Operation and Control of Soft Switching Solid State Transformer as a Virtual Synchronous Machine for Photovoltaic Application

Vikram Chowdhury, Zheng An, Rajendra Kandula, Deepak Divan

Research output: Contribution to conferencePaper

Abstract

Possibility for control and operation of a three-phase solid state soft switching transformer based as a virtual synchronous machine or synchronverter has been investigated in this paper. The soft switching solid state transformer is used as an interface between the ac grid and a photovoltaic power generation unit supported by a battery bank. The control architecture investigated in this paper is that of a synchronverter to achieve inertial support to the grid and local loads. The operation of the soft switching solid state transformer has also been investigated as a V S M during unbalanced/distorted grid voltage condition. Control objective to achieve oscillation free power transfer between the ports (photovoltaic, battery and grid) has been achieved. The presented architecture has been verified for several important case studies via numerical simulations based on MATLAB/Simulink domain.
Original languageAmerican English
Number of pages6
DOIs
StatePublished - 2022
Event2022 IEEE Energy Conversion Congress and Exposition (ECCE) - Detroit, Michigan
Duration: 9 Oct 202213 Oct 2022

Conference

Conference2022 IEEE Energy Conversion Congress and Exposition (ECCE)
CityDetroit, Michigan
Period9/10/2213/10/22

NREL Publication Number

  • NREL/CP-5D00-85106

Keywords

  • grid current controller
  • Lyapunov
  • S4T
  • soft switching solid state transformer
  • virtual synchronous machine
  • VSM

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