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A switching control method for supercapacitor charging and discharging process

A charging and discharging process, supercapacitor technology, applied in the direction of battery circuit devices, current collectors, electric vehicles, etc., can solve the problems that do not explicitly consider physical constraints, charge limits, etc.

Active Publication Date: 2016-07-06
宣城优度科技服务有限公司
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  • Summary
  • 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

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  • A switching control method for supercapacitor charging and discharging process
  • A switching control method for supercapacitor charging and discharging process
  • A switching control method for supercapacitor charging and discharging process

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Embodiment Construction

[0031] Refer to the attached drawings:

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

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

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

[0035] dQ ( t ) dt = - σ d Q ( t ) + P ( t ) η d - - - ( 2 )

[0036] Among them, formula (1) represents the dynamic model of the charging process, formula (2) represents the dynamic model of the discharge process, t represents the time of charge and discharge (min), Q represents t...

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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 super capacitor charging and discharging process. Background technique [0002] In the current distributed grid, the proportion of renewable energy such as wind energy and solar energy is increasing. Because the output power of these energy sources is intermittent and random due to environmental factors, it will cause many adverse effects on the safety and stability of the power system after they are connected to the grid. Generally, a certain percentage of static reactive power compensator for renewable energy can quickly compensate its reactive power and maintain the voltage stability at the grid connection. For active power compensation, a certain capacity energy storage system needs to be configured on the renewable energy source side . By optimizing the control of the energy storage system and the operation of these energy sources (that is, the power configuration of the energy storage system),...

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Application Information

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Patent Type & Authority Patents(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