Intelligent photovoltaic assembly capable of preventing hot spot

Abstract

The invention discloses an intelligent photovoltaic assembly capable of preventing a hot spot, which comprises a terminal box, direct-current adjustable transformers, control units and an information processing unit, wherein a plurality of solar cell groups are connected between the positive pole and the negative pole of the terminal box in series; each solar cell group comprises a plurality of solar cells; each solar cell group is connected with other solar cell groups in series through one direct-current adjustable transformer; the control units are connected with all the direct-current adjustable transformers and are used for collecting input voltage information and current information of the direct-current adjustable transformers and adjusting the voltage adjusting rate of the direct-current adjustable transformers according to output current of a system so as to enable the output current of the direct-current adjustable transformers to be the same with the output current of the system; and the information processing unit is connected with all the control units and can be used for calculating the output current of the system according to the information collected by the control units. The whole output power of the intelligent photovoltaic assembly is greater than that of an assembly of a common bypass diode, a shielded battery panel cannot be in an reversed bias voltage state, thereby thoroughly eliminating the hot spot phenomenon, and the assembly has the advantages of being high in output power, safe and reliable and the like.

Description

technical field [0001] The invention belongs to the field of solar energy, and in particular relates to an intelligent photovoltaic module for preventing heat spots. Background technique [0002] Solar cell modules are mostly composed of multiple cells connected in series, and the modules are connected in series and parallel to form an array to achieve the required voltage and current. During the actual operation of the photovoltaic array, the output performance of the array will not match due to the influence of environmental conditions such as clouds, bird droppings, leaves, surrounding occlusions, etc., resulting in power loss of the photovoltaic array and even hot spot effect cause irreversible damage to components. Hot spot effect means that under certain conditions, the shaded solar cell components in a series branch will be used as a load to consume the energy generated by other illuminated solar cell components, and the shaded solar cell components will be Fever, t...

AI Technical Summary

Problems solved by technology

Although this method can improve the power generation of the module to a certain extent, it cannot completely avoid the occurrence of hot spots

[0003] The purpose of the present invention is to solve the problem that the mismatch caused by the photovoltaic array in the actual operation greatly affects the power output of the photovoltaic array, and at the same time eliminates the hot spot effect that may affect the reliability and safety of the components. issues that affect

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