Home > Knowledge > Content
What is a photovoltaic tracking system?
- Jul 23, 2018 -

At present, the photovoltaic industry is developing rapidly. The development and construction of photovoltaic power plants mainly have two objectives, reducing costs and increasing efficiency and achieving parity online. An effective way to ensure the investment income of photovoltaic power plants is to improve the efficiency of power generation and the reliability of power plant operation. The photovoltaic intelligent tracking system not only can improve the power generation efficiency, but also has a good adaptability to complex terrain. Now it has been paid attention to by the industry and is widely used. So what is a PV tracking system?

solar charge controller.jpg

1. Principle of photovoltaic tracking system

The design principle of the photovoltaic tracking system is not complicated. Since the angle of illumination of the sun is always changing, the traditional fixed photovoltaic panels can increase the amount of solar radiation received by using tracking technology, thereby increasing the overall power generation of the power station.

2. Classification of photovoltaic tracking system

The photovoltaic tracking system can be divided into fixed, adjustable, single axis, inclined single shaft and biaxial tracker according to the adjusting angle of the bracket. According to the calculation, the flat single shaft can increase the power generation of 10%-20%, the inclined single shaft can increase the power generation of 20%-25%, and the double shaft can increase the power generation of 40% at most. The risk of flat shaft reliability is relatively low, while the risk of oblique uniaxial and biaxial is relatively high.

Comprehensive flat single axis, oblique single shaft, dual axis tracking system three products comprehensive cost performance view, flat single axis comparison has advantages.

Although the power generation efficiency of the dual axis tracking system is increased by 40%, the cost of the support is 3-4 yuan per watt, and the possession of land resources is two or three times that of the fixed bracket. Although the efficiency is increased, the cost of the first investment is very large; in view of the single axis and the double axis, the cost of the support and the possession of the land resources are about 2 times that of the flat single axis. The flat single axis system is divided into standard flat single axis and flat single axis with dip angle. Under the same platform, the flat single axis ratio of flat single axis with dip angle can increase 5-10%, and the standard flat single axis can achieve 10-15% growth and 18-23% with angle. Therefore, flat and single shaft is the best product from the cost and efficiency of PV power station.

The photovoltaic tracking system brings many benefits to the photovoltaic system. Thanks to the tracking technology, the photovoltaic panel can adjust the angle at any time, and the power station is no longer vulnerable to the disaster weather. In addition, the photovoltaic power station with the tracking system installed can be more closely integrated with agricultural production. It is flexible in the environment of ponds, mountains and wasteland, and has advantages over traditional power stations. The agricultural light and fishing light complementary system can also be installed with a photovoltaic tracking system. The system can realize the complementarity of agriculture, fish ponds and photovoltaics, and realize the maximization of the owner's income under the limited land resources.