摘要
为实现静止稳定电动式磁悬浮,设计了一个旋转磁场电动式磁悬浮装置方案,该装置通过在初级绕组中通入三相交变电流产生圆周运动的交变磁场,与其在次级导体中感应出的涡流磁场相互作用产生悬浮力,能够在装置静止的条件下实现固有稳定的电动式磁悬浮。为准确分析装置特性,建立了悬浮装置的电磁模型,采用多层行波磁场理论方法进行磁场分布求解,求得了装置的等效电路,经过数学推导得到了装置的状态方程,并设计了基于次级磁场定向控制的矢量悬浮控制策略。利用有限元计算和样机实验对磁场分布、等效电路参数和悬浮力控制效果进行了验证,结果证明装置能够实现稳定悬浮运行。
A new maglev device-rotating field electrodynamic levitation is proposed. Rotating magnetic field （RMF） in its air-gap is generated by 3-phase AC current in the primary windings, and the interaction between RMF and secondary eddy current induced by RMF produces lift force. Stable electrodynamic magnetic levitation can be realized while the device is static. In order to analyze the device＇s characteristics, electromagnetic model of this new device is established, multi-layer traveling magnetic field method is applied to solve the magnetic field distribution, and the results are used to calculate T-type equivalent circuit and state equations, designed levitation vector control system based on secondary flux oriented control. FE calculations and experiments are used to verify the field distributions, equivalent circuit parameters and lift force control results.
出处
《电工技术学报》
EI
CSCD
北大核心
2011年第12期1-6,共6页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(51077003,50807004)
教育部博士点基金(20090009110025,200800041040)资助项目
关键词
磁悬浮
磁轮
状态方程
悬浮力
Magnetic levitation, magnet wheel, state equations, lift force
