Abstract
In this paper, the choices of different design input parameters are investigated to evaluate their effects on the performances of rotor-tied and conventional doubly fed induction generators (DFIGs). The stack aspect ratio, teeth and core flux densities are selected as key input parameters whose choices significantly affect the performance of DFIGs. The secondary side voltages, which affect the secondary side current ratings with possible differences in slot sizes due to conductor type employed is also investigated for the two topologies. Finite element analysis (FEA) is used to evaluate the power densities (PD), power factors and total harmonic distortions (THDs) of different DFIGs designed with varying input design parameters. For each input parameter variation, DFIGs for the two topologies are designed with their performances compared.
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