This article explores and analyzes a perturbation and observation (P&O) algorithm in MPPT with three-phase three-level diode-clamped inverters to track the maximum peak power from a solar PV panel. We also describe the concept of three throw power switch for generation of staircase output voltages and control the switching action of power switches by using SPWM for 3Φ 3-level inverter. Through the MATLAB implementation, we get a three-phase, low-harmonic AC output from the DC input of a PV panel.