Abstract:
This seminar report proposes a PV fed buck boost converter combining KY con
verter and synchronously rectifier converter. Both the converter uses same power
switches. As the demand for electrical energy is increasing, renewable energy sources
has come into popularity especially photovoltaic systems (PV). PV can act as a volt
age source which act as input to the proposed buckboost converter. Basic circuit
has no control loop, for more efficiency and to reduce harmonic distortion added a
feedback controller. THD was reduced by 45 percent. Using the control loop, we can
achieve the desired output. The transfer function analysis of such converter shows
that it has no right half plane zeros, so that stability is increased. Since both the
converter uses the same power switches correspondingly the cost is reduced and also
the circuit is made compact. Simulation has been carried out to study the perfor
mance of the proposed topology in MATLAB/SIMULINK environment. Simulation
results analysed and results presented for circuit.
