CN203761117U - Multiport non-isolated two-way DC conversion topological circuit with soft switch - Google Patents
Multiport non-isolated two-way DC conversion topological circuit with soft switch Download PDFInfo
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- CN203761117U CN203761117U CN201420070201.4U CN201420070201U CN203761117U CN 203761117 U CN203761117 U CN 203761117U CN 201420070201 U CN201420070201 U CN 201420070201U CN 203761117 U CN203761117 U CN 203761117U
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- energy
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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
- 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
-
- 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
Abstract
The utility model discloses a multiport non-isolated two-way DC conversion topological circuit with a soft switch. The circuit comprises three branches of a storage battery energy storage system, a super capacitor energy storage system and a photovoltaic power generation system. Output of the storage battery energy storage system, the super capacitor energy storage system and the photovoltaic power generation system is a DC bus which is connected with a DC load and connected with an AC load via a DC/AC converter. Voltage of the DC bus is stabilized by adopting a multiport non-isolated two-way DC/DC converter circuit. The multiport converter circuit is externally connected with a photovoltaic panel, a storage battery, etc. so that a light-storage-super composite energy management system is formed. Under a reasonable energy management strategy, uninterrupted power supply work under all-weather and complex climate conditions can be realized. A BOOST-ZVT technology is introduced so that safety and reliability of a power tube are enhanced and whole machine efficiency is substantially enhanced.
Description
Technical field
The utility model belongs to the electric power energy storage technology field of photovoltaic-storage battery-ultracapacitor compound energy, is specifically related to the non-isolation bidirectional, dc of a kind of multiport with soft switch transformation topology circuit.
Background technology
For military enterprises such as the mechanisms such as data center, Production line, hospital and national defence, Aero-Space science and technology, the deteriorated meeting of the quality of power supply causes huge loss.In recent years, experts and scholars have given very big concern to electric power energy storage technology both at home and abroad, and electric power conversion is widely used in above-mentioned field with memory technology.Practical electric power energy storage technology mainly contains batteries to store energy, ultracapacitor energy storage etc., power density and energy density are to evaluate two important performance indexes of energy-storage system characteristic, wherein battery capacity is large, technology maturation stable, but the speed that discharges and recharges is slow, useful life is short, super capacitor is as a kind of emerging energy-storage travelling wave tube, its performance is between storage battery and electrostatic condenser, there is power density large, have extended cycle life, efficiency for charge-discharge high, the two brings out the best in each other and has made up inferior position separately.21 century, energy crisis was also in domestic electricity price, to be in harmonious proportion that to cause the pushing hands of large-area power outage, the only way out be to change at present taking fossil energy as main energy resource structure, and therefore solar energy power generating is one of utilization of new energy resources mode of tool potentiality.For addressing the above problem, adopt the compound energy system power supply research in multiple kinds of energy source to become one of the focus of concern and focus at home and abroad.
The circuit topology of compound energy system roughly has several at present: 1. photovoltaic generating system connects storage battery or ultracapacitor by charge-discharge circuit, realize round-the-clock uninterrupted power supply, but the shortcoming of this method is only utilized single energy storage technology, discharges and recharges flexibility poor.2. in ultracapacitor and accumulator hybrid energy-storing, only ultracapacitor is hung over to storage battery front end, advantage is to have both rapidity and the capacity of discharging and recharging, and weak point is energy management strategy imperfection, does not utilize photovoltaic new forms of energy; Super capacitor connects two-way BUCK-BOOST converter, and storage battery is directly done inverter input, and advantage is; Adopt interleaving technique, improve inverter power density, shortcoming obviously reduces service lifetime of accumulator.3. light-hold-onlap and close energy conservation structure, shortcoming is not utilize the charge characteristic of storage battery.
Utility model content
The purpose of this utility model is to provide the non-isolation bidirectional, dc of a kind of multiport with soft switch transformation topology circuit, has solved that the existing energy-storage system energy is single, the incomplete problem of energy management.
The technical scheme that the utility model adopts is, the non-isolation bidirectional, dc of a kind of multiport with soft switch transformation topology circuit, comprise energy-storage system of accumulator, super capacitor energy storage system and three branch roads of photovoltaic generating system, the output of energy-storage system of accumulator, super capacitor energy storage system and photovoltaic generating system is DC bus, DC bus is connected with DC load on the one hand, is connected on the other hand by DC/AC converter with AC load.
Feature of the present utility model is also,
Energy-storage system of accumulator wherein comprises the storage battery and the first two-way DC/DC converter that are connected.
