Modified SinPWM Algorithm For PV Inverter In Partial Shading Conditions

Abstract

Partial Shading Conditions (PSC) are a common stumbling block to a solar photovoltaic (PV) system's continuous power generation. PSC will reduce the output power of a PV array significantly. This paper proposes a solution for using a Three-level Quasi-Switched Boost T-type Inverter (3L-qSBT2I) single-stage inverter configuration for PV systems with the control algorithms Sine Pulse Width Modulation (SPWM) and Stabilize DC-link voltage algorithm to overcome the voltage drop and output power of the PV system when PSC occurs. The proposed approach will work with all PV connection setups and will eliminate the drawbacks of basic MPPT. The simulation is implemented with the help of PSIM software to demonstrate the accuracy of this strategy.