Light-gathering wind and light complementary power station with automatic sun tracking function and maximum power point tracking function

Abstract

The invention relates to a light-gathering wind and light complementary power station with an automatic sun tracking function and a maximum power point tracking function, which comprises a light-gathering device, a photovoltaic cell array device, a tracking driving device, a photovoltaic controller with a maximum power point tracking function, and a wind generating set, wherein the light-gathering device and the photovoltaic cell array device comprise a frame consisting of a Fresnel lens light-gathering device array and a photovoltaic cell array respectively; the tracking driving device comprises an intelligent control system for driving the light-gathering device and the photovoltaic cell array device to move in a sun-tracking manner, and a mechanical control and transmission device; the photovoltaic controller with the maximum power point tracking function consists of a voltage sampling circuit, a current sampling circuit and a microprocessor in which a multiplier and a comparator are arranged; and the wind generating set consists of a wind-driven generator and a wind turbine controller. The light-gathering wind and light complementary power station has high automation degree, light weight and high photoelectric conversion efficiency. By adopting the photovoltaic controller with the maximum power point tracking function, the investment cost of photoelectric power generation can be greatly lowered, and the power generating efficiency is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic wind power generation, and relates to a fully automatic, high-efficiency, and low-cost photovoltaic wind power generation device, in particular to a solar-focusing automatic tracking maximum power point tracking wind-solar hybrid power station. Background technique [0002] In recent years, great progress has been made in the research and application of solar photovoltaic power generation, and solar photovoltaic power generation has become a new industry with far-reaching significance that has attracted global attention. However, because solar energy has the characteristics of intermittent, uncertain intensity and direction, it brings certain difficulties to the collection of solar energy. In addition, due to its long investment recovery period and low photoelectric conversion efficiency, there are still certain difficulties in large-scale promotion. How to improve the efficiency of solar pho...

AI Technical Summary

Problems solved by technology

Although this seems to reduce the cost, it also reduces the power generation efficiency, so that the photoelectric conversion cost per unit area of ​​the photovoltaic cell is very high, thus causing the high cost of photovoltaic power generation and losing the economic advantage of competing with other energy sources

[0004] In addition to the above-mentioned general structural schemes, there are currently a few solar photovoltaic power generation equipment that use a single-axis tracking sun scheme, that is, to fix the height angle of the battery panel at an optimal angle, and use a motor to drive the vertical axis to rotate the battery panel array horizontally to track the sun. The power generation efficiency of the scheme has been improved, and the efficiency is about 10% higher than that of the fixed azimuth angle; in addition, a small number of solar photovoltaic power generation equipment adopts the scheme of dual-axis tracking the sun, that is, using the motor to drive the battery panel array to track the sun at the azimuth angle, and at the same time use the motor to track the sun. Drive the solar panel array to track the sun at an altitude angle. This solution can also greatly improve the power generation efficiency; in addition, another way to increase the solar density is to use concentrators to gather sunlight into a small range, thereby improving For the energy density of sunlight, take the JTD solar concentrating photovoltaic power station produced by a domestic company as an example. It makes the concentrating solar cell into a large-area overall module device, and the automatic tracking control device controls it according to the required direction. Rotate to track the sun, although this improves the utilization efficiency of solar cells, but due to the weight of the module, the bulky size makes the tracking cost very high, which is obviously an inefficient and expensive way

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