Push-pull Converter for High Efficiency Photovoltaic Conversion

AbstractThe energy conversion systems especially dedicated for the conversion of electrical power from solar generators into a grid are analysed. Lot of systems are basically developed on boosters or inverters including electronic switches such as MOS or bipolar transistors. The limits of efficiency are quickly reached when high output voltages and high input currents are needed. After presentation of some usual classical systems, pointing out their advantages and drawbacks, we propose an original system based on a standard push-pull converter associated with a dynamic modulation control. The main advantage of this combination is the possibility to control the delivered electric power in a wide range between very low to high levels within the same basic architecture