Abstract
The main focus of this paper is to investigate the possibility of using modular multilevel converter based back-to-back system for grid forming applications. A decentralized hierarchical control architecture with a modified local controller based on nonlinear techniques for grid forming application have been investigated. Grid functionalities based on IEEE 1547-2018 for grid forming converters have been utilized. The local controllers ensure distortion free balanced sinusoidal output voltage on the grid forming side with unbalanced or nonlinear loading condition. The grid following side ensures unity power factor currents under unbalanced grid voltage condition. The dc bus voltage control ensures oscillation free voltage under balanced conditions and control of the average voltage under unbalanced condition. Efficacy of the overall system is verified by modeling the system in MATLAB/Simulink and PLECS domain and the most important case studies are presented.
| Original language | American English |
|---|---|
| Pages | 2499-2504 |
| Number of pages | 6 |
| DOIs | |
| State | Published - 2023 |
| Event | Energy Conversion Congress and Expo (IEEE-ECCE) - Nashville, Tennessee, USA. Duration: 29 Oct 2023 → 2 Nov 2023 |
Conference
| Conference | Energy Conversion Congress and Expo (IEEE-ECCE) |
|---|---|
| City | Nashville, Tennessee, USA. |
| Period | 29/10/23 → 2/11/23 |
NREL Publication Number
- NREL/CP-5D00-86921
Keywords
- advanced grid support functionalities
- direct power control
- multilevel converter