CN101882877A - Asymmetrical cascaded rectification circuit - Google Patents
Asymmetrical cascaded rectification circuit Download PDFInfo
- Publication number
- CN101882877A CN101882877A CN 201010222913 CN201010222913A CN101882877A CN 101882877 A CN101882877 A CN 101882877A CN 201010222913 CN201010222913 CN 201010222913 CN 201010222913 A CN201010222913 A CN 201010222913A CN 101882877 A CN101882877 A CN 101882877A
- Authority
- CN
- China
- Prior art keywords
- cascaded
- asymmetric
- level
- rectification circuit
- phase
- 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.)
- Pending
Links
Images
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
- H02M7/49—Combination of the output voltage waveforms of a plurality of converters
Abstract
The invention provides an asymmetrical cascaded rectification circuit which comprises a three-phase AC power supply and a circuit structure comprising three single-phase asymmetrical cascaded rectification circuits. Each phase circuit comprises an inductor L and two asymmetrical four-level circuits, wherein one end of the inductor L is connected with a corresponding output end of the AC power supply, and each four-level circuit comprises two output loads and two capacitors connected in parallel with the output loads. By using a PWM (Pulse Width Modulation) technology, a plurality of direct currents can be outputted and the power factor at the AC side, harmonic compensation and system reliability can be improved.
Description
Technical field:
The invention belongs to electric and electronic technical field, particularly a kind of asymmetric cascaded rectification circuit.
Background technology:
Along with the range of application of power electronic equipment constantly enlarges, the extensive use of powerful power converter has brought problems such as harmonic pollution, power loss to electric power system.The rectifying device that power electronic equipment is commonly used mostly adopts diode rectifier circuit or Thyristor Controlled rectification circuit at present, because they have injected abundant harmonic wave to electrical network, has caused serious " pollution " of electrical network.The harmonic pollution problem of power electronic equipment becomes one of focal issue of paying close attention in the electrical engineering field.
The PWM rectifier becomes a kind of effective means of current solution electrical network " pollution " problem because of having the advantage of High Power Factor, reactive power compensation.The PWM rectifier can be realized the energy two-way flow on the other hand.Not only can realize by the energy-delivering rectification characteristic of interchange side loading, and can realize, thereby effectively save and utilized the energy by the inversion characteristic of DC side to the AC side feedback energy.Because the various advantages of PWM commutation technique, be widely used in all kinds of power electronic systems, such as the generating electricity by way of merging two or more grid systems of: Static Var Compensator, Active Power Filter-APF, power factor correction, superconducting energy storage, AC/DC motor drive system, solar energy regenerative resource, high voltage direct current transmission and unified trend control etc.
Characteristics such as in recent years, many level Semiconductor Converting Technology is little owing to output waveform distortion, dv/dt is little and the EMI of system is little are subjected to paying close attention to widely.
How overcoming problems such as power grade lifting that powerful power converter exists owing to the restriction that is subjected to transformer or reactor size, efficient, price and reliability, harmonic pollution, is the technology of being pursued in the industry.
Summary of the invention:
Technical problem to be solved by this invention provides a kind of asymmetric cascaded rectification circuit, by pulse modulation technology PWM, can export a plurality of direct currents, and can improve the power factor of AC side, and harmonic compensation has improved the reliability of system simultaneously.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of asymmetric cascaded rectification circuit, comprise a three-phase alternating-current supply, it is characterized in that: comprise a circuit structure that is made of three single-phase asymmetric cascaded rectification circuits, each circuitry phase comprises an inductance L, and an end connects a corresponding output of described AC power; Two asymmetric four level circuits that are connected in series are connected in series with described inductance L; Each four level circuit comprises two output loadings and two electric capacity in parallel with described output loading.
Further, described four level circuits comprise the switching device of four band fly-wheel diodes.
Further, described band fly-wheel diode comprises the electronic device in parallel with diode, and described electronic device is selected from IGBT, IGCT, MOSFET.
A kind of single-phase asymmetric cascaded rectification circuit comprises an AC power, it is characterized in that: comprise an inductance L, an end connects a corresponding output of described AC power; Two asymmetric four level circuits that are connected in series are connected in series with described inductance L; Each four level circuit comprises two output loadings and two electric capacity in parallel with described output loading.
The invention has the beneficial effects as follows provides a kind of asymmetric cascaded rectification circuit, constitute by asymmetric multi-level converter cascade, the present invention is by pulse modulation technology PWM, make this circuit can export a plurality of direct currents, and can improve the power factor between AC side, reduce harmonic wave, improved the reliability of system simultaneously.
