摘要
以燃料电池和超级电容组成的混合动力汽车为研究对象,确定了以质子交换膜燃料电池为主要动力源、以超级电容为能量存储系统的混合动力系统.在此基础上,分别给出了燃料电池和超级电容的数学模型,并将它们在选定的最佳工作点处进行线性化处理,构建了混合动力系统的数学模型.对混合动力系统的两个能量源单独处理,根据燃料电池和超级电容自身性能的约束条件,将混合动力系统的能量分配问题转化为燃料电池系统的最优控制问题,并设计了控制量受限的线性二次型终端时间有限状态调节器.仿真结果验证了设计的可行性.
The hybrid power vehicle consisting of fuel cells and super capacitances is taken as the study object. The hybrid power system which consists of proton exchange membrane fuel cell as the main power sources and super capacitance as energy storage system is defined. On this basis, the mathematical models of fuel cell and super capacitance are introduced separately and then linearized around a selected optimal operating point. The mathematical model of the hybrid power system is built. Then the two energy sources of the hybrid power system are dealt with separately. According to the constraints of self performance on fuel cell and super capacitance, the energy distribution problem can be converted into an optimal control problem about fuel cell system. Then a linear quadratic state regulator with finite terminal time and the constrained control input is designed, whose controlling quantity is limited. Simulation results verify the feasibility of the design.
出处
《信息与控制》
CSCD
北大核心
2012年第6期786-792,共7页
Information and Control
基金
国家自然科学基金资助项目(71161016)
