch 31, close.
Fig. 6 shows according to this multi-electrical level inverter circuit of the present utility model further embodiment.This circuit is substantially with corresponding from the circuit of Fig. 3 a to Fig. 4 b, and difference is that these diodes D31, D32 can be distinguished bridge joint by gapping switch 32 and gapping switch 33 on the rightabout of this respective diode, and this is equally applicable to above-mentioned purpose., if this switch 32 can be operated to these switch S 11 and S2 opens, close, and correspondingly, if switch S 41 and switch S 2' open, this switch 33 cuts out herein.
These gapping switches 30 to 33 can be used alone or are combined with each during foregoing circuit is arranged.
As shown in Figure 7, according to concept of the present utility model, also can be used to three-phase inverter.In this case, by these inverter output ends 19a, 19b, 19c, the inverter bridge 10a of three isolation, 10b, 10c are respectively applied in a phase place that is fed to this three phase supply electrical network 9 of distributing to them.In this case, there is no need this mid point of this capacitor voltage divider as with reference to current potential 7 to be connected to the neutral conductor of this power supply grid 9.As a result, these modulator approaches (as space vector modulation, flat-top modulation etc.) of particularly describing in the literature become possibility.
Can by these inverter output ends 19a, 19b being connected to these two terminals of this power supply grid, by only two 10a, 10b in these inverter bridge, as a full-bridge, realizing and being fed in a single phase power supply electrical network simply equally, and without being connected to a neutral conductor.In this case, the mid point of this capacitor voltage divider also can keep the neutral conductor isolation from this power supply grid.
The different possibilities that operate these semiconductor switchs are known for those of ordinary skills, and need in context of the present utility model, not be further explained.
The utility model is not limited to described embodiment, and these embodiment can many different modes modify.Particularly, the feature of mentioning can embody outside mentioned combination.
Claims (11)
1. a multi-electrical level inverter circuit, comprise a positive generator terminal (21) and a negative generator terminal (22), for a generator (1) is connected with a generator voltage, and comprise an inverter bridge (10), for converting this generator voltage to an AC voltage at an electric bridge output (19), this inverter bridge can be connected to a power supply grid (9), wherein this inverter bridge (10) is connected to described positive generator terminal (21) and described negative generator terminal (22) by five terminals (11-15), wherein
-mono-the first terminal (11) is connected to these generator terminals (21,22) by a boost converter (2), for generating a positive generator voltage after boosting,
-mono-the second terminal (12) is directly connected to this positive generator terminal (21), and the 4th terminal (14) is directly connected to this negative generator terminal (22),
-mono-Five-terminals (15) is connected to these generator terminals (21,22) by a boost converter (3), for generating a negative generator voltage after boosting, and
-mono-the 3rd terminal (13) is connected to these generator terminals (21,22) by a capacitor voltage divider (C1/C2, C3/C4)
It is characterized in that this electric bridge output (19)
-by comprising that first series circuit of at least two semiconductor switchs (S11, S12) is connected to this first terminal (11),
-by comprising that second series circuit of a diode (D2) and at least two semiconductor switchs (S21, S22) is connected to this second terminal (12),
-by two series circuits in parallel, being connected to the 3rd terminal (13), each series circuit comprises a semiconductor switch (S31, S32) and a diode (D31, D32),
-by comprising that the 4th series circuit of a diode (D4) and at least two semiconductor switchs (S41, S42) is connected to the 4th terminal (14), and
-by comprising that the 5th series circuit of at least two semiconductor switchs (S51, S52) is connected to this Five-terminals (15).
2. multi-electrical level inverter circuit as claimed in claim 1, is characterized in that, first semiconductor switch (S2) is one of them a common ground of this first series circuit, this second series circuit and these two series circuits in parallel.
3. multi-electrical level inverter circuit as claimed in claim 2, is characterized in that, second semiconductor switch (S2') is one of them a common ground of the 4th series circuit, the 5th series circuit and these two series circuits in parallel.
4. the multi-electrical level inverter circuit as described in any one in claims 1 to 3, it is characterized in that, these switches (S21 of this second series circuit, S22) form a common ground with this first series circuit, and be, these switches (S41, S42) of the 4th series circuit form a common ground with the 5th series circuit.
5. the multi-electrical level inverter circuit as described in any one in claims 1 to 3, it is characterized in that, these diodes (D31 of these two series circuits in parallel, D32) distributed respectively further semiconductor switch (32,33), these semiconductor switchs be so disposed in case under conducting state their diode corresponding to bridge joint on its rightabout.
6. the multi-electrical level inverter circuit as described in any one in claims 1 to 3, it is characterized in that, these diodes (D2 of this second series circuit and the 4th series circuit, D4) distributed respectively further semiconductor switch (30,31), these semiconductor switchs be so disposed in case under conducting state their diode corresponding to bridge joint on its rightabout.