Description of drawings:
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is the asymmetric cascaded rectification circuit structure of three-phase;
Fig. 2 is single-phase asymmetric cascaded rectification circuit structure;
Fig. 3 is v
AbVoltage waveform;
Fig. 4 is a grid side voltage and current waveform.
Embodiment:
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth embodiments of the present invention.
The asymmetric cascaded rectification circuit structure of three-phase that the present invention proposes as shown in Figure 1, each circuitry phase is in series by two asymmetric four level circuits.Among the figure, L represents inductance, and R has comprised the resistance on the inductance and the conducting resistance of diode.v
A11, v
A12, v
A21, v
A22, v
B11, v
B12, v
B21, v
B22, v
C11, v
C12, v
C21, and v
C22It is respectively the direct voltage in the output loading.T
A11, T
A12, T
A13, T
A14, T
A21, T
A22, T
A23, T
A24Deng the switching device that is the band fly-wheel diode, can be power electronic device such as IGBT, IGCT, MOSFET.This switching device can be operated in conducting or by state.
The asymmetric cascaded rectification circuit structure of three-phase of the present invention can be passed through the control switch power electronic device, makes to obtain a stable voltage in the output dc terminal, improves the AC side power factor simultaneously, reduces harmonic wave, improves the quality of power supply of AC side.
Fig. 2 is the single-phase asymmetric cascaded rectification circuit structure of amplifying out on the basis of Fig. 1.L represents the AC side inductive current, and R has comprised the resistance on the inductance and the conducting resistance of diode.U1, V1, U2, V2 represent respectively and the voltage on 4 electric capacity of direct current outlet side.
If according to the proportional control of V1: U1: V2: U2=E: E: E: E, a and b terminal voltage v
AbCan present 7 kinds of level.Every kind of level can have 1 to 4 kind of different switching mode respectively, can represent with table 1.Fig. 3 has provided v
AbSimulation waveform, Fig. 4 has provided the simulation waveform of grid side voltage and current.
Table 1 is to present seven kinds of level rectifier state tables
If according to the ratio of different output dc voltages, can hold the alternating voltage waveform that obtains varying level at a and b.
The voltage ratio of exporting when direct current is Vd1: Ud1: Vd2: Ud2=1: in the time of 2: 1: 1, and AC side v
AbCan present 9 kinds of level.+ 4E ,+3E ,+2E ,+E, 0 ,-E ,-2E ,-3E and-4E, totally nine level.
The voltage ratio of exporting when direct current is Vd1: Ud1: Vd2: Ud2=1: in the time of 3: 1: 1, and AC side v
AbBe+5E ,+4E ,+3E ,+2E ,+E, 0 ,-E ,-2E ,-3E ,-4E and-5E, totally ten one level.
When the DC input voitage ratio is Vd1: Ud1: Vd2: Ud2=1: in the time of 4: 1: 1, AC side v
AbBe+6E ,+5E ,+4E ,+3E ,+2E ,+E, 0 ,-E ,-2E ,-3E ,-4E ,-5E and-6E, totally ten three level.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention not only is restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. asymmetric cascaded rectification circuit, comprise a three-phase alternating-current supply, it is characterized in that: comprise a circuit structure that is made of three single-phase asymmetric cascaded rectification circuits, each circuitry phase comprises an inductance L, and an end connects a corresponding output of described AC power; Two asymmetric four level circuits that are connected in series are connected in series with described inductance L; Each four level circuit comprises two output loadings and two electric capacity in parallel with described output loading.
2. a kind of asymmetric cascaded rectification circuit according to claim 1 is characterized in that: described four level circuits comprise the switching device of four band fly-wheel diodes.
3. a kind of asymmetric cascaded rectification circuit according to claim 1 is characterized in that: described band fly-wheel diode comprises the electronic device in parallel with diode, and described electronic device is selected from IGBT, IGCT, MOSFET.
