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Consistency control method of multiple energy storage systems and control system thereof

A technology of energy storage system and control method, which is applied in the direction of general control system, adaptive control, control/regulation system, etc., can solve the problems of multiple system output controllability control problems, and achieve the effect of improving applicability

Pending Publication Date: 2022-05-24
ZHEJIANG UNIV +1
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  • Claims
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AI Technical Summary

Problems solved by technology

However, due to the dead zone characteristics of the input of some systems, there are control problems in the controllability of the output of multiple systems.

Method used

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  • Consistency control method of multiple energy storage systems and control system thereof
  • Consistency control method of multiple energy storage systems and control system thereof
  • Consistency control method of multiple energy storage systems and control system thereof

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Embodiment Construction

[0046] The invention proposes a consistency control method applied to a multi-energy storage system. By introducing the method of graph theory, the method takes into account the coordination of multiple systems, and realizes that there is no need to know the nonlinear characteristics of the input of the system. Consistency control of energy storage input system for zone characteristics.

[0047] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings:

[0048] Each energy storage system in the multi-energy storage system is a nonlinear energy storage system with dead zone characteristics. Considering the characteristics of the nonlinear multi-system, the mathematical modeling of the multi-energy storage system is firstly performed, as shown below:

[0049]

[0050] y i =x i1

[0051] Among them, i=1,2...,N is the number ...

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Abstract

The invention provides a consistency control method applied to multiple energy storage systems and a control system thereof, and provides a consistency control method based on distributed robustness aiming at the characteristic that the energy storage systems have dead zone nonlinearity. A distributed controller is recursively designed for each energy storage system, so that the output of the distributed controller is synchronized with the output of the adjacent system, and meanwhile, the whole system is kept bounded; it is proved that when the undirected graph is connected, the output of all the energy storage systems is controllable, that is, consistency control over the multiple energy storage systems is achieved, unknown system parameters and dead zone characteristics do not need to be known in advance, and good applicability is achieved.

Description

technical field [0001] The invention relates to a consistency control method and system of a multi-energy storage system, belonging to the cross field of electrical and control system design. Background technique [0002] Since entering the 21st century, multi-system consistent control has attracted extensive attention in the control field. Early research in this field focused on control objects with linear systems. But in practice, the system is uncertain and may be disturbed, in which case the synchronization of the whole system is sometimes unnecessary and impossible. In recent years, with the wide application of energy storage systems represented by batteries and capacitors, the consistency control between energy storage systems has become a research hotspot. Due to the nonlinear characteristics of the input and output of energy storage systems, the problem of output synchronization of nonlinear multi-systems has attracted extensive attention of researchers. [0003] ...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 于淼杨帆徐宏朱重希胡遨洋刘书涵花志伟李鑫
Owner ZHEJIANG UNIV
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