A complete set of experimental tests on a novel conversion scheme for three-phase grid-connected photovoltaic (PV) generation systems is presented in this paper. The proposed scheme is based on two insulated strings of PV panels, each one feeding a standard two-level three-phase voltage source inverter (VSI). The inverters are connected to grid by a three-phase transformer with the open winding configuration on inverters side. The resulting conversion structure acts as a multilevel converter, doubling the power capability of a single VSI with given current rating. An original control method has been introduced to regulate the dc-link voltages of each VSI, allowing the wholeconverter to inject the PV energy into the grid and to perform as a power active filter.

Experimental Tests on a Multilevel Converter for Grid-Connected Photovoltaic Systems

GRANDI, GABRIELE;ROSSI, CLAUDIO
2008

Abstract

A complete set of experimental tests on a novel conversion scheme for three-phase grid-connected photovoltaic (PV) generation systems is presented in this paper. The proposed scheme is based on two insulated strings of PV panels, each one feeding a standard two-level three-phase voltage source inverter (VSI). The inverters are connected to grid by a three-phase transformer with the open winding configuration on inverters side. The resulting conversion structure acts as a multilevel converter, doubling the power capability of a single VSI with given current rating. An original control method has been introduced to regulate the dc-link voltages of each VSI, allowing the wholeconverter to inject the PV energy into the grid and to perform as a power active filter.
2008
Proceedings of the 11th IEEE Conference on Control and Modeling for Power Electronics, COMPEL 2008.
1
7
G. Grandi; D. Ostojic; C. Rossi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/61753
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