CN203826984U - Wind-solar complementary power generation system based on double-input Boost circuit - Google Patents
Wind-solar complementary power generation system based on double-input Boost circuit Download PDFInfo
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- CN203826984U CN203826984U CN201420132500.6U CN201420132500U CN203826984U CN 203826984 U CN203826984 U CN 203826984U CN 201420132500 U CN201420132500 U CN 201420132500U CN 203826984 U CN203826984 U CN 203826984U
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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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- 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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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Abstract
The utility model discloses a wind-solar complementary power generation system based on a double-input Boost circuit. The alternating current generated by a wind driven generator is transformed into direct current through a rectifier bridge to serve as a path of input of a double-input Boost transformer, and PV array output serves as the other path of input. The double-input Boost transformer is connected to a storage battery. The storage battery passes a DC/DC chopper and then supplies power to a DC load, and meanwhile, passes a DC/AC inverter to supply power to an AC load. A controller is electrically connected to the wind driven generator, a PV array, the storage battery, the DC load, the AC load, the DC/DC chopper and the DC/AC inverter, and then is connected to the double-input Boost transformer through a PWM controller. The wind-solar complementary power generation system adopts the double-input Boost circuit which can realize the input of two powers of different properties, and thus the circuit structure of a conventional multi-input transformer is simplified, the voltage gain is improved, and the voltage stress of a switching device is reduced.
Description
technical field:
The utility model relates to field of solar thermal power generation, relates in particular to a kind of wind and solar hybrid generating system based on dual input Boost circuit.
background technology:
China produces trade friction with American-European in succession in photovoltaic field, and the sector was destined to experience throe within very long period; Production capacity surplus and power grid construction hysteresis cause wind-powered electricity generation industry " to abandon wind ", and problem highlights.The work of carrying out following three aspects solves above two predicaments that industry faces by contributing to: industry restructuring is imperative; Under the prerequisite of performance market mechanism, standard industry development program is also very important; Because solar energy and wind energy have natural complementarity and excellent matching, accelerate to advance distributed wind and solar hybrid generating system in the installation of unit, community and family, use one of concrete measure especially.
In traditional distributed wind and solar hybrid generating system, two kinds of energy forms respectively need a DC chopper circuit, the break-make of controller coordinate control switch pipe, fluctuation and the very large direct current input of randomness are become to controlled direct current output, be connected in parallel on public DC bus, supply with energy storage device or DC load and use, the defect of its existence: complex structure and cost are higher on the one hand; On the other hand, in converter, the voltage stress of switching tube and diode is high.
utility model content:
The purpose of this utility model is just to provide a kind of wind and solar hybrid generating system based on dual input Boost circuit, according to the resources supplIes of this area, after reasonable disposition power system capacity, this distributed wind and solar hybrid generating system can become the independent electric power supply of high performance-price ratio.
The technical solution adopted in the utility model is:
A kind of wind and solar hybrid generating system based on dual input Boost circuit, comprise wind-driven generator, PV array, storage battery: the alternating current that wind-driven generator produces is transformed to direct current by rectifier bridge, as dual input Boost converter Yi road, input, PV array is output as direct current energy, as another road input of dual input Boost converter; Dual input Boost converter is connected to storage battery, and storage battery to DC load power supply, is powered to AC load through DC/AC inverter after DC/DC chopper simultaneously; Controller is electrically connected to wind-driven generator, PV array, and storage battery, DC load, AC load, DC/DC chopper and DC/AC inverter, and be connected to dual input Boost converter by PWM controller.
The preferred Freescale HCS12X of described controller single-chip microcomputer is core, current signal, battery tension signal, load-side current signal that controller collection wind-driven generator and PV array produce, produce after treatment two-way pwm pulse signal, control the break-make of switching tube in dual input Boost converter, realize the control that discharges and recharges of the MPPT maximum power point tracking of system and storage battery, produce other two-way pwm signal simultaneously and control the break-make of switching tube in DC/DC chopper and DC/AC inverter, the normal power supply of proof load.
