Analysis and Preliminary Experimental Study of Eight‐Phase Air‐Core Pulsed Alternator

ABSTRACT Pulsed alternators exhibit multifunctional capabilities, including inertial energy storage, energy conversion, and pulse shaping, rendering them a crucial class of pulse power sources. The development of air‐core and multiphase structures represents a prominent trend in pulsed alternator technology. This paper focuses on the investigation of an eight‐phase air‐core pulsed alternator, analyzing its electromagnetic characteristics and its ultimate current output capability. First, an analytical calculation model is established to determine the electromagnetic parameters. Subsequently, an in‐depth discussion elucidates the analytical relationship between the pulsed alternator's ultimate output capability and its intrinsic parameters, clarifying the factors influencing the output current capability. Second, a three‐dimensional field‐circuit coupled finite element analysis model is constructed to analyze the magnetic field distribution characteristics and output characteristics of the pulsed alternator. Finally, a multiphase pulsed alternator experimental platform is constructed, and preliminary experimental research is conducted, laying a theoretical and experimental foundation for the optimization design and engineering application of pulsed alternators.