Optimal Design of Doubly Fed Induction Generators Using Field Reconstruction Method

Doubly fed induction generator is attracting attention among options in distributed wind energy harvest. Traditional design and analysis of doubly fed induction generator (DFIG) dominantly rely on lump-parameters and finite-element models. Although finite-element analysis (FEA) method is available, the computational time limits its application in iterative optimal design practices. This paper is based on the use of field reconstruction method (FRM) which can greatly reduce the computation cost, whereas maintaining acceptable accuracy. In order to conduct efficiency optimization, the procedure to calculate flux density and core losses are described. Finally, an optimal design method of DFIG towards maximum annual energy production in a given area with available wind speed information is presented.

[1]  Shuhong Wang,et al.  Multilevel Optimization for Surface Mounted PM Machine Incorporating With FEM , 2009, IEEE Transactions on Magnetics.

[2]  S. Soter,et al.  Development of Induction Machines in Wind Power Technology , 2007, 2007 IEEE International Electric Machines & Drives Conference.

[3]  Byung-Taek Kim,et al.  Optimal stator slot design of inverter-fed induction motor in consideration of harmonic losses , 2005 .

[4]  K. Reichert,et al.  Accuracy problems of force and torque calculation in FE-systems , 1988 .

[5]  C. I. McClay,et al.  Optimisation of the geometry of closed rotor slots for cage induction motors , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[6]  E. Dlala,et al.  Comparison of Models for Estimating Magnetic Core Losses in Electrical Machines Using the Finite-Element Method , 2009, IEEE Transactions on Magnetics.

[7]  Sang-Yong Jung,et al.  Optimal Design of Direct-Driven PM Wind Generator for Maximum Annual Energy Production , 2008, IEEE Transactions on Magnetics.

[8]  D. Casadei,et al.  Diagnostic Technique based on Rotor Modulating Signals Signature Analysis for Doubly Fed Induction Machines in Wind Generator Systems , 2006, Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting.

[9]  B. Fahimi,et al.  A field reconstruction method for optimal excitation of permanent magnet synchronous machines , 2006, IEEE Transactions on Energy Conversion.