Photovoltaic panel automatic snow device and control method thereof

Abstract

The invention discloses a photovoltaic panel automatic snow-melting device and a control method thereof. The photovoltaic panel automatic snow-melting device comprises a photovoltaic array and a grid-connected bidirectional inverter. The device further comprises a controller. A pressure sensor is arranged on the photovoltaic panel of the photovoltaic array. The input end of the controller is connected with the pressure sensor so as to collect an accumulated snow pressure signal. The output end of the controller is connected with the grid-connected bidirectional inverter so as to control the bidirectional conversion between the direct current and the alternating current. According to the technical scheme of the invention, the pressure sensor is arranged on the photovoltaic panel of the photovoltaic array, and the accumulated snow pressure signal is collected and tested. Meanwhile, the bidirectional conversion between the direct current and the alternating current is controlled by the grid-connected bidirectional inverter. In this way, not only the problems that the power generation of a photovoltaic system is influenced by the accumulated snow on the photovoltaic panel and a photovoltaic power station can not be built in snowy places can be effectively solved, but also the ice problem during the snow melting process of a photovoltaic shed can also be solved. Therefore, the safety of finished cars can be ensured and the power generating efficiency is improved. The device can be applied to various photovoltaic arrays in large photovoltaic power stations.

Description

technical field [0001] The invention relates to a photovoltaic power generation device and a control method thereof, in particular to a photovoltaic panel automatic snow device and a control method thereof. Background technique [0002] Traditional snow removal methods mainly use artificial snow removal, salt spraying or snow melting agent to remove snow on the surface. [0003] Manual snow removal is common and easily accomplished on surface roads. However, snow removal in photovoltaic power generation devices, especially in photovoltaic carports (with a slope of 10 degrees), not only requires climbing but also is difficult to remove snow. The labor cost is high, and the snow removal efficiency is low; the snow removed is easy to accumulate, which affects the movement of finished vehicles in the warehouse area. [0004] Sprinkling salt or spraying snow melting agent on the snow will have a certain effect per unit area. However, due to the large photovoltaic array area of ...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an automatic snow device for photovoltaic panels and its control method, which can not only effectively solve the problem of snow on photovoltaic panels affecting the power generation of photovoltaic systems and the construction of photovoltaic power stations in many areas during the snow season, but also solve the problem of photovoltaic power generation. The problem of icing when the carport melts snow ensures the safety of the finished car and improves the power generation efficiency; it can be applied to various photovoltaic arrays of large-scale photovoltaic power plants

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