CN203942465U - H bridge module units in series combination single-phase high voltage converter - Google Patents
H bridge module units in series combination single-phase high voltage converter Download PDFInfo
- Publication number
- CN203942465U CN203942465U CN201320856447.XU CN201320856447U CN203942465U CN 203942465 U CN203942465 U CN 203942465U CN 201320856447 U CN201320856447 U CN 201320856447U CN 203942465 U CN203942465 U CN 203942465U
- Authority
- CN
- China
- Prior art keywords
- bridge module
- phase
- brachium pontis
- module unit
- high voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
-
- 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
- H02M7/493—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 the static converters being arranged for operation in parallel
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The utility model provides H bridge module units in series combination single-phase high voltage converter, it comprises 2N H bridge module unit and 4 brachium pontis inductance, by 4, the power switch component with fly-wheel diode and 1 DC capacitor form in each H bridge module unit, every phase power switch unit is connected successively by 2 power switch component both positive and negative polarities, and series connection mid point and negative pole are output.The positive pole of the upper power switch component of two-phase power switch unit is connected, choose that wherein a phase power switch unit is in parallel with DC capacitor, the positive pole of wherein going up power switch component is connected with DC capacitor is anodal, and the negative pole of lower power switch unit is connected with DC capacitor negative pole.Phase brachium pontis with DC capacitor in converter is exportable 0, ± E, ± 2E ... ± NE level, the not exportable 0, ± NE level of the phase brachium pontis with DC capacitor, adopt multi-level control strategies, single phase alternating current (A.C.) output voltage will present sinusoidal voltage with multiple levels, reduce harmonic wave.
Description
Technical field
The utility model belongs to converters or high voltage applications field, relates to H bridge module units in series combination single-phase high voltage converter.
Background technology
Single-phase high voltage converter, in many industrial occasions extensive uses, conducts in-depth research single-phase high voltage converter in recent decades in the world, has proposed numerous significant high pressure topologys.The topological technology of main structure comprises: 1, the direct serial connection technology of device for power switching, its advantage is directly to apply existing topology, shortcoming is that each power switching device series exists Static and dynamic voltage-sharing, to device for power switching to turn on and off coherence request higher, be easy to occur device fault; 2, multiple technology, its advantage is by the coupling of many windings Industrial Frequency Transformer, realizes high voltage, low harmonic wave, and shortcoming is to use power frequency multi winding transformer, and cost, loss, complexity increase, and have DC magnetization phenomenon; 3, multilevel converter, its advantage is that DC side adopts series direct current electric capacity to realize device for power switching all to press, shortcoming is that the On current load of device for power switching is inconsistent, cause the imbalance of direct voltage on each DC capacitor, and topology is more complicated; 4, module combination multi-level converter is MMC converter; its advantage is; be followed in series to form by multiple identical modular power units and two brachium pontis inductance; realize high modularization; having more obvious advantage at aspects such as device current stress, unbalanced operation, error protections than general multilevel converter, is that current high voltage electric energy converts first-selected converter.
In addition, general single-phase high voltage converter, cannot realize multilevel preferably, conventionally adopts PWM to control, and require power device to be operated in high frequency state, and switching loss is larger.
The utility model, on MMC converter basis, proposes the combination single-phase high voltage converter that a kind of degree of modularity is higher.The converter the utility model proposes has following different from MMC converter: 1, modular power unit difference, and MMC converter using uniphase mode blocking power cell, the utility model is to adopt H bridge-type modular power unit; 2, compound mode difference, MMC converter is recombinant after the combination of every phase module power unit cascade, and the utility model to be modular power unit series connection once combined; 3, can control separately the level of single-phase brachium pontis, realize many level of output sine wave, harmonic wave is less, and compared with PWM control technology, switching loss is little, efficiency is high.Thereby the utility model compares with MMC converter, there is following significant advantage: 1, reduced components and parts; 2, reduced modular power unit number; 3, combination is simple; 4, single brachium pontis multilevel, harmonic wave is little; 5, reliability is high; 6, cost declines.
