Digital Control of a Three-Phase Four-Leg Inverter to Feeds Non-Linear Loads

Authors

Keywords:

Inverters, Four-leg VSI, output impedance, non-linear loads, IMP

Abstract

This paper presents a new control strategy for three-phase four-leg inverters, to meet the requirements of total and individual harmonic content imposed by IEC 61000-2-2 when the inverter feeds a non-linear reference load defined by IEC 62040-3. The analysis and design of the controllers are based on a discrete-time model, developed in the αβ0 reference frame. The proposed control strategy consists of an inner current control loop and an outer loop to control the phase voltages, using Proportional-Resonant controllers. The concept of harmonic impedance, proposed initially for single-phase inverters, is used to tune the controllers. Simulation and experimental results are presented to validate the harmonic impedance obtained and the design of the proposed control strategy when the inverter feeds non-linear loads

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Author Biographies

Elías Oggier, Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA), Universidad Nacional de Río Cuarto y CONICET

Was born in Río Cuarto, Argentina. He received the Electr. Eng. degree from the UNRC, Argentina (2015). Since 2016 he is a PhD member of the National Scientific and Technical Research Council (CONICET), Argentina, and a member of the Grupo de Electrónica Aplicada (GEA-UNRC) since 2010. His research interest includes, UPS inverters and renewable energy conversion.

Fernando Botterón, Instituto de materiales de Misiones (IMAM), UNAM

was born in Rosario, Argentina. He received the Electrical Engineer degree (1995) from the UNaM, Argentina. Magister (2001) and Doctor (2005) in Electrical Engineering, at the UFSM, RS, Brasil. He is Professor, Director of GID-IE and Researcher of CONICET. His research interest includes: Digital control of UPS and renewable energy conversion.

Jonathan Ochoa Sosa, Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA

was born in San Francisco del Monte de Oro, Argentina. He received the Electronic Eng. degree in 2017 from the Universidad Nacional de San Luis (UNSL), Argentina. Since 2017 he is a Phd member of CONICET, and member in the GEA-UNRC. His research interests include power electronics, microgrids, detection, diagnosis and fault tolerance in power converters.

German Gustavo Oggier, Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA)

(M’10) was born in Río Ceballos, Argentina. He received the Electrical Eng. degree (2003) and M.Sc. degree in Electrical Eng. (2009) from the UNRC, Argentina, and Dr. degree in control systems (2009) from the UNS, Argentina. He is Professor in GEA-UNRC and a researcher of CONICET. His research interests include power electronics, and renewable energy conversion.

Guillermo Oscar García, Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA)

(M’86–S’90–M’95–SM’01) was born in Río Cuarto, Argentina. He received the electrical and electronics Eng. degree in 1981 from the UNC, Argentina, and the M.Sc. and Dr. degrees in Electrical Eng. from the UFRJ, Brazil, in 1990 and 1994, respectively. Since 1994 is the Director of GEA-UNRC, and a Researcher of CONICET. His research interests include power electronics, electric vehicles, and renewable energy conversion.

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Published

2021-06-07

How to Cite

Oggier, E., Botterón, F., Ochoa Sosa, J. ., Oggier, G. G., & García, G. O. (2021). Digital Control of a Three-Phase Four-Leg Inverter to Feeds Non-Linear Loads. IEEE Latin America Transactions, 19(5), 780–789. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/3985

Issue

Vol. 19 No. 5 (2021): Ordinary Issue

Section

Articles

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