Incremental Passivity Control in 7level Cascaded H-Bridge Converters

Abstract: This research presents an advanced evolution of the 7-level Cascaded H-Bridge (CHB) inverter by introducing an 11-level topology integrated with Neural Network-Enhanced Incremental Passivity-Based Control (NN-IPBC). The proposed architecture significantly improves power quality metrics, specifically targeting the reduction of Total Harmonic Distortion (THD) and enhancing the precision of capacitor voltage balancing across five seriesconnected modules. By utilizing a high-density modular topology, the system synthesizes a near-sinusoidal 11step waveform. The NN-IPBC algorithm, executed on an Arduino Mega 2560, provides real-time optimization of energy-shaping parameters to ensure global asymptotic stability and rapid transient response. Experimental validation confirms that the 11-level system achieves a THD of less than 4%, making it highly effective for gridtied renewable energy systems.

Keywords: Cascaded H-Bridge (CHB), 11-Level Inverter, Neural Networks, Incremental Passivity-Based Control (IPBC), Power Quality, THD.