Abstract:
As the demand for electrical energy is increasing, renewable energy sources has
come into popularity especially photovoltaic systems (PV).This seminar report presents
an overview of the power converters that are adopted in Photovoltaic generation sys-
tems. This paper deeply analyses both converter configurations also taking into con-
sideration the control aspects connected to the grid of such systems. In the proposed
model photovoltaic cells are connected in a multi-string manner, then it is boosted up
and connected to common dc bus, in the next stage boosted dc voltage is converted
to ac by inverter. Nowadays micro-controllers are used to control how many PV cells
are to be operated, according to the conditions. Soft switching methods are adopted
in order to shape the rising and falling edges of switches switch current and volt-
age. String conversion configuration based on several DC/DC converters connected
to high voltage DC bus and linked to a single DC/AC converter appear as more
complex solution but offer higher efficiency. MATLAB software is used to simulate
the model. Almost completely, the requisites that make effective any reduction of
energy consumption is based on power electronics.
