CN204669309U - A kind of solar energy photovoltaic direct current power station - Google Patents
A kind of solar energy photovoltaic direct current power station Download PDFInfo
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- CN204669309U CN204669309U CN201520255747.1U CN201520255747U CN204669309U CN 204669309 U CN204669309 U CN 204669309U CN 201520255747 U CN201520255747 U CN 201520255747U CN 204669309 U CN204669309 U CN 204669309U
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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
Abstract
The utility model discloses a kind of solar energy photovoltaic direct current power station, comprising: solar photovoltaic assembly, commercial power rectification filter and output-controlling device.Technique effect of the present utility model is, photo-voltaic power supply is applied directly in DC load equipment and uses, when output power of photovoltaic module is sufficient, preferentially use photovoltaic electric energy, during as deficiency, insufficient section is transferred by from civil power, as all used mains-supplied when exporting without effective power.The utility model no-reverse change link, decreases the loss that DC/AC conversion links produces, thus improves the utilization ratio of solar energy, and simple, the stable performance of this system configuration simultaneously, adaptation are wide, low cost and other advantages, adapt to industrial production and large-area applications.
Description
Technical field
The utility model relates to a kind of solar energy photovoltaic direct current power station.
Background technology
At present, known solar energy photovoltaic direct current power station, all comprises DC/AC inversion link in its course of work, all power loss can be produced in transfer process, and equipment cost is relatively high, cause that cost of investment is high, payoff period is long, be unfavorable for the development of solar photovoltaic industry; And small-sized solar power plant comparatively relies on real-time sunlight conditions, if sunlight is not enough, then enough electric power cannot be provided to run to drive it for power consumption equipment.
Summary of the invention
Send out that station cost of investment is high, payoff period is long to solve current photovoltaic further, and small power generation equipment cannot carry out the problem of powering when sunlight deficiency, the utility model provides a kind of solar energy photovoltaic direct current power station of stable performance.Effectively can promote the utilization ratio of solar energy power generating, reduce the input cost of equipment.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is, a kind of solar energy photovoltaic direct current power station, comprising:
For the solar energy received is changed into electric energy and the photovoltaic module of output dc voltage;
For connecting AC power, the commercial power rectification filter of output dc voltage after rectifying and wave-filtering;
For to receive and the direct current that convert light photovoltaic assembly and commercial power rectification filter transmit exports the output-controlling device of DC load to;
The input of output-controlling device is connected with photovoltaic module, commercial power rectification filter respectively, and the output of output-controlling device is connected with DC load equipment.
Described a kind of solar energy photovoltaic direct current power station, described photovoltaic module is monocrystaline silicon solar cell, polysilicon solar cell or thin-film solar cells.
Described a kind of solar energy photovoltaic direct current power station, the rated output voltage of described photovoltaic module is greater than the rated voltage of DC load equipment, and the rated output power of photovoltaic module is not less than DC load equipment rated input power.
Described a kind of solar energy photovoltaic direct current power station, the power supply of described commercial power rectification filter to 110V ~ 50/60Hz, 220V ~ 50/60Hz or 380V 3N ~ 50/60Hz carries out rectifying and wave-filtering, output dc voltage.
Described a kind of solar energy photovoltaic direct current power station, the output voltage of described commercial power rectification filter is greater than the rated voltage of load equipment, and rated output power is not less than load equipment rated input power.
Described a kind of solar energy photovoltaic direct current power station, described output-controlling device comprises:
Photovoltaic module and commercial power rectification filter are carried the direct voltage of coming, carries out the regulating circuit of the direct voltage changing stable output;
For judging photovoltaic module input power size is to control whether to transfer electric energy supplemental capacity to guarantee the stable of output voltage from civil power, and ensure the input detecting circuit that photovoltaic is preferential;
For regulation output voltage to guarantee the output detection circuit of output voltage coupling DC load equipment;
Described input detecting circuit, regulating circuit and output detection circuit are connected successively.
