Application of renewable energies for power sharing and voltage control in DC microgrids using LMI-based mixed H2/hinf state feedback approach

• Payam Aboutalebi ; Aitor J. Garrido Hernández ; Izaskun Garrido Hernandez ; Tahereh Bagheri Rouch ^[1]
  1. [1] Universidad del País Vasco/Euskal Herriko Unibertsitatea

     Universidad del País Vasco/Euskal Herriko Unibertsitatea

     Leioa, España

     
• Localización: WWME 2023 V. Jardunaldia - Itsas energiako sistemen aurrerapen berriei buruzko irakaskuntza-oharrak / Aitor J. Garrido Hernández (ed. lit.), Matilde Santos Peñas (ed. lit.), Izaskun Garrido Hernandez (ed. lit.), 2024, ISBN 978-84-09-58971-5, págs. 44-50
• Idioma: inglés
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• Resumen

  • This article presents a robust optimal control approach for an islanded microgrid. The control structure includes a voltage controller based on mixed H2/Hinf state feedback using linear matrix inequalities and a power controller based on droop characteristics. Due to uncertainties and nonlinearities in the system, a polytopic modelling approach has been used. The proposed controller aims to achieve stability of the closed-loop system, reject disturbances, balance the power among distributed generation units, and minimize energy consumption. In addition, regional pole placement is used to obtain well-damped transient responses. Simulation results demonstrate the effectiveness of the proposed controller in the presence of load perturbation and disconnection of a distributed generation unit. Moreover, the article compares the proposed controller with the Hinf controller.