分布式光-储发电系统的双向DC-DC非线性控制
发布时间：2018-10-08 07:59
【摘要】：近年来,分布式光-储发电系统正在迅速发展,储能跟踪源-网侧功率指令的能力成为研究热点。首先建立储能系统中非隔离型双向DC-DC变换器在电流连续模式下的仿射非线性模型,并引入电压跟踪参数,得到大信号建模下的非线性状态空间描述;然后,依据状态反馈线性化条件,建立虚拟输出,利用非线性变换映射非线性空间至线性空间,并分析线性空间内二阶经典控制系统的参数对系统性能影响,计算状态反馈系数,完成控制器设计;最后,经数字仿真及实验,证明了所提控制方法可准确、快速地实现功率指令跟踪功能,在电压扰动、负载突变及系统参数不准确等情况下具有强鲁棒性,是正确、有效的。
[Abstract]:In recent years, distributed optical-storage power generation systems are developing rapidly, and the ability of energy storage to track source-network side power instructions has become a hot research topic. Firstly, the affine nonlinear model of the non-isolated bidirectional DC-DC converter in the current continuous mode is established, and the nonlinear state space description under the large signal modeling is obtained by introducing the voltage tracking parameters. According to the linearization condition of state feedback, the virtual output is established. The nonlinear transformation is used to map the nonlinear space to the linear space. The influence of the parameters of the second order classical control system in the linear space on the performance of the system is analyzed, and the state feedback coefficient is calculated. Finally, through digital simulation and experiments, it is proved that the proposed control method can accurately and quickly realize the power command tracking function, and has strong robustness under the condition of voltage disturbance, load mutation and system parameter inaccuracy. It is correct and effective.
【作者单位】： 北京航空航天大学自动化科学与电气工程学院;国网北京昌平供电公司;
【基金】：国家自然科学基金项目(51377007) 高等学校博士学科点专项科研基金(20131102130006) 中央高校基本科研业务费专项资金资助
【分类号】：TM46;TM61
[Abstract]:In recent years, distributed optical-storage power generation systems are developing rapidly, and the ability of energy storage to track source-network side power instructions has become a hot research topic. Firstly, the affine nonlinear model of the non-isolated bidirectional DC-DC converter in the current continuous mode is established, and the nonlinear state space description under the large signal modeling is obtained by introducing the voltage tracking parameters. According to the linearization condition of state feedback, the virtual output is established. The nonlinear transformation is used to map the nonlinear space to the linear space. The influence of the parameters of the second order classical control system in the linear space on the performance of the system is analyzed, and the state feedback coefficient is calculated. Finally, through digital simulation and experiments, it is proved that the proposed control method can accurately and quickly realize the power command tracking function, and has strong robustness under the condition of voltage disturbance, load mutation and system parameter inaccuracy. It is correct and effective.
【作者单位】： 北京航空航天大学自动化科学与电气工程学院;国网北京昌平供电公司;
【基金】：国家自然科学基金项目(51377007) 高等学校博士学科点专项科研基金(20131102130006) 中央高校基本科研业务费专项资金资助
【分类号】：TM46;TM61
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