Banca de DEFESA: LUAN ALEIXO CANÁRIO MENDONÇA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LUAN ALEIXO CANÁRIO MENDONÇA
DATE: 20/01/2023
TIME: 15:00
LOCAL: meet.google.com/brw-wydy-qyv
TITLE:

Space Vector Modulation Technique for Leakage Current Attenuation in Grid-Connected Three-Phase Multilevel PV Inverters

KEY WORDS:

Leakage current attenuation, space vector modulation, multilevel inverter, photovoltaic systems, capacitor balance

PAGES: 100
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUBÁREA: Eletrônica Industrial, Sistemas e Controles Eletrônicos
SPECIALTY: Eletrônica Industrial
SUMMARY:

In this work, is proposed a Space Vector Modulation (SVM) based technique for leakage current reduction and capacitor balancing in a grid-connected three-phase multilevel inverter applied to photovoltaic systems. The technique is based on the selection of vector redundancies to ensure the balance and on the definition of a switching sequence that imposes a reduced variation in CMV, in order to decrease the leakage current. The unbalance of the capacitors is limited by a hysteresis band, and its value, together with the direction of the currents of each phase, are used for the appropriate choice of redundancies. In the simulations, a resistor was used in parallel with one of the capacitors of the Direct Current (DC) bus in order to cause a constant disturbance in the balance. The proposed technique preserves the maximum number of levels allowed by the topology in line and phase voltages, thus ensuring reduced values of total harmonic distortion THD. Subsequently, comparisons between the results obtained and other existing techniques are made, pointing out the advantages and disadvantages of each one of them.

COMMITTEE MEMBERS:
Presidente - 1666309 - FABIANO FRAGOSO COSTA
Interno - 3161890 - FILIPE ANTONIO DA COSTA BAHIA
Externo à Instituição - JOÃO PAULO RAMOS AGRA MÉLL - UFRPE
Externa à Instituição - NAYARA BRANDÃO DE FREITAS