Compared with prior art, the beneficial effects of the utility model are:
Tradition wind and solar hybrid generating system seldom adopts maximal power tracing technology, causes energy waste, and utilization rate of equipment and installations is also very low, the existing normal two cover DC/DC devices that adopt of wind and solar hybrid generating system of realizing MPPT maximum power point tracking, and during actual operation, cost of investment is high.Boost circuit application has continuous input current on MPPT, the simple advantage of drive circuit, the utility model has adopted a kind of novel dual input Boost circuit, this circuit can be realized two kinds of power supply inputs of different nature, simplified the circuit structure of traditional many input translators, improve voltage gain, reduced switching device voltage stress.Controller adopts the control strategy of variable step method of perturbation to carry out maximal power tracing, and wind energy conversion system and solar panel are simultaneously or when independently-powered, output voltage can be stabilized in the corresponding point of system maximum power, pulses little.The designed wind and solar hybrid generating system based on dual input Boost circuit can become the independent current source of high performance-price ratio, is conducive to this system promoting the use of in unit, community and family.
accompanying drawing explanation:
Accompanying drawing 1 is the utility model structural representation.
embodiment:
Below in conjunction with accompanying drawing, by embodiment, the utility model is described in further detail:
A kind of wind and solar hybrid generating system based on dual input Boost circuit, comprise wind-driven generator, PV array, storage battery: the alternating current that wind-driven generator produces is transformed to direct current by rectifier bridge, as dual input Boost converter Yi road, input, PV array is output as direct current energy, as another road input of dual input Boost converter; Dual input Boost converter is connected to storage battery, and storage battery to DC load power supply, is powered to AC load through DC/AC inverter after DC/DC chopper simultaneously; Controller is electrically connected to wind-driven generator, PV array, and storage battery, DC load, AC load, DC/DC chopper and DC/AC inverter, and be connected to dual input Boost converter by PWM controller.
Distributed wind-light complementary system based on dual input Boost circuit comprises wind-driven generator, rectifier bridge, PV array, controller, dual input Boost converter, storage battery, chopper, inverter and load etc., and system topology as shown in Figure 1.Select two blocks of 100W monocrystalline solar cells plates, the wind energy conversion system that a set of rated power is 300W, two 12V200AH storage batterys, it is core that controller be take Freescale HCS12X single-chip microcomputer.Because the output voltage of wind-driven generator and PV array is all smaller, and voltage is higher in actual use, therefore native system adopts Boost converter, makes output voltage higher than input voltage, does not adopt another consideration of BUCK converter to guarantee that charging current is continuous.The alternating current that wind-driven generator produces is transformed to direct current by rectifier bridge, as dual input Boost converter Yi road, inputs; PV array is output as direct current energy, as another road input of dual input Boost converter.According to the difference of the real-time natural conditions in the residing area of system, two kinds of energy, individually or simultaneously to system power supply, after DC chopped-wave, obtain the required DC charging voltage of storage battery.Storage battery is powered to DC load after DC/DC chopper, if AC load utilizes DC/AC inverter to transform to required alternating voltage.Current signal, battery tension signal, load-side current signal that controller collection wind-driven generator and PV array produce, produce after treatment two-way pwm pulse signal, control the break-make of switching tube in dual input Boost converter, realize the control that discharges and recharges of the MPPT maximum power point tracking of system and storage battery, produce other two-way pwm signal simultaneously and control the break-make of switching tube in DC/DC chopper and DC/AC inverter, the normal power supply of proof load.
dual input Boost circuit MPPT maximum power point tracking algorithm
By day or while there is no wind, photovoltaic array power output accounts for the overwhelming majority, the operation of photovoltaic array MPPT strategy.The duty of adjusting switching tube in dual input Boost circuit recently regulating rotary changes the equivalent resistance of circuit, realizes the adjusting to solar panel output voltage, thereby makes the power output of photovoltaic array reach maximum.Distributed wind and solar hybrid generating system maximal power tracing adopts variable step duty ratio disturbance observation, by changing the size of duty ratio D, regulate the input of dual input translation circuit and the relation between output, when realizing impedance matching, reached again the object of maximal power tracing.During system operation, controller output pwm signal duty ratio is D1, and power output is P1, the tracking initial stage adds a disturbance D that step-length is larger to signal, and the power after disturbance is P2, when P2>P1, continue by this direction disturbance, otherwise need to change perturbation direction.If P2≤P1 after two-way disturbance, at this moment can adopt less step-length to continue disturbance, when D<Dmin, stop disturbance, working point is now approximately current maximum power point.
