Wide-angle concentrated photovoltaic power generating system with wavelength selectivity and method thereof

Abstract

The invention provides a wide-angle concentrated photovoltaic power generating system with wavelength selectivity and a method thereof. Direct light, refracted light and scattered light are fully collected by a curved microlens array and a funnel-shaped light cone at a wide angle, both the refracted light and the scattered light are collimated into light which is perpendicularly incident at a photovoltaic battery, and a rotating mechanism for tracking the sun is saved. A wavelength selecting layer is adopted for selecting wavelengths of the light. The light in a wavelength range causing the photovoltaic battery to warm and radiate heat is filtered, only light in the wavelength range with high response sensitivity to the photovoltaic battery is reserved, and the heat radiation requirement of the photovoltaic battery under concentrated conditions is lowered. The whole system realizes a wide-angle and all-around concentrated photovoltaic function with the characteristics of no sun tracking, no pitch-angle adjustment and optimal wavelength selectivity, and the photovoltaic power generation cost is obviously lowered to that of a common energy level.

Description

technical field [0001] The invention relates to a wavelength-selective wide-angle concentrated photovoltaic power generation system and a method thereof, belonging to the field of concentrated photovoltaic (CPV) power generation in solar energy utilization. Background technique [0002] Solar photovoltaic power generation is a promising new energy source, but the high cost of power generation makes it difficult to popularize and apply photovoltaic power generation on a large scale. There are three main reasons why the cost of photovoltaic power generation is much higher than that of traditional energy sources: the energy density of solar energy is too low; the cost of semiconductor materials and processing costs used in photovoltaic cells is high; and the photoelectric conversion efficiency is low. [0003] In recent years, people have made fruitful efforts to reduce the cost of preparation and processing of photovoltaic materials, and have continued to devote themselves to ...

AI Technical Summary

Problems solved by technology

For existing solar cells, every time the temperature rises by 1 degree Celsius, the power is reduced by 0.35%. The reduction in power is actually the reduction in photoelectric conversion efficiency, which means that the cost is increased.

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