Integrated local control of active power and voltage support for three-phase three-wire converters

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The derivation of a robust control algorithm is presented to provide decoupled active power regulation and local grid voltage support in three-phase three-wire grid-connected converters (GCCs). Unlike conventional control schemes, the proposed strategy is designed to be harmonic sequence asym-metric for the purpose of local voltage unbalance correction. A frequency-domain Norton equivalent model is derived to illustrate the working principle of the strategy. Accordingly, by following a frequency-domain decoupled method, the funda-mental positive-sequence, the harmonic symmetrical sequences and the fundamental negative-sequence components are regu-lated independently. Consistent to the model analysis, simulation results validate reduction of local voltage unbalance and total harmonic distortion. Since no external sensors are required for the implementation of the strategy, it is a local approach, applicable to already-existing GCC systems. Moreover, in view of the higher switching frequencies as attainable by devices from the next SiC generation, the accuracy and dynamic behavior of the control algorithms can be much enhanced, improving therefore the quality of the processed energy.
Originele taal-2Engels
TitelIEEE 5th Southern Power Electronics Conference 2019
Plaats van productiePiscataway
UitgeverijInstitute of Electrical and Electronics Engineers
Aantal pagina's6
StatusGeaccepteerd/In druk - 1 dec 2019
Evenement5th IEEE Southern Power Electronics Conference - Santos, Brazilië
Duur: 1 dec 20194 dec 2019
http://www.cobep-spec2019.org

Congres

Congres5th IEEE Southern Power Electronics Conference
Verkorte titelIEEE SPEC 2019
LandBrazilië
StadSantos
Periode1/12/194/12/19
Internet adres

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  • Citeer dit

    Zhang, Y., Tibola, G., Roes, M. G. L., & Duarte, J. L. (Geaccepteerd/In druk). Integrated local control of active power and voltage support for three-phase three-wire converters. In IEEE 5th Southern Power Electronics Conference 2019 Institute of Electrical and Electronics Engineers.