| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Campinas UNICAMP, Campinas, SP - Brazil
[2] Univ Estadual Paulista UNESP, Sorocaba - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS; v. 24, n. 5, p. 713-722, MAY 2014. |
| Web of Science Citations: | 6 |
| Abstract | |
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) | |
| FAPESP's process: | 10/15848-7 - Research and development of power converters for photovoltaic distributed generation systems |
| Grantee: | Marcelo Gradella Villalva |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 08/07956-4 - Single-phase Micro-inverter for Grid-connected Photovoltaic Systems |
| Grantee: | Jonas Rafael Gazoli |
| Support Opportunities: | Scholarships in Brazil - Master |