Work

Hybrid control system for cascaded H-bridge multi-level inverter based shunt active filter for photovoltaic generation

Year: 2024

Type: article

Abstract: This article presents a hybrid controller developed for a Shunt Active Filter (SAF) with Photovoltaic (PV) generation Structure. This structure, referred to as (PV-SAF/CHB-PN), uses a Multi-Level Inverter (MLI)-type-Cascaded H-Bridge (CHB) to realize several aspects: i- Increase the apparent switching frequency. ii- Generate approximately sinusoidal output voltage. iii- Minimize the output filter size. The hybrid controller, implemented via Petri Nets (PNs), optimizes the dispatch commitment among the H-Bridge modules and the arms of each modules. Thus, to compensate for perturbations, while generating the MPPT pf the PV panels , a PN current controller combined with a new analytical Hysteresis control approach, is employed. Meanwhile, a PN voltage controller balances the DC voltages across of the MLI-CHB inputs and achieves a practical stability using the Lyapunov method . The PV generators are integrated, via DC/DC converters, into the DC side of the SAF. Hence, Model Predictive Controller based Perturb and Observe (MPC-Based P&O-MPPT) algorithm optimizes the MPPT extraction without drift phenomena. Finally, a case study for textile factory using real measurements via power quality analyzers, demonstrates the effectiveness of 3 CHB modules structure in mitigating harmonic impacts of the main textile machine of (SL-50 kVA), validating the hybrid controller, and integrating green energy.

Source: Electric Power Systems Research

DOI: 10.1016/j.epsr.2024.111248

Authors: Nabil Karania, Mohamad Alaaeddin Alali, Stefano Di Gennaro, Jean-Pierre Barbot