Smart Grids and Sustainable Energy Systems

Operation and control of Doubly-Fed Induction Generator Wind Turbine (DFIG-WT)
Wind turbines are playing a major role in renewable power generation in the UK. The
electrical generator system is one of the core parts in a wind turbine. Using information
gathered from a minimum of 8 different sources/references (e.g. books, journal papers,
company websites, etc...), write a report that identifies the operating principles,
characteristics and application of the DFIG-WT. Use any appropriate/available software (e.g.
MATLAB) wherever applicable within your report. Your report should discuss the following
points (aided with solid graphs, plots, tables, and numerical data):
• Introduction to the structure and operation of a generic wind turbine system.
• The major types of electrical generator used in wind turbines and their typical ratings.
• The operational principles of Permanent Magnet Synchronous Generator (PMSG).
• The operational principles of Double-Fed Induction Generator (DFIG).
• Provide comments and concise explanations on the strengths and weaknesses of
PMSG and DFIG in terms industrial implementations.
• Operation of the DFIG-WT in super-synchronous and sub-synchronous modes as
well as the point of zero slip.
• Fault ride through capability of DFIG-WTs and its operation under AC faults.
The report should be limited to 2500-3000 words.
The report should provide evidence of the following:
• Professional presentation and structure of information
• Evidence of background reading and correct use of relevant reference material, sources
used should be identified in the manner shown in IEEE journals
• Technical description and critical evaluation of the power electronics and its application
• Relevance and accuracy of arguments
• Relevant conclusions