CN204465377U - A kind of and series interleaved formula three Port Translation device - Google Patents
A kind of and series interleaved formula three Port Translation device Download PDFInfo
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- CN204465377U CN204465377U CN201520224656.1U CN201520224656U CN204465377U CN 204465377 U CN204465377 U CN 204465377U CN 201520224656 U CN201520224656 U CN 201520224656U CN 204465377 U CN204465377 U CN 204465377U
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- photovoltaic
- storage capacitor
- bridge
- storage battery
- port translation
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- 239000003990 capacitor Substances 0.000 claims abstract description 33
- 230000015572 biosynthetic process Effects 0.000 claims description 3
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- 230000000295 complement effect Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model relates to one and series interleaved formula three Port Translation device, comprise photovoltaic array, Boost circuit, DC side storage capacitor, storage battery, two half-bridge converters, step-up transformers, wherein two half-bridge converter former limit branch circuit parallel connections, vice-side winding series connection, two complementary conductings of half-bridge switch pipe; Full-bridge converter is equivalent between DC side to electrical network; Between storage battery to electrical network, equivalence becomes crisscross parallel positive and negative laser converter; Photovoltaic is input between storage battery and is equivalent to the two-way Buck/Boost converter of crisscross parallel, by the transmission regulating the duty ratio of two half-bridge converter brachium pontis switching tubes can realize three port energy.The utility model has that topological structure is simple, volume is little, low cost and other advantages, solves conventional half-bridge three Port Translation device photovoltaic side energy and the uppity technological difficulties of battery tension/power, improves system effectiveness.
Description
Technical field
The utility model relates to one and series interleaved formula three Port Translation device, belongs to intelligent micro-grid technical field.
Background technology
Along with socioeconomic development, the demand of the mankind to electric power increases day by day, and day by day increasing the weight of of energy crisis and environmental pollution, facilitate the research of the mankind to generation of electricity by new energy technology.The various advantages that photovoltaic power generation technology has become one of main mode of following generating, and development prospect is huge, becomes the focus of Recent study.In order to realize continuous, the stable power-supplying of micro-capacitance sensor, thus form the three port power systems be made up of photovoltaic energy, energy storage device and load.
The traditional scheme of three port power systems needs to adopt multiple independently two-port converter, and system converter used quantity is many, cause weight and floor space large; And there is multiple power levels conversion, system effectiveness is not high.Three Port Translation devices are class new converter that developed recently is formed, and can be realized power management and the control of photovoltaic energy, storage battery and power distribution network by a converter simultaneously.Its integrated level is high, power density is high, efficiency is high, volume is little, low cost and other advantages becomes study hotspot both domestic and external, and is applied in smart micro-grid system.
Half-bridge three Port Translation device is a class three Port Translation device that is derivative on half-bridge converter basis and that grow up, have topological structure simple, be applicable to the advantages such as middle low power system, but at present there are following technological difficulties in the half-bridge three Port Translation device of structure: the conduction loss of converter is high, switching tube junction capacitance produces due to voltage spikes with transformer leakage inductance resonance, the solution of these problems demand.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of and series interleaved formula three Port Translation device.
The technical solution of the utility model is as follows:
A kind of and series interleaved formula three Port Translation device, described three Port Translation devices comprise photovoltaic array, Boost circuit, DC side storage capacitor, storage battery, two half-bridge converters, step-up transformers; Three ports of described three Port Translation devices are connected with electrical network with photovoltaic input, storage battery respectively: described photovoltaic array is connected with photovoltaic input by Boost circuit, and described DC side storage capacitor comprises dividing potential drop storage capacitor C
1with dividing potential drop storage capacitor C
2, described dividing potential drop storage capacitor C
1with dividing potential drop storage capacitor C
2between photovoltaic input and half-bridge converter, described dividing potential drop storage capacitor C
2in parallel with storage battery, described storage battery is in parallel with half-bridge converter, and described two half-bridge converters are connected with electrical network by step-up transformer.The utility model is by the former limit parallel connection by two half-bridge converters, step-up transformer vice-side winding is connected, under the prerequisite of the complementary conducting of former limit switching tube, introduce the new power variable control that phase shifting control is formed, control with the power realizing load-side, meet the demand for control of three port power systems.
