Control module and system capable of realizing Domino type automatic snow melting of photovoltaic modules

Abstract

The invention provides a system capable of realizing Domino type automatic snow melting of photovoltaic modules. The system comprises a controller, the M photovoltaic modules and a photovoltaic powersupply control module; the photovoltaic power supply control module at least has a first working state and a second working state; and in the second working state, when the photovoltaic module connected with a kth photovoltaic interface is in a load mode and the photovoltaic modules connected with first to (k-1)th photovoltaic interfaces supply power to the photovoltaic module connected with the kth photovoltaic interface, k is greater than or equal to 2 and less than or equal to M. The M photovoltaic modules are correspondingly connected with the M photovoltaic interfaces of the photovoltaicpower supply control module; and the controller is connected with the photovoltaic power supply control module and is used for controlling a working state of the photovoltaic power supply control module. The power supply amount is gradually increased, so that the Domino effect is realized, the snow melting efficiency is improved, and the snow melting time is shortened. The system is especially beneficial to the improvement of working time and power generation benefit of photovoltaic power generation of a roof photovoltaic power generation system in a freezing season.

Description

technical field

[0001] The invention relates to the technical field of photovoltaic modules, in particular to a control module and a system capable of realizing Domino-style automation of photovoltaic modules. Background technique

[0002] Such as Figure 14 As shown, the rooftop photovoltaic power generation system deployed in higher latitude areas (such as Canada, Northern Europe, and Northeast China) has a daily average temperature below zero for a long period of time in a year, and often encounters system failure due to snow and freezing. The problem of power generation, while the traditional snow removal method is mainly to remove the snow on the surface of the photovoltaic panel by manual snow removal, salt spraying or spraying snow melting agent. The manual method is not only time-consuming, labor-intensive, and costly, but also poses safety hazards in roof operations. Spraying salt or spraying deicing agents is likely to cause corrosion damage to the photovoltaic mod...

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