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How Can We Maximize The Benefits Of Photovoltaic Power Stations?
- Apr 24, 2018 -

How can we maximize the benefits of photovoltaic power stations?

      With the rapid development of photovoltaics, roofs everywhere are becoming important markets for photovoltaic power generation. Compared with cities, suburban towns and villages have abundant roof resources and owners own roof property rights, which provides very favorable conditions for the development of distributed photovoltaic power plants. Rooftop resources are a valuable asset and many owners with their own roofs benefit from it. In addition to a large area of roof resources, the roofs of towns and villages are also of great value. The property rights of the home roof are clear, and there will not be disputes over property rights issues, let alone pressure from property and urban management, and it is possible to make full use of idle roof resources to build photovoltaic power generation. In addition, every household has a roof that is idle and can be found everywhere. More and more independent family owners have started to invest in distributed photovoltaics and make money from their idle homes. So how can PV generate greater returns for the people?

       We all know that a complete photovoltaic system mainly includes: solar modules, inverters, brackets, cables, bus boxes, and other spare parts. So when choosing solar modules, we are always tangled in the end is to choose a single crystal good or good? !

      In fact, monocrystalline silicon cells and polycrystalline silicon solar cells are not much different, the life and stability between the two are very good, if you have to say something different, it should be the energy consumed in the manufacturing process, Polysilicon consumes about 30% less energy than single crystal silicon. Therefore, if you consider the issue of environmental protection, then the use of polysilicon solar cells will be more energy-efficient and environmentally friendly.


      With the popularization of photovoltaic power generation knowledge, many fan friends not only consider energy saving and environmental protection when installing photovoltaic power plants, they also need to purchase the best components at the most reasonable price, and the demand for power generation is also increasing. As far as our current components on the market are concerned, they can be roughly divided into three categories: monocrystalline silicon components, polysilicon components, and amorphous silicon components (thin film components).

      1. Monocrystalline silicon components: Monocrystalline silicon components generate electricity in the presence of weak light (referring to sunlight), and photoelectric conversion efficiency is the highest, but the production cost is high. Currently it is the mainstream of the market.


      2. Polycrystalline silicon components: The production process of polysilicon components is similar to that of monocrystalline silicon components, and the conversion efficiency is lower than that of monocrystalline silicon components. The advantage is that the production cost is lower than that of single crystals, and the cost performance is relatively high.


      3. Amorphous silicon module (thin film module): The weak light of the amorphous silicon module generates electricity well, but the conversion efficiency is low and not stable enough. Compared with monocrystalline silicon components and polysilicon components, it is basically 2-3 generations worse.


      In fact, these three components each have their own advantages. We can choose the one that is most suitable for our own home based on our local conditions. For the arrangement of components, I believe that many fan friends also have a relevant understanding, such as: high power generation of components installed in horizontal rows; components installed in vertical rows have relatively low power generation relative to horizontal rows. Someone who sees this will ask: What is the high-power generation of horizontally-mounted components?


      The conventional assembly's cells will be serially connected into three separate strings as shown in the figure below, and a bypass diode is added to each string. There are usually three diodes to ensure the output power of the module. The bypass diode will bypass the battery string when the battery receives blocking and the power loss reaches a certain value (10%), avoiding the internal loss of the battery chip, that is, the short board effect inside the module, improving the power output and protecting Components.

The lateral layout fully considers the operating characteristics of the component bypass diodes. All the system squares in the project adopt this kind of balanced arrangement to maximize the output power when the array is shaded.


      Seeing here, some fan friends may ask: Then do we have to install the power station horizontally?

      The answer is negative.


       Although the horizontally-mounted components generate a high amount of power, their installation is far more difficult than you might imagine; the vertical installation of the components even though the power generation is slightly lower than the horizontal installation, the installation process is relatively simple. In China, the most commonly used mounting methods are vertical installations. As long as the installation of components is selected, the power generation of this power station will not be low.