Envelope-based modeling for single-phase grid-following and forming converters

Azcondo Sánchez, Francisco Javier; Pigazo López, Alberto; Lamo Anuarbe, Paula; Brañas Reyes, Christian

doi:10.1109/COMPEL53829.2022.9829996

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EnvelopeBasedModeling.pdf (1.409Mb)

Identificadores

URI: https://hdl.handle.net/10902/27496

DOI: 10.1109/COMPEL53829.2022.9829996

ISBN: 978-1-6654-1081-6

Fecha

2022

Derechos

© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Publicado en

IEEE 23rd Workshop on Control and Modeling for Power Electronics (COMPEL), Tel-Aviv, Israel, 2022

Editorial

Institute of Electrical and Electronics Engineers, Inc.

Enlace a la publicación

https://doi.org/10.1109/COMPEL53829.2022.9829996

Palabras clave

Envelope modeling

Phase-locked loop

Grid-connected power converters

Resumen/Abstract

The study of the interaction with the grid, including synchronization, controller design and stability assessment for 1o grid-following (GFL) and grid-forming (GFM) power converters requires an efficient modeling tool to design universal grid-connected converters considering the different grid scenarios. From the initial time-periodic system, approximated linear time-invariant (LTI) models are obtained through dynamic phasors, linearization of variables represented in a virtual synchronous rotating reference frame (RRF) or linearization in the frequency domain, i.e. harmonic linearization. The accuracy and complexity of the obtained model depend on the method used. This work proposes to use the well-known envelope modeling approach used for resonant converters but requiring the time periodic input to generate its related phase synchronization for the model. The result is a simple and accurate LTI model of 1º GFL/GFM power converter for such stability studies. The proposed 1o modeling approach is valid for any application with phase locked loop (PLL) synchronization. Simulation results validating de proposal are provided.