摘要
吸收利用制动状态电机回馈再生电能已成为电机系统节能的重要途径。通过分析储能节能系统结构,得出储能系统等效电路;在此基础上建立了用于储能节能系统的双向DC-DC变换器切换系统模型,构造了系统的Lyapunov函数,通过Lyapunov函数推导出系统切换控制律。在储能和放电两种工况下的仿真结果表明,系统能够完全吸收并利用电机回馈电能,保持直流母线电压稳定,实现系统节能。
Recycling of feedback renewable electricity of braking motors is an important approach to save energy. In this paper, the architecture of an energy storage system is analyzed to get the equivalent circuit firstly. Then, the switching system model is established for the bi-directional DC-DC converter of the energy storage system, and Lyapunov function is constructed to get the system switch rules. Simulation result shows that with the control of the switching rules, the model can fully absorb and utilize the feedback electrical energy of the motor, keep DC bus voltage steady, and save system energy.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第3期129-134,共6页
Power System Protection and Control
基金
河南省高等学校青年骨干教师资助计划(2010GGJS-263)
关键词
储能
双向DC-DC变换器
切换系统
建模与控制
energy storage
bi-directional DC-DC converter
switching system
modeling and control
