CN105871231A - Input-series output-parallel modular AC converter power sharing method - Google Patents
Input-series output-parallel modular AC converter power sharing method Download PDFInfo
- Publication number
- CN105871231A CN105871231A CN201510029628.9A CN201510029628A CN105871231A CN 105871231 A CN105871231 A CN 105871231A CN 201510029628 A CN201510029628 A CN 201510029628A CN 105871231 A CN105871231 A CN 105871231A
- Authority
- CN
- China
- Prior art keywords
- input
- converter
- module
- output
- parallel
- 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
Classifications
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention relates to an input-series output-parallel modular high-frequency AC-DC converter power sharing control method, which belongs to the technical field of power electronics. An output current cross feedback control method is adopted, input voltage of each input module does not need to be sampled, good power sharing between modules can be realized even if module parameters are not consistent, and the system is stabilized. A sub module adopts a resonant soft switching technique, switching loss is further reduced, and the working efficiency of the converter is improved.
Description
Technical field
The present invention relates to electric and electronic technical field application in power system, particularly relate to a kind of input series and output parallel modularity AC converter power-sharing method.
Background technology
Along with the high speed development of modern industry, the high input voltage switching mode converters of different capacity grade has penetrated into the industry-by-industry of national economy.In order to improve the performance of high-tension electricity electronic converter, it is necessary to improve the switching frequency of power supply, and though the pressure height of conventional IGBT, operating frequency is relatively low, therefore typically use MOSFET, but MOSFET pressure voltage is not the highest, finite capacity.So conventional electric power electronics topology receives certain restriction in the application of high pressure occasion.The increase that power electronic devices is pressure is usually associated with the decline of through-current capability and the raising of cost.Due to the restriction of power device, high input voltage power supply can not be designed as conventional topologies, needs the control method using novel topologies novel to realize the change of high input voltage.By input series and output parallel, AC converter block combiner is got up to be applicable to the occasion of high voltage input low-voltage and high-current output type, the voltage-equalizing and power-equalizing control method of this kind of topological structure generally has same duty cycle control, and its shortcoming is that module parameter is inconsistent, cannot realize equal power.The input voltage of each module and the method controlled based on active input voltage needs to sample, this control is more complicated.
Summary of the invention
The present invention is in order to overcome the deficiency of traditional control method, it is proposed that a kind of power-sharing method for modular high frequency AC converter.
The main circuit of described modular high frequency AC converter is as it is shown in figure 1, consisted of the form of input series connection, outfan parallel connection n identical isolated AC converter submodule, and wherein n is 2 or 2 numbers above.As in figure 2 it is shown, each submodule transformer primary side is the full-bridge circuit being made up of the controllable bidirectional pipe of two metal-oxide-semiconductor differential concatenations, Q1a、Q1b、Q2a、Q2b、Q3a、Q3b、Q4a、Q4bDeng for metal-oxide-semiconductor, T is high frequency transformer, and transformer secondary is diode rectification.Full-bridge circuit advanced arm midpoint and lagging leg midpoint are connected to LC resonant type soft-switch, can reduce switching loss further, improve conversion efficiency.
This control method is characterised by using output current cross feedback control, it is not necessary to the input voltage of each input module of sampling, even if also can realize power-sharing good between module when module parameter is inconsistent.V as shown in Figure 3refFor output voltage Setting signal；vofFor output voltage feedback signal； GvoFor voltage regulator
；voutExport for voltage regulator, be also the Setting signal of modules output electric current；if1, if2..., ifnIt is respectively the inductor current feedback signal of corresponding modules；Gi
For current error actuator；xout1, xout2, xout3..., xoutnIt is respectively the modulated signal of each respective modules；K is that dutycycle produces link transmission function, for the inverse of carrier peak value；d1, d2..., dnFor the output duty cycle signal that modules is corresponding.It can be seen that any one current feedback signal in n module, for other modules electric current sums, rather than the electric current of this module.
Accompanying drawing explanation
Fig. 1 is input series and output parallel modularity AC converter structure chart.
Fig. 2 is exchange submodule topological circuit.
Fig. 3 is to connect n module high-frequency ac convertor controls block diagram.
