Abstract

BAUTISTA-LOPEZ, Diego A.; MANTILLA-ARIAS, María P.  and  PATARROYO-GUTIERREZ, Luis D.. Bidirectional DC-AC converter for photovoltaic solar system in Home Electrical Networks. Dyna rev.fac.nac.minas [online]. 2023, vol.90, n.229, pp.51-57.  Epub Apr 03, 2024. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v90n229.108467.

This paper presents the results obtained in the design, implementation and testing of a bidirectional CSI (Current source inverter) converter, which is capable of delivering and taking power from the grid to charge a 72 V battery bank. This converter is sized within a photovoltaic solar system designed for homes in the city of Tunja, based on real data to estimate the average consumption of a typical home in the "Cooservicios" sector of the city, proposing two ways of working the system, one to obtain a constant average consumption and another in which the total consumption is zero. The converter is implemented with all its components, digital and power stages, using for the control a TMS 320F28377S microcontroller from C2000 family, of Texas Instruments. The implementation meets specifications of: bidirectional operation as an inverter and as a rectifier, output power of 469 W, efficiency around 80%, highlighting the considerably high value required for the input inductance of 0.3 H that causes losses in the system.

Keywords : CSI; implementation; efficiency; estimate; inverter; power; rectifier; sizing.

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