Super capacitor energy storage system wherein comprises the ultracapacitor and the second two-way DC/DC converter that are connected.
Photovoltaic generating system wherein comprises the solar panel and the DC/DC converter that are connected.
The beneficial effects of the utility model are:
1. the compound energy energy-storage system of the two-way DC/DC converter of the non-isolation of multiport composition, realizes the object of stable DC busbar voltage; 2. the good characteristic of super capacitor and storage battery complementation, gives full play to super capacitor power advantage, make up the life of storage battery short, discharge and recharge the deficiencies such as slow, storage battery is protected; 3. this circuit, as composition light-surpass-the hold core of compound energy system, due to introducing photovoltaic generating system, can charge to storage battery and ultracapacitor, and meet system normal switch loss etc.; 4. add BOOST-ZVT, it can significantly reduce the power consumption of main switch.
Brief description of the drawings
Fig. 1 is the utility model system block diagram;
Fig. 2 is the utility model circuit topology;
Fig. 3 is two-way BUCK/BOOST-ZVT schematic diagram;
Fig. 4 is BOOST switching sequence figure and supervisor's both end voltage oscillogram;
Fig. 5 is energy management ideograph, wherein, (a) is fine day pattern, is (b) cloudy weather pattern, is (c) cloudy day and Night, (d) is continuous rainfall day mode.
In figure, 1. energy-storage system of accumulator, 2. super capacitor energy storage system, 3. photovoltaic generating system, 4. storage battery, 5. the first two-way DC/DC converter, 6. solar panel, 7.DC/DC converter, 8. ultracapacitor, 9. the second two-way DC/DC converter, 10. DC bus, 11. DC load, 12.DC/AC converter, 13. AC load.
Embodiment
The structure of the non-isolation bidirectional, dc of the multiport transformation topology circuit of the soft switch of the utility model band, as shown in Figure 1, comprises energy-storage system of accumulator 1, super capacitor energy storage system 2 and 3 three branch roads of photovoltaic generating system.Composition and the operation principle of system are as follows:
Energy-storage system of accumulator 1, is connected in series and is formed by 12V/38Ah lead acid accumulator 4, afterwards through the first two-way DC/DC converter 5, maintains the stable of DC bus-bar voltage.The first two-way DC/DC converter 5 can work in respectively BUCK pattern and BOOST pattern, and in the time that branch road is operated in BUCK pattern, storage battery 4 charges; In the time being operated in BOOST pattern, storage battery 4 discharges and powers to DC bus 10.
Super capacitor energy storage system 2, need to select suitable ultracapacitor 8 numbers according to user, carries out connection in series-parallel connection.When this branch road is operated in BUCK pattern, charge to ultracapacitor 8; While being operated in BOOST pattern, ultracapacitor 8 is powered to DC bus 10 by the second two-way DC/DC converter 9.
Photovoltaic generating system 3 is made up of solar panel 6 and DC/DC converter 7, and DC/DC converter 7 is realized MPPT maximum power point tracking control (MPPT).
DC bus 10 can directly be powered to DC load 13; Also can pass through DC/AC inverter 12, direct current is converted to the sinusoidal voltage of frequency stabilization, power to AC load 13.The output of energy-storage system of accumulator 1, super capacitor energy storage system 2 and photovoltaic generating system 3 is DC bus 10, and DC bus 10 connects DC load 11 backward.The output of DC/AC converter 12 is exactly frequency stabilization sinusoidal voltage.
Fig. 2 is the topology of multiport converter circuit, all accesses ZVT resonant network at the BOOST switching tube two ends of energy-storage system of accumulator 1, super capacitor energy storage system 2 and photovoltaic generating system 3, effectively improves circuit reliability and efficiency.
Fig. 3 adds the two-way DC/DC converter principle figure of soft switch.
Fig. 4 is driving and the main tube end voltage oscillogram of major-minor power tube, and in analysis chart, switch mode is as follows: switch mode 1:
T
0before, S
2, S
3all turn-off U
bat, inductance L passes through D
1jointly to U
dccharging, and provide energy to load;
Switch mode 2:
T
0moment, auxiliary switch S
3conducting, L
rabsorb energy, through S
3get back to U
batnegative pole, U
bat, inductance L passes through D
1continue to U
dccharging, now L
rwith S
2internal junction electric capacity generation resonance, S
2anti-paralleled diode conducting makes L
rterminal voltage reduces to zero, i.e. S
2voltage is zero;
Switch mode 3:
T
1moment S
2conducting, at this stage U
batto inductance L charging, U
dcpower to the load, the no-voltage that realizes switch is open-minded;
Switch mode 4:
T
2in the moment, turn-off S
3, C
rvoltage clamping is to U
dc, L
ron energy pass through D
4with C
rform loop, release energy;
Switch mode 5:
At t
3moment is turn-offed S
2, repeat said process, thereby realize the ZVS of two-way DC/DC circuit under BOOST pattern.