Detailed description of the invention
Fig. 1 is input series and output parallel multimode AC converter structure chart, wherein module 1 to module n is n single identical AC converter module, module 1 to module n is in parallel with respective input capacitance C1 to Cn respectively at input, the outfan of modules is in parallel, constitutes input series and output parallel multimode AC converter system.Control mode uses output current cross feedback control, as it is shown on figure 3, voutExport for voltage regulator, be also the Setting signal of modules output electric current；if1, if2..., ifnIt is respectively the inductor current feedback signal of corresponding modules；Gi
For current error actuator；xout1, xout2, xout3..., xoutnIt is respectively the modulated signal of each respective modules；K is that dutycycle produces link transmission function, for the inverse of carrier peak value；d1, d2..., dnFor the output duty cycle signal that modules is corresponding.It can be seen that any one current feedback signal in n module, for other modules electric current sums, rather than the electric current of this module.Assume that at a time input has a disturbance, so that module 1 input voltage vin1Increase, v i2…vinReduce.At this moment, vin1Increase and will cause if1Increase, vin2Reduce and will cause if2Reduction.Use output current cross feedback control, from controlling loop, d2To reduce, d1To increase, result causes vin1Reduce, vin2Increase.The regulation of loop is controlled, it is suppressed that the interference of voltage on electric capacity by system., so that system reaches poised state again.
Claims (4)
1. an input series and output parallel modularity AC converter power-sharing method, it is characterised in that this transformer configuration is made up of n isolated form high-frequency converter submodule, and input side is cascaded structure, and outlet side is parallel-connection structure.
2. select high-frequency isolation type single stage converter topology according to submodule described in right 1, it is characterized by the full-bridge circuit being made up of the controllable bidirectional pipe of two metal-oxide-semiconductor differential concatenations.
Submodule full-bridge circuit the most according to claim 2, it is characterised in that accessing a series LC network between midpoint and the midpoint of lagging leg of the advanced arm of full-bridge circuit, the position of L and C is interchangeable.
Input series and output parallel modularity AC converter the most according to claim 1 uses output current cross feedback control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510029628.9A CN105871231A (en) | 2015-01-21 | 2015-01-21 | Input-series output-parallel modular AC converter power sharing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510029628.9A CN105871231A (en) | 2015-01-21 | 2015-01-21 | Input-series output-parallel modular AC converter power sharing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105871231A true CN105871231A (en) | 2016-08-17 |
Family
ID=56623031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510029628.9A Pending CN105871231A (en) | 2015-01-21 | 2015-01-21 | Input-series output-parallel modular AC converter power sharing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105871231A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787628A (en) * | 2017-01-12 | 2017-05-31 | 广州金升阳科技有限公司 | The control method of converter interacted system and the control circuit of converter |
| CN109286184A (en) * | 2018-10-29 | 2019-01-29 | 全球能源互联网研究院有限公司 | A kind of equal Poewr control method and device of energy accumulation current converter |
| CN111082685A (en) * | 2018-10-22 | 2020-04-28 | 株式会社东芝 | Power conversion device |
| CN114070091A (en) * | 2021-11-24 | 2022-02-18 | 广东电网有限责任公司广州供电局 | Direct current transformer control method and device based on ISOP-DAB structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030193364A1 (en) * | 2002-04-16 | 2003-10-16 | Liu Kwang H. | Biasing system and method for low voltage DC-DC converters with built-in N-FETs |
| CN102013826A (en) * | 2010-12-01 | 2011-04-13 | 北京理工大学 | Stable current control method for input-series output-parallel high-frequency link inverter module |
| CN202750023U (en) * | 2012-07-31 | 2013-02-20 | 美国跃华国际公司 | Current type single-stage isolation high-frequency switch power supply without alternating current / direct current (AC/DC) rectifier bridge |
-
2015
