CN102710161B - Switching tube unit, inverter and generating system with inverter - Google Patents
Switching tube unit, inverter and generating system with inverter Download PDFInfo
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- CN102710161B CN102710161B CN201210107004.0A CN201210107004A CN102710161B CN 102710161 B CN102710161 B CN 102710161B CN 201210107004 A CN201210107004 A CN 201210107004A CN 102710161 B CN102710161 B CN 102710161B
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Abstract
The embodiment of the invention provides a switching tube unit, four inverters with the switching tube unit and a generating system with the inverter. The switching tube unit comprises eight diodes which are respectively in antiparallel connection with one diode and two diodes DF1 and DF2, the inverter further comprises four capacitors C1, C2, C3 and C4 besides the switching tube unit, the four capacitors are connected in parallel with two ends of a DC (Direct Current) power supply after being connected in series, a DC input positive end and a DC input negative end of the switching tube unit are respectively connected to a positive output end and a negative output end of the DC power supply; a first level end of the switching tube unit is connected to a joint of the capacitors C1 and C2, a second level end is connected to a joint of the capacitors C2 and C3, and a third level end is connected to a joint of the capacitors C3 and C4. The invention has the advantages that a clamping diode and a flying capacitor are omitted, and the number of semiconductor devices is fewer, so the structure is simple, the size is smaller, and the larger engineering application value is achieved.
Description
Technical field
The present invention relates to a kind of switching tube unit and inverter, specifically a kind of switching tube unit, and there is the inverter of this unit, and there is the electricity generation system of this inverter.
Background technology
The large capacity occasion of middle pressure, multi-electrical level inverter obtains larger application, five more common level structures are mainly diode clamp type and striding capacitance type structure at present, and diode clamp type multi-electrical level inverter is as shown in Fig. 1 a to Fig. 1 c, and striding capacitance type multi-electrical level inverter as shown in Figure 2.
As shown in Figure 1a, in diode clamp multi-level converter, clamp diode is because need to block many times of level voltages, conventionally adopt the diode series connection of multiple same nominal values, as shown in Figure 1 b, due to the dispersiveness of device and the impact of stray parameter, may cause the overvoltage at diode two ends, thereby need to all press measure and very large RC absorbing circuit, and causing systems bulky, cost increases.For this reason, existing document has proposed a kind of improvement topology, as shown in Fig. 1 c.This kind of topology power device quantity used is the same with Fig. 1 b topology, and this topological circuit can, by diode voltage clamper within single level voltage, in the situation that level number is more, have larger superiority.But there is total shortcoming in the many level of diode clamp type: the diode of clamper is more.
Shown in Fig. 2 is striding capacitance type five level topologys, and the diode that has replaced the clamped topology of conventional diode with electric capacity obtains clamped effect, and each discrete capacitor capacity equates.
Known to upper, the topology of traditional five level is bulky because having a large amount of catching diodes or striding capacitance to cause, and exists circuit long, the unequal many practical engineering application problems of dispelling the heat.And build in topological structure process the more difficult assurance of the consistency of electric capacity or diode.
Summary of the invention
The technical problem that the embodiment of the present invention will solve has been to provide a kind of switching tube unit and four kinds and has had the inverter of this kind of switching tube unit, makes inverter without catching diode and striding capacitance.
