Photovoltaic system and maximum power tracking method of photovoltaic system

Abstract

The embodiment of the present invention relates to the technical field of photovoltaic cell manufacturing, and discloses a photovoltaic system and a maximum power tracking method thereof. The photovoltaic system includes: a plurality of photovoltaic cells, and the photovoltaic cells are used to collect solar energy to generate direct current; Both are used to send electrical parameters to the cloud server, and the electrical parameters include at least the first output parameter of the photovoltaic cell and the second output parameter of the optimizer; the cloud server, the cloud server is used to receive the electrical parameters, and according to the electrical parameters Calculate the characteristic physical quantities used to adjust the output power of the photovoltaic cells, and the cloud server is also used to send the characteristic physical quantities to the optimizer; the optimizer is also used to receive the characteristic physical quantities, and adjust the output power of the photovoltaic cells according to the characteristic physical quantities, so as to realize the photovoltaic cell's output power. Maximum power tracking. The photovoltaic system and the maximum power tracking method thereof provided by the invention can realize efficient maximum power tracking of photovoltaic cells, and improve the accuracy and efficiency of calculating the maximum power of photovoltaic cells.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of photovoltaic cell manufacturing, and in particular, to a photovoltaic system and a maximum power tracking method for the photovoltaic system. Background technique [0002] Solar energy is a clean and efficient renewable energy source. The maximum power tracking (Maximum Power Point Tracking, MPPT) system is a system that adjusts the working conditions of the solar cells, so that the photovoltaic cells can always convert the solar energy into electrical energy output to the greatest extent when the environmental conditions such as light intensity and temperature change. Technology. The MPPT module enables photovoltaic cells to convert solar energy into electrical energy to the maximum extent under different environmental conditions, and whether these electrical energy can be transmitted to the grid or load with the highest efficiency depends on the output voltage, current and other e...

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Problems solved by technology

[0003] The inventor found that there are at least the following problems in the prior art: at present, the MPPT of photovoltaic cells is tracked by the calculation chip inside the optimizer through algorithms, and the main algorithms include disturbance observation method, conductance incremental method, constant voltage tracking method, etc., but All of the above methods will cause internal heating of the optimizer, which will interfere with the computing chip, and then affect the computing accuracy and efficiency of the computing chip.

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