{'fraction_non_alphanumeric': 0.029213483146067417, 'fraction_numerical': 0.006741573033707865, 'mean_word_length': 5.5036496350364965, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Design and electromagnetic-thermal analysis of a 64kW Doubly-sine Wound-Rotor Brushless Doubly-Fed Generator

In order to overcome the defects of low conductor availability ratio and high harmonic contents of the general Brushless Doubly-Fed Induction Generator (BDFIG), the Doubly-sine Wound-rotor Brushless Doubly-Fed Generator (DWBDFG) is designed. In this paper, the rotor winding (RW) design method, including the winding tooth harmonic theory and the doubly-sine winding theory are introduced, and a finite element electromagnetic-thermal model of a 64kW DWBDFG is established to analysis the temperature of the generator in the different steady operation conditions. Finally, the experimental results of the 64kW DWBDFG prototype, which is used as a marine generator, confirmed the analysis consequence and validated the feasibility of the design principle by its actual performance.