One of technical scheme that the present invention solves the problems of the technologies described above is: a kind of switching tube unit, comprise the first switching tube (T1), second switch pipe (T2), the 3rd switching tube (T3), the 4th switching tube (T4), the 5th switching tube (T5), the 6th switching tube (T6), the 7th switching tube (T7), the 8th switching tube (T8) and respectively inverse parallel are in first diode (D1) of above-mentioned 8 switching tubes, 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), and the 9th diode (DF1), the tenth diode (DF2),
The second end of the first switching tube (T1) is as the direct current input anode DC+ of switching tube unit; The second end of second switch pipe (T2) is connected with the first end of the first switching tube (T1), first end is connected with the second end of the 7th switching tube (T7), and the tie point of second switch pipe (T2) and the 7th switching tube (T7) is as the ac output end (AC) of this switching tube unit; The first end of the 7th switching tube (T7) is connected with the second end of the 8th switching tube (T8); The first end of the 8th switching tube (T8) is as the direct current input negative terminal (DC-) of switching tube unit;
The first end of the 3rd switching tube (T3), the second end of the first end of the 4th switching tube (T4) and the 6th switching tube (T6) is connected, after this tie point, point two articles of branch roads are connected respectively to the anode of the 9th diode (DF1) and the negative electrode of the tenth diode (DF2), the negative electrode of the 9th diode (DF1) is connected to the tie point of the first switching tube (T1) and second switch pipe (T2), anodic bonding to the seven switching tubes (T7) of the tenth diode (DF2) and the tie point of the 8th switching tube (T8), the second end of the 3rd switching tube (T3) is as the first level input (M1) of switching tube unit, the second end of the 4th switching tube (T4) is connected with the second end of the 5th switching tube (T5), the first end of the 5th switching tube (T5) is as the second electrical level input (M2) of switching tube unit, the first end of the 6th switching tube (T6) is as the 3rd level input (M3) of switching tube unit.
Two of the technical scheme that the present invention solves the problems of the technologies described above is: a kind of five-electrical level inverter with above-mentioned switching tube unit is provided, described inverter comprises the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), and described switching tube unit;
Described four electric capacity (C1, C2, C3, C4) are connected in parallel on DC power supply two ends after connecting successively;
The direct current input anode of described switching tube unit is linked the positive output end of DC power supply, the direct current input negative terminal of described switching tube unit is linked the negative output terminal of DC power supply, the first level input of switching tube unit is linked described the first electric capacity (C1), the contact of the second electric capacity (C2), the second electrical level input of switching tube unit is connected to described the second electric capacity (C2), the contact of the 3rd electric capacity (C3), the 3rd level input of switching tube unit is connected to described the 3rd electric capacity (C3), the contact of the 4th electric capacity (C4), the ac output end of described switching tube unit is as the first output of this inverter, described the second electric capacity (C2), the contact of the 3rd electric capacity (C3) is as the second output of this inverter.
Three of the technical scheme that the present invention solves the problems of the technologies described above is: a kind of single-phase full bridge five-electrical level inverter is provided, described inverter comprises the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), and two described switching tube unit;
Described four electric capacity (C1, C2, C3, C4) are connected in parallel on DC power supply two ends after connecting successively;
The direct current input anode (DC+) of two switching tube unit is all connected to the positive output end of described DC power supply, direct current input negative terminal (DC-) is all connected to the negative output terminal of described DC power supply, the first level end (M1) is all connected to the first electric capacity (C1), the contact of the second electric capacity (C2), second electrical level end (M2) is all connected to the second electric capacity (C2), the contact of the 3rd electric capacity (C3), the 3rd level end (M3) is all connected to the 3rd electric capacity (C3), the contact of the 4th electric capacity (C4), ac output end (AC) is all connected to electrical network or load.
Four of the technical scheme that the present invention solves the problems of the technologies described above is: a kind of three-phase three brachium pontis five-electrical level inverters are provided, described inverter comprises the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), and three described switching tube unit;
Described four electric capacity (C1, C2, C3, C4) are connected in parallel on DC power supply two ends after connecting successively;
The direct current input anode (DC+) of three described switching tube unit is all connected to the positive output end of described DC power supply, direct current input negative terminal (DC-) is all connected to the negative output terminal of described DC power supply, the first level end (M1) is all connected to the first electric capacity (C1), the contact of the second electric capacity (C2), second electrical level end (M2) is all connected to the second electric capacity (C2), the contact of the 3rd electric capacity (C3), the 3rd level end (M3) is all connected to the 3rd electric capacity (C3), the contact of the 4th electric capacity (C4), ac output end (AC) is all connected to electrical network or load.
