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Micro-inverter for integrated grid-tie photovoltaic module using resonant controller.
- Source :
-
International Transactions on Electrical Energy Systems . May2014, Vol. 24 Issue 5, p713-722. 10p. - Publication Year :
- 2014
-
Abstract
- SUMMARY 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 © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507038
- Volume :
- 24
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- International Transactions on Electrical Energy Systems
- Publication Type :
- Academic Journal
- Accession number :
- 95603067
- Full Text :
- https://doi.org/10.1002/etep.1729