Realization and Comparison Two Topologies of a Single-phase Inverter for a Photovoltaic System

Due to environmental conditions it becomes more and more important to apply renewable energies and efficient technologies. For power injection of photovoltaic and fuel cell energy an inverter is needed. First of all the voltage should be stepped up to sufficient level at which the DC/AC conversion can be performed to AC mains voltage requirements. Overall performance of the renewable energy system is then affected by the efficiency of step-up DC/DC converters, which are the key parts in the system power chain. This Paper represent the realization of two inverters, the first one is a inverter with transformer and analog control, the second is focused on high efficiency step-up DC/DC converters with high voltage gain, the control use microcontrollers to implement a pulse wide modulation (PWM). The differentiation is based on the presence or lack of galvanic isolation part hardware and type of control part software. A comparison and a discussion of different (DC/AC) topologies were performed across a number of parameters.