Five of the technical scheme that the present invention solves the problems of the technologies described above is: a kind of three-phase and four-line five-electrical level inverter is provided, described inverter comprises the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), and four described switching tube unit;
Described four electric capacity (C1, C2, C3, C4) are connected in parallel on DC power supply two ends after connecting successively;
The direct current input anode (DC+) of four described switching tube unit is all connected to the positive output end of described DC power supply, direct current input negative terminal (DC-) is all connected to the negative output terminal of described DC power supply, the first level end (M1) is all connected to the first electric capacity (C1), the contact of the second electric capacity (C2), second electrical level end (M2) is all connected to the second electric capacity (C2), the contact of the 3rd electric capacity (C3), the 3rd level end (M3) is all connected to the 3rd electric capacity (C3), the contact of the 4th electric capacity (C4), ac output end (AC) is all connected to electrical network or load.
In the time that the switching tube in above-mentioned five embodiment adopts IGBT (insulated gate bipolar transistor), the first end of described switching tube all refers to emitter, and the second end all refers to collector electrode.
The present invention also provides a kind of electricity generation system with above-mentioned inverter.
The invention has the advantages that: than diode clamp type five level and striding capacitance type five level, clamp diode, striding capacitance are reduced, semiconductor device number is less, therefore simple in structure, small volume, and therefore reduced connection, guarantee consistency, thereby guarantee topological reliability of operation, there is larger engineering using value.
Accompanying drawing explanation
Fig. 1 a to Fig. 1 c is the Structural drawing of existing three kinds of diode clamp type multi-electrical level inverters.
Fig. 2 is the Structural drawing of existing striding capacitance type multi-electrical level inverter.
Fig. 3 is first embodiment of the invention switching tube cellular construction figure.
Fig. 4 is the encapsulating structure figure of Fig. 3.
Fig. 5 is the topology diagram of the inverter of second embodiment of the invention.
Fig. 6 a to Fig. 6 e is 5 kinds of operation mode figure of inverter shown in Fig. 5.
Fig. 7 is the single-phase full bridge five-electrical level inverter topology diagram of third embodiment of the invention.
Fig. 8 is the three-phase three-leg inverter topology diagram of fourth embodiment of the invention.
Fig. 9 is the three-phase four-line dc-to-ac converter topology diagram of fifth embodiment of the invention.
Embodiment
The first embodiment
Please refer to shown in Fig. 3, the present embodiment provides a kind of switching tube unit, described switching tube unit comprises that 8 switch transistor T 1, T2, T3, T4, T5, T6, T7, T8 and difference inverse parallel are in 8 diode D1, D2, D3, D4, D5, D6, D7, the D8 of above-mentioned 8 switching tubes, and diode DF1, DF2.
Switch transistor T 1, T2, T7, T8 connect successively, concrete: the second end of switch transistor T 1 is as the direct current input anode DC+ of switching tube unit; The second end of switch transistor T 2 is connected with the first end of switch transistor T 1, and first end is connected with the second end of switch transistor T 7, and the tie point of switch transistor T 2 and switch transistor T 7 is as the ac output end AC of this switching tube unit; The first end of switch transistor T 7 is connected with the second end of switch transistor T 8; The first end of switch transistor T 8 is as the direct current input negative terminal DC-of switching tube unit.
The first end of switch transistor T 3, the second end of the first end of switch transistor T 4 and switch transistor T 6 is connected, after this tie point, point two branch roads are connected respectively to the anode of diode DF1 and the negative electrode of diode DF2, the negative electrode of diode DF1 is connected to the tie point of switch transistor T 1 and switch transistor T 2, the anodic bonding of diode DF2 is the tie point with switch transistor T 8 to switch transistor T 7, the second end of switch transistor T 3 is as the first level input M1 of switching tube unit, the second end of switch transistor T 4 is connected with the second end of switch transistor T 5, the first end of switch transistor T 5 is as the second electrical level input M2 of switching tube unit, the first end of switch transistor T 6 is as the 3rd level input M3 of switching tube unit.
