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DOE OSTI · 2562882

A Novel Design for Switchable Grid-Following and Grid-Forming Control

Ding, Huazhao [University of South Florida, Tampa, FL (United States); University of South Florida] (ORCID:0009000752637213)·Kar, Rabi [University of South Florida, Tampa, FL (United States)]·Miao, Zhixin [University of South Florida, Tampa, FL (United States)] (ORCID:0000000156234074)·Fan, Lingling [University of South Florida, Tampa, FL (United States)] (ORCID:0000000246861602)
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Abstract

This paper presents the design of a novel grid- forming (GFM) control structure adapted from a typical grid- following (GFL) control structure with minimal edits, thereby enabling a switchable control structure for voltage sourced converters (VSCs) to operate in either GFL or GFM mode by simply switching a flag manually. The VSC is shown to be able to operate in the GFL control mode synchronizing to the main grid through a phase-locked-loop (PLL) and operate as a GFM controller with power-based synchronization for both grid-connected and islanded conditions. To guarantee smooth operation, the control schemes and the mode switching logic have been carefully designed and examined via a series of experiments. Here, the experiment results show that the switchable control structure can fulfill the desired control and operation functions and enable smooth transition between control modes.

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14 SOLAR ENERGY24 POWER TRANSMISSION AND DISTRIBUTIONVoltage sourced convertersconverter controlgrid integrationgrid-following controlgrid-forming controlislandingsynchronization

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Ding, Huazhao [University of South Florida, Tampa, FL (United States); University of South Florida] (ORCID:0009000752637213), Kar, Rabi [University of South Florida, Tampa, FL (United States)], Miao, Zhixin [University of South Florida, Tampa, FL (United States)] (ORCID:0000000156234074), Fan, Lingling [University of South Florida, Tampa, FL (United States)] (ORCID:0000000246861602). 2024-12-20. A Novel Design for Switchable Grid-Following and Grid-Forming Control. https://doi.org/10.1109/tste.2024.3520989

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