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Classification and principle analysis of photovoltaic intelligent integrated system
- May 17, 2018 -

In recent years, with the rapid rise of the domestic photovoltaic market, the development and construction of photovoltaic power plants is continuing to reduce the cost of electricity. At the same time, the realization of evaluation of the Internet has become the consensus of the industry. The improvement of power generation efficiency and reliability has become the main basis for the investment returns of photovoltaic power plants in the industry. The photovoltaic intelligent integrated system not only comprehensively enhances the utilization of solar energy for photovoltaic generation, but also is widely used in the photovoltaic industry due to its superiority in adapting to complex terrain and adapting to local conditions.

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Photovoltaic tracking system classification


The photovoltaic tracking system is divided into fixed adjustable, flat single-axis, inclined single-axis and dual-axis trackers according to the adjustment angle of the bracket. According to calculations, flat single-axis can increase power generation by 10%-20%, single-axis tilt can increase power generation by 20%-25%, and dual-axis can increase power generation by up to 40%. The flat single-axis reliability risks are relatively low, while the skew single-axis and biaxial risks are higher.


Flat single axis tracking system

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Cost effectiveness comparison


The traditional mode fixed bracket is very low compared to the tracking system threshold. After the tracking system is intelligent, it can better improve its power generation efficiency. CITIC-Bo's flat single-axis tracking system uses the world's first 2.0 high-reliability redundant design, dual-motor drive system, dual CPU control system, dual-sensing system (electronic gyro), to achieve closed-loop control for the real owners A tracking system that never stops is realized. At the same time, the flat single-axis tracking system can adapt to more complex terrain conditions and effectively meet the requirements of adopting a tracking system in different sizes and narrow terrains.


Comprehensive flat single-axis, inclined single-axis, dual-axis tracking system Three products comprehensive cost performance point of view, flat single-axis comparison has an advantage. Although the twin-axis power generation efficiency increased by 40%, but its support cost reached 3-4 yuan / watt, the amount of land resources is two or three times the fixed stent, although improving efficiency, but the initial investment cost is large; oblique single axis is the view Between flat single-axis and double-axis, the cost of support and land resources are about twice that of flat single-axis. The flat single axis system is divided into a standard flat single axis and a flat single axis with a tilt angle. Under the same platform, the flat single axis with a tilt angle can increase the power generation efficiency by 5-10% compared to the standard flat single axis, and the standard The flat single axis can achieve a 10-15% increase over conventional stents and can achieve 18-23% with a tilt angle. Therefore, from the entire photovoltaic power generation cost and overall efficiency, flat single axis is its best product.


Photovoltaic tracking systems bring many benefits to photovoltaic systems. Thanks to tracking technology, photovoltaic panels can be adjusted at any time, and power stations are no longer susceptible to disaster weather. In addition, the photovoltaic power station installed with the tracking system can be more closely integrated with agricultural production. In the environment of ponds, mountains, and wasteland, it is flexible in operation and has advantages over traditional power plants. Nongguang and Yuguang complementary systems can also install photovoltaic tracking systems. The system can realize the complementarity of agriculture, fish ponds and photovoltaics, and truly maximize the benefits of owners in the limited land resources.


Oblique single axis tracking system

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The all-terrain tracking system is based on different terrains and designed according to local conditions. The system can achieve three to six rows of linkage, driving in the middle, followed by linkage on both sides, allowing a large gradient range, can be achieved 0-25 ° east-west, north-south to 0-25 degrees, and allows 120 mm settlement without manual intervention. With strong terrain adaptability, it can be constructed and constructed with slopes and potentials to give full play to its maximum light tracking effect and enhance its maximum power generation efficiency.


Photovoltaic intelligent tracking system has also been gradually recognized and used by domestic and foreign power station developers to improve the efficiency of photovoltaic power generation. It is not only the improvement of the integration of efficiency and innovation of components, inverters, and cables, but also the photovoltaic intelligent tracking system. To achieve the improvement of the overall efficiency of photovoltaic power plants.


Reliability is the key to tracking systems


Judging from the current PV brackets, the homogeneity of value is relatively serious. Many companies blindly pursue cost reductions to drive down the prices of their products, and there is also a pattern of low-price competition among firms. The first thing to do is to product quality. How to ensure the maximization of power generation efficiency and product reliability in 25 years is the key. It is mainly product quality and service; followed by the developer how to look at the overall efficiency within the 25-year life cycle, the comprehensive value of cost, can not blindly seek low-price competition recently, of course, we can from the design process, production links, to achieve lean management To reduce cost capabilities and increase cost-effectiveness.


First, from the aspect of product system design, it is theoretically solved whether the tracking system is reliable and stable. On the one hand, the design concept of a dual-motor with one master and one driven system is adopted, and the other side automatically detects and switches according to the cloud technology platform to realize the promise of “never stop”. At the same time, according to different terrains, according to local conditions, different processes to achieve all-terrain tracking.