e-Article
A Novel PWM Technique for MPPT Tracking of PV-Based Cascaded H-bridge Multi-level Inverter
Document Type
Conference
Source
2023 IEEE International Conference on Power Electronics, Smart Grid, and Renewable Energy (PESGRE) Power Electronics, Smart Grid, and Renewable Energy (PESGRE), 2023 IEEE International Conference on. :1-6 Dec, 2023
Subject
Language
Abstract
This paper presents a novel Pulse Width Modulation (PWM) technique designed for a Cascaded H-Bridge (CHB) grid-tied multilevel inverter used in Photovoltaic (PV) systems, featuring a single-stage power conversion. Each inverter’s output voltage adopts a quasi-square waveform tailored to correspond with the power generated by the respective solar panel. A key highlight of this technique is its simplicity, avoiding complex implementation. By incorporating the proposed PWM technique into the cascaded H-Bridge inverters, it efficiently optimizes the Maximum Power Point Tracking (MPPT) for each PV panel, regardless of whether the irradiation conditions are uniform or non-uniform, while simultaneously achieving DC capacitor voltage balance. Moreover, employing this PWM technique simplifies the implementation process on a DSP, avoiding unnecessary complexity.