Photovoltaic-system maximum-power tracking robust control method based on solar irradiance estimation

A technology of maximum power tracking and solar irradiation, applied in photovoltaic power generation, adaptive control, general control system, etc., can solve the problems of inability to guarantee the maximum power tracking effect and lack of quantitative analysis.

Active Publication Date: 2019-06-21
MINJIANG UNIV
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Problems solved by technology

The traditional maximum power tracking control of solar photovoltaic power generation is affected by the changing solar irradiance, which cannot guarantee a good maximum power tracking effect, and most of the proposed control theories lack strict quantitative analysis.

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  • Photovoltaic-system maximum-power tracking robust control method based on solar irradiance estimation
  • Photovoltaic-system maximum-power tracking robust control method based on solar irradiance estimation
  • Photovoltaic-system maximum-power tracking robust control method based on solar irradiance estimation

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Embodiment Construction

[0073] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0074] Please refer to figure 1 and figure 2 , the present invention provides a photovoltaic system maximum power tracking robust control method based on solar irradiance estimation, comprising the following steps:

[0075] Step S1: According to the physical principle, establish the mathematical model of the photovoltaic power generation system with the maximum power tracking problem of solar irradiance, and express it as a singular system model;

[0076] Step S2: According to the obtained mathematical model of the photovoltaic power generation system, construct a feedback controller based on solar irradiance estimation;

[0077] Step S3: According to the feedback controller 50 based on solar irradiance estimation, a solar photovoltaic power generation experimental system 100 is constructed. The solar photovoltaic power generation experimental syste...

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Abstract

The invention relates to photovoltaic-system maximum-power tracking robust control method based on solar irradiance estimation. The method is characterized by firstly, reinterpreting a maximum power tracking problem of an uncertain photovoltaic system under a model framework of a singular nonlinear system; and then, using a T-S fuzzy modeling method, selecting 20 fuzzy sets to blur the uncertain singular nonlinear system, and then acquiring a uncertain singular T-S fuzzy system. Based on that, a photovoltaic-system maximum-power tracking robust controller based on solar irradiance estimation is designed, a non-synchronous problem of a photovoltaic fuzzy system and a feedback controller first component variable based on the irradiance estimation is further considered, and maximum power tracking robust control of the photovoltaic system is realized. In the invention, photovoltaic system irradiance estimate and feedback control are realized, maximum power tracking of the photovoltaic system is achieved, photovoltaic power generation efficiency is increased and the method has a wide market application prospect.

Description

technical field [0001] The invention relates to the field of new energy power generation systems, in particular to a robust control method for maximum power tracking of a photovoltaic system based on solar irradiance estimation. Background technique [0002] With the intensification of environmental pollution, people began to increase the construction of new energy power generation systems. The typical representative of the cleanest energy, the solar photovoltaic power generation system, has high investment costs, so it is very important to ensure its maximum power generation. The traditional maximum power tracking control of solar photovoltaic power generation is affected by the changing solar irradiance, which cannot guarantee a good maximum power tracking effect, and most of the proposed control theories lack strict quantitative analysis. Contents of the invention [0003] In view of this, the object of the present invention is to provide a robust control method for ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/67G05B13/04
CPCY02E10/56
Inventor 钟智雄林文忠汪星一林东亮王炅
Owner MINJIANG UNIV
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