Described switching tube unit can be operated in 5 following mode:
H1 mode: switch transistor T 1, T2, T3, T4 conducting, other switching tube cut-offs;
H2 mode: switch transistor T 2, T3, T4, T7 conducting, other switching tube cut-offs;
H3 mode: switch transistor T 2, T4, T5, T7 conducting, other switching tube cut-offs;
H4 mode: switch transistor T 2, T5, T6, T7 conducting, other switching tube cut-offs;
H5 mode: switch transistor T 5, T6, T7, T8 conducting, other switching tube cut-offs.
As shown in Figure 4, above-mentioned switching tube unit can be used as a packaging part.
In the time that described switching tube adopts IGBT (insulated gate bipolar transistor), the first end of described switching tube refers to emitter, and the second end refers to collector electrode.
The second embodiment
Refer to Fig. 5, it is a kind of five-electrical level inverter of having applied the switching tube unit of the first embodiment, and in the present embodiment, five-electrical level inverter comprises capacitor C 1, C2, C3, C4, the switching tube unit of described the first embodiment.
Described capacitor C 1, C2, C3, C4 are connected in parallel on DC power supply (PV & DC/DC) two ends after connecting successively.
The direct current input anode of described switching tube unit is linked the positive output end of DC power supply (PV & DC/DC), the direct current input negative terminal of described switching tube unit is linked the negative output terminal of DC power supply (PV & DC/DC), the first level input of switching tube unit is linked described capacitor C 1, the contact of C2, the second electrical level input of switching tube unit is connected to described capacitor C 2, the contact of C3, the 3rd level input of switching tube unit is connected to described capacitor C 3, the contact of C4, the ac output end of described switching tube unit is as the first output a of this inverter, described capacitor C 2, the contact of C3 is as the second output n of this inverter.
The five-electrical level inverter of this embodiment can be applied in grid-connected occasion, also can be applied in from net occasion (stored energy application etc.).In the time being applied to grid-connected occasion, VG gets access to grid between the first output a of the inverter of the present embodiment and the second output n.In the time being applied to from net occasion, between the first output a of the inverter of the present embodiment and the second output n, connect load.But these two kinds of application scenarios, the operation principle of five-electrical level inverter is identical, below to be applied in grid-connected occasion as example, the operation principle of this five-electrical level inverter is described in detail.
Please refer to Fig. 6 a to Fig. 6 e, be 5 kinds of operation mode figure of five-electrical level inverter shown in Fig. 5.Shown in Fig. 6 a to Fig. 6 e, be respectively operation mode: H1, H2, H3, H4, H5.
H1 mode: switch transistor T 1, T2, T3, T4 conducting, other switching tube cut-offs, in the time that a point flows out electric current, through T1-T2-VG-C2-C1-T1, in the time that a point flows to electric current, through D2-D1-C1-C2-VG-D2;
H2 mode: switch transistor T 2, T3, T4, T7 conducting, other switching tube cut-offs.In the time that a point flows out electric current, through T3-DF1-T2-VG-C2-T3, in the time that a point flows to electric current, through T7-DF2-D3-C2-VG-T7;
H3 mode: switch transistor T 2, T4, T5, T7 conducting, other switching tube cut-offs, in the time that a point flows out electric current, through D5-T4-DF1-T2-VG-D5, in the time that a point flows to electric current, through T7-DF2-D4-T5-VG-T7;
H4 mode: switch transistor T 2, T5, T6, T7 conducting, other switching tube cut-offs, in the time that a point flows out electric current, through D6-DF1-T2-VG-C3-D6, in the time that a point flows to electric current, through T7-DF2-T6-C3-VG-T7;
H5 mode: switch transistor T 5, T6, T7, T8 conducting, other switching tube cut-offs, in the time that a point flows out electric current, through D8-D7-VG-C3-C4-D8, in the time that a point flows to electric current, through T7-T8-C4-C3-VG-T7.
