Practical Utility PV Multilevel Inverter Solutions

TL;DR

This paper compares two multilevel cascaded PV inverter designs using different modulation techniques, analyzing their power quality, component stresses, and the number of levels needed for desired performance.

Contribution

It introduces a comparative analysis of two modulation techniques for cascaded PV multilevel inverters, including design and simulation insights.

Findings

PhaseShifted PWM reduces component stress.

Nearest Level Control requires fewer inverter levels.

Simulation confirms improved power quality with chosen configurations.

Abstract

Multilevel inverters are used to improve powerquality and reduce component stresses. This paper describesand compares two multilevel cascaded three phase inverterimplementations with two different modulation techniques: PhaseShifted Pulse Width Modulation, and Nearest Level Control.Further analysis will show required number of inverter levelswith respect to modulation techniques to provide desired powerand power quality to resistive load or grid. Cascaded inverterwill be designed and simulated to draw power from PV cells.