7. the multi-electrical level inverter circuit as described in any one in claims 1 to 3, it is characterized in that, this capacitor voltage divider has a series circuit, and this series circuit is formed by two capacitors (C1, C2) between described positive generator terminal (21) and described negative generator terminal (22).
8. multi-electrical level inverter circuit as claimed in claim 1, is characterized in that, this capacitor voltage divider has a series circuit, and this series circuit is formed by two capacitors (C3, C4) between this first terminal (11) and this Five-terminals (15).
9. multi-electrical level inverter circuit as claimed in claim 1, is characterized in that, the 3rd terminal (13) is connected to a neutral conductor of this power supply grid (9).
10. multi-electrical level inverter circuit as claimed in claim 1, is characterized in that, this power supply grid (9) is a three phase supply electrical network, and this electric bridge output (19) is connected to one of them of these phase places of this power supply grid (9).
11. multi-electrical level inverter circuit as claimed in claim 1, it is characterized in that, for a control device that operates this inverter bridge be configured to described five terminals (11-15) wherein between two, alternately switch this electric bridge output (19), these two terminals depend on that a current power supply grid voltage selects.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202010012993U DE202010012993U1 (en) | 2010-11-25 | 2010-11-25 | Multipoint inverter circuit |
| DE202010012993.1 | 2010-11-25 | ||
| PCT/EP2011/071059 WO2012069646A1 (en) | 2010-11-25 | 2011-11-25 | Multilevel inverter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203466745U true CN203466745U (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201190000879.XU Expired - Lifetime CN203466745U (en) | 2010-11-25 | 2011-11-25 | Multilevel inverter circuit |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN203466745U (en) |
| DE (1) | DE202010012993U1 (en) |
| WO (1) | WO2012069646A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110178301A (en) * | 2017-08-24 | 2019-08-27 | 深圳欣锐科技股份有限公司 | Voltage conversion circuit and battery charger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9413268B2 (en) | 2012-05-10 | 2016-08-09 | Futurewei Technologies, Inc. | Multilevel inverter device and method |
| CN102891611B (en) * | 2012-06-30 | 2014-10-08 | 华为技术有限公司 | Five-level power converter, and control method and control device for five-level power converter |
| TWI477053B (en) | 2012-08-16 | 2015-03-11 | Delta Electronics Inc | Hybrid dc-to-ac conversion system and method of operating the same |
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| CN103414365B (en) * | 2013-07-05 | 2015-06-03 | 东南大学 | Vector sequence selection method of diode-clamped five-level inverter |
| CN103346690B (en) | 2013-07-05 | 2016-03-30 | 华为技术有限公司 | A kind of multi-electrical level inverter and electric power system |
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| DE3525630A1 (en) * | 1985-07-18 | 1987-01-29 | Licentia Gmbh | Method for optimum matching of the voltage from a solar generator to a parallel-connected battery |
| SE511219C2 (en) * | 1998-01-27 | 1999-08-23 | Asea Brown Boveri | Inverter where the clamping diodes are replaced by an active clamping circuit |
| DE10020537A1 (en) | 2000-04-27 | 2001-12-13 | Fachhochschule Konstanz Fachbe | Inverter feeding AC mains from solar source, includes two or more DC current sources on input side of inverter bridge. |
| SE524014C2 (en) * | 2002-10-09 | 2004-06-15 | Abb Ab | Inverter and procedure for controlling an inverter |
| DE102006010694B4 (en) | 2006-03-08 | 2010-01-07 | Refu Elektronik Gmbh | Inverter circuit for extended input voltage range |
| DE102007026393B4 (en) * | 2007-06-06 | 2009-03-12 | Refu Elektronik Gmbh | Circuit arrangement and control method for an inverter with boost converter |
| FR2942088B1 (en) * | 2009-02-11 | 2011-03-11 | Converteam Technology Ltd | VOLTAGE INVERTER WITH 3N-4 LEVELS |
-
2010
- 2010-11-25 DE DE202010012993U patent/DE202010012993U1/en not_active Expired - Lifetime
-
2011
- 2011-11-25 WO PCT/EP2011/071059 patent/WO2012069646A1/en active Application Filing
- 2011-11-25 CN CN201190000879.XU patent/CN203466745U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110178301A (en) * | 2017-08-24 | 2019-08-27 | 深圳欣锐科技股份有限公司 | Voltage conversion circuit and battery charger |
| CN110178301B (en) * | 2017-08-24 | 2021-07-16 | 深圳欣锐科技股份有限公司 | Voltage conversion circuit and battery charger |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012069646A1 (en) | 2012-05-31 |
| DE202010012993U1 (en) | 2012-02-27 |
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