Energy management strategy of battery in isolated micro-grid based on state of charge(SOC)
Through the research on modeling and SOC estimation of the battery in the isolated Micro-grid, the behavior characteristics of the battery was analyzed under normal and stable operation, and further more, the condition was determined to guarantee the stability of system based on SOC of the battery. Under the premise of stable operation, a control strategy was put forward based on SOC to adjust the battery charging or discharging. The simulation shows that, compared with the system under traditional control strategy, the security and reliability of the power system is improved evidently. Keywords-Battery SOC Estimation Micro Grid Matlab/Simulink Simulation
Voltage characteristics of Li-ion power battery for EVs
The focus of this research is LiMn_2O_4 Li-ion battery and LiFePO_4 Li-ion battery for electric vehicles in the field of application of power.The voltage characteristics of four kinds of domestic power LIB batteries are tested and researched.The test results show that,there are significant differences on the voltage characteristics between LiMn_2O_4 LIB and LiFePO_4 LIB.Low temperature has the significant influence on LiFePO_4 LIB's voltage characteristics;PNGV model is applicable to the simulation of voltage characteristics when LiFePO_4 LIB is under the dynamic pulse current driving schedule.
Mathematical Simulation of Combustion of Boron Powder Gas Suspension
Based on a two-phase two-velocity model of a reacting gas-dispersed medium, a mathematical model of combustion of a boron powder gas suspension has been formulated. The results of numerical solution of the problem are presented. The influence of the composition of the gas suspension, its size, size distribution of particles, mass concentration of particles, as well as of the presence of aluminum powder in the suspension on the visible and normal velocities of flame propagation in the gas suspension, is shown. A comparison of the results of calculation with the well-known experimental and theoretical data is carried out. Satisfactory agreement of the predicted results with experimental data is shown.