Utility model content
The utility model proposes a kind of H bridge module units in series combination single-phase high voltage converter, with the comparison of existing single-phase high voltage converter, the degree of modularity is higher, has reduced components and parts, has reduced power cell number, combination is simple, can single brachium pontis multilevel, harmonic wave is little, and reliability is higher, and cost declines, and in high pressure commercial Application, holds out broad prospects.
A kind of H bridge module units in series combination single-phase high voltage converter, it comprises 2N H bridge module unit and 4 brachium pontis inductance, wherein corresponding and one end 2 brachium pontis inductance are in series again after by N H bridge module units in series for the upper brachium pontis of single-phase high voltage converter, lower brachium pontis is followed in series to form by one end and N the H bridge module unit of other 2 brachium pontis inductance, then on single-phase high voltage converter, the other end of 2 brachium pontis inductance in brachium pontis is connected with the other end of 2 brachium pontis inductance in lower brachium pontis, 2 brachium pontis inductance in upper brachium pontis and 2 tie points between 2 brachium pontis inductance in lower brachium pontis form the ac output end of corresponding phase brachium pontis, N is positive integer.
Further, by 4, the power switch component with fly-wheel diode and 1 DC capacitor form in described H bridge module unit.
Further, in described H bridge module unit, every 2 power switch components 1 phase power switch unit in series, 4 power switch components form 2 phases altogether, be a phase and b phase, wherein every 1 all each self-contained the first switching tube and second switch pipe mutually, the positive pole of the first switching tube is received A end, and negative pole is received B end; The positive pole of second switch pipe is received B end, and negative pole is received C end, and wherein B end, C end are output.Select the A end of a phase to receive the positive pole of DC capacitor, the negative pole that C end is received DC capacitor, then the A of a phase and b phase end is connected, the voltage E=V/2N on DC capacitor, and V is input direct voltage.
Further, in described H bridge module unit, every phase power switch unit comprises 4 kinds of operating states, and the first state is the first switching tube conducting, and other device all turn-offs; The second state is the first fly-wheel diode conducting, and other device all turn-offs; The third state is the conducting of second switch pipe, and other device all turn-offs; The 4th kind of state is the second fly-wheel diode conducting, and other device all turn-offs.
Further, the upper brachium pontis of single-phase high voltage converter is followed in series to form by N H bridge module unit and brachium pontis inductance, the B end a of first every phase in H bridge module unit
+, b
+end is connected with the positive pole of power supply, and the B end of first every phase in H bridge module unit is U
a1, U
b1be connected with the positive pole of power supply, the C end of first every phase in H bridge module unit and the U of second H bridge module unit
a2, U
b2be connected, rule according to this, the B end of i H bridge module unit is U
ai, U
bibe connected respectively to the C end of i-1 the every phase in H bridge module unit, the B end that the C end of i the every phase in H bridge module unit is connected respectively to i+1 H bridge module unit is U
a (i+1), U
b (i+1), after N H bridge module unit connects, the C end of N the every phase in H bridge module unit is connected with the first inductance and the second inductance respectively.
Further, the lower brachium pontis of single-phase high voltage converter is followed in series to form by brachium pontis inductance and N H bridge module unit, and the 3rd inductance and the 4th inductance are U with the B end of N+1 the every phase in H bridge module unit respectively
a (N+1), U
b (N+1)be connected, the C end of N+1 the every phase in H bridge module unit is U with the B end of N+2 the every phase in H bridge module unit
a (N+2), U
b (N+2)be connected, rule successively, after the N of the lower brachium pontis of single-phase high voltage converter H bridge module unit connects, the C end of 2N the every phase in H bridge module unit is a
-, b
-end is connected to the negative pole of power supply.
Further, in described single-phase high voltage converter, with the phase brachium pontis of DC capacitor be that a is mutually exportable 0, ± E, ± 2E ... a, ± NE level, be not or not b is mutually exportable 0, ± NE level with the phase brachium pontis of DC capacitor, by controlling single brachium pontis output level, obtaining single phase alternating current (A.C.) output voltage is sinusoidal many level.
