Concentrating photovoltaic power generation system actively equalizing received solar radiation

Abstract

The invention discloses a concentrating photovoltaic power generation system actively equalizing received solar radiation. The system comprises a primary revolution paraboloid concentrating reflector and a secondary revolution paraboloid concentrating reflector. The primary concentrating reflector adopts a concave surface as a reflecting surface, and the central position of the revolution parabolic reflecting surface I of the primary concentrating reflector is provided with a concentrating solar photovoltaic cell module. The secondary concentrating reflector adopts a convex surface as a reflecting surface, and is arranged in the vicinity of a focal point of the revolution parabolic reflecting surface I towards the revolution parabolic reflecting surface I. Incident sunlight is reflected to the revolution parabolic reflecting surface II by the revolution parabolic reflecting surface I and then reflected to the concentrating solar photovoltaic cell module. The system further comprises an automatic adjustment device for a distance between the reflecting surface II and the concentrating solar photovoltaic cell module. The system creatively uses the primary and secondary revolution paraboloid concentrating reflectors between which the distance can be automatically adjusted according to solar radiation conditions to actively equalize the solar radiation received by the concentrating solar photovoltaic cell module, thereby realizing the optimal working condition of the high-power concentrating solar photovoltaic cell module.

Description

technical field [0001] The invention relates to the technical field of photovoltaic utilization of solar energy, in particular to a concentrated photovoltaic power generation system that actively and evenly receives solar radiation. Background technique [0002] Due to the low energy flow density of solar energy and changes with time and seasons, the amount of solar radiation received by the same receiving device at the same place in winter and summer is quite different; for solar photovoltaic power generation systems that supply power to constant loads, summer storage batteries often appear Overcharging and overdischarging of the battery in winter will result in poor reliability of the system. In addition, the relatively low solar energy flux density makes the solar cell modules not reach the rated output during most of the year's operation. Concentrating light can increase the energy flux density incident on the solar cell, thereby increasing the output power of the solar ...

AI Technical Summary

Problems solved by technology

An existing solar panel with a sun tracking device can adjust the orientation angle of the panel by tracking the change of the sun's operation, thereby ensuring energy reception, but this device cannot solve the difference in solar radiation in different seasons, so that the receiver can obtain The amount of solar radiation is not balanced throughout the year, resulting in poor system reliability

[0004] However, for solar receivers using a rotating parabolic concentrating structure, there is currently no device that can actively adjust the amount of solar radiation incident on the receiver while automatically tracking the sun, so that the received light is parallel light and received The amount of solar radiation is relatively balanced throughout the year

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