A comparative analysis of the new excitation controlled synchronous generator-based wind turbine

Excitation Controlled Synchronous Generator-based Wind Turbine (ECSG WT) is a recently proposed Wind Turbine (WT) scheme that has not been fully investigated in detail. This paper intends to analyze the performance of the ECSG WT scheme and compare it with those of two mainstream WT schemes based on electrically excited synchronous generator, i.e., VSC-based full converter WT and diode bridge rectifier-based WT equipped with boost converter on its Direct Current (DC) link. The objective of this comparison is to demonstrate great potentials of ECSG WT to be considered in the wind industry. To do so, two successful Wind Turbine (WT) schemes in the market that are structurally close to ECSG WT are selected. The comparison includes different technical and economic aspects of the three schemes, assuming the DC grid connection for the WTs. In addition, another comparison is made between the recently introduced Siemens 2nd-generation DC grid access offshore wind farm and a wind farm with a similar structure using ECSG WTs. The results of these comparisons show that the ECSG WT scheme enjoys promising characteristics in economic, reliability, and efficiency terms. (C) 2022 Sharif University of Technology. All rights reserved.