Performance Analysis of 10-MW HTS Wind Generator Based on 2D Transient FEA

A 10-MW class synchronous wind generator with YBCO field windings and MgB2 armature windings was presented. The proposed design was analyzed using a transient finite-element analysis with MAXWELL 14.0. By simulation, the magnetic field of the whole generator and the air gap was obtained. At the same time, the waveform of output voltage, armature current, and electromagnetic torque was shown in the post process. The output power was calculated easily with higher accuracy based on transient analysis. The simulation results showed that the effective length of preliminary model based on 2D steady-state finiteelement analysis could be reduced to 1300 mm and other sizes were optimized, too. The weight and cost of optimized model were all reduced. The harmonic of voltage and current was analyzed by FFT in the post process and the result showed that there was no significant harmonic component both in the voltage and in the current. The loss in stator iron core was calculated and the result showed that the loss was produced mainly by the fundamental current. The analysis showed that the output power and torque were affected by external system resistance. The analysis result showed that the optimized model can work in a wide range of load and rotor speed.