The converter the utility model proposes has following different from MMC converter: 1, modular power unit difference, and MMC converter using uniphase mode blocking power cell, the utility model is to adopt H bridge-type modular power unit; 2, compound mode difference, MMC converter is recombinant after the combination of every phase module power unit cascade, and the utility model to be modular power unit series connection once combined; 3, can pass through the control of a brachium pontis level, realize many level of output sine wave, harmonic wave is less, and compared with PWM control technology, switching loss is little, efficiency is high.Thereby the utility model compares with MMC converter, there is following significant advantage: 1, reduced components and parts; 2, reduced modular power unit number; 3, combination is simple; 4, single brachium pontis multilevel, harmonic wave is little; 5, reliability is high; 6, cost declines.
Brief description of the drawings
Fig. 1 is the H bridge module unit that forms single-phase high voltage converter.
Fig. 2 is H bridge module units in series combination single-phase high voltage inverter main circuit of the present utility model.
Fig. 3 is the H bridge-type modular unit tandem compound single-phase high voltage converter with 2N=4 module.
Fig. 4 is many level of one output waveform with the H bridge-type modular unit tandem compound single-phase high voltage converter of 2N=4 module.
Embodiment
Below in conjunction with accompanying drawing, concrete enforcement of the present utility model is further described.
Shown in Fig. 1 is the utility model H bridge-type modular unit, and H bridge module unit comprises 4 power switch component and 1 DC capacitors with fly-wheel diode and forms.Every 2 power switch components 1 phase power switch unit in series, 4 power switch components form 2 phases altogether, i.e. a phase and b phase, wherein every 1 equal each self-contained the first switch transistor T mutually
1with second switch pipe T
2, the first switch transistor T
1positive pole receive A end, negative pole is received B end; Second switch pipe T
2positive pole receive B end, negative pole is received C end, wherein B end, C end are output.Select the A end of a phase to receive DC capacitor C
epositive pole, C end receive DC capacitor C
enegative pole, then the A of a phase and b phase end is connected, DC capacitor C
eon voltage E=V/2N, the magnitude of voltage that V is input DC power.
H bridge module units in series combination single-phase high voltage converter constituted mode shown in Fig. 2 is as follows: 1, upper brachium pontis is followed in series to form by N H bridge module unit and brachium pontis inductance, first H bridge module unit M
1the B end a of every phase
+, b
+end is connected with the positive pole of power supply V, first H bridge module unit M
1the B end of every phase is U
a1, U
b1be connected with the positive pole of power supply V, first H bridge module unit M
1c end and second H bridge module unit M of every phase
2u
a2, U
b2be connected, rule according to this, i H bridge module unit M
ib end be U
ai, U
bibe connected respectively to i-1 H bridge module unit M
i-1the C end of every phase, i H bridge module unit M
ithe C end of every phase is connected respectively to i+1 H bridge module unit M
i+1b end be U
a (i+1), U
b (i+1), after N H bridge module unit connects, N H bridge module unit M
nthe C end of every phase respectively with the first inductance L
apwith the second inductance L
bpconnect.2, lower brachium pontis is followed in series to form by brachium pontis inductance and N H bridge module unit, the 3rd inductance L
anwith the 4th inductance L
bnrespectively with N+1 H bridge module unit M
n+1the B end of every phase is U
a (N+1), U
b (N+1)be connected, N+1 H bridge module unit M
n+1c end and N+2 the H bridge module unit M of every phase
n+2the B end of every phase is U
a (N+2), U
b (N+2)be connected, rule successively, after the N of the lower brachium pontis of single-phase high voltage converter H bridge module unit connects, 2N H bridge module unit M
2Nthe C end of every phase is a
-, b
-end is connected to the negative pole of power supply V.3, the upper and lower bridge arm of two-phase brachium pontis is connected at a, b point place, then draw respectively and be connected to load.
