Maximum power tracking method and system based on Taylor formula and terminal equipment

Abstract

The invention provides a maximum power tracking method and system based on a Taylor formula and terminal equipment. According to the method, a nonlinear tracking differentiator constructed by the adoption of a saturation function is utilized, and the Taylor formula is utilized to perform optimization processing on phase delay performance of the nonlinear tracking differentiator, so that the contradiction between a filtering effect and a phase delay effect is solved; and then a conductance increment method is utilized to perform maximum power point tracking, wherein a discrete steepest trackingdifferentiator is added on the basis of maximum power point tracking through a traditional conductance increment method, a disturbance signal is subject to filtering processing, and on the basis of adding the discrete steepest tracking differentiator according to the conductance increment method, the Taylor formula is adopted to improve the efficiency and accuracy of maximum power point tracking.

Description

technical field [0001] The disclosure belongs to the field of automatic control, and specifically relates to a maximum power tracking method, system and terminal equipment based on Taylor formula. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] Recently, with the wide application of new energy technologies, solar energy, as an emerging renewable green energy, has the advantages of no pollution, no noise, huge reserves, and renewable compared with traditional energy sources. application. As a product that uses solar energy as the main energy source, photovoltaic cells have the advantages of cleanliness and durability that traditional batteries do not have. The problems that have always existed in photovoltaic power generation systems are: first, the output characteristics of photovoltaic cells are greatly affected by the external enviro...

AI Technical Summary

Problems solved by technology

The problems that have always existed in photovoltaic power generation systems are: first, the output characteristics of photovoltaic cells are greatly affected by the external environment, such as ambient temperature and external light intensity; secondly, the photoelectric conversion efficiency of photovoltaic cells is very low, and the cost itself is expensive. big investment

The actual working environment of the photovoltaic system has internal disturbances caused by changes in temperature and light intensity and external disturbances superimposed on electrical quantities, so that the existing maximum power point tracking methods have low accuracy and may cause misjudgment or even misjudgment.

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