In Fig. 6 a to Fig. 6 e, the path of conducting illustrates with heavy line, and the path of conducting is not shown in broken lines, though it should be noted that part not conducting have the switching tube of switching signal also to illustrate by fine line so that realize switching sequence.
Also please refer to Fig. 5, as further improvement, described five-electrical level inverter also comprises filter circuit, the harmonic wave being used in filtering output current, described filter circuit comprises inductance L 1, L2 and capacitor C, described inductance L 1 is connected between the first output a and electrical network or load of five-electrical level inverter, and described inductance L 2 is connected between the second output n and electrical network or load of five-electrical level inverter, and capacitor C is connected in parallel on the two ends of electrical network or load.
Described filter circuit can also be existing LC type or LL type structure.
Similar with the first embodiment, the switching tube unit in this embodiment can be made packaging part equally.
The 3rd embodiment
Referring to Fig. 7, is the single-phase full bridge five-electrical level inverter topology diagram of third embodiment of the invention.The difference of itself and above-mentioned the second embodiment is, comprise two switching tube unit described in the first embodiment, the direct current input anode DC+ of two switching tube unit is all connected to the positive output end of DC power supply (PV & DC/DC), the direct current input negative terminal DC-of two switching tube unit is all connected to the negative output terminal of DC power supply (PV & DC/DC), the first level end M1 of two switching tube unit is all connected to capacitor C 1, the contact of C2, the second electrical level end M2 of two switching tube unit is all connected to capacitor C 2, the contact of C3, the 3rd level end M3 of two switching tube unit is all connected to capacitor C 3, the contact of C4, the ac output end AC of two switching tube unit is all connected to electrical network or load.
During each in two switching tube unit in this embodiment, operation mode is identical with above-mentioned the second embodiment.
Similar with the first embodiment, packaging part all can be made in two switching tube unit in this embodiment.
The 4th embodiment
Referring to Fig. 8, is the three-phase three brachium pontis five-electrical level inverter topology diagrams of fourth embodiment of the invention.The difference of itself and above-mentioned the second embodiment is, comprise three switching tube unit described in the first embodiment, the direct current input anode DC+ of three switching tube unit is all connected to the positive output end of DC power supply (PV & DC/DC), the direct current input negative terminal DC-of three switching tube unit is all connected to the negative output terminal of DC power supply (PV & DC/DC), the first level end M1 of three switching tube unit is all connected to capacitor C 1, the contact of C2, the second electrical level end M2 of three switching tube unit is all connected to capacitor C 2, the contact of C3, the 3rd level end M3 of three switching tube unit is all connected to capacitor C 3, the contact of C4, the ac output end AC of three switching tube unit is all connected to electrical network or load.
The operation mode of above-mentioned three switching tube unit is identical with above-mentioned the second embodiment.
Similar with the first embodiment, packaging part all can be made in three switching tube unit in this embodiment.
The 5th embodiment
Referring to Fig. 9, is the three-phase and four-line five-electrical level inverter topology diagram of fifth embodiment of the invention.The difference of itself and above-mentioned the second embodiment is, comprise four switching tube unit described in the first embodiment, switching tube unit, the direct current input anode DC+ of four switching tube unit is all connected to the positive output end of DC power supply (PV & DC/DC), the direct current input negative terminal DC-of four switching tube unit is all connected to the negative output terminal of DC power supply (PV & DC/DC), the first level end M1 of four switching tube unit is all connected to capacitor C 1, the contact of C2, the second electrical level end M2 of four switching tube unit is all connected to capacitor C 2, the contact of C3, the 3rd level end M3 of four switching tube unit is all connected to capacitor C 3, the contact of C4, the ac output end AC of four switching tube unit is all connected to electrical network or load.
The operation mode of above-mentioned four switching tube unit is identical with above-mentioned the second embodiment.