Described a kind of solar energy photovoltaic direct current power station, described output-controlling device also comprises for detecting power output size, disconnects the overload protecting circuit exported, after described overload protecting circuit is connected serially to output detection circuit when overload or short circuit.
Described a kind of solar energy photovoltaic direct current power station, described output-controlling device also comprises the height for detecting input voltage, and the overvoltage crowbar of closing device during electric voltage exception, before described overvoltage crowbar is connected on input detecting circuit.
Technique effect of the present utility model is, can the solar photovoltaic power received be converted to galvanic current source for DC power supply load equipment, time as not enough in photovoltaic power, insufficient section by output-controlling device supply from civil power, as all used mains-supplied without during effective photovoltaic power.
Further illustrate: technology of the present utility model is, solar photovoltaic assembly rated output voltage > load equipment nominal input voltage, rated output power >=load equipment rated input power; Commercial power rectification filter output voltage > load equipment nominal input voltage, rated output power >=load equipment rated input power.
Further illustrate: technology of the present utility model is, photovoltaic module can be carried the direct voltage of coming by output-controlling device, changes, the direct voltage of stable output; Commercial power rectification filter can be carried the direct voltage of coming, change, the direct voltage of stable output; Control section comprises input detecting circuit, for judging photovoltaic module input power size, controls whether to transfer electric energy supplemental capacity from civil power, guarantees the stable of output voltage, and ensures that photovoltaic is preferential; Comprise output detection circuit, for regulation output voltage, guarantee that output voltage is in rational scope; Comprise overload protecting circuit, for detecting power output size, during as occurred overload or short circuit, output being disconnected, guarantees that equipment is not damaged; Also comprising overvoltage crowbar, for detecting the height of each input, output voltage, during as occurred abnormal, by device shutdown, guaranteeing that equipment itself and load equipment are not damaged.
The utility model, without the need to inversion link, decreases the loss that DC/AC conversion links produces, thus improves the utilization ratio of solar energy, and simple, the stable performance of this system configuration simultaneously, adaptation are wide, low cost and other advantages, adapt to industrial production and large-area applications.
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model output-controlling device.
Embodiment
See Fig. 1, the utility model forms primarily of solar photovoltaic assembly, commercial power rectification filter and output-controlling device;
Photovoltaic module is that the solar energy received is changed into electric energy, output dc voltage;
Commercial power rectification device is output dc voltage after the AC power rectifying and wave-filtering by single-phase or three-phase;
Output-controlling device is connected with photovoltaic module, commercial power rectification filter and DC load equipment respectively, for photovoltaic module, commercial power rectification filter are carried the direct voltage of coming, convert galvanic current pressure to, for DC load equipment use, photovoltaic is preferential.
Photovoltaic module part of the present utility model is by single (many) crystal silicon solar batteries or thin-film solar cells, forms according to system requirements;
Output-controlling device of the present utility model, the power supply that photovoltaic module inputs is done DC/DC conversion, guarantee the direct voltage of stable output, as: photovoltaic module output voltage DC300V, and load equipment needs DC220V voltage, the power supply that then photovoltaic module exports converts DC220V voltage to, for load after this device.
Output-controlling device of the present utility model, does DC/DC conversion by the power supply that commercial power rectification filter inputs, as: civil power is 220V ~/50Hz power supply input, about DC270V after rectifying and wave-filtering, then converts thereof into DC220V voltage for load.
Output-controlling device of the present utility model, input detecting circuit, for judging photovoltaic module input power size, control whether to transfer electric energy supplemental capacity from civil power, guarantee the stable of output voltage, and ensure that photovoltaic is preferential, as: detect that photovoltaic module output voltage is not less than minimum value, then can judge that output power of photovoltaic module can meet loading demand, this timed unit will close the DC/DC conversion of civil power part, thus reach the object of preferential photovoltaic.
