期刊
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
卷 57, 期 6, 页码 6754-6764出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2021.3068089
关键词
Topology; Shafts; Magnetic levitation; Force; Inverters; Stators; Bibliographies; Bearingless motor; FEA; high speed; magnetic bearing; magnetic suspension
资金
- Wisconsin Electric Machines and Power Electronics Consortium
This study investigates the use of combined radial-axial magnetic bearing technology as a key component for shafted bearingless motor systems, proposing a new CRAMB topology to meet the needs of high-power bearingless motors. The new design features higher radial force density and a more compact structure compared to conventional designs.
This article investigates combined radial-axial magneticbearing (CRAMB) technology as an enabling component for shafted bearingless motor systems. The unique requirements of high-speed bearingless motors designed for significant power levels are used to guide a literature review on CRAMB designs. Fundamental bearing topology aspects are identified and compared. Based on the outcome of this review, a new CRAMB topology is proposed and developed to meet the needs of a bearingless motor. Key features of the proposed design include a three-pole radial force stage (driven by a three-phase motor drive) and utilization of an optimal bias flux that improves radial force density by approximately 15% (improved rotor dynamics). A full design procedure for the new bearing topology is developed and it is shown that compared to a conventional four-pole side-by-side CRAMB, this topology decreases the bearing shaft length and requires two fewer power electronic switches (6 instead of 8). The new bearing is validated via finite-element analysis and experimental test results.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据