Similar with the first embodiment, packaging part all can be made in four switching tube unit in this embodiment.
Switching tube in above-mentioned five embodiment can be MOSFET (metal-oxide layer-semiconductor-field-effect transistor) or IGBT (insulated gate bipolar transistor), IGCT (integrated gate commutated thyristor), IEGT (electron injection enhancement gate transistor) while specifically application, and this area those skilled in the art all know and replace later implementing circuit.
It should be noted that, can be solar cell in DC power supply (the PV & DC/DC) practical application in above-described embodiment, can also be other DC power supply.
The inverter of above-described embodiment is than diode clamp type five level and striding capacitance type five level, clamp diode, striding capacitance are reduced, semiconductor device number is less, therefore simple in structure, small volume, and therefore reduced connection, guarantee consistency, thereby guarantee topological reliability of operation, there is larger engineering using value.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a switching tube unit, it is characterized in that: comprise the first switching tube (T1), second switch pipe (T2), the 3rd switching tube (T3), the 4th switching tube (T4), the 5th switching tube (T5), the 6th switching tube (T6), the 7th switching tube (T7), the 8th switching tube (T8) and respectively inverse parallel are in first diode (D1) of above-mentioned 8 switching tubes, 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), and the 9th diode (DF1), the tenth diode (DF2),
The second end of the first switching tube (T1) is as the direct current input anode DC+ of switching tube unit; The second end of second switch pipe (T2) is connected with the first end of the first switching tube (T1), first end is connected with the second end of the 7th switching tube (T7), and the tie point of second switch pipe (T2) and the 7th switching tube (T7) is as the ac output end (AC) of this switching tube unit; The first end of the 7th switching tube (T7) is connected with the second end of the 8th switching tube (T8); The first end of the 8th switching tube (T8) is as the direct current input negative terminal (DC-) of switching tube unit;
The first end of the 3rd switching tube (T3), the second end of the first end of the 4th switching tube (T4) and the 6th switching tube (T6) is connected, the first end of the 3rd switching tube (T3), after the connected tie point of the second end of the first end of the 4th switching tube (T4) and the 6th switching tube (T6), point two articles of branch roads are connected respectively to the anode of the 9th diode (DF1) and the negative electrode of the tenth diode (DF2), the negative electrode of the 9th diode (DF1) is connected to the tie point of the first switching tube (T1) and second switch pipe (T2), anodic bonding to the seven switching tubes (T7) of the tenth diode (DF2) and the tie point of the 8th switching tube (T8), the second end of the 3rd switching tube (T3) is as the first level input (M1) of switching tube unit, the second end of the 4th switching tube (T4) is connected with the second end of the 5th switching tube (T5), the first end of the 5th switching tube (T5) is as the second electrical level input (M2) of switching tube unit, the first end of the 6th switching tube (T6) is as the 3rd level input (M3) of switching tube unit.
2. switching tube as claimed in claim 1 unit, is characterized in that: described switching tube cell operation is in 5 following mode:
H1 mode: first, second, third and fourth switching tube (T1, T2, T3, T4) conducting, other switching tube cut-offs;
H2 mode: second and third, four, seven switching tubes (T2, T3, T4, T7) conducting, the cut-off of other switching tubes;
H3 mode: the second, four, five, seven switching tubes (T2, T4, T5, T7) conducting, other switching tube cut-offs;
H4 mode: the second, five, six, seven switching tubes (T2, T5, T6, T7) conducting, other switching tube cut-offs;
H5 mode: five, six, seven, eight switching tubes (T5, T6, T7, T8) conducting, other switching tube cut-offs.
