Rotor Design and Actual Test of an Elemental Rotor Prototype of a 24kr/min High-Speed Motor with Oil Jet Lubrication

Abstract

This report presents a rotor design and actual test of a 24kr/min high-speed motor considering its centrifugal force, rotor dynamics, and bearing lubrication method. Consequently, applying a rotor structure with two bridges and tail barriers causes the analyzed maximum principal stress at 24kr/min of 346MPa to be smaller than the yield stress of 400MPa. The actual test of an elemental prototype was conducted to validate the proposed design. The experimental results indicate that there were no resonance points up to 24kr/min, the maximum vibration amplitude of the 1N component was 8µm, and the minimum mechanical loss was 1.78kW at 24kr/min when the lubricant was 50°C and 1.3L/min.