Evaluating Grid Support Features of Voltage Source Inverter: an Analysis of Direct Power Control

EasyChair Preprint 10916, version 2

Abstract

This paper presents the dynamic modeling of a voltage source inverter (VSI) grid-connected system with high-performance direct power control (DPC) functions. The system is modeled in the stationary reference frame to reduce complexity and make it linear time-invariant, enhancing control flexibility. The DPC is introduced to achieve fast reference tracking and decoupling regulation of grid active and reactive power injection. Simulation results demonstrate that the DPC exhibits a fast dynamic response and adaptable to changes in grid parasitic elements, even under weak grid conditions with short-circuit ratio of 1.8. The insights and discussions provided in this paper will be valuable for researchers, engineers, and professionals in the industry working on VSI-grid integration and developing control strategies.

Keyphrases: Direct power control, Grid, short circuit ratio, voltage source inverter

@booklet{EasyChair:10916,
  author    = {Chikezie Emeghara and Satish Mahajan and Ali Arzani and Ejikeme Amako},
  title     = {Evaluating Grid Support Features of Voltage Source Inverter: an Analysis of Direct Power Control},
  howpublished = {EasyChair Preprint 10916},
  year      = {EasyChair, 2023}}