Host: The Japan Society of Mechanical Engineers
Name : The 15th International Conference on Motion and Vibration(MoViC 2020)
Date : September 09, 2020 - September 11, 2020
This paper discusses the basic study on a cryogenic pump with active magnetic bearings (AMBs) which works in liquid nitrogen (-196 degrees centigrade). The cryogenic pump is composed of two AMBs, four displacement sensors, a permanent magnet (PM) motor, turbine blades, etc. In order to check the passive stability for the rotor, impulse responses for the levitated rotor in the axial direction are performed. The pump flow is measured in the speed range from 2,000 rpm and 4,500 rpm. During the pump performance, the displacement of the rotor in the axial direction is investigated.
