Photovoltaic module with self compensating function

Abstract

The invention discloses a photovoltaic module with a self compensating function. The photovoltaic module with the self compensating function comprises a plurality of photovoltaic chipsets, wherein a power compensation circuit is connected in a bridging mode between two ends of the plurality of photovoltaic chipsets after the photovoltaic chipsets are connected in series, and the power compensation circuit is connected with a control circuit. According to the photovoltaic module with the self compensating function, energy is extracted from master output of the photovoltaic module and is supplied to the photovoltaic chipsets which are affected by shadows, and then the working point of the photovoltaic chipsets is changed and electric energy output is restored, and therefore whole output power of the photovoltaic module is improved. Due to the fact that a photovoltaic battery is in a power generating state and energy is not consumed, the energy extracted can still be provided with load, and utilization of the energy extracted is not affected.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic power generation, and in particular relates to a photovoltaic module with self-compensation function. Background technique [0002] Photovoltaic power generation technology, which uses clean solar energy as energy, has received widespread attention worldwide. Scholars from the fields of materials, architecture, power systems, power electronics, and control have devoted themselves to research in the field of photovoltaic power generation, promoting its development and application. At present, photovoltaic power generation has become the second largest power generation method after wind power generation system in installed capacity, and has broad application prospects. It is worth noting that since the power generation unit (usually a photovoltaic module) of photovoltaic power generation technology is small in size, has little pollution and no noise, it is the most ideal distributed power gene...

AI Technical Summary

Problems solved by technology

For the photovoltaic shading problem, the academic community has proposed some solutions to the shadowing problem at the array level and module level; however, the shadow occlusion of the distributed photovoltaic power generation system that plagues the single-module structure is part of the photovoltaic cell chips in the module, and the traditional power optimization The inverter cannot be used because of the need to change the system structure or electrical connection of photovoltaic cells

The photovoltaic cell chipset voltage equalization circuit proposed by some scholars uses multi-stage DC / DC converters to forcibly pull the output of each group to the same value, and cannot really find the maximum power point of the photovoltaic cell module under different partial shading conditions.

Images