Real-time tracking and predicting control method for maximum photovoltaic power point

Abstract

The invention provides a real-time tracking and predicting control method for a maximum photovoltaic power point. The real-time tracking and predicting control method for the maximum photovoltaic power point comprises the following steps of: S1), establishing an environmental factor and a maximum photovoltaic power point function model in a photovoltaic controller, and establishing an output current and voltage mathematical model of the photovoltaic controller for real-time output current in the environmental factor and the maximum photovoltaic power point function model in the photovoltaic controller; S2), establishing photovoltaic controller mathematical modeling and a state space model, and establishing a constraint condition for the photovoltaic controller used for controlling output current; S3), establishing a real-time tracking and predicting target function, and establishing a performance index used for determining the target function; and S4), solving the target function under the constraint condition, and obtaining an optimal control sequence used for tracking the maximum photovoltaic power point. According to the real-time tracking and predicting control method for the maximum photovoltaic power point, which is disclosed by the invention, the real-time model prediction control of the photovoltaic system under the quickly-changed external environment condition can be realized so as to improve the predicting and tracking capability of the maximum photovoltaic power point.

Description

Technical field [0001] The invention relates to the technical field of an optimized control method for photovoltaic power point tracking, in particular to a real-time tracking predictive control method for photovoltaic maximum power point. Background technique [0002] With the emergence of environmental problems and the exhaustion of traditional energy sources, renewable energy sources such as solar energy, wind energy, and tidal energy have attracted more and more attention. Among them, solar energy, as a convenient, environmentally friendly, and efficient new renewable energy source, has broad application prospects , China’s photovoltaic industry has undergone substantial upgrading and expansion. On July 21, 2009, the Ministry of Finance, the Ministry of Science and Technology, and the National Energy Administration jointly issued the "Notice on the Implementation of the Golden Sun Demonstration Project", deciding to comprehensively adopt financial subsidies, scientific and te...

AI Technical Summary

Problems solved by technology

However, in actual operation, sudden changes in the environment have a great impact on the search for the maximum power point, and even search deviations and reduced operating efficiency may occur, and the internal relationship between changes in external environmental parameters and the maximum power point cannot be reflected

Images