燃料电池系统空气供应内模解耦控制器设计

Internal Model Decoupling Controller Design for High Pressure PEMFC Air Supply System

针对高压质子交换膜燃料电池空气供应系统的空气流量和进气压力具有较强的耦合性这个特性,将内模控制原理与多变量解耦控制理论相结合,提出了空气流量和进气压力的鲁棒解耦控制策略.仿真结果表明,采用内模解耦控制不仅能实现被控量的解耦,而且在系统模型失配的情况下可以获得比传统PID(比例-积分-微分)解耦控制器更好的鲁棒性;同时控制器参数少,整定简单.

In view of the strong coupling between air mass flow and back pressure in the air supply system of high pressure proton exchange membrane fuel cell （PEMFC）, a robust decoupling controller that combined the principal of internal model control （IMC） with multiple variable decouple control theory is proposed. The simulation results show that the internal model-decoupling controller can not only provide a nice decoupling, but also get a much better robust performance compared with the traditional proportion- integral-derivative （PID） decoupling controller when the real system does not match well with the nominal model; moreover, the proposed controller is also featured with less controller parameters and easy to be tuned.