旋转磁场电动式磁悬浮装置的状态方程与悬浮力控制

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Abstract 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.

Key words： Magnetic levitation magnet wheel state equations lift force

Received: 10 November 2010 Published: 10 March 2014

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