INVERSOR SOLAR FOTOVOLTAICO CON FILTRO DE RED SIN INDUCTANCIA

• Main Authors: RODRIGO MANEZ, EUSEBIO, JUAN AGUILAR, JOSUE, SALVO LILLO, ABELARDO, SALVO LILLO, DAVID, CAMPS SORIANO, JOSE LUIS
• Format: Patent
• Language: Spanish
• Published: 03.02.2023
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The present invention discloses a photovoltaic solar inverter with an AC grid filter without inductance connectable to the AC grid. The inverter comprises: a power module for converting a DC input voltage into a three-phase AC output voltage; a three-phase AC/AC transformer for adapting the three-phase AC output voltage of the power module to the three-phase AC voltage of the AC grid, which has an inductance "L2". The three-phase AC/AC transformer comprises a winding on the grid side with an equivalent inductance "L1"; a capacitor "C", connected to the winding of the grid side of the three-phase AC/AC transformer. The equivalent inductance "L1" (L-) of the AC/AC transformer, the capacitor "C" (-C-) and the inductance "L2" (-L) of the AC grid form a high frequency "LCL" filter, eliminating the inductances provided only for forming the LCL filter. The invention also discloses an AC grid filter without inductance with an "LLCL" typology.