Abstract
DC microgrid applications include electric vehicle systems, shipboard power systems, and More Electric Aircraft (MEA), which produce power at a low voltage level. Rapid developments in hydrogen fuel cell (FC) energy have extended the applications of multi-phase parallel interleaved step-up converters in stabilizing DC bus voltage. The cascade architecture of power converters in DC microgrids may lead to large oscillation and even risks of instability given that the load converters considered as loads feature constant power load (CPL) characteristics. In this article, the output DC bus voltage stabilization and the current sharing of a multi-phase parallel interleaved FC boost converter is presented. The extended Port-Hamiltonian (pH) form has been proposed with the robust controller by adding an integrator action based on the Lyapunov−Energy function, named “Adaptive Hamiltonian PI controller”. The stability and robustness of the designed controller have been estimated by using Mathematica and Matlab/Simulink environments and successfully authenticated by performing experimental results in the laboratory. The results have been obtained using a 2.5 kW prototype FC converter (by two-phase parallel interleaved boost converters) with a dSPACE MicroLabBox platform. The FC main source system is based on a fuel reformer engine that transforms fuel methanol and water into hydrogen gas H2 to a polymer electrolyte membrane FC stack (50 V, 2.5 kW).
Highlights
Polymer electrolyte membrane fuel cell (PEMFC) is a sustainable source of clean and efficient energy production for the present and future generations
An integrator action is added in the extended FC converter model to guarantee that there is no error in the direct current (DC) bus voltage
Control considers that the load was power designed consideration threeand state variables, both inductor currents in multiphase is known is realized through the development ofthe an IDA-Passivity-Based Control (PBC)
Summary
Polymer electrolyte membrane fuel cell (PEMFC) is a sustainable source of clean and efficient energy production for the present and future generations. The first version of the IDA-PBC (Hamiltonian Energy Control Law) for the 2-phase parallel interleaved boost converters (FC converter) was first presented by Mungporn et al [31]. There are two main contributions to this work: An integrator action is added in the extended FC converter model to guarantee that there is no error in the DC bus voltage. This means in the previous work [31] that there are three differential equations (three state variables), while in this work, there are four differential equations (four state variables).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.