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Grade Optimized Mangement Of Energy Uint In Electric Vehicle Charging-discharging-storage Integration Station

Posted on:2014-07-28Degree:MasterType:Thesis
Country:ChinaCandidate:X Y FangFull Text:PDF
GTID:2272330503452710Subject:Electrical engineering
Abstract/Summary:PDF Full Text Request
Electric vehicle battery and power supply device are two key technologies that affect the development of electric vehicles. This paper focuses on optimized management of energy unit in electric vehicle charging-discharging-storage integrated station. The study is conducted from the two technical points. This paper carried out the following work.Firstly, this paper introduces the status and development of electric vehicles energy supply facilities and proposes the detail structure of charging-discharging-storage integrated station. Secondly, the key technologies of battery, such as the operating characteristics, battery model, charging and discharging modes, are introduced. A more accurate and improved equivalent circuit model which can reflect more battery characteristics is proposed. In addition to this, a novel simulation method of multi-information fusion is described in detail. The optimized methods of battery management are researched and a grade optimized charging method of batteries in parallel is the first to be proposed. Then, the energy supply devices are studied in the third part. Five kinds of traditional converter devices are comprehensively introduced in three aspects, including the topology structures, control algorithms and the charging analysis with the simulation of battery model. A three-stage converter for more meticulous charging is creatively put forward as well as hierarchical coordination control strategy of them for the meticulous charging of batteries. The game relation between the battery life and the efficiency of converter device is analysised at last. In the last part, an auxiliary function of charging-discharging-storage integrated station is introduced. And it has positive effect on the operating of the power grid which proved true based on the energy and power theories.
Keywords/Search Tags:electrical vehicle, charging-discharging-storage integration station, equivalent circuit battery model, converter, power system
PDF Full Text Request
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