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Switching control method for charging and discharging processes of super-capacitor

A charging and discharging process, super capacitor technology, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problem of not explicitly considering physical constraints, limitations such as charge amount, etc., and achieve the effect of simple method

Active Publication Date: 2014-07-02
宣城优度科技服务有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These achievements usually focus on the analysis of the mechanism of the energy storage process. At the same time, in the design of the energy storage power configuration controller, the physical constraints of different energy storage units, the limitations of the charge capacity, and the charge-discharge process of each energy storage unit are not explicitly considered. different characteristics

Method used

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  • Switching control method for charging and discharging processes of super-capacitor
  • Switching control method for charging and discharging processes of super-capacitor
  • Switching control method for charging and discharging processes of super-capacitor

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Embodiment Construction

[0031] Referring to the attached picture:

[0032] 1. Dynamic model design of supercapacitor charging and discharging process

[0033] The charging and discharging process is represented by the change of the remaining state of charge of the super capacitor (the state of charge is equal to the remaining power / maximum energy storage capacity), and the dynamic mathematical model of the charging and discharging process of the super capacitor is established by applying the principle of energy conservation, as follows:

[0034] dQ ( t ) dt - σ c Q ( t ) + η c P ( t ) - - - ( 1 )

[0...

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Abstract

A switching control method for charging and discharging processes of a super-capacitor includes the following steps that step1, a dynamic model of the charging and discharging processes of the super-capacitor is designed; step2, charging and discharging model switching of the super-capacitor is designed, step3, a charging and discharging switching controller of the super-capacitor is designed; step4, charging or discharging of the capacitor is executed. The switching control method is concise and easy to use and can be used for guiding actual control over the charging and discharging processes of the super-capacitor.

Description

technical field [0001] The invention relates to a switching control method of a supercapacitor charging and discharging process. Background technique [0002] In the current distributed power grid, the proportion of renewable energy such as wind energy and solar energy is increasing. Due to the intermittent and random nature of the power output power of these energy sources affected by environmental factors, it will cause many adverse effects on the safety and stability of the power system after they are connected to the grid. Usually a certain proportion of static var compensator is allocated to renewable energy to quickly compensate its reactive power and maintain voltage stability at the point where it is connected to the grid. For active power compensation, it is necessary to configure a certain capacity energy storage system on the renewable energy source side . By optimizing the control of the energy storage system and the operation of these energy sources (that is, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 宋秀兰俞立孟利民彭宏
Owner 宣城优度科技服务有限公司