现代电子技术2017，Vol.40Issue(24)：151-153,159,4.DOI:10.16652/j.issn.1004-373x.2017.24.047
户用型微电网恒功率控制方法的研究
Research on constant power control method for household micro-grid
摘要
Abstract
Since the DC bus voltage in optical storage independent micro-grid is easily influenced by the fluctuation of pho-tovoltaic power generation's power and load electrical power,a P-I control strategy is proposed on the basis of the analogy of the V-I droop control. The control coefficient k is used to change the mathematic relation with output power of PV power genera-tion to realize the power balance of the micro-grid,and suppress the fluctuation of the DC bus voltage in the micro-grid effective-ly. By establishing the mathematical models of the PV cell and accumulator,the relationship between the load power and output power of PV power generation is analyzed,the relational expressions of the coefficient k and the light intensity,and the coeffi-cient k and stored energy's charging and discharging current are deduced,and a P-I controller is designed. The Simulink simu-lation results show that the P-I control method can effectively control the power balance of DC bus,and improve the system sta-bility.关键词
户用型微电网/下垂控制/功率平衡/P-I控制Key words
household micro-grid/droop control/power balance/P-I control分类
信息技术与安全科学引用本文复制引用
康家玉,刘甲琛,王素娥..户用型微电网恒功率控制方法的研究[J].现代电子技术,2017,40(24):151-153,159,4.基金项目
陕西省科技厅工业攻关项目(2015GY038) （2015GY038）