Fig. 3 is a H bridge module units in series combination single-phase high voltage converter with 2N=4 module, and it is by 4 H bridge module unit M
1, M
2, M
3, M
4and 4 brachium pontis inductance formations, wherein the inductance value of 4 brachium pontis inductance is identical, is L.
Fig. 4 is the output waveform having under wherein a kind of multilevel mode of H bridge module units in series combination single-phase high voltage converter of 2N=4 module, and as seen from the figure, a end output level is 0, ± E, ± 2E, and b end output level is ± 2E, output voltage V
abfor many level output.
Claims (6)
1. a H bridge module units in series combination single-phase high voltage converter, it is characterized in that, comprise 2N H bridge module unit and 4 brachium pontis inductance, wherein corresponding and one end 2 brachium pontis inductance are in series again after by N H bridge module units in series for the upper brachium pontis of single-phase high voltage converter, lower brachium pontis is followed in series to form by one end and N the H bridge module unit of other 2 brachium pontis inductance, then on single-phase high voltage converter, the other end of 2 brachium pontis inductance in brachium pontis is connected with the other end of 2 brachium pontis inductance in lower brachium pontis, 2 brachium pontis inductance in upper brachium pontis and 2 tie points between 2 brachium pontis inductance in lower brachium pontis form the ac output end of corresponding phase brachium pontis, N is positive integer.
2. H bridge module units in series combination single-phase high voltage converter according to claim 1, is characterized in that, by 4, the power switch component with fly-wheel diode and 1 DC capacitor form in described H bridge module unit.
3. a kind of H bridge module units in series combines single-phase high voltage converter according to claim 2, it is characterized in that, in described H bridge module unit, every 2 power switch components 1 phase power switch unit in series, 4 power switch components form 2 phases altogether, be a phase and b phase, wherein every 1 equal each self-contained the first switching tube (T mutually
1) and second switch pipe (T
2), the first switching tube (T
1) positive pole receive A end, negative pole is received B end; Second switch pipe (T
2) positive pole receive B end, negative pole is received C end, wherein B end, C end are output; Select the A end of a phase to receive DC capacitor (C
e) positive pole, C end receive DC capacitor (C
e) negative pole, then the A of a phase and b phase end is connected, DC capacitor (C
e) on voltage E=V/2N, the magnitude of voltage that V is input DC power.
4. H bridge module units in series combines single-phase high voltage converter according to claim 1, it is characterized in that, in H bridge module unit, every phase power switch unit has 4 kinds of operating states, and the first state is the first switching tube (T
1) conducting, other device all turn-offs; The second state is the first fly-wheel diode (D
1) conducting, other device all turn-offs; The third state is second switch pipe (T
2) conducting, other device all turn-offs; The 4th kind of state is the second fly-wheel diode (D
2) conducting, other device all turn-offs.
5. H bridge module units in series combines single-phase high voltage converter according to claim 3, it is characterized in that, the upper brachium pontis of single-phase high voltage converter is followed in series to form by N H bridge module unit and brachium pontis inductance, first H bridge module unit (M
1) the B end a of every phase
+, b
+end is connected with the positive pole of power supply (V), first H bridge module unit (M
1) the B end of every phase is U
a1, U
b1be connected with the positive pole of power supply (V), first H bridge module unit (M
1) C end and second H bridge module unit (M of every phase
2) U
a2, U
b2be connected, rule according to this, i H bridge module unit (M
i) B end be U
ai, U
bibe connected respectively to i-1 H bridge module unit (M
i-1) the C end of every phase, i H bridge module unit (M
i) the C end of every phase is connected respectively to i+1 H bridge module unit (M
i+1) B end be U
a (i+1), U
b (i+1), after N H bridge module unit connects, N H bridge module unit (M
n) every phase C end respectively with the first inductance (L
ap) and the second inductance (L
bp) connect.
