DC capacitance reduction in three-phase photovoltaic inverters by using virtual impedance emulation
Fecha
2019Versión
Acceso abierto / Sarbide irekia
Tipo
Contribución a congreso / Biltzarrerako ekarpena
Versión
Versión aceptada / Onetsi den bertsioa
Identificador del proyecto
ES/1PE/DPI2016-80641-R
Impacto
|
10.23919/EPE.2019.8915460
Resumen
DC voltage regulation in grid-connected three-phase PV inverters is a fundamental requirement. In order to reduce the influence of the PV non-linear behavior and ensure stability in the whole operating range, the input capacitance in high-power inverters is currently oversized, thus increasing the converter cost. This paper proposes a control method which emulates a virtual impedance in parallel ...
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DC voltage regulation in grid-connected three-phase PV inverters is a fundamental requirement. In order to reduce the influence of the PV non-linear behavior and ensure stability in the whole operating range, the input capacitance in high-power inverters is currently oversized, thus increasing the converter cost. This paper proposes a control method which emulates a virtual impedance in parallel with the PV generator, making it possible to reduce the capacitance by a factor of 5. Simulation results confirm that the proposed control is stable and fast enough in the whole operating range with such a small capacitor. [--]
Materias
Converter control,
Frequency-Domain Analysis,
Photovoltaic,
Renewable energy systems
Editor
IEEE
Publicado en
2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe): Genova, Italy, 2019, pp. 1-9
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC
Versión del editor
Entidades Financiadoras
This work was supported by the Spanish State Research Agency (AEI) and FEDER-UE under grant DPI2016-80641-R. The authors gratefully acknowledge the financial and ongoing support of Ingeteam Power Technology.