24:T5a4,RENEWABLE ENERGY DEVELOPMENT OF A THREE-PHASE TRANSFORMERLESS INVERTER FOR CONNECTING PHOTOVOLTAIC SYSTEMS TO THE ELECTRICAL GRID 13 JULIAN CEZAR GIACOMINI GENERATING POWER FROM WIND SOURCES IN RIO GRANDE DO NORTE 37 LUZIENE DANTAS DE MACEDO ESTIMATOR OF AVAILABLE ENERGY FOR THE BATTERY BANK OF A MICROGRID BASED ON RENEWABLE ENERGY SOURCES 59 CLAUDIO DANILO BURGOS MELLADO NEW CONTRIBUTIONS TO THE DESIGN OF PHOTOVOLTAIC BUILDINGS FOR SUSTAINABLE CITIES 89 LUIS FERNANDO MULCUE NIETO DEVELOPMENT OF AN AUTONOMOUS MOBILE EMERGENCY SYSTEM FOR WATER PURIFICATION 115 DULCE KRISTAL BECERRA PANIAGUA ENERGY EFFICIENCY DECISION-MAKING SUPPORT METHOD TO IMPROVE ENERGY EFFICIENCY IN RESIDENTIAL BUILDINGS 137 ARTHUR SANTOS SILVA / LAIANE SUSAN SILVA ALMEIDA USER IMPACT ON NATURAL AND ARTIFICIAL LIGHTING SYSTEMS: A CASE STUDY OF CLASSROOMS AT THE UFMG SCHOOL OF ARCHITECTURE 167 CAMILA CAMPOS GONÇALVES ENERGY EFFICIENCY IN THE ELECTRICITY INDUSTRY PLANNING FOCUSED ON CO2 EMISSIONS 185 LUIZ FILIPE ALVES CORDEIRO ENERGY RECOVERY FROM URBAN SOLID WASTE: CASE STUDY IN THE MUNICIPALITY OF ITANHAEM, SAO PAULO 201 LUIZ HENRIQUE TARGA GONÇALVES MIRANDA DEMAND-SIDE MAGANEMENT AND PHOTOVOLTAIC SYSTEMS CONNECTED TO THE GRID AS ENERGY RESOURCES: A CASE STUDY OF THE ELECTRIC INDUSTRY IN NICARAGUA CARLOS GERMÁN MEZA GONZÁLEZ 22525:T790,BRASIL DEVELOPMENT OF A THREE-PHASE TRANSFORMERLESS INVERTER FOR CONNECTING PHOTOVOLTAIC SYSTEMS TO THE ELECTRICAL GRID JULIAN CEZAR GIACOMINI Guidance: Professor Dr. Cassiano Rech ABSTRACT Photovoltaic solar energy has been growing over the last years because it is a renewable and virtually inexhaustible energy source. In this sense, the grid-connected photovoltaic systems are very promising, once that generated energy can be used to supply local loads and the energy excess can be injected into the grid. In the grid-connected systems, the inverter is the element responsible for