Fig. 5 is several main power path models of compound energy energy-storage system.(a) working method shown in often comes across sunny weather, and photovoltaic system is powered to DC load by BOOST circuit, and excess energy is charged to storage battery and ultracapacitor through two-way DC/DC converter.(b) often work in cloudy weather, photovoltaic panel and ultracapacitor power to the load jointly, and excess energy is stored in storage battery.(c) this pattern mostly is cloudy day or night, and photovoltaic system is not worked, and ultracapacitor powers to the load, and to charge in batteries; (d) work in continuous rainfall weather, ultracapacitor discharges completely, and system only has storage battery powering load.
The non-isolation bidirectional, dc of the multiport transformation topology circuit of the soft switch of the utility model band, completes following functions: 1. stable DC busbar voltage; 2. realizing storage battery and ultracapacitor is that power-type and capacity type energy-accumulating medium are had complementary advantages, increasing storage battery service life; 3. introduce photovoltaic generating system and form compound energy energy-storage system, have the characteristic such as green, environmental protection; 4. add BOOST-ZVT technology, improve system reliability and efficiency.
Claims (4)
1. the non-isolation bidirectional, dc of the multiport with a soft switch transformation topology circuit, it is characterized in that, comprise energy-storage system of accumulator (1), super capacitor energy storage system (2) and (3) three branch roads of photovoltaic generating system, the output of energy-storage system of accumulator (1), super capacitor energy storage system (2) and photovoltaic generating system (3) is DC bus (10), DC bus (10) is connected with DC load (13) on the one hand, is connected on the other hand by DC/AC converter (12) with AC load (13).
2. the non-isolation bidirectional, dc of a kind of multiport with soft switch according to claim 1 transformation topology circuit, is characterized in that, described energy-storage system of accumulator (1) comprises the storage battery (4) and the first two-way DC/DC converter (5) that are connected.
3. the non-isolation bidirectional, dc of a kind of multiport with soft switch according to claim 1 transformation topology circuit, it is characterized in that, described super capacitor energy storage system (2) comprises the ultracapacitor (8) and the second two-way DC/DC converter (9) that are connected.
4. the non-isolation bidirectional, dc of a kind of multiport with soft switch according to claim 1 transformation topology circuit, is characterized in that, described photovoltaic generating system (3) comprises the solar panel (6) and the DC/DC converter (7) that are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420070201.4U CN203761117U (en) | 2014-02-18 | 2014-02-18 | Multiport non-isolated two-way DC conversion topological circuit with soft switch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420070201.4U CN203761117U (en) | 2014-02-18 | 2014-02-18 | Multiport non-isolated two-way DC conversion topological circuit with soft switch |
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| CN203761117U true CN203761117U (en) | 2014-08-06 |
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| CN201420070201.4U Expired - Fee Related CN203761117U (en) | 2014-02-18 | 2014-02-18 | Multiport non-isolated two-way DC conversion topological circuit with soft switch |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283298A (en) * | 2014-09-28 | 2015-01-14 | 新疆希望电子有限公司 | Storage battery and super-capacitor hybrid energy storage charging and discharging current control method |
| CN104901408A (en) * | 2015-06-15 | 2015-09-09 | 山东信通电子股份有限公司 | Solar power supply method and device employing super-capacitor to prolong service life of battery |
| CN105207575A (en) * | 2015-09-08 | 2015-12-30 | 江苏绿扬电子仪器集团有限公司 | Hybrid energy storage device |
| CN106787707A (en) * | 2017-02-24 | 2017-05-31 | 上海交通大学 | Embedded accumulation energy type multimode tandem photovoltaic DC booster converter and application process |
