What is it about?
The drive system of the LIM operating in the non-periodic transient condition is different from that of the traditional one, because the front stage of the inverter is usually used as an energy storage device, and the dc-link voltage will drop during the operation of the motor. On the other hand, the rate of thrust decay will increase as the LIM dynamic end effect becomes more serious due to a rise in its speed. To deal with the above two problems, this paper proposed a thrust optimization control strategy to realize the high-speed operation of the LIM.
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Why is it important?
Aiming at the operational characteristics of a six-phase LIM under high-speed non-periodic transient condition, we proposes a thrust optimization control strategy which can be adopted to overcome the serious thrust decay caused by dynamic end effect and the narrowing of voltage limits caused by dc-link voltage drop when the LIM runs at high speed. The proposed control strategies are useful for optimizing the thrust in the transient process thus to realize the high-speed operation of the motor.
Perspectives
I hope that through this article, readers can understand the difference between the transient motor system and the traditional steady-state motor system, and I hope to provide some useful ideas for the high-speed operation control strategy of the transient linear induction motor.
Yi Han
Read the Original
This page is a summary of: Control