Start-up of modular three-stage SST

  1. Saeed Hazkial Gerges, Mariam 1
  2. Cuartas, José María
  3. Rodríguez Alonso, Alberto 1
  4. Arias Pérez de Azpeitia, Manuel 1
  5. Briz del Blanco, Fernando 1
  1. 1 Universidad de Oviedo
    info

    Universidad de Oviedo

    Oviedo, España

    ROR https://ror.org/006gksa02

Actas:
XXV Seminario Anual de Automática, Electrónica Industrial e Instrumentación 2018 (SAAEI'18)

Editorial: Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE)

ISBN: 978-84-947311-2-9

Año de publicación: 2018

Congreso: Seminario Anual de Automática, Electrónica Industrial e Instrumentación 2018 (SAAEI'18), (25. 2018. Barcelona, España)

Tipo: Aportación congreso

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Resumen

This paper discusses the start-up of modular threestage Solid State Transformers (SSTs) based on a cascaded Hbridge (CHB) topology. Auxiliary Power Supplies (APSs) are used to feed the auxiliary circuitry from the cells DC link. Since DC links need to charge to a certain threshold voltage to power the APSs, then first steps of the start-up must be performed before APSs are operative and consequently without measurements and control. This can result in undesirable events, e.g. inrush currents, voltage sags in the capacitors voltages, etc. In this work a start-up scheme for the SST is proposed. The procedure is valid for both grid-forming and grid-feeding SST operation modes. Simulation and experimental results are provided.

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Información de financiación

This work was supported by the Spanish Government under projects DPI2014-56358-JIN and MINECO-17- DPI2016-75760-R and by the European Commission FP7 Large Project under grant UE-14-SPEED-604057.

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