| CN106786693A (en) * | 2016-12-20 | 2017-05-31 | 浙江海洋大学 | For primary frequency modulation and a kind of energy storage device system of AGC auxiliary adjustment technologies |
| CN106972637A (en) * | 2017-05-16 | 2017-07-21 | 广东电网有限责任公司电力科学研究院 | A kind of mixed type movable energy storage system |
| CN107911024A (en) * | 2017-12-11 | 2018-04-13 | 三峡大学 | A kind of high efficiency series hybrid multiport DC/DC converters |
| CN107947572A (en) * | 2017-12-11 | 2018-04-20 | 三峡大学 | A kind of series hybrid multiport DC/DC converters suitable for energy-storage units access |
| CN108075725A (en) * | 2016-11-10 | 2018-05-25 | 深圳普唯能源科技有限公司 | A kind of novel solar power generation system |
| WO2018157838A1 (en) * | 2017-03-03 | 2018-09-07 | 伊顿智能动力有限公司 | Combined dc-dc converter for use in hybrid power system |
| CN110752655A (en) * | 2019-11-11 | 2020-02-04 | 国网河南省电力公司南阳供电公司 | Hybrid energy storage device for realizing alternating-current constant-voltage charging |
| CN113394864A (en) * | 2020-03-13 | 2021-09-14 | 北京群菱能源科技有限公司 | Lithium battery and super capacitor composite energy storage system based on optimal design control |
| EP4346051A1 (en) * | 2022-07-13 | 2024-04-03 | Technical University Of Crete | Smart electronic dc to ac power converter with multiple energy sources |
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2014
- 2014-02-18 CN CN201420070201.4U patent/CN203761117U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283298A (en) * | 2014-09-28 | 2015-01-14 | 新疆希望电子有限公司 | Storage battery and super-capacitor hybrid energy storage charging and discharging current control method |
| CN104901408A (en) * | 2015-06-15 | 2015-09-09 | 山东信通电子股份有限公司 | Solar power supply method and device employing super-capacitor to prolong service life of battery |
| CN104901408B (en) * | 2015-06-15 | 2018-08-21 | 山东信通电子股份有限公司 | Utilize the solar powered method and device of super capacitor prolonging service life of battery |
| CN105207575A (en) * | 2015-09-08 | 2015-12-30 | 江苏绿扬电子仪器集团有限公司 | Hybrid energy storage device |
| CN108075725A (en) * | 2016-11-10 | 2018-05-25 | 深圳普唯能源科技有限公司 | A kind of novel solar power generation system |
| CN106786693A (en) * | 2016-12-20 | 2017-05-31 | 浙江海洋大学 | For primary frequency modulation and a kind of energy storage device system of AGC auxiliary adjustment technologies |
| CN106786693B (en) * | 2016-12-20 | 2020-07-28 | 浙江海洋大学 | Energy storage device system for primary frequency modulation and AGC auxiliary adjustment technology |
| CN106787707A (en) * | 2017-02-24 | 2017-05-31 | 上海交通大学 | Embedded accumulation energy type multimode tandem photovoltaic DC booster converter and application process |
| CN106787707B (en) * | 2017-02-24 | 2020-05-22 | 上海交通大学 | Embedded energy storage type multi-module tandem photovoltaic direct current boost converter and application method |
| WO2018157838A1 (en) * | 2017-03-03 | 2018-09-07 | 伊顿智能动力有限公司 | Combined dc-dc converter for use in hybrid power system |
| CN106972637A (en) * | 2017-05-16 | 2017-07-21 | 广东电网有限责任公司电力科学研究院 | A kind of mixed type movable energy storage system |
| CN107911024A (en) * | 2017-12-11 | 2018-04-13 | 三峡大学 | A kind of high efficiency series hybrid multiport DC/DC converters |
| CN107947572A (en) * | 2017-12-11 | 2018-04-20 | 三峡大学 | A kind of series hybrid multiport DC/DC converters suitable for energy-storage units access |
| CN107947572B (en) * | 2017-12-11 | 2019-12-03 | 三峡大学 | A kind of series hybrid multiport DC/DC converter suitable for energy-storage units access |
| CN110752655A (en) * | 2019-11-11 | 2020-02-04 | 国网河南省电力公司南阳供电公司 | Hybrid energy storage device for realizing alternating-current constant-voltage charging |
| CN113394864A (en) * | 2020-03-13 | 2021-09-14 | 北京群菱能源科技有限公司 | Lithium battery and super capacitor composite energy storage system based on optimal design control |
| EP4346051A1 (en) * | 2022-07-13 | 2024-04-03 | Technical University Of Crete | Smart electronic dc to ac power converter with multiple energy sources |
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Legal Events
| Date | Code | Title | Description |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20170218 |