3. one kind has the inverter of switching tube as claimed in claim 1 or 2 unit, it is characterized in that: described inverter comprises the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), and described switching tube unit;
Described four electric capacity (C1, C2, C3, C4) are connected in parallel on DC power supply two ends after connecting successively;
The direct current input anode of described switching tube unit is linked the positive output end of DC power supply, the direct current input negative terminal of described switching tube unit is linked the negative output terminal of DC power supply, the first level input of switching tube unit is linked described the first electric capacity (C1), the contact of the second electric capacity (C2), the second electrical level input of switching tube unit is connected to described the second electric capacity (C2), the contact of the 3rd electric capacity (C3), the 3rd level input of switching tube unit is connected to described the 3rd electric capacity (C3), the contact of the 4th electric capacity (C4), the ac output end of described switching tube unit is as the first output of this inverter, described the second electric capacity (C2), the contact of the 3rd electric capacity (C3) is as the second output of this inverter.
4. inverter according to claim 3, is characterized in that: between described the first output and the second output, get access to grid or load, described inverter has 5 kinds of operation mode: H1, H2, H3, H4, H5;
H1 mode: first, second, third and fourth switching tube (T1, T2, T3, T4) conducting, other switching tube cut-offs, in the time that the first output flows out electric current, through the first switching tube (T1)-second switch pipe (T2)-electrical network or load-the second electric capacity (C2)-first electric capacity (C1)-first switching tube (T1), in the time that the first output flows to electric current, through the second diode (D2)-first diode (D1)-first electric capacity (C1)-second electric capacity (C2)-electrical network or load-the second diode (D2);
H2 mode: second and third, four, seven switching tube (T2, T3, T4, T7) conducting, other switching tube cut-offs, in the time that the first output flows out electric current, through the 3rd switching tube (T3)-the 9th diode (DF1)-second switch pipe (T2)-electrical network or load-the second electric capacity (C2)-the 3rd switching tube (T3), in the time that the first output flows to electric current, through the 7th switching tube (T7)-the tenth diode (DF2)-the 3rd diode (D3)-second electric capacity (C2)-electrical network or load-seven switching tubes (T7);
H3 mode: the second, four, five, seven switching tube (T2, T4, T5, T7) conducting, other switching tube cut-offs, in the time that the first output flows out electric current, through the 5th diode (D5)-the 4th switching tube (T4)-the 9th diode (DF1)-second switch pipe (T2)-electrical network or load-five diodes (D5), in the time that the first output flows to electric current, through the 7th switching tube (T7)-the tenth diode (DF2)-the 4th diode (D4)-the 5th switching tube (T5)-electrical network or load-seven switching tubes (T7);
H4 mode: the second, five, six, seven switching tube (T2, T5, T6, T7) conducting, in the time that the first output flows out electric current, through the 6th diode (D6)-the 9th diode (DF1)-second switch pipe (T2)-electrical network or load-tri-electric capacity (C3)-the 6th diodes (D6), in the time that the first output flows to electric current, through the 7th switching tube (T7)-the tenth diode (DF2)-the 6th switching tube (T6)-the 3rd electric capacity (C3)-electrical network or load-seven switching tubes (T7);
H5 mode: five, six, seven, eight switching tube (T5, T6, T7, T8) conducting, in the time that the first output flows out electric current, through the 8th diode (D8)-the 7th diode (D7)-electrical network or load-tri-electric capacity (C3)-the 4th electric capacity (C4)-the 8th diodes (D8), in the time that the first output flows to electric current, through the 7th switching tube (T7)-the 8th switching tube (T8)-the 4th electric capacity (C4)-the 3rd electric capacity (C3)-electrical network or load-seven switching tubes (T7).
5. inverter according to claim 3, is characterized in that: described inverter also comprises the filter circuit being connected to after described the first output and the second output.
6. inverter according to claim 5, it is characterized in that: described filter circuit comprises the first inductance (L1), the second inductance (L2) and the 5th electric capacity (C), the first end of described the first inductance (L1) connects described the first output, the second end is as the first output of filter circuit, the first end of described the second inductance (L2) is connected to described the second output, the second end is as the second output of filter circuit, the 5th electric capacity (C) is connected in parallel between the second end of the first inductance (L1) and the second end of the second inductance (L2), between the first output of described filter circuit and the second output, get access to grid or load.