Preferably, described Boost circuit comprises photovoltaic side storage capacitor C
0, Boost boost inductance L
0, diode and IPM module S
0; Described photovoltaic side storage capacitor C
0, Boost boost inductance L
0with IPM module S
0three connects formation current circuit, described IPM module S
0, diode connects with photovoltaic input and forms current circuit, described photovoltaic side storage capacitor C
0in parallel with photovoltaic array.
Preferably, the switching tube of described two half-bridge converters selects model to be the switching tube of FDP2532.
Operation principle of the present utility model: be equivalent to full-bridge converter between photovoltaic input to electrical network; Between storage battery to electrical network, equivalence becomes crisscross parallel positive and negative laser converter, wherein the input of two-way Forward-flyback in parallel, export series connection; Photovoltaic is input between storage battery and is equivalent to the two-way Buck/Boost converter of crisscross parallel; Step-up transformer serves as the effect of filter inductance.Inputted by photovoltaic, in three port power systems that storage battery and electrical network are formed, need the control simultaneously realizing wherein two port voltages or electric current, the 3rd port is then used for balanced power relation.
According to the power constraint relation of photovoltaic energy, electrical network and storage battery, when input source power is greater than grid-connected power, unnecessary power is to charge in batteries, and storage battery is in charge mode, and charging average current equals two transformer magnetizing inductance average current sums; When photovoltaic energy power is less than the grid-connected power that need draft, not enough power is supplemented by storage battery, and storage battery is in discharge mode, and electric discharge average current equals two magnetizing inductance average current sums.Therefore, magnetizing inductance electric current, is also the bias current of Transformer Winding primary current, has just intuitively reacted the charge status of storage battery.
The beneficial effects of the utility model are:
1, three traditional port systems compared by the utility model three Port Translation device needs to adopt multiple independently two-port converter, and this device topological structure is simple, volume is little, cost is low, is applicable to middle low power application.
2, the utility model three Port Translation device can not increase extra power loss, can not produce more serious due to voltage spikes, improve system effectiveness because of leakage inductance resonance.
3, the utility model three Port Translation device solves conventional half-bridge three Port Translation device photovoltaic side energy and the uppity technological difficulties of battery tension/power, decreases the quantity of traditional three Port Translation devices, improves system effectiveness.
Accompanying drawing explanation
Fig. 1 is the utility model and series interleaved formula three Port Translation device is topological.
Fig. 2 is the utility model and series interleaved formula three Port Translation device operation mode waveform.
Wherein: u
g-line voltage; C
0-photovoltaic side storage capacitor; L
0-Boost boost inductance; C
1, C
2-DC side storage capacitor; T
1, T
2-step-up transformer; L
1, L
2-transformer primary side magnetizing inductance; S
0-S
4-IPM module; u
dc-DC voltage; u
b-battery tension; u
d-two series transformer original edge voltages; u
d1-transformer T1 original edge voltage; u
d2-transformer T2 original edge voltage; i
l1, i
l2-two primary side current of transformer; K
1-grid-connected switch.
Embodiment
Also by reference to the accompanying drawings the utility model is described further below by embodiment, but is not limited thereto.
