Collaborative Research: Modeling and Control of Fuel Cell Based Distributed Energy Systems

在这项工作中，我们将建立燃料电池和功率转换器并网运行的模型，并研究系统的稳定性。此外，我们将开发分布式发电系统(DGS)在独立交流电源中并行运行的控制策略，以及仅促进每个发电系统之间低带宽数据通信信号的控制算法。此外，将为每个转换器设计一个使用完美鲁棒伺服机制和离散时间滑模电流控制器的组合电压控制回路，以确保低THD输出电压。电压控制回路将被设计为允许谐波控制下垂方案，以确保适当地分担负载电流的谐波分量。使用两个并联的三相PWM逆变器(600kVA)进行仿真研究，以显示所提出的控制的有效性。控制方法将在OSU 5KVA实验试验台上实施。

In this work, we will develop models for fuel cells and power converters for a parallel grid-connected operation, and study the stability of the system. Furthermore, we will develop control strategy for the parallel operation of distributed generation systems (DGS) in a standalone AC power supply, and control algorithms that will facilitate only low-bandwidth data communication signals between each generation system Furthermore a combined voltage control loop using Perfect Robust Servo-Mechanism and Discrete Time Sliding Mode current controller will be designed for each converter to ensure low THD output voltages. The voltage control loop will be designed to allow a harmonic control droop scheme that ensures proper sharing of harmonic components of load currents. Simulation studies using two parallel three-phase PWM inverters (600 kVA) will be developed to show the effectiveness of the proposed control. The control methods will be implemented at OSU 5 kva experimental test bed.