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Lead-acid battery fuzzy control method based on SOC state estimation

A lead-acid battery and state estimation technology, which is applied to electrical components, circuit devices, AC network circuits, etc., can solve the problems of different internal characteristics of lead-acid battery charging and discharging, and difficulty in SOC state estimation

Active Publication Date: 2019-07-23
MINJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the non-linearity of lead-acid batteries and the different internal characteristics of charge and discharge, it is difficult to estimate the SOC state of the lead-acid battery.

Method used

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  • Lead-acid battery fuzzy control method based on SOC state estimation
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  • Lead-acid battery fuzzy control method based on SOC state estimation

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Embodiment Construction

[0070] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0071] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0072] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...

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Abstract

The invention relates to a lead-acid battery fuzzy control method based on SOC state estimation, and the method comprises the steps: building a physical model for the charging and discharging switching of a micro-grid lead-acid storage battery, and employing a neutral II type T-S fuzzy method to express the nonlinear dynamic state of the system. Considering that the energy storage state of the lead-acid storage battery is very important for the stable work of the micro-grid. And an SOC state estimator is designed for the energy storage state problem of the micro-grid lead-acid storage battery.Thus, correct estimation of the energy storage state is achieved, a feedback controller is designed, and stable operation and performance of the system are guaranteed. The SOC state estimator is designed by considering the real working conditions, so that the energy storage state is correctly estimated, and the stable operation and performance of the system can be ensured.

Description

technical field [0001] The invention relates to the field of storage battery state estimation, in particular to a fuzzy control method for lead-acid batteries based on SOC state estimation. Background technique [0002] Microgrid, as an effective means of connecting distributed power sources to the grid, has enabled the rapid development of the clean energy power generation industry. In order to maintain the stability of the micro-grid power, it is necessary to use the battery to cut peaks and fill valleys. Lead-acid batteries are the best products for energy storage in the Energy Internet because of their low price, easy availability of raw materials, reliable performance, easy recycling, and high-current discharge. The SOC state estimation of lead-acid batteries plays an important role in maintaining the stable operation of the Energy Internet more efficiently. Due to the non-linearity of lead-acid batteries and the different internal characteristics of charge and discha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28H02J3/32
CPCH02J3/28H02J3/32H02J2203/20
Inventor 汪星一钟智雄黄伟雄黄修丹傅珊珊
Owner MINJIANG UNIV