Photovoltaic multi-water-pump reachable set estimation and compensation coordination control method

A coordinated control, multi-pump technology, applied in pump control, pump, calculation, etc., can solve problems such as difficulties and outstanding stability of photovoltaic pump systems.

Active Publication Date: 2019-07-12
MINJIANG UNIV
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Problems solved by technology

Due to the nonlinear characteristics of the photovoltaic array, and considering that each pump is affected by different external environmental interference factors, it is very difficult to suppress different external environmental interference with a unified qualitative and quantitative method, which makes the stability of the photovoltaic water pump system more and more serious. more prominent

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  • Photovoltaic multi-water-pump reachable set estimation and compensation coordination control method

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Embodiment Construction

[0128] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0129] Such as figure 1 , 2 As shown, this embodiment provides a photovoltaic multi-pump reachable set estimation and compensation coordinated control method, including the following steps:

[0130] Step S1: Provide a photovoltaic multi-pump physical system model; wherein, the photovoltaic multi-pump physical system model includes photovoltaics, multiple DC / AC converters, multiple water pumps and multiple water pipes; each DC / AC converter All are connected to a water pump; each of the water pumps is connected to a water pipe; the photovoltaic provides electric energy for the plurality of DC / AC converters and the plurality of water pumps;

[0131] Step S2: Establish a nonlinear dynamic model of the photovoltaic multi-pump physical system according to the physical principles and the neutral type II T-S fuzzy model;

[0132] Step S3: Considering that ea...

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Abstract

The invention provides a photovoltaic multi-water-pump reachable set estimation and compensation coordination control method. The method comprises the steps of: building a physical model of a photovoltaic multi-water pump system, and employing a neutral II-type T-S fuzzy method to express the non-linear dynamic state of the system. By taking the consideration of the different factors of each waterpump interfered by the external environment, it is very difficult to inhibit the interference of different external environments by using a uniform qualitative and quantitative method. To solve the problem, an estimator is firstly designed to estimate the interference signal of each water pump, and on the basis, a feedback controller based on compensation is adopted, so that the external interference signals can be eliminated and stable operation can be achieved. According to the actual work conditions mentioned above, the designed photovoltaic multi-water-pump reachable set estimation and compensation coordination control method can eliminate the external interference signals and can achieve the stable work.

Description

technical field [0001] The invention relates to the field of nonlinear control, in particular to a photovoltaic multi-pump reachable set estimation and compensation coordination control method. Background technique [0002] Photovoltaic water pump is a device that uses solar power to provide electric energy to pump water. It is widely used in applications such as remote areas, droughts and water shortages, and floating bodies on the sea. Due to the nonlinear characteristics of the photovoltaic array, and considering that each pump is affected by different external environmental interference factors, it is very difficult to suppress different external environmental interference with a unified qualitative and quantitative method, which makes the stability of the photovoltaic water pump system more and more serious. more prominent. Contents of the invention [0003] In view of this, the object of the present invention is to propose a method for estimating and compensating co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00F04B17/00F04B49/06G06F17/50
CPCH02J3/00F04B17/006F04B49/06H02J2203/20G06F30/20
Inventor 汪星一钟智雄伍文才万芳
Owner MINJIANG UNIV
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