Ride-through capability of grid-connected brushless cascade DFIG wind turbines in faulty grid conditions-A comparative study
Abstract
Doubly-fed induction generator (DFIG)-based wind turbines (WTs) are reported to suffer reliability problems due to the presence of slip-rings, brushes, and the gearbox. These disadvantages encouraged several research groups to investigate the viability of employing single or double-frame brushless cascade DFIGs (BCDFIGs) in grid-connected multimegawatt WTs especially offshore and in solar chimney power plants. In this regard, this paper tackles three main issues. Initially, the expected reduction in gear ratio when BCDFIGs are used instead of DFIGs is examined from a steady state perspective. A reduction would lead to less frequent maintenance and an improved return on investment. Next, a detailed comparison between DFIG-WTs and BCDFIG-WTs under unbalanced grid voltage is presented. Finally, the extent to which a multimegawatt BCDFIG-WT is grid code compliant in terms of fault ride-through capability is studied. This is illustrated by comparing and quantifying the response of a DFIG-WT and a BCDFIG-WT to a severe three-phase voltage dip. Simulation and experimental results indicate promising behavior for BCDFIGs during disturbances.
Collections
- Electrical Engineering [2611 items ]
Related items
Showing items related by title, author, creator and subject.
-
A comprehensive review of the cyber-attacks and cyber-security on load frequency control of power systems
Mohan, A.M.; Meskin, Nader; Mehrjerdi, H. ( MDPI AG , 2020 , Article Review)Power systems are complex systems that have great importance to socio-economic development due to the fact that the entire world relies on the electric network power supply for day-to-day life. Therefore, for the stable ... -
A power control strategy for flywheel doubly-fed induction machine storage system using artificial neural network
Abdel-Khalik, A.; Elserougi, A.; Massoud, Ahmed; Ahmed, S. ( Elsevier Ltd , 2013 , Article)A large-capacity low-speed flywheel energy storage system (FESS) based on a doubly-fed induction machine (DFIM) consists of a wound-rotor induction machine and a back-to-back converter rated at 30-35% of the machine power ... -
A stationary frame current control for inverter-based distributed generation with sensorless active damped LCL filter using Kalman filter
El-Deeb, H.M.; Elserougi, A.; Abdel-Khalik, A.S.; Ahmed, S.; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)Due to the large variety of renewable power sources, power electronics play an important role in energy conversion. Different power converter topologies are used to interface distributed power generation systems (DPGS) ...