CN205004824U - Photovoltaic direct current system - Google Patents

Photovoltaic direct current system Download PDF

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Publication number
CN205004824U
CN205004824U CN201520809160.0U CN201520809160U CN205004824U CN 205004824 U CN205004824 U CN 205004824U CN 201520809160 U CN201520809160 U CN 201520809160U CN 205004824 U CN205004824 U CN 205004824U
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China
Prior art keywords
solar
output
diode
utility
model
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CN201520809160.0U
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Chinese (zh)
Inventor
李明仕
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WUHAN ENERGY ELECTRONICS Co Ltd
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WUHAN ENERGY ELECTRONICS Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/50Energy storage in industry with an added climate change mitigation effect

Abstract

The utility model relates to a photovoltaic power supply technical field discloses a photovoltaic direct current system, including inputing rectification return circuit, solar control ware, diode and first switch, input rectification return circuit and mains connection, the solar control ware is connected with solar panel, the output of solar control ware is connected with first switch, it is parallelly connected with the output of solar control ware that the output in input rectification return circuit passes through the diode, just the output voltage of solar control ware is greater than the output voltage in input rectification return circuit. The utility model discloses a power supply system preferential solar energy that adopts when using is supplied power, and the commercial power is automatic when solar energy powering insufficient replenishes, guarantees that the illumination lamps and lanterns reach the normal operating of relevant equipment to furthest utilizes solar energy.

Description

Photovoltaic DC electric power system
Technical field
The utility model relates to photovoltaic power supply technical field, more particularly, and particularly a kind of photovoltaic DC electric power system.
Background technology
In market, supermarket, basement, the indoor place such as factory and office, even if outside also still needs illumination in strong indoor sunshine again during daytime.What current indoor illumination light fitting employing was maximum is electronics build-up of luminance formula fluorescent lamp, and some have employed LED CFL lighting, also also has some other light fixtures.Many indoor and outdoor advertisement screen is also all need to work by day on the other hand, and these lightings and relevant device are all adopt mains-supplied at present.And when civil power power-off, these lightings and relevant device all cannot work.
Utility model content
The purpose of this utility model is to provide a kind of photovoltaic DC electric power system, and this System Priority uses solar powered, and when solar powered deficiency, civil power supplements automatically, and then the normal operation of the equipment of guarantee, thus maximum using solar energy.
In order to solve problem set forth above, the technical solution adopted in the utility model is: photovoltaic DC electric power system, comprise input rectifying loop, controller for solar, diode and the first switch, described input rectifying loop is electrically connected with city, described controller for solar is connected with solar panels, the output of described controller for solar is connected with the first switch, the output in described input rectifying loop is in parallel with the output of controller for solar by diode, and the output voltage of described controller for solar is greater than the output voltage in input rectifying loop.
According to a preferred embodiment of the present utility model: described diode is single diode or the transistor with diode characteristic.
According to a preferred embodiment of the present utility model: described transistor is metal-oxide-semiconductor or IGBT.
According to a preferred embodiment of the present utility model: the output in described input rectifying loop is also connected with a second switch with after the output parallel connection of controller for solar by diode.
Compared with prior art, the beneficial effects of the utility model are: what electric power system of the present utility model adopted in use is that direct current exports instead of exchanges, when solar powered deficiency, civil power supplements automatically, ensure the normal operation of lighting and other office equipment, thus maximumly utilize solar energy.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit diagram of photovoltaic DC electric power system of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection range of the present utility model.
Consult shown in Fig. 1, the utility model provides a kind of photovoltaic DC electric power system, comprise input rectifying loop, controller for solar, diode D1 and the first switch S 1, described input rectifying loop is electrically connected with city, described controller for solar is connected with solar panels, the output of described controller for solar is connected with the first switch S 1, the output in described input rectifying loop is in parallel with the output of controller for solar by diode D1, and the output voltage V2 of described controller for solar is greater than the output voltage V1 in input rectifying loop.
In the utility model, described diode D1 is single diode or the transistor with diode characteristic, and transistor can be metal-oxide-semiconductor or IGBT etc.
In the utility model, the output in described input rectifying loop is also connected with a second switch S2 with after the output parallel connection of controller for solar by diode D1.
The principle of photovoltaic DC electric power system of the present utility model is: when civil power input and solar energy input all normal, solar panels export one group of direct voltage V2 by controller for solar, civil power exports one group of direct voltage V1 by input rectifying loop, voltage V1 is in parallel by diode D1 and voltage V2 again, be greater than voltage V1 owing to designing upper voltage V2, then electric power system only has solar energy to export.And when bearing power is comparatively large or solar energy is not enough, V2 voltage drop, when dropping to V1+VD=V2 (VD is the conduction voltage drop of diode D1), civil power and the common powering load of solar energy, guarantee that load electricity consumption is unaffected, simultaneously also maximum power utilize solar energy.Then complete in civil power powering load when not having solar energy to evening, the output conversion of two kinds of electric energy in the utility model is all automatically complete, and without any the time interval, guarantees that load running is unaffected.
Above-described embodiment is the utility model preferably execution mode; but execution mode of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.

Claims (4)

1. photovoltaic DC electric power system, it is characterized in that: comprise input rectifying loop, controller for solar, diode and the first switch, described input rectifying loop is electrically connected with city, described controller for solar is connected with solar panels, the output of described controller for solar is connected with the first switch, the output in described input rectifying loop is in parallel with the output of controller for solar by diode, and the output voltage of described controller for solar is greater than the output voltage in input rectifying loop.
2. photovoltaic DC electric power system according to claim 1, is characterized in that: described diode is single diode or the transistor with diode characteristic.
3. photovoltaic DC electric power system according to claim 2, is characterized in that: described transistor is metal-oxide-semiconductor or IGBT.
4. photovoltaic DC electric power system according to claim 1, is characterized in that: the output in described input rectifying loop is also connected with a second switch with after the output parallel connection of controller for solar by diode.
CN201520809160.0U 2015-10-17 2015-10-17 Photovoltaic direct current system Active CN205004824U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520809160.0U CN205004824U (en) 2015-10-17 2015-10-17 Photovoltaic direct current system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520809160.0U CN205004824U (en) 2015-10-17 2015-10-17 Photovoltaic direct current system

Publications (1)

Publication Number Publication Date
CN205004824U true CN205004824U (en) 2016-01-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520809160.0U Active CN205004824U (en) 2015-10-17 2015-10-17 Photovoltaic direct current system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105529811A (en) * 2016-02-02 2016-04-27 武汉艾德杰电子有限责任公司 Photovoltaic DC energy efficiency management system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105529811A (en) * 2016-02-02 2016-04-27 武汉艾德杰电子有限责任公司 Photovoltaic DC energy efficiency management system

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