Modeling and Digital Control of a High-Power Full-Bridge Isolated DC- DC Buck Converter Designed for a Two-Stage Grid-Tie PV Inverter

Author(s)

Nascimento Filho, Paulo Sergio ; de Oliveira, Leonardo Ruffeil ; dos Santos Barros, Tarcio Andre ; Villalva, Marcelo Gradella ; Ruppert Filho, Ernesto ; IEEE

• Document type: Journal article
• Source: 2014 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE); v. N/A, p. 6-pg., 2014-01-01.

Abstract

This paper describes a grid-tie photovoltaic (PV) inverter composed of an isolated full-bridge buck DC-DC converter with high-frequency transformer and a cascaded DCAC full-bridge inverter connected to the grid. Emphasis is given on the modeling and digital control design of the DC-DC converter with the polynomial pole placement method. Simulation results are presented and a inverter prototype is currently being built. (AU)

• FAPESP's process: 12/04872-0 - Study and development of power control techniques for swichted reluctance generators applied for wind energy systems
• Grantee: Ernesto Ruppert Filho
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/18066-8 - Research and development of electronic converters and control techniques for energy processing of photovoltaic generation systems
• Grantee: Ernesto Ruppert Filho
• Support Opportunities: Regular Research Grants