Solar maximum power point following control detection system

Abstract

The invention discloses a solar maximum power point following control detection system which comprises two photoresistors and two sensors. One of the two photoresistors is sleeved with a thin light-proof tube, and the other of the two photoresistors is arranged open; the two sensors are arranged on a motor driving flat plate in parallel; the open type photoresistor is used for measuring an environmental basic value, a platform is driven by a motor to form an angle with incident sunlight due to the existence of the thin light-proof tube, so that the two sensors generate large signal difference;a comparison threshold value of the photoresistor sleeved with the tube is set through the environmental light intensity measured by the open type photoresistor. The system can solve the defects of an existing scheme, is relatively simple and lower in manufacturing cost, and solves the problem of tracking the maximum power point of solar energy through skillful management in sensor arrangement.

Description

technical field [0001] The invention relates to the field of solar energy utilization, in particular to a solar maximum power point following control detection system. Background technique [0002] At present, the solar maximum power point following solutions are divided into two categories, one is an open-loop system without detection, and the other is a closed-loop system that detects the sun's incident angle. [0003] The open-loop system is to calculate the relationship between the maximum incident angle and time by calculating the latitude of solar equipment installation and the topographical characteristics of the installation site by using the position relationship between the sun and the earth to form a set of data lists. The control chip controls the solar equipment to turn and follow through the table lookup method. This type of solution is prone to accumulated errors and increases the correction workload of operation and maintenance personnel. [0004] There are ...

AI Technical Summary

Problems solved by technology

Since sunlight is parallel light in a relatively small area of ​​the earth, the difference in light received by the sensors distributed on the flat panel is extremely small, and the control effect of this scheme is poor due to the influence of sensor accuracy; the other is through the rotation process of the photosensitive element Different signal values ​​are measured to search for the maximum power point through the multi-peak MPPT algorithm, but this method is difficult to search for the maximum power point under the condition of continuous changes in the environment (clouds, flying birds, etc. will make the incident light power change quickly)