Hamiltonian Control Law Based on Lyapunov–Energy Function for Four-Phase Parallel Fuel Cell Boost Converter

Abstract

In this paper, the output DC bus voltage stabilization and the current sharing of a multi-phase parallel interleaved FC boost converter is presented. The proposed robust controller by adding an integrator action is based on the Hamiltonian–Lyapunov function. The effectiveness and robustness of the designed controller have been successfully authenticated by experimental results obtained using a 2.5-W prototype FC converter (by four-phase parallel interleaved boost converters) and a dSPACE MicroLabBox platform. The FC main source system is based on a fuel reformer engine that converts fuel methanol and water into hydrogen gas H2 to a polymer electrolyte membrane FC stack (50–V, 2.5–kW).