Embodiment 1:
A kind of and series interleaved formula three Port Translation device, described three Port Translation devices comprise photovoltaic array, Boost circuit, DC side storage capacitor, storage battery, two half-bridge converters, step-up transformers; Three ports of described three Port Translation devices are connected with electrical network with photovoltaic input, storage battery respectively: described photovoltaic array is connected with photovoltaic input by Boost circuit, and described DC side storage capacitor comprises dividing potential drop storage capacitor C
1with dividing potential drop storage capacitor C
2, described dividing potential drop storage capacitor C
1with dividing potential drop storage capacitor C
2between photovoltaic input and half-bridge converter, described dividing potential drop storage capacitor C
2in parallel with storage battery, described storage battery is in parallel with half-bridge converter, and described two half-bridge converters are connected with electrical network by step-up transformer.The utility model is by the former limit parallel connection by two half-bridge converters, step-up transformer vice-side winding is connected, under the prerequisite of the complementary conducting of former limit switching tube, introduce the new power variable control that phase shifting control is formed, control with the power realizing load-side, meet the demand for control of three port power systems.
Wherein, described Boost circuit comprises photovoltaic side storage capacitor C
0, Boost boost inductance L
0, diode and IPM module S
0; Described photovoltaic side storage capacitor C
0, Boost boost inductance L
0with IPM module S
0three connects formation current circuit, described IPM module S
0, diode connects with photovoltaic input and forms current circuit, described photovoltaic side storage capacitor C
0in parallel with photovoltaic array.
The switching tube of described two half-bridge converters selects model to be the switching tube of FDP2532.
According to the power constraint relation of photovoltaic energy, electrical network and storage battery, when input source power is greater than grid-connected power, unnecessary power is to charge in batteries, and storage battery is in charge mode, and charging average current equals two transformer magnetizing inductance average current sums; When photovoltaic energy power is less than the grid-connected power that need draft, not enough power is supplemented by storage battery, and storage battery is in discharge mode, and electric discharge average current equals two magnetizing inductance average current sums.Therefore, magnetizing inductance electric current, is also the bias current of Transformer Winding primary current, has just intuitively reacted the charge status of storage battery.
With reference to Fig. 2, for battery charging mode, labor converter is from the operation principle under net pattern.Converter has 4 main switch mode a switch periods, and its key operation waveforms as shown in Figure 2.
A) switching mode 1 [t
a-t
b]: t
abefore moment, S
2, S
4open-minded, S
1, S
3turn off; t
amoment, S
1open, S
2turn off, u
dequal u
dcand u
bdifference, i
llinear increase, transformer primary side winding voltage u
d1and u
d2polarity is contrary, u
dboth end voltage equals input voltage u
dc, input source is to load feed power, and the current status equation of two transformer primary side magnetizing inductances is:
B) switching mode 2 [t
b-t
c]: t
bmoment, S
3open, S
4turn off, u
d1become on the occasion of, u from negative value
d1and u
d2polarity is identical, and amplitude is equal, therefore total winding voltage u
dequal 0, photovoltaic energy passes through inductance L
1and L
2to charge in batteries, the current status equation of two transformer primary side magnetizing inductances is:
C) switching mode 3 [t
c-t
d]: t
cmoment, S
2open, S
1turn off, u
d1from on the occasion of becoming negative value, u
d1and u
d2polarity is contrary, and the total voltage now on transformer primary side winding is-u
dc, photovoltaic energy is by two transformers to load energy feeding, and the current status equation of two transformer primary side magnetizing inductances is:
D) switching mode 4 [t
d-t
e]: t
dmoment, S
4open, S
3turn off, u
d2from on the occasion of becoming negative value, u
d1and u
d2polarity is identical, and amplitude is equal, and the total voltage now on transformer primary side winding is 0, inductance L
1and L
2pass through S
2and S
4afterflow, the current status equation of two transformer primary side magnetizing inductances is:
Suppose that the parameter of two transformers is completely the same, L
1=L
2, switching tube S1 and S
3duty ratio all equal d, the voltage-second balance relation according to transformer magnetizing inductance:
From this formula: the control that just can be realized input source terminal voltage by the duty ratio d of by-pass cock pipe.Input source voltage reference is provided (from net pattern) by Boost circuit maximum power, by the power regulating input voltage to come control inputs source, can realize Battery charge controller.
