Solar tracker control system based on inverter output power

Abstract

The invention discloses a solar tracker control system based on inverter output power. The system comprises a photovoltaic cell array, a photovoltaic power output unit, a driving source for controlling the photovoltaic cell array to rotate and a motor controller. The system also comprises an inverter and an extreme value searcher. The inverter collects electric power signals of the photovoltaic power output unit, and outputs the collected electric power signals to the extreme value searcher; the extreme value searcher calculates the ideal placing angle of the photovoltaic cell array according to the received electric power signals, and feeds back the angle value to the motor controller; and the motor controller compares the received placing angle of the photovoltaic cell array and the ideal placing angle of the photovoltaic cell array, and controls the driving source to drive the photovoltaic cell array to rotate to the ideal placing angle. The solar tracker control system can obtain the maximum output power of the photovoltaic cell array under different weather conditions through the extreme value searcher, thereby improving generating capacity of the photovoltaic cell array; and the system can be widely applied to the solar tracking field.

Description

technical field [0001] The invention relates to the field of solar tracking, and relates to a solar tracker control system based on the output power of an inverter. Background technique [0002] During the rotation of the earth, the solar photovoltaic power generation system at a fixed location on the surface of the earth is affected by the relative motion of the sun around the earth, resulting in the change of the angle of illumination. [0003] Conventional sun trackers can effectively ensure that solar panels are always facing the sun, so that the power generation efficiency can reach the best state. At present, the working principle of the general solar tracker in the world needs to calculate the angle of the sun at different times of each day of the year according to the longitude and latitude of the placement point, and store the sun position at each time of the year to PLC, single-chip microcomputer Or in computer software, tracking is achieved by calculating the sun...

AI Technical Summary

Problems solved by technology

And this phenomenon will not last long, resulting in the overall level of power generation not increasing, but the power consumption of the tracker becomes larger

Similarly, such control principles are not applicable in all regions or weather

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