Abstract:
A novel topology of a single phase grid
connected system based on photo voltaic system through
high gain single switch dc to dc Zeta converter is proposed.
In this topology the single phase grid is connected to the
PV system, a Zeta converter and a single phase Voltage
Source Inverter. A new optimized Grey Wolf Optimization
(GWO) is used to extract maximum power from the PV
system. For comparison with the conventional schemes the
proposed topology is modeled with the help of reference
frames w hich includes direct axis and quadrature axis
elements. The GWO based MPPT algorithm shows
excellent performance under various testing conditions and
the outcomes are compared with Fuzzy based MPPT
algorithm. The steady state and transient response of the
controllers are discussed and implemented for their
various operations of the PV fed energy system. The grid
current synchronization is achieved by using PI controller
which reduces the THD, complying with the IEEE
harmonics standard. The proposed system a slo reduces the
power quality issues in the PV based single phase grid
connected system. The results are validated with Matlab
simulation and DSPIC30F2010 controller.
