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DC microgrid fault-tolerant control using state-dependent Riccati equation techniques
Optimal Control Applications and Methods ( IF 1.8 ) Pub Date : 2021-08-24 , DOI: 10.1002/oca.2776
Yazdan Batmani 1 , Mehran Takhtabnus 1 , Rahmatollah Mirzaei 1
Affiliation  

An attempt is made to design a fault-tolerant control system using a nonlinear technique, called the state-dependent Riccati equation (SDRE) method. The proposed mechanism consists of a master controller, an observer-based fault detection and isolation system, and three emergency controllers, designed using the SDRE methods. The master controller, as a suboptimal nonlinear regulator, is designed to return DC microgrid (MG) to its desired equilibrium point in normal operation condition. On the other hand, an SDRE observer is designed to establish a unified framework for fault detection and isolation in the DC MG. Indeed, in the case of unexpected fault occurrence, the proposed mechanism can isolate the faulty DG, and then, the emergency controllers are triggered immediately to stabilize the MG. Simulation results indicate that the proposed method is so useful to achieve the control objectives and online protection of the considered MG.

中文翻译:

使用状态相关 Riccati 方程技术的直流微电网容错控制

尝试使用称为状态相关 Riccati 方程 (SDRE) 方法的非线性技术来设计容错控制系统。所提出的机制由一个主控制器、一个基于观察器的故障检测和隔离系统以及三个使用 SDRE 方法设计的应急控制器组成。主控制器作为次优非线性调节器,设计用于在正常运行条件下将直流微电网 (MG) 恢复到其所需的平衡点。另一方面,SDRE 观察器旨在建立一个统一的框架,用于 DC MG 中的故障检测和隔离。事实上,在发生意外故障的情况下,所提出的机制可以隔离故障 DG,然后立即触发紧急控制器以稳定 MG。
更新日期:2021-08-24
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