7. one kind has the inverter of switching tube as claimed in claim 1 or 2 unit, it is characterized in that: described inverter comprises the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), and two described switching tube unit;
Described four electric capacity (C1, C2, C3, C4) are connected in parallel on DC power supply two ends after connecting successively;
The direct current input anode (DC+) of two switching tube unit is all connected to the positive output end of described DC power supply, direct current input negative terminal (DC-) is all connected to the negative output terminal of described DC power supply, the first level end (M1) is all connected to the first electric capacity (C1), the contact of the second electric capacity (C2), second electrical level end (M2) is all connected to the second electric capacity (C2), the contact of the 3rd electric capacity (C3), the 3rd level end (M3) is all connected to the 3rd electric capacity (C3), the contact of the 4th electric capacity (C4), ac output end (AC) is all connected to electrical network or load.
8. one kind has the inverter of switching tube as claimed in claim 1 or 2 unit, it is characterized in that: described inverter comprises the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), and three described switching tube unit;
Described four electric capacity (C1, C2, C3, C4) are connected in parallel on DC power supply two ends after connecting successively;
The direct current input anode (DC+) of three described switching tube unit is all connected to the positive output end of described DC power supply, direct current input negative terminal (DC-) is all connected to the negative output terminal of described DC power supply, the first level end (M1) is all connected to the first electric capacity (C1), the contact of the second electric capacity (C2), second electrical level end (M2) is all connected to the second electric capacity (C2), the contact of the 3rd electric capacity (C3), the 3rd level end (M3) is all connected to the 3rd electric capacity (C3), the contact of the 4th electric capacity (C4), ac output end (AC) is all connected to electrical network or load.
9. one kind has the inverter of switching tube as claimed in claim 1 or 2 unit, it is characterized in that: described inverter comprises the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), and four described switching tube unit;
Described four electric capacity (C1, C2, C3, C4) are connected in parallel on DC power supply two ends after connecting successively;
The direct current input anode (DC+) of four described switching tube unit is all connected to the positive output end of described DC power supply, direct current input negative terminal (DC-) is all connected to the negative output terminal of described DC power supply, the first level end (M1) is all connected to the first electric capacity (C1), the contact of the second electric capacity (C2), second electrical level end (M2) is all connected to the second electric capacity (C2), the contact of the 3rd electric capacity (C3), the 3rd level end (M3) is all connected to the 3rd electric capacity (C3), the contact of the 4th electric capacity (C4), ac output end (AC) is all connected to electrical network or load.
10. one kind has the electricity generation system of the inverter as described in claim 3 to 9 any one.
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| CN201210107004.0A CN102710161B (en) | 2012-04-13 | 2012-04-13 | Switching tube unit, inverter and generating system with inverter |
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| CN112769345B (en) * | 2021-01-08 | 2022-04-29 | 桂林电子科技大学 | Multi-level converter with energy capable of flowing bidirectionally |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102064728A (en) * | 2010-10-08 | 2011-05-18 | 山东新风光电子科技发展有限公司 | Five-level circuit topological structure |
| CN202059344U (en) * | 2010-10-08 | 2011-11-30 | 山东新风光电子科技发展有限公司 | Topology of five-level circuit |
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| JP4742229B2 (en) * | 2005-02-08 | 2011-08-10 | 富士電機株式会社 | 5-level inverter and driving method thereof |
| JP5483231B2 (en) * | 2009-03-16 | 2014-05-07 | 国立大学法人東京工業大学 | Voltage uniform circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102064728A (en) * | 2010-10-08 | 2011-05-18 | 山东新风光电子科技发展有限公司 | Five-level circuit topological structure |
| CN202059344U (en) * | 2010-10-08 | 2011-11-30 | 山东新风光电子科技发展有限公司 | Topology of five-level circuit |
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| JP特开2006-223009A 2006.08.24 |
| JP特开2010-220364A 2010.09.30 |
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