Hybrid modelling and optimal control of switch-mode dc-dc converters
Hybrid modelling and optimal control of switch-mode dc-dc converters
复制标题
开关模式 DC-DC 转换器的混合建模和优化控制
DOI：
10.1109/cipe.2004.1428141
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Manfred Morari
中科院分区：
文献类型：
--
作者：
G. Papafotiou;Tobias Geyer;Manfred Morari
本文提出了一种新的解决方法，固定频率开关模式直流-直流变换器的最优控制问题，使用混合系统的方法。特别是，N步模型的概念被引入到捕捉这些系统的混合动力性质，并制定了一个最优控制问题，这使得人们可以很容易地将在控制器设计的安全约束，如电流限制。离线求解最优控制问题，得到的显式状态反馈控制器可以存储在一个查找表中，并用于实际实施的控制方案。仿真结果表明了该方法的前景。
This paper presents a new solution approach to the optimal control problem of fixed frequency switch-mode dc-dc converters using hybrid systems methodologies. In particular, the notion of the N-step model is introduced to capture the hybrid nature of these systems, and an optimal control problem is formulated, which allows one to easily incorporate in the controller design safety constraints such as current limiting. The optimal control problem is solved offline resulting in the explicit state-feedback controller that can be stored in a look-up table and used for the practical implementation of the control scheme. Simulation results are provided that demonstrate the prospect of this approach.