【摘 要】
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Due to the requirement for long lifetime and high rotating speed,an active magnetic bearing in this paper is designed for a 30 kW,60 000 rpm permanent magnet machine.The electromagnetic distribution c
【机 构】
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School of Automation Science and Electrical Engineering,Beijing University of Aeronautics and Astron
论文部分内容阅读
Due to the requirement for long lifetime and high rotating speed,an active magnetic bearing in this paper is designed for a 30 kW,60 000 rpm permanent magnet machine.The electromagnetic distribution characteristics of the active magnetic bearing are analyzed under the static levitation and the maximum bearing capacity using 2D finite element method.Aiming to large error problems of the calculation of the rotor critical speed,this paper presents a model updating method to establish the finite element model of the rotor assembly.The calculated results of the first two bending critical speeds are verified by the modal testing.The errors of the first two bending critical speed are 3.2%and 1.8%,respectively.
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