Photovoltaic system and tracking mechanism thereof

Abstract

The invention discloses a photovoltaic system and a tracking mechanism thereof. The tracking mechanism comprises a stand column, a transmission mechanism and a driver, wherein the driver is fixed on the stand column and is connected with the transmission mechanism; the transmission mechanism comprises a main beam connecting rod, a first supporting rod, a drive connecting rod and a second supporting rod which are sequentially hinged to form a four-rod linkage mechanism; a mounting part used for fixedly mounting a main beam is arranged on the main beam connecting rod; hinge points of the main beam connecting rod and the first and second supporting rods are positioned on both sides of the mounting part separately; and the drive connecting rod is connected with an output end of the driver. The photovoltaic system and the tracking mechanism thereof omit a plastic bearing between the main beam and the stand column, thereby avoiding the influence of short service life and unstable structure of the plastic bearing on the whole set of tracking mechanism; and the photovoltaic system and the tracking mechanism thereof enable a rotating center of the four-rod linkage mechanism to coincide with gravity centers of the main beam and a photovoltaic assembly, thereby avoiding extra torque generated to the main beam by gravity of the main beam and the photovoltaic assembly when the main beam and the photovoltaic assembly rotate.

Description

technical field [0001] The invention relates to system structure design in the field of photovoltaics, in particular to a photovoltaic system and a tracking mechanism thereof. Background technique [0002] Photovoltaic tracking mechanisms are photovoltaic systems that automatically track the sun and improve overall power generation. The automatic tracking mechanism of the solar photovoltaic array tracks the movement of the sun in real time, so that the sunlight directly shines on 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. There are four solar photovoltaic automatic tracking mechanisms that are widely used, including horizontal single-axis tracking, double-column oblique single-axis tracking, vertical single-axis tracking and dual-axis tracking, of which horizontal single-axis tracking and inclined single-axis tracking,...

AI Technical Summary

Problems solved by technology

[0003] The existing tracking support for photovoltaic power generation usually installs the main beam on the column, and the main beam and the column support are provided with plastic bearings, so that the main beam can rotate on the column, and the photovoltaic system is generally used outdoors. The main beam and its plastic bearings Bearings need to bear a certain load, and under the harsh working environment in the field, the plastic bearings on the main beam are prone to aging and wear

Moreover, in the existing photovoltaic power generation system, the center of gravity of the main girder and the photovoltaic module does not coincide with the rotation center of the main girder, which will cause the gravity of the main girder and photovoltaic Beams generate additional torque, which is detrimental to the force of the tracking mechanism

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