A phase-shift full bridge converter for the energy management of electrolyzer systems

The purpose of this work has been the development of the supplying system for an industrial electrolyzer. The hydrogen generating device is part of a complex system constituted by a supplying photovoltaic plant, the grid and a fuel cell battery. The main aim of this electrical system is the hydrogen storage devoted to the suitable load supplying in order to obtain an optimum load profile in case of domestic consumers. The converter is linked to a maximum power point tracking (MPPT) algorithm which enables a converter to extract the maximum power from the photovoltaic plant. The energy is supplied to the electrolyzer or the storage system according to the load profile. A phase-shift control strategy has been adopted and the ZVS at turn on driving strategy, in order to increase the efficiency and thus lowering the power consumption for the whole system. The system has been developed looking for the realization of a dedicated integrated circuits utilization where the control strategy has been implemented.