4. a single-phase asymmetric cascaded rectification circuit comprises an AC power, it is characterized in that: comprise an inductance L, an end connects a corresponding output of described AC power; Two asymmetric four level circuits that are connected in series are connected in series with described inductance L; Each four level circuit comprises two output loadings and two electric capacity in parallel with described output loading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010222913 CN101882877A (en) | 2010-07-08 | 2010-07-08 | Asymmetrical cascaded rectification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010222913 CN101882877A (en) | 2010-07-08 | 2010-07-08 | Asymmetrical cascaded rectification circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101882877A true CN101882877A (en) | 2010-11-10 |
Family
ID=43054799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010222913 Pending CN101882877A (en) | 2010-07-08 | 2010-07-08 | Asymmetrical cascaded rectification circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101882877A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857129A (en) * | 2011-06-29 | 2013-01-02 | 艾默生网络能源有限公司 | Rectifier circuit |
| CN104934978A (en) * | 2015-06-30 | 2015-09-23 | 西安理工大学 | Two-phase cascaded active power filter |
| US9716425B2 (en) | 2013-01-21 | 2017-07-25 | Abb Schweiz Ag | Multilevel converter with hybrid full-bridge cells |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3184461B2 (en) * | 1996-08-08 | 2001-07-09 | 株式会社荏原製作所 | DC power supply equipment |
| CN101237192A (en) * | 2008-03-14 | 2008-08-06 | 北京康得环保科技股份有限公司 | Commutation reverse cascaded transducer |
| CN101378227A (en) * | 2008-09-28 | 2009-03-04 | 东南大学 | Power unit for cascade apparatus |
| CN101494425A (en) * | 2009-01-19 | 2009-07-29 | 上海海事大学 | Three-phase mixing multi-level inverter circuit |
-
2010
- 2010-07-08 CN CN 201010222913 patent/CN101882877A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3184461B2 (en) * | 1996-08-08 | 2001-07-09 | 株式会社荏原製作所 | DC power supply equipment |
| CN101237192A (en) * | 2008-03-14 | 2008-08-06 | 北京康得环保科技股份有限公司 | Commutation reverse cascaded transducer |
| CN101378227A (en) * | 2008-09-28 | 2009-03-04 | 东南大学 | Power unit for cascade apparatus |
| CN101494425A (en) * | 2009-01-19 | 2009-07-29 | 上海海事大学 | Three-phase mixing multi-level inverter circuit |
Non-Patent Citations (2)
| Title |
|---|
| 《电工技术学报》 20071226 韩金刚等 一种新型混合级联不对称多电平逆变器 第22卷, 第12期 2 * |
| 《电工技术学报》 20080226 汤天浩等 一种多电平逆变电路新的组合方式 第23卷, 第02期 2 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857129A (en) * | 2011-06-29 | 2013-01-02 | 艾默生网络能源有限公司 | Rectifier circuit |
| CN102857129B (en) * | 2011-06-29 | 2015-10-21 | 艾默生网络能源有限公司 | A kind of rectification circuit |
| US9716425B2 (en) | 2013-01-21 | 2017-07-25 | Abb Schweiz Ag | Multilevel converter with hybrid full-bridge cells |
| CN104934978A (en) * | 2015-06-30 | 2015-09-23 | 西安理工大学 | Two-phase cascaded active power filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Siwakoti et al. | A novel seven-level active neutral-point-clamped converter with reduced active switching devices and DC-link voltage | |
| CN102377324B (en) | Converter bridge arm suitable for high-voltage applications and application system thereof | |
| CN101546964B (en) | Module combined multi-level converter | |
| CN104348376A (en) | Multilevel converter system | |
| CN101494425A (en) | Three-phase mixing multi-level inverter circuit | |
| CN102185480B (en) | Bidirectional isolation direct-current converter | |
| CN104638940A (en) | Modular multi-level power electronic transformer based on cascading | |
| CN104852583A (en) | High-frequency link multi-level direct-current transformer used for middle- low-voltage direct current distribution | |
| CN103715930A (en) | Method for increasing capacity of flexible direct-current power transmission system and apparatus thereof | |
| Rekola et al. | Comparison of line and load converter topologies in a bipolar LVDC distribution | |
| US9780685B2 (en) | Electrical power converter with a converter cell series unit | |
| CN102664546A (en) | Five-level current transformation topological structure with bi-directional power switch and applications thereof | |
| CN203827171U (en) | Driving circuit of power load | |
| Du et al. | Harmonic reduction methods at DC link of series-connected multi-pulse rectifiers: A review | |
| US20160056728A1 (en) | Multilevel converter | |
| CN202586797U (en) | Five-level variable-current topological structure with bidirectional power switches and application thereof | |
| CN108199603B (en) | Multi-winding time-sharing power supply isolation flyback direct current chopper type single-stage multi-input inverter | |
| Zhang et al. | Impact of interleaving on input passive components of paralleled DC-DC converters for high power PV applications | |
| CN103236693B (en) | Unified electric energy quality controller | |
| CN101882877A (en) | Asymmetrical cascaded rectification circuit | |
| CN102568799A (en) | Phase-shift transformer and electric energy transmission device with same | |
| CN102013696A (en) | Transformer free inductance energy-storing topological structure | |
| CN201966811U (en) | Buck power electronics transformer used for network distribution | |
| CN101521468B (en) | High-frequency three-phase medium-voltage power supply rectifier | |
| Li et al. | A novel 36-pulse rectifier with a low loss interphase converter at DC side |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20101110 |