Closed-Loop Control of a Three-Port Series Resonant Converter

Publikation: Konferenzband/Beitrag in Buch/BerichtKonferenzartikelBegutachtung

Abstract

The three port series resonant converter (3pSRC) is a promising topology especially for grid applications and onboard chargers. It offers galvanic isolation, high efficiency and enables a power dense design via the common multiport transformer structure. Typically, power flow is controlled by means of the switching frequency and/or the relative phase between the excitation of each transformer port. However a unique solution for the optimal combination of control variables for any unique set of port voltages and powers is non trivial. This paper proposes a control loop for naturally approximating such optimal control variables. The mathematical model used for calculating the power flow between the three ports is presented and a method for finding the switching frequency that best balances zero-voltage-switching (ZVS) and high efficiency for a given operation point is given. The control approach is demonstrated with a Silicon Carbide (SiC) based prototype for an on-board charger application.
OriginalspracheDeutsch (Österreich)
Titel2021 IEEE 22nd Workshop on Control and Modelling of Power Electronics (COMPEL)
Seiten1-7
Seitenumfang7
DOIs
PublikationsstatusVeröffentlicht - 5 Nov. 2021
Veranstaltung2021 IEEE 22nd Workshop on Control and Modelling of Power Electronics (COMPEL) - Cartagena, Colombia
Dauer: 2 Nov. 20215 Nov. 2021

Konferenz

Konferenz2021 IEEE 22nd Workshop on Control and Modelling of Power Electronics (COMPEL)
Zeitraum2/11/215/11/21

Schlagwörter

  • Ports (computers)
  • Power measurement
  • Silicon carbide
  • Switching frequency
  • Resonant converters
  • Transformers
  • Loss measurement

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