Single-axis angle tracking method and system for intelligent photovoltaic module

Abstract

The invention discloses a single-axis angle tracking method and system for an intelligent photovoltaic module, and relates to the field of automatic sun-tracking of a bracket for photovoltaic power generation, and the system comprises a plurality of battery units, a photovoltaic module with a power optimizer, a single-axis tracking bracket and a tracking control module, so that the back shadow of a single battery unit is consistent with the front and rear row shielding; the mutual influence of shadows among the battery units is avoided, the power optimizer enables the assembly to operate at the maximum power, the parameters of the assembly are shared in the tracking control module, and the electric parameter information of the power optimizer is utilized to adjust and control the single-axis tracking support at the optimal tracking angle on the basis of an astronomical algorithm. According to the method, the influence of shadow shielding on power can be reduced, the sunlight incident angle obtains the optimal irradiation amount, then the optimal photovoltaic power generation power is obtained, a single-axis tracking system can be effectively arranged in a large photovoltaic power station, and the purpose of greatly reducing the leveling degree cost is achieved.

Description

technical field [0001] The invention relates to the field of solar-tracking automatic tracking of photovoltaic power generation brackets, in particular to a single-axis angle tracking method and system for an intelligent photovoltaic component with component and substring-level power optimizer functions. Background technique [0002] The mounting bracket structure of photovoltaic power station can be roughly divided into optimal inclination fixed type, sun tracking type and fixed adjustable type. The solar photovoltaic array automatic sun tracking system can adjust the orientation of the components and track the movement of the sun in real time, so that the sunlight directly hits the photovoltaic array, thereby increasing the amount of solar radiation received by the photovoltaic array and improving the overall power generation of the solar photovoltaic power generation system. The tracking type is divided into flat single-axis tracking type, inclined single-axis tracking ty...

AI Technical Summary

Problems solved by technology

There are two tracking methods for astronomical algorithm to track apparent solar trajectory: complete tracking without considering shadow occlusion and shadow turning at a certain angle. The former may cause a relatively large proportion of shadow occlusion of the module and cause power loss of the photovoltaic array, while the latter will make the PV array lose power. The incident angle of the system is too large so that the photovoltaic array will not be in the state of maximum power generation

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