T06.8 - A Current Sensorless Output Voltage Tracking Controller-Observer for a Boost Inverter using Feedback Linearization

Tuesday, March 18, 2025

11:20 AM – 11:40 AM ET

Location: Level Three, A313

Technical Lecture Presenter(s)

Ion Dos Santos, MSc (he/him/his)

Federal University of Santa Catarina

Presentation Paper

Co-Author(s)

YS

Yohannes Scherer

Federal University of Santa Catarina
TO

Tailan Orlando

Federal University of Santa Catarina
Telles Brunelli Lazzarin, PhD

Universidade Federal de Santa Catarina
Federal University of Santa Catarina
HS

Hector Silveira

Federal University of Santa Catarina

This paper presents a new feedback linearizationbased controller-observer for output voltage tracking of a Boost inverter. The nonlinear inductor current estimator proposed has a much lower computational cost than an Extended Kalman Filter, for instance, and it is shown to possess a kind of separation principle with global convergence properties. Experimental results were achieved by emulating a 250 W Boost inverter on a HIL (Hardware-In-the-Loop) platform and implementing the controller-observer on a microcontroller to corroborate the proposed control strategy. The transient performance of the inverter was significantly improved according to previous works of the authors, along with a steady-state output voltage THD reduction from 11.57% to 0.44% at rated power. These results show the viability of the proposed approach for various applications and its potential for further performance and efficiency enhancement.