- 2015-01-21 CN CN201510029628.9A patent/CN105871231A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030193364A1 (en) * | 2002-04-16 | 2003-10-16 | Liu Kwang H. | Biasing system and method for low voltage DC-DC converters with built-in N-FETs |
| CN102013826A (en) * | 2010-12-01 | 2011-04-13 | 北京理工大学 | Stable current control method for input-series output-parallel high-frequency link inverter module |
| CN202750023U (en) * | 2012-07-31 | 2013-02-20 | 美国跃华国际公司 | Current type single-stage isolation high-frequency switch power supply without alternating current / direct current (AC/DC) rectifier bridge |
Non-Patent Citations (1)
| Title |
|---|
| H.IMAN-EINI等: "A Modular AC/DC Rectifier Based on Cascaded H-bridge Rectifier", 《2008 13TH INTERNATIONAL POWER ELECTRONIC AND MOTION CONTROL CONFERENCE》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787628A (en) * | 2017-01-12 | 2017-05-31 | 广州金升阳科技有限公司 | The control method of converter interacted system and the control circuit of converter |
| CN106787628B (en) * | 2017-01-12 | 2019-09-10 | 广州金升阳科技有限公司 | The control method of converter interacted system and the control circuit of converter |
| CN111082685A (en) * | 2018-10-22 | 2020-04-28 | 株式会社东芝 | Power conversion device |
| CN109286184A (en) * | 2018-10-29 | 2019-01-29 | 全球能源互联网研究院有限公司 | A kind of equal Poewr control method and device of energy accumulation current converter |
| CN114070091A (en) * | 2021-11-24 | 2022-02-18 | 广东电网有限责任公司广州供电局 | Direct current transformer control method and device based on ISOP-DAB structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10348202B2 (en) | Modular DC-DC converter including a DC transformer module | |
| CN101814827B (en) | Two-stage type DC converter with high voltage input and low-voltage large current output | |
| CN104506040B (en) | Dual-PWM and phase-shifting control method with the same duty ratio | |
| CN105191097B (en) | Apparatus and method for resonance converter | |
| US20230113753A1 (en) | Dc/dc converter and method for controlling output voltage thereof | |
| CN210380663U (en) | Bidirectional multipath parallel full-bridge LLC resonant converter | |
| CN104702115A (en) | Method of equally dividing power of input-parallel output-parallel modularized DC (Direct Current) converter | |
| CN109450255A (en) | A kind of two-way full-bridge DC/DC converter circuit and the control method for inhibiting bias | |
| CN104201900A (en) | Resonant converter and method for controlling same | |
| CN109842299B (en) | Combined direct current conversion system and control method thereof | |
| CN105576981A (en) | Switching frequency adjusting method based on current cross feedback | |
| CN208767975U (en) | A kind of tandem type flyback converter | |
| CN105871231A (en) | Input-series output-parallel modular AC converter power sharing method | |
| CN106208726B (en) | A kind of voltage-type Quasi-Z-Source AC-AC converters | |
| Cui et al. | Two phase interleaved ISOP connected high step down ratio phase shift full bridge DC/DC converter with GaN FETs | |
| CN106487259B (en) | A kind of neutral point voltage balance method for three Level Full Bridge DC converters | |
| CN109302072B (en) | Series-input multi-port-output resonant DC converter and control method thereof | |
| CN104901550A (en) | Bidirectional full-bridge DC/DC converter based on variable inductor network | |
| Narasimha et al. | An improved closed loop hybrid phase shift controller for dual active bridge converter. | |
| CN204089600U (en) | High voltage bearing Switching Power Supply | |
| CN112865550A (en) | Double-active-bridge converter with input connected in parallel and output connected in series and control method thereof | |
| CN102098842B (en) | Current transformer-based light-emitting diode (LED) driving circuit | |
| CN106787756A (en) | A kind of CL FT CL resonance DC converters | |
| CN204859014U (en) | Device is divided equally to parallelly connected modularization alternating -current converter power of input series connection output | |
| CN102843038A (en) | DC/DC (direct current/direct current) changer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 224000 Career Technical College, Yancheng City, Jiangsu 285 liberation South Road, Career Technical College Applicant after: Yancheng industry Vocationl Technical College Address before: 224000 Career Technical College, Yancheng City, Jiangsu 285 liberation South Road, Career Technical College Applicant before: Yancheng Textile Vocational College |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |
|
| RJ01 | Rejection of invention patent application after publication |