6. H bridge module units in series combines single-phase high voltage converter according to claim 3, it is characterized in that, the lower brachium pontis of single-phase high voltage converter is followed in series to form by brachium pontis inductance and N H bridge module unit, the 3rd inductance (L
an) and the 4th inductance (L
bn) respectively with N+1 H bridge module unit (M
n+1) the B end of every phase is U
a (N+1), U
b (N+1)be connected, N+1 H bridge module unit (M
n+1) C end and N+2 the H bridge module unit (M of every phase
n+2) the B end of every phase is U
a (N+2), U
b (N+2)be connected, rule successively, after the N of the lower brachium pontis of single-phase high voltage converter H bridge module unit connects, 2N H bridge module unit (M
2N) the C end of every phase is a
-, b
-end is connected to the negative pole of power supply (V).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320856447.XU CN203942465U (en) | 2013-12-21 | 2013-12-21 | H bridge module units in series combination single-phase high voltage converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320856447.XU CN203942465U (en) | 2013-12-21 | 2013-12-21 | H bridge module units in series combination single-phase high voltage converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203942465U true CN203942465U (en) | 2014-11-12 |
Family
ID=51861750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320856447.XU Expired - Fee Related CN203942465U (en) | 2013-12-21 | 2013-12-21 | H bridge module units in series combination single-phase high voltage converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203942465U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701349A (en) * | 2013-12-21 | 2014-04-02 | 华南理工大学 | H-bridge modular unit series combination single-phase high-voltage transformer and multi-level control method |
-
2013
- 2013-12-21 CN CN201320856447.XU patent/CN203942465U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701349A (en) * | 2013-12-21 | 2014-04-02 | 华南理工大学 | H-bridge modular unit series combination single-phase high-voltage transformer and multi-level control method |
| CN103701349B (en) * | 2013-12-21 | 2017-04-12 | 华南理工大学 | H-bridge modular unit series combination single-phase high-voltage transformer and multi-level control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103001573B (en) | Medium voltage converter drive system | |
| CN101944839B (en) | Single-phase five-level power inverter | |
| CN102651622B (en) | Full-bridge no-dead-zone sinusoidal pulse width modulation (SPWM) control method | |
| CN109149986B (en) | Three-level-like hybrid modular multilevel converter and control method thereof | |
| CN102332839A (en) | Cascade type time-interval variable-order multi-level static converter | |
| CN103036397B (en) | Single-level single-phase large-step-up-ratio cascade connection voltage type convertor of quasi impedance source | |
| CN101895223A (en) | Double-Cuk buck-boost output parallel-type converter | |
| CN104638940A (en) | Modular multi-level power electronic transformer based on cascading | |
| CN103280994A (en) | High-power cascaded multi-level bridgeless current transformer | |
| CN105897017B (en) | Three-phase line voltage cascades VIENNA converter | |
| CN103051219A (en) | Cascaded converter based on single-level power converting module | |
| CN102946209A (en) | Single-stage three-phase large step-up ratio series voltage type quasi-impedance source inverter | |
| CN104934995A (en) | UPQC with uninterrupted power source function | |
| CN102170244A (en) | Cascaded multi-level current transformer of shared power supply | |
| CN103825483A (en) | SiC power switch device and silicon IGBT mixed type single-phase high-voltage converter | |
| CN104135164A (en) | Interleaved parallel multi-level electronic power transformer | |
| CN103036398A (en) | Single-level single-phase large-step-up-ratio cascade connection voltage type convertor of quasi impedance source | |
| CN202818141U (en) | Inverter power supply suitable for low voltage battery power supply | |
| CN203942465U (en) | H bridge module units in series combination single-phase high voltage converter | |
| CN203872078U (en) | N-output single-phase N+1 switch group MMC inverter | |
| CN203377805U (en) | Diode neutral-point-clamped three-level converter | |
| CN203722509U (en) | Sic high-voltage switch and silicon IGBT hybrid type three-phase four-wire high-voltage converter | |
| CN203645572U (en) | Combined high voltage convertor with H bridge type three-phase module units connected in series | |
| CN204376745U (en) | Three-phase bridge modular unit tandem compound high tension transformer | |
| CN204376728U (en) | A kind of three level four-quadrant low voltage frequency converter circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20171221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |