A Generalized Model and Control for Supermagnetic and Supercapacitor Energy Storage

This paper presents a generalized linear model based on LMI state-feedback with integral action, applicable to the control of Electric Energy Storage Systems (EESS) such as Superconducting Magnetic Energy Storage (SMES) and Supercapacitor Energy Storage (SCES). A Voltage Source Converter (VSC) and a Pulse-Width modulated Current Source Converter (PWM-CSC) are respectively used to integrate the SCES and the SMES systems to the electrical distribution system. To represent the dynamics between the EESS and the power distribution system a reduced general linear model in the state-space representation is introduced. The proposed control scheme regulates independently the active and reactive power ow between the EESS and ac the grid. Three case scenarios comparing a conventional PI controller and the proposed technique are conducted considering grid voltage uctuations. Extensive time-domain simulations demonstrate the robustness and proper performance of the proposed controller to operate the EESS as power compensator, in order to improve the operative conditions of electrical distribution systems.

• Autores: Gil González, Walter Julián; Garcés, Alejandro; Escobar, Andrés
• Fecha de publicación: 2017
• Institución: Universidad EAFIT
• Repositorio: Repositorio EAFIT
• Idioma: eng
• OAI Identifier: oai:repository.eafit.edu.co:10784/13184
• Acceso en línea: http://publicaciones.eafit.edu.co/index.php/ingciencia/article/view/4813; http://hdl.handle.net/10784/13184
• Palabra clave: Electric energy storage systems (EESS); Linear matrix inequality (LMI); Supercapacitor energy storage (SCES); Superconducting magnetic energy storage (SMES); Sistemas de almacenamiento de energía eléctrica (SESS); Desigualdades matriciales lineales (LMI); Almacenamiento de energía supercondensador (SCES); Almacenamiento de energía magnética superconductora (SMES)
• License: Copyright (c) 2017 Walter Julián Gil González, Alejandro Garcés, Andrés Escobar