The present study presents two techniques of Maximum Power Point
Tracking (MPPT) via DC/DC converter to enhance the performance of the
grid-connected Photovoltaic (PV) generation system to participate effectively
within microgrids. The two techniques of MPPT are Perturb-Observe (P&O)
and Incremental Conductance (IC). The variation of the solar radiation and
temperature is considered during employing the two MPPT techniques.
Besides, the performance of the system under the random variation of
solar radiation was investigated. The authors used two types of controllers
at the three-phase inverter, Proportional Integral (PI) and H-infinity Control
(H∞C). The output voltage, current, and power at each type of inverter
controller are compared along with the two techniques of MPPT. The effectiveness
of the developed controllers together with MPPT techniques is
demonstrated by comparing the obtained results with some previously
reported research in the literature. In the case of MPPT via P&O and IC
techniques along with the H∞C controller, the results show that the technique
of IC is more robust, and the obtained output power is well matched
with the references one as compared with the P&O technique which records
a 7% error from MPP. Besides, the P&O technique has a high voltage and
current ripple with a percentage of 20% at the starting time of the
simulation.