In order to ensure that stable equipment operation is normal; described output-controlling device also comprises for detecting power output size; the overload protecting circuit exported is disconnected when overload or short circuit; and for detecting the height of input voltage; the overvoltage crowbar of closing device during electric voltage exception; thus play maintenance equipment operationally, when running into voltage, power instability, also can ensure that equipment self is not damaged.
Claims (8)
1. a solar energy photovoltaic direct current power station, is characterized in that, comprising:
For the solar energy received is changed into electric energy and the photovoltaic module of output dc voltage;
For connecting AC power, the commercial power rectification filter of output dc voltage after rectifying and wave-filtering;
For to receive and the direct current that convert light photovoltaic assembly and commercial power rectification filter transmit exports the output-controlling device of DC load to;
The input of output-controlling device is connected with photovoltaic module, commercial power rectification filter respectively, and the output of output-controlling device is connected with DC load equipment.
2. a kind of solar energy photovoltaic direct current power station according to claim 1, is characterized in that, described photovoltaic module is monocrystaline silicon solar cell, polysilicon solar cell or thin-film solar cells.
3. a kind of solar energy photovoltaic direct current power station according to claim 2, it is characterized in that, the rated output voltage of described photovoltaic module is greater than the rated voltage of DC load equipment, and the rated output power of photovoltaic module is not less than DC load equipment rated input power.
4. a kind of solar energy photovoltaic direct current power station according to claim 1, is characterized in that, the power supply of described commercial power rectification filter to 110V ~ 50/60Hz, 220V ~ 50/60Hz or 380V 3N ~ 50/60Hz carries out rectifying and wave-filtering, output dc voltage.
5. a kind of solar energy photovoltaic direct current power station according to claim 4, is characterized in that, the output voltage of described commercial power rectification filter is greater than the rated voltage of load equipment, and rated output power is not less than load equipment rated input power.
6. a kind of solar energy photovoltaic direct current power station according to claim 1, it is characterized in that, described output-controlling device comprises:
Photovoltaic module and commercial power rectification filter are carried the direct voltage of coming, carries out the regulating circuit of the direct voltage changing stable output;
For judging photovoltaic module input power size is to control whether to transfer electric energy supplemental capacity to guarantee the stable of output voltage from civil power, and ensure the input detecting circuit that photovoltaic is preferential;
For regulation output voltage to guarantee the output detection circuit of output voltage coupling DC load equipment;
Described input detecting circuit, regulating circuit and output detection circuit are connected successively.
7. a kind of solar energy photovoltaic direct current power station according to claim 1; it is characterized in that; described output-controlling device also comprises for detecting power output size, disconnects the overload protecting circuit exported, after described overload protecting circuit is connected serially to output detection circuit when overload or short circuit.
8. a kind of solar energy photovoltaic direct current power station according to claim 1; it is characterized in that; described output-controlling device also comprises the height for detecting input voltage, and the overvoltage crowbar of closing device during electric voltage exception, before described overvoltage crowbar is connected on input detecting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520255747.1U CN204669309U (en) | 2015-04-24 | 2015-04-24 | A kind of solar energy photovoltaic direct current power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520255747.1U CN204669309U (en) | 2015-04-24 | 2015-04-24 | A kind of solar energy photovoltaic direct current power station |
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| CN204669309U true CN204669309U (en) | 2015-09-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11894686B2 (en) | 2020-05-20 | 2024-02-06 | Huawei Technologies Co., Ltd. | Power control method and power system |
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2015
- 2015-04-24 CN CN201520255747.1U patent/CN204669309U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11894686B2 (en) | 2020-05-20 | 2024-02-06 | Huawei Technologies Co., Ltd. | Power control method and power system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180409 Address after: 412000 Hunan, Changsha City, Changsha City, Furong district Mawangdui Street East Second Ring two section No. 286 South Tiantian home 1701 room Patentee after: Changsha Kai Kai Electrical Appliance Co., Ltd. Address before: 410001 Hunan province Changsha Furong District Ping Road No. 288 Vientiane beachhead triumph bay 4 Building 2804 room Patentee before: Wu Kaifeng |