Micro-inverter for integrated grid-tie photovoltaic module using resonant controller

Autor(es)

Gazoli, Jonas Rafael ^[1] ; Villalva, Marcelo Gradella ^{[1, 2]} ; Ruppert, Ernesto ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Campinas, SP - Brazil

^[2] Univ Estadual Paulista UNESP, Sorocaba - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS; v. 24, n. 5, p. 713-722, MAY 2014.
• Citações Web of Science: 6

Resumo

Two-stage isolated converters for photovoltaic (PV) applications commonly employ a high-frequency transformer (HFT) on the DC-DC side, submitting the DC-AC inverter switches to high voltages and forcing the use of insulated-gate bipolar transistors instead of low-voltage and low-loss metal-oxide-semiconductor field-effect transistors. This paper shows the modeling, control and simulation of a single-phase full-bridge inverter with HFT that can be used as part of a two-stage converter with transformerless DC-DC side or as a single-stage converter (simple DC-AC inverter) for grid-connected PV applications. The inverter is modeled to obtain a small-signal transfer function used to design the P+Resonant current control regulator, whose main advantages are the simplicity for implementation in single-phase systems and zero steady state error with sinusoidal current. A high-frequency step-up transformer results in low-voltage switches and better efficiency compared with converters in which the transformer is used on the DC-DC side. Simulations and experimental results with a 200-W prototype are shown. Copyright (c) 2013 John Wiley \& Sons, Ltd. (AU)

• Processo FAPESP: 10/15848-7 - Pesquisa e desenvolvimento de conversores eletrônicos para sistemas fotovoltaicos de geração distribuída
• Beneficiário: Marcelo Gradella Villalva
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 08/07956-4 - Microinversor Monofásico para Sistema Solar Fotovoltaico Conectado à Rede Elétrica
• Beneficiário: Jonas Rafael Gazoli
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 10/50101-0 - Conversor eletrônico de potência para sistema fotovoltaico de geração distribuída sem capacitor eletrolítico
• Beneficiário: Ernesto Ruppert Filho
• Modalidade de apoio: Auxílio à Pesquisa - Regular