Simulation of the Influence of Coil Connectionmode on Levitation Control Performance

doi:10.3901/JME.2019.12.149

Abstract

Abstract: In the medium-low speed maglev vehicle, each levitation module contains four electromagnet coils. Generally, two adjacent coils at the module end in series with one controller, which is called control mode of series connection in the 1st and 2nd coils (C12). In order to enhance the levitation performance and improve the problems such as touching the rail and levitation failure in the process of running, many researches start from levitation control system optimization. The external connection mode is started from, and a new type of control mode of series connection in the 1st and 3rd coils (C13) is proposed. Many detailed comparisons of the two modes are made by dynamic and electromagnetic simulation. When passing through the same rail excitation, the results show that the minimum distance between the levitation frame and the rail in C13 is larger than that in C12, that is, farther from the rail; the average current of the controller in C13 is lower. Therefore, considering the safety and coil overheating, C13 performs better than C12. A new type of coil connection mode is proposed and its superiority is proved, which provides a basis for engineering applications.

Key words: air gap magnetic flux density, connection mode, electromagnet, mean value of the current, medium-low speed maglev

CLC Number:

U270

ZHANG Min, MA Weihua, LI Tie, LUO Shihui. Simulation of the Influence of Coil Connectionmode on Levitation Control Performance[J]. Journal of Mechanical Engineering, 2019, 55(12): 149-156.

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