Work

A Nonlinear Observer for Self-Synchronizing Grid-Tied Feeding Inverters

Year: 2024

Type: article

Abstract: This paper proposes a solution for the self-synchronization of grid-tied feeding inverters. Since the proposed algorithm allows the self-synchronization, it avoids using a voltage sensor for measuring the Point of Common Coupling (PCC) voltage. The algorithm is based on an adaptive non-linear observer that uses the measurement of the output inductor current. Unlike synchronization schemes based on the virtual synchronous generator, which is often used in control strategies based on power synchronization, when combined with a non-linear control strategy, the proposed algorithm allows obtaining an excellent dynamic performance, even in presence of large PCC voltage disturbances and fast varying references. The performance of the proposed observer when combined with a non-linear control strategy, designed by considering the non-linear model of the converter, is illustrated through experimental results.

Source: IEEE Transactions on Energy Conversion

DOI: 10.1109/tec.2024.3483490

Authors: Sebastian Gomez Jorge, Jorge A. Solsona, Claudio A. Busada, Gerardo Tapia-Otaegui, Ana Susperregui, M. Itsaso Martínez

Institutions: Consejo Nacional de Investigaciones Científicas y Técnicas, Centro Científico Tecnológico - Bahía Blanca, Universidad Nacional del Sur, University of the Basque Country

Language: English

Topic: Microgrid Control and Optimization

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: green

Funders: Consejo Nacional de Investigaciones Científicas y Técnicas, Eusko Jaurlaritza, Ministerio de Ciencia e Innovación, Universidad Nacional del Sur