Robust hamiltonian energy control based on lyapunov function for four-phase parallel fuel cell boost converter for DC microgrid applications

Phatiphat Thounthong*, Pongsiri Mungporn, Serge Pierfederici, Damien Guilbert, Noureddine Takorabet, Babak Nahid-Mobarakeh, Yihua Hu, Nicu Bizon, Yigeng Huangfu, Poom Kumam, Piyabut Burikham

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Rapid developments in hydrogen fuel cell (FC) energy and DC microgrid systems have extended the applications of multiphase parallel interleaved step-up converters for stabilizing DC bus voltages. DC microgrid applications include vehicle systems, shipboard power systems, and more electric aircraft, which generate power at low voltage levels. The cascade architecture of a power converter in a DC microgrid may cause large oscillations and imbalance given that converters considered as loads have constant power load characteristics. In this work, output DC bus voltage stabilization and current sharing of a multiphase parallel-interleaved-FC boost converter is presented. The proposed robust controller with added integrator action is based on the Hamiltonian-Lyapunov function. The efficacy and robustness of the designed controller were successfully authenticated by experimental results obtained using a 2.5 kW prototype FC converter (via four-phase parallel-interleaved boost converters) and the dSPACE MicroLabBox platform. The main source of the FC is based on a fuel reformer engine that converts fuel methanol and water into H2 gas in a polymer-electrolyte-membrane-FC stack (50 V, 2.5 kW).

Original languageEnglish
Article number9321172
Pages (from-to)1500-1511
Number of pages12
JournalIEEE Transactions on Sustainable Energy
Volume12
Issue number3
DOIs
Publication statusPublished - 12 Jan 2021

Bibliographical note

Funding Information:
Manuscript received June 5, 2020; revised October 10, 2020; accepted January 5, 2021. Date of publication January 12, 2021; date of current version June 21, 2021. This work was supported by the International Research Partnerships: Electrical Engineering Thai-French Research Center (EE−TFRC) between Uni-versité de Lorraine (UL) and King Mongkut’s University of Technology North Bangkok (KMUTNB) through the Research Program Cooperation under Grant KMUTNB−64−KNOW−31. Paper no. TSTE-00596-2020. (Corresponding author: Phatiphat Thounthong.) Phatiphat Thounthong is with the Renewable Energy Research Centre, De-

Publisher Copyright:
© 2010-2012 IEEE.

Keywords

  • Constant power load (CPL)
  • electric vehicle
  • fuel cell (FC)
  • interconnection and damping-assignment-passivity-based controller (IDA-PBC)
  • Lyapunov function
  • microgrid
  • multiphase interleaved step-up converter
  • port-Hamiltonian (pH)

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