Current-source converters (CSCs) are a good candidate for the series-connected wind energy conversion system (WECS). However, the existing CSCs either exhibit poor generator stator current harmonics, require bulky low-frequency transformers, are limited in their application to synchronous generator-based wind systems, or necessitate complicated modulation and commutation. In this work, a new CSC is proposed and investigated. It features a unique hybrid structure consisting of a modular medium-frequency transformer-based voltage-source converter on the generator side and a conventional CSC on the grid side. The proposed converter offers superior generator stator current harmonics performance, a smaller size, simplified modulation and commutation schemes, and suitability for both synchronous and induction generator-based wind systems compared with the existing converters. In addition, all the advantages of the existing CSC-based WECS are retained. The proposed converter is discussed and analyzed, its control scheme is introduced, and its performance is investigated by both simulations and experiments.
No takes yet. Share an insight, caveat, or question.
Xing et al. (2023) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: