Design of High-Power Ultra-High-Speed Rotor for Portable Mechanical Antenna Drives

초록

This paper presents the design of high-power ultra high-speed (HP-UHS) rotors of permanent magnet machines for a mechanical-based ULF-VLF antenna (AMEBA) application. Conventional communication system in RF-denied environment (e.g., underground and under seawater facilities) is power demanding with very low efficiency and low power density. Thus, a portable communication system was not available until recently. Such a critical limitation could be overcome by utilizing an HP-UHS motor as a mechanical communication transmitter. This is a first attempt to the best of authors' knowledge. However, unprecedentedly high speed and high-power AMEBA exhibit a new design challenge, including the critical mechanical resonance of the rotor, coupled with wireless communication bandwidth (ULF-VLF). It limits the highest possible efficiency and power density of portable AMEBA systems while achieving a required design safety margin (DSM). In this paper, such critical constraints of HP-UHS rotors are analytically derived and integrated into a design model. This new model will effectively couple electromagnetic, thermal, structural, and rotordynamic analysis for the successful AMEBA rotor design. The proposed approach is applied to design a 2 kW 500 000 r/min rotor considering AMEBA requirements. The effectiveness of the rotor for the AMEBA has been validated through 3-D FEA and experimental testing. IEEE

키워드