Design and Analysis of the Hybrid Power System using PV and Piezoelectric Modules

This paper presents a hybrid renewable power system using PV(Photovoltaic) and piezoelectric device modules. Although, the PV and piezoelectric device module have different input span and maximum power point curve. But, the basic power converter structure is same. For the parallel connection of multi-source power system, the different MPPT(Maximum Power Point Tracking) curves are selected by the input source in the proposed power system. The outputs of two converters are parallel connected to the battery. The charging current of the battery is determined by the separated MPPT curve and the charging curve according to the charge mode to improve the operating efficiency. In the simulation and experiments, the proposed hybrid renewable power system shows the continuous power supply using an additional battery.