| With the rapid development of society and the progress of science and technology, energy consumption increases continuously and the energy crisis has gradually become all issues of common concern in the whole world. New energy will be the inevitable developing trend of the future due to its renewability.however, it still far cannot satisfy the demand of the society, due to its many defects its in utilization, technology and reliability. In fact, due to the influence of objective factors such as technology, energy efficiency is generally low, most of the energy is wasted.Therefore, Research for a high cost performance of energy storage system is of extremely important significance for the sustainable development of society.Battery and super capacitor are complementary in the performance each other, if both will mix, in theory, energy storage system composed of them will greatly improve the storage performance.Based on the analysis of the domestic and foreign about the establishment system and control algorithm of the energy storage, battery-super capacitors in parallel control system based on two kinds of DC power converter is designed, and a kind of energy storage system optimization control strategy based on fuzzy algorithm is also put forward.then Then its modeling and simulation is finished in matlab/simulink.The main work in this paper is as follows:(1)The importance of energy storage is analyzed. The research status about the energy storage system at home and abroad is summarized, battery-super capacitor hybrid energy storage system on the energy storage performance of a huge advantage is pointed out.At the same time, the necessity of the application about the fuzzy control algorithm in hybrid energy storage system is also pointed out.(2)The super capacitor energy storage principle and excellent energy storage performance is detailed introduced, and compares the advantages and disadvantages of all kinds of battery performance is alsocompared.Then it points out the possibility and necessity of the lead-acid battery and super capacitor hybrid energy storage system. This paper introduces the fuzzy control principle and the specific application in hybrid energy storage system.(3)Battery-super capacitors in parallel control system based on two kinds of DC power converter is designed,and the super capacitor energy storage principle and relevant working principle of the power converter is also introduced. The super capacitor group matching scheme is calculated and determined, and the equivalent mathematical model of hybrid energy storage system is established. (4) Based on fuzzy control principle and the relevant mathematical theory, the numerical value of each parameter is computed in system simulation, andthe of the fuzzy controller for hybrid energy storage system is designed,then hybrid energy storage system of the whole simulation model was established. The modeling and simulation of hybrid energy storage system is finished in matlab/simulink. the simulation and experimental results show that the accuracy of the hybrid energy storage system structure design and the effectiveness of the control algorithm. Finally experimental verification is finished. |
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