If under being in grid-connect mode, primary voltage of transformer becomes multiple proportion with grid voltage amplitude, and phase place is identical, by the feeding regulating grid-connected current to realize energy; No matter be in from net pattern or grid-connect mode, photovoltaic energy, by regulating Boost circuit, makes system be in maximum power state.
Claims (3)
1. and a series interleaved formula three Port Translation device, it is characterized in that, described three Port Translation devices comprise photovoltaic array, Boost circuit, DC side storage capacitor, storage battery, two half-bridge converters, step-up transformers; Three ports of described three Port Translation devices are connected with electrical network with photovoltaic input, storage battery respectively: described photovoltaic array is connected with photovoltaic input by Boost circuit, and described DC side storage capacitor comprises dividing potential drop storage capacitor C
1with dividing potential drop storage capacitor C
2, described dividing potential drop storage capacitor C
1with dividing potential drop storage capacitor C
2between photovoltaic input and half-bridge converter, described dividing potential drop storage capacitor C
2in parallel with storage battery, described storage battery is in parallel with half-bridge converter, and described two half-bridge converters are connected with electrical network by step-up transformer.
2. as claimed in claim 1 and series interleaved formula three Port Translation device, it is characterized in that, described Boost circuit comprises photovoltaic side storage capacitor C
0, Boost boost inductance L
0, diode and IPM module S
0; Described photovoltaic side storage capacitor C
0, Boost boost inductance L
0with IPM module S
0three connects formation current circuit, described IPM module S
0, diode connects with photovoltaic input and forms current circuit, described photovoltaic side storage capacitor C
0in parallel with photovoltaic array.
3. as claimed in claim 1 or 2 and series interleaved formula three Port Translation device, is characterized in that, the switching tube of described two half-bridge converters selects model to be the switching tube of FDP2532.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224656.1U CN204465377U (en) | 2015-04-14 | 2015-04-14 | A kind of and series interleaved formula three Port Translation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224656.1U CN204465377U (en) | 2015-04-14 | 2015-04-14 | A kind of and series interleaved formula three Port Translation device |
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| Publication Number | Publication Date |
|---|---|
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|---|---|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086795A (en) * | 2017-06-21 | 2017-08-22 | 佛山科学技术学院 | A kind of Boost type hands over direct converter topology |
| CN107681895A (en) * | 2017-09-07 | 2018-02-09 | 国网北京市电力公司 | Combined type booster converter and its parameter determination method |
| CN110622405B (en) * | 2017-05-19 | 2021-07-06 | 三菱电机株式会社 | Power conversion device |
| CN114944764A (en) * | 2022-06-15 | 2022-08-26 | 西安交通大学 | Isolated three-port AC-DC converter topology |
-
2015
- 2015-04-14 CN CN201520224656.1U patent/CN204465377U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110622405B (en) * | 2017-05-19 | 2021-07-06 | 三菱电机株式会社 | Power conversion device |
| CN107086795A (en) * | 2017-06-21 | 2017-08-22 | 佛山科学技术学院 | A kind of Boost type hands over direct converter topology |
| CN107086795B (en) * | 2017-06-21 | 2023-08-08 | 佛山科学技术学院 | Boost type AC-AC direct converter topology |
| CN107681895A (en) * | 2017-09-07 | 2018-02-09 | 国网北京市电力公司 | Combined type booster converter and its parameter determination method |
| CN114944764A (en) * | 2022-06-15 | 2022-08-26 | 西安交通大学 | Isolated three-port AC-DC converter topology |
| CN114944764B (en) * | 2022-06-15 | 2024-04-12 | 西安交通大学 | Isolated three-port AC/DC converter topology |
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|---|---|---|---|
| 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: 20150708 Termination date: 20160414 |
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| CF01 | Termination of patent right due to non-payment of annual fee |