Design and Experimental Study of a Novel Two-stage Brushless Hybrid Excitation Synchronous Machine

. A novel two-stage brushless generation system which is based on Tangential / Radial Hybrid Excitation Synchronous Machine (T/R-HESM) is proposed in this paper. The configuration and operation principle are introduced. Meanwhile, a novel two-stage brushless scheme is designed. Comparing with traditional brushless scheme, the problems such as complex system and long axial length can be overcome by novel scheme. In this paper, this novel scheme which can realize complete self-excitation, is introduced in detail and compared with current scheme. In the aspect of excitation system, the exciter is designed. Finally, a prototype is made to verify the correctness and reliability of this novel two-stage brushless scheme by experiment. From above-mentioned study, the application of hybrid excitation synchronous machine is expanded in the areas of aerospace, wind generation and so on.