Presentation Details
| MPC-Based Control of Hybrid Battery–Supercapacitor Systems in DC Microgrids Using a Bidirectional SEPIC/Zeta Converter Jhoan A.Montenegro-Oviedo1, Jesus D.Vasquez-Plaza2, Carlos A.Ramos-Paja3, Fabio Andrade1. 1University of Puerto Rico, Mayaguez, PR, USA.2Oak Ridge National Laboratory, Oak Ridge, TN, USA.3Universidad Nacional de Colombia, Medellín, Columbia |
Abstract
This work presents a voltage regulation control strategy for a hybrid energy storage system composed of a battery and a supercapacitor in a DC microgrid. The proposed cascaded architecture combines an external PI-based voltage control loop with internal MPC-based current control loops for each converter. A Filter-Based Method is integrated to dynamically allocate power between the storage devices by separating the frequency content of bus current disturbances. As a result, the supercapacitor compensates high-frequency power variations, while the battery supplies the low-frequency component, reducing battery stress and potentially extending its lifetime. The proposed control strategy ensures effective DC bus voltage regulation and robust dynamic performance under disturbances.
No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.
No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.