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Jude-Kennedy Obichere

Postgraduate Research

Jude -kennedy -obichereIn this research work, a novel model reference adaptive control (MRAC) algorithm for optimum operation of the brushless doubly fed reluctance generator (BDFRG) – a viable, low cost and robust alternative to its widely-used counterpart, the conventional slip-ring doubly-fed induction generator (DFIG), has been introduced and evaluated by comprehensive simulation studies and experimental validation under typical operating conditions. Such vector control implementation, in addition with power factor control (PFC) and maximum power factor (MPF) for control of real and reactive power to ascertain the machine efficiency, can serve as a platform for further research on this emerging and prominent brushless machine topology for applications in large wind turbines and industries, where the cost advantages of partially-rated power electronics and high reliability of brushless structure can be fully utilized. This is a major step towards a universal controller for doubly-fed machines and this work has not been reported or published anywhere.

Supervisors

  • Dr. Milutin Jovanovic
  • Dr. David Zhiwei Gao 

Key Publications

  1. J. K. C. Obichere and M. Olubiwe, “Climate Change – Promoting the Use of Renewable Energy Worldwide,” International Journal of Engineering Research & Technology (IJERT), vol. 2 Issue 11, pp. 2206-2213, November 2013.
  2. S. Ademi, M. Jovanovic and J. K. Obichere, “Control of Brushless Doubly-fed Reluctance Wind Generators,” International Symposium: Grid of the future systems (CIGRE), Boston, USA, October 2013.
  3. S. Ademi, M. Jovanovic and J. Obichere, “Reactive Power Control of Grid-Connected Brushless Doubly-Fed Reluctance Wind Generators,” 11th International Conference on Modelling and Simulation of Electric Machines, Converters and Systems (ELECTRIMACS), Valencia, Spain, May 2014.
  4. S. Ademi, M. Jovanovic and J.K. Obichere, “Comparative analysis of control strategies for large doubly-fed reluctance wind generators,” Lecture Notes in Engineering and Computer Science: Proceedings of the World Congress on Engineering and Computer Science 2014, WCECS 2014, 22-24 October, 2014, San Francisco, USA, pp.245-250.
  5. Milutin Jovanovic, Sul Ademi and Jude K. Obichere, “Comparisons of Vector Control Algorithms for Doubly-Fed Reluctance Wind Generators,” Transactions on Engineering Technologies World Congress on Engineering and Computer Science 2014, By Springer, pp. 85 – 99.
  6. Jude K. Obichere, Milutin Jovanovic and Sul Ademi, “Power Factor Control of Large Doubly-Fed Reluctance Wind Generators,” Lecture Notes in Engineering and Computer Science: Proceedings of The World Congress on Engineering and Computer Science 2015, 21-23 October, 2015, San Francisco, USA, pp210-215.

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