Modeling and simulation of wireless communication based robust controller for multi-converter systems

摘要

Control and stability of power electronic converters is the main issue regarding the secure integration of distributed energy resources into the smart grid. In this paper, a centralized controller for a multi-converter system with a wireless communication channel in the feedback loop is modelled and simulated entirely. The wideband communication system is needed in order to guarantee the flexibility and robustness of the control system in both transient and dynamic performance. Therefore, it should be modelled together with the controller system as a communication-control system. The detailed model of voltage source converters (VSCs) is considered as well as communication system components in order to investigate the stability of power electronics systems in presence of a communication system in the feedback loop of the controller. The communication system elements such as noise, delay, and level of distortion due to quantization are selected to realistically model a practical situation.