How to choose for distributed photovoltaic projects module and inverter?

So far the development and progress of human society are the growth of energy consumption as a 'fuel'. Throughout the evolutionary history of human society, since humans began to save and use of fire, to today, the fusion of the use of clean energy such as wind power and hydropower, both

the growth of energy consumption to promote the development and progress of human society. Throughout the history of the evolution of human society, starting from the conservation and use of human fire, to this day for nuclear fusion, the use of clean energy such as hydroelectric power, wind power, reflect the indispensable energy in the process of human development. Distributed solar photovoltaic power generation is one of the current trend. Distributed photovoltaic photovoltaic modules and inverters in the project selection is the key to the success of project feasibility study and preliminary design. At present, the use of solar energy for the various factories, companies, offices and residential buildings provide distributed power supply has been very mature and popular. For example, power supply to the factories in the park. Since the plant power consumption is big, it can almost their own use. Therefore, can use for online use remaining power model of distributed generation. Distributed photovoltaic power generation, after the completion of the project can effectively alleviate the pressure of the park part of the factory power supply. Effectively relieve the contradiction between supply and demand of the local grid, optimize the structure of system power supply, reduce the pressure of environmental protection, promote the sustainable development of regional economy, contribute to the regional energy conservation and emissions reduction, conform to the state of distributed photovoltaic working train of thought. Distributed photovoltaic power generation project by photovoltaic modules, grid inverter, metering device and the power distribution system. Solar energy through the photovoltaic module into direct current, direct current (dc) through the grid inverter is transformed into the same as the grid frequency and phase of the sine wave current, part of the inverter power supply to the local load and the rest of the feed into the electricity grid. In the distributed photovoltaic power generation project feasibility study and preliminary design, the choice of photovoltaic modules and the configuration is an important link of inverter. Photovoltaic modules by multiple single solar cell series, parallel and packaged tightly. Now, film power generation and caigang watts power generation has gradually developed from traditional polycrystalline and monocrystalline silicon modules. Silicon photoelectric conversion efficiency has been improved. In the past five years, the conversion efficiency from 14% to more than 20%. In the next silicon electric conversion efficiency will be further improved. In addition, in the past five years, the price of photovoltaic modules have fallen sharply, from $4 / Wp at 2 yuan/Wp. At present, there are still the decline of 0 +. Predictably, photovoltaic power generation will soon enter the affordable access to the Internet age, the stage of distributed photovoltaic will be bigger and bigger, this is very beneficial to the development of the human future. Pv module is usually used for monocrystalline silicon and polycrystalline silicon solar pv module module. Polycrystalline silicon pv module manufacturing process is similar to single crystal silicon pv module manufacturing process. The efficiency of polycrystalline silicon photovoltaic modules can be up to 16. 5% ~ 18%, and the transformation efficiency of monocrystalline silicon solar energy components is commonly 17% ~ 19%, slightly lower than that of single crystal silicon pv modules, but slightly more expensive than producing polysilicon monocrystalline silicon components. At present, the major domestic manufacturers of crystalline silicon solar battery components used in large-scale grid photovoltaic power generation system, the majority of its specification between 270 wp - 360 wp. China produces 60 pieces of polycrystalline silicon cell module to a 270 w and 275 w for the mainstream products, and single crystal silicon cell module with 285 w, 290 w and 295 w for the mainstream products. 72 pieces of polycrystalline silicon cell module to a 300 wp - 310 wp for mainstream products, 72 pieces of single crystal silicon cell module 350 wp and 360 wp as mainstream products. According to the practical engineering experience, monocrystalline silicon components power generation efficiency is higher, the attenuation is small, the efficiency of monocrystalline silicon is generally selected components.