Section1 the basic concepts of solar photovoltaic
First, the basic concept
Solar photovoltaic system is the use of solar photovoltaic effect of semiconductor materials, the solar radiation directly into a new electricity generating system. Photovoltaic power generation system is to convert solar energy into electrical energy generation system, the use of the photovoltaic effect. The main components of PV systems are solar cells, batteries, controller and inverter.
Second, the classification of photovoltaic power generation system
Solar photovoltaic power generation system is divided into separate grid photovoltaic systems and solar photovoltaic systems.
Independent solar photovoltaic solar lighting generation is not connected with the grid power generation, typical night in need of batteries to store electricity for energy. Independent of solar photovoltaic power generation is mainly used within the civilian remote villages, such as home systems, village-level solar photovoltaic power plant; mainly used within the industry of telecommunications, satellite broadcasting TV, solar water pumps, the availability of wind power and small hydropower The region also could form hybrid power systems, such as wind power / solar power complementary systems.
Grid solar PV solar PV power is connected to the national power grid in the way of a supplementary network, is not typical of the battery.
Section 2 Composition of photovoltaic power generation system
Solar power system consists of solar batteries, solar controller, battery (group). If the output power AC 220V or 110V, also need to configure inverter. The role of each part as follows:
(A) of solar panels: solar panel solar lighting system is a core part of the solar system is part of the highest value. Its role is to convert the sun’s radiation to electrical energy, stored in batteries or sent to, or promotes the work load. Solar panels will directly determine the quality and cost of quality and cost of the entire system.
(B) Solar Controller: Solar controller’s role is to control the entire system state, and played a battery charge protection, over discharge protection. In the large temperature difference, the controller should have qualified temperature compensation function. Other additional features such as light-control switch, control switch when the controller should be optional.
(C) Battery: lead-acid batteries generally, small micro-systems, can also be used nickel metal hydride batteries, nickel cadmium batteries or lithium batteries. Its role is when there is light emitted by solar energy stored up, and then released when needed.
(D) Inverter: In many occasions, will need to provide 220VAC, 110VAC AC power source. As a direct output of solar lighting energy are generally 12VDC, 24VDC, 48VDC. In order to provide the 220VAC electrical power, solar power system needs to be issued by the DC energy into AC power, so need to use the DC-AC inverter. In some cases, you need to use a variety of voltage, load, also used DC-DC inverter, such as the electrical energy will be converted to 5VDC 24VDC of power (note, not a simple step-down).
Section III key technology of PV systems and industrial chain
First, the key technology
Grid-connected PV power generation in China started late, has developed rapidly in recent years. In the Ministry of Science, “Ninth Five-Year” and “fifth” preliminary research programs carried out in the roof grid-connected photovoltaic power systems technology development and pilot studies, and progress. These developments indicate that China has initially mastered the grid-connected photovoltaic power generation system the key technologies, including cvtpwm maximum power tracking control technology, and network inverter technology, the system real-time data acquisition and data transmission technology, with the design and construction of practical certain scale and grid-connected photovoltaic power generation systems.
Second, the latest technological developments in 2009
Nano Science and Technology University of Missouri used to improve solar cell efficiency spear
University of Missouri (Missouri University of Science and Technology) researchers said, will be a zinc oxide (ZnO) nano-made spears (nanospears) nail in the solar cell surface, will be able to expand its absorption spectrum and thus enhance the solar cell efficiency.
First, the basic concept
Solar photovoltaic system is the use of solar photovoltaic effect of semiconductor materials, the solar radiation directly into a new electricity generating system. Photovoltaic power generation system is to convert solar energy into electrical energy generation system, the use of the photovoltaic effect. The main components of PV systems are solar cells, batteries, controller and inverter.
Second, the classification of photovoltaic power generation system
Solar photovoltaic power generation system is divided into separate grid photovoltaic systems and solar photovoltaic systems.
Independent solar photovoltaic solar lighting generation is not connected with the grid power generation, typical night in need of batteries to store electricity for energy. Independent of solar photovoltaic power generation is mainly used within the civilian remote villages, such as home systems, village-level solar photovoltaic power plant; mainly used within the industry of telecommunications, satellite broadcasting TV, solar water pumps, the availability of wind power and small hydropower The region also could form hybrid power systems, such as wind power / solar power complementary systems.
Grid solar PV solar PV power is connected to the national power grid in the way of a supplementary network, is not typical of the battery.
Section 2 Composition of photovoltaic power generation system
Solar power system consists of solar batteries, solar controller, battery (group). If the output power AC 220V or 110V, also need to configure inverter. The role of each part as follows:
(A) of solar panels: solar panel solar lighting system is a core part of the solar system is part of the highest value. Its role is to convert the sun’s radiation to electrical energy, stored in batteries or sent to, or promotes the work load. Solar panels will directly determine the quality and cost of quality and cost of the entire system.
(B) Solar Controller: Solar controller’s role is to control the entire system state, and played a battery charge protection, over discharge protection. In the large temperature difference, the controller should have qualified temperature compensation function. Other additional features such as light-control switch, control switch when the controller should be optional.
(C) Battery: lead-acid batteries generally, small micro-systems, can also be used nickel metal hydride batteries, nickel cadmium batteries or lithium batteries. Its role is when there is light emitted by solar energy stored up, and then released when needed.
(D) Inverter: In many occasions, will need to provide 220VAC, 110VAC AC power source. As a direct output of solar lighting energy are generally 12VDC, 24VDC, 48VDC. In order to provide the 220VAC electrical power, solar power system needs to be issued by the DC energy into AC power, so need to use the DC-AC inverter. In some cases, you need to use a variety of voltage, load, also used DC-DC inverter, such as the electrical energy will be converted to 5VDC 24VDC of power (note, not a simple step-down).
Section III key technology of PV systems and industrial chain
First, the key technology
Grid-connected PV power generation in China started late, has developed rapidly in recent years. In the Ministry of Science, “Ninth Five-Year” and “fifth” preliminary research programs carried out in the roof grid-connected photovoltaic power systems technology development and pilot studies, and progress. These developments indicate that China has initially mastered the grid-connected photovoltaic power generation system the key technologies, including cvtpwm maximum power tracking control technology, and network inverter technology, the system real-time data acquisition and data transmission technology, with the design and construction of practical certain scale and grid-connected photovoltaic power generation systems.
Second, the latest technological developments in 2009
Nano Science and Technology University of Missouri used to improve solar cell efficiency spear
University of Missouri (Missouri University of Science and Technology) researchers said, will be a zinc oxide (ZnO) nano-made spears (nanospears) nail in the solar cell surface, will be able to expand its absorption spectrum and thus enhance the solar cell efficiency.
This years international solar PV industry size increased past the predictions of the before year, allowing prices throughout the photovoltaic sequence to hold up much better than anticipated. Globally photovoltaic industry set ups achieved a record high of 18.2 GW truly, comprising growth of 139% Y/Y. The photovoltaic industry generated $82 billion dollars in international earnings truly, up 105% Y/Y from $40 billion dollars during 2009. Meanwhile, worldwide solar panel production achieved 20.5 GW truly, up from 9.86 GW during 2009. Due to the recent sharp cuts in charges in European countries, the industry will need to activate positive photovoltaic policies across new markets and areas in order to be successful.
Solar Photovoltaic Market