The advantage of solar energy

Photovoltaic system in the solar industry rapid development today, compared with often return energy has the following advantages and features: (1) clean, efficient renewable energy ( Free use of nature to provide us with solar energy) (2) energy saving: no consumption of conventional energy sources. (3) environmental protection: the ring

today, with the rapid development of the solar industry, compared with the traditional energy, photovoltaic system has the following advantages and characteristic: ( 1) Clean efficient and renewable energy ( Solar energy with nature provided free of charge) ( 2) Energy saving: no consumption of conventional energy. ( 3) Environmental protection, non-pollution to the environment. ( 4) Simple installation without laying cables. ( 5) One-time investment for life. Solar energy is a kind of natural resources. It is a collection of solar energy and convert it into a controlled electric power system, solar photovoltaic power generation system. The technique is bell LABS in the early 1950 s successful research, initially only for high technology fields of aeronautics and astronautics. In the 1970 s the outbreak of the global energy crisis has prompted the technology quickly spread to the civilian areas. After 30 years of continuous improvement and development, has formed a complete set of mature technology. With the implementation of the global sustainable development strategy, the technology to get the support of many governments. Currently, it has been in the United States, Europe, Japan and other developed countries has been widely applied, and economically developed coastal areas in China has been widely applied. China is a country rich in solar energy resources. The former state planning commission, state economic and trade commission, Ministry of Science and Technology, ministry of construction and other ministries issued documents, to vigorously promote the use of solar photovoltaic and other renewable energy sources. However, so far, the people to the understanding of the solar energy application is in a stage of 'water heater, solar photovoltaic applications in only a few coastal developed provinces. Although inland provinces have enough solar energy resources, but has not been used efficiently. The development of new energy and renewable clean energy is the 21st century the world economy developing five one of the most decisive technical field. Full development and utilization of solar energy is the energy of governments around the world to promote the sustainable development strategy, solar power generation is one of the most popular. Solar photovoltaic power generation is an important part of the new energy. It is considered to be the world's most promising new energy technologies. Developed countries invested heavily in competitive research and development, actively promote industrialization process, vigorously develops the market application. At the beginning of new century, many countries have formulated the ambitious development plan, in order to promote the development of photovoltaic technology and industry. National renewable energy law enacted, the rapid development of photovoltaic roof plan, all kinds of tax breaks and subsidies and gradually mature green electricity to the development of photovoltaic market provides a good foundation. In recent years, photovoltaic power generation has developed rapidly. Photovoltaic market has started from the remote rural areas and to the good development of the special application of grid generation and combined with the construction of power supply. Photovoltaic (pv) power generation has shifted from complementary energy for alternative energy sources. Predicts the middle of the 21st century, solar photovoltaic power generation will account for 10% ~ 20% of the total world, become one of the basic energy of human beings. Working principle of photovoltaic (pv) power supply system is the use of solar energy battery components in the energy generated under direct sunlight battery charging, or under the control of the controller, in the case of meet the load demand directly to the load power supply. If the radiation is insufficient or at night, battery supply power to dc load under the control of the controller. For photovoltaic system includes ac load, also need to add an inverter to convert direct current (dc) to alternating current. The application of photovoltaic system has various forms, but the basic principle is the same. For other types of photovoltaic system, control mechanism and system components only according to the actual needs.