Banca de QUALIFICAÇÃO: ALEX FRANCISCO DE SOUSA FERREIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : ALEX FRANCISCO DE SOUSA FERREIRA
DATE: 04/12/2023
TIME: 14:00
LOCAL: por participação remota
TITLE:

Analysis and simulation of the edge-aligned soft switching strategy and verification of the zero voltage switching condition in a two-level three-phase inverter

PAGES: 58
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUMMARY:

This master's work investigated control strategies by changing switching loss reduction in three-phase two-level inverter semiconductor devices. The focus is on an application of the Edge-Aligned Pulse Width Modulation (EA-PWM) strategy, with an adaptation proposal to maintain the cyclic ratio D_add constant, providing greater flexibility and reducing dependence on instant calculations and construction parameters. Simulations were conducted in MATLAB to evaluate both original and adapted systems, collecting data on commutation and inverter output waveforms. Furthermore, simulations of equivalent circuits on the PLECS platform are proposed, with more detailed analysis of the current, voltage and loss surfaces of MOSFET devices, to validate scientific loss mitigation strategies. The results of the MATLAB simulations showed adequate performance for the zero volts switching condition at expected moments of the simulated systems, demonstrating preliminary effectiveness of the adapted strategy in reducing losses. This study represents an initial advance in the validation of proposed strategies for mitigating investment losses. The next steps of the research will be focused on conducting more detailed simulations in equivalent circuits using the PLECS platform, aiming to provide additional data to validate and enhance the proposed control strategies, which could significantly contribute to the advancement of energy efficiency in power conversion systems.

COMMITTEE MEMBERS:
Presidente - Interno ao Programa - 2079380 - JOSE LUIS AZCUE PUMA
Membro Titular - Examinador(a) Interno ao Programa - 1762419 - CARLOS EDUARDO CAPOVILLA
Membro Titular - Examinador(a) Interno ao Programa - 2328639 - ADEMIR PELIZARI
Membro Suplente - Examinador(a) Interno ao Programa - 2129291 - ALAIN SEGUNDO POTTS
Membro Suplente - Examinador(a) Externo ao Programa - 2200473 - JOSE ALBERTO TORRICO ALTUNA