At night or when overcast and rainy, seldom, wind energy conversion system provides power to photovoltaic array output energy, to follow the tracks of thinking as follows for wind energy conversion system MPPT:
1. actual wind speed < cuts wind speed, and wind energy conversion system is not worked, and MPPT strategy does not move;
2. cut wind speed≤actual wind speed≤rated wind speed, the operation of MPPT strategy, wind energy conversion system is operated near optimum tip-speed ratio;
If 3. rated wind speed < actual wind speed < cut-out wind speed, MPPT strategy adopts permanent power to control;
If actual wind speed > cut-out wind speed, wind energy conversion system is not worked.
Above-described embodiment is only preferably execution mode of the present utility model, and in addition, the utility model can also have other implementations.It should be noted that, do not departing under the prerequisite of the utility model design, within any apparent improvement and modification all should fall into protection range of the present utility model.
Claims (2)
1. the wind and solar hybrid generating system based on dual input Boost circuit, comprise wind-driven generator, PV array, storage battery, it is characterized in that: the alternating current that wind-driven generator produces is transformed to direct current by rectifier bridge, as the input of dual input Boost converter Yi road, PV array is output as direct current energy, as another road input of dual input Boost converter; Dual input Boost converter is connected to storage battery, and storage battery to DC load power supply, is powered to AC load through DC/AC inverter after DC/DC chopper simultaneously; Controller is electrically connected to wind-driven generator, PV array, and storage battery, DC load, AC load, DC/DC chopper and DC/AC inverter, and be connected to dual input Boost converter by PWM controller.
2. the wind and solar hybrid generating system based on dual input Boost circuit according to claim 1, it is characterized in that: the preferred Freescale HCS12X of described controller single-chip microcomputer is core, the current signal that controller collection wind-driven generator and PV array produce, battery tension signal, load-side current signal, produce after treatment two-way pwm pulse signal, control the break-make of switching tube in dual input Boost converter, realize the control that discharges and recharges of the MPPT maximum power point tracking of system and storage battery, produce other two-way pwm signal simultaneously and control the break-make of switching tube in DC/DC chopper and DC/AC inverter, the normal power supply of proof load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420132500.6U CN203826984U (en) | 2014-03-22 | 2014-03-22 | Wind-solar complementary power generation system based on double-input Boost circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420132500.6U CN203826984U (en) | 2014-03-22 | 2014-03-22 | Wind-solar complementary power generation system based on double-input Boost circuit |
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| CN203826984U true CN203826984U (en) | 2014-09-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242789A (en) * | 2014-09-18 | 2014-12-24 | 安徽工程大学 | Self-adaptive wind-solar complementary heating system |
| CN112018818A (en) * | 2020-09-11 | 2020-12-01 | 吉林大学 | Wind, light and storage integrated intelligent station system |
| WO2025028336A1 (en) * | 2023-07-31 | 2025-02-06 | Ntn株式会社 | Power conversion device and power generation system |
-
2014
- 2014-03-22 CN CN201420132500.6U patent/CN203826984U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242789A (en) * | 2014-09-18 | 2014-12-24 | 安徽工程大学 | Self-adaptive wind-solar complementary heating system |
| CN112018818A (en) * | 2020-09-11 | 2020-12-01 | 吉林大学 | Wind, light and storage integrated intelligent station system |
| WO2025028336A1 (en) * | 2023-07-31 | 2025-02-06 | Ntn株式会社 | Power conversion device and power generation system |
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Granted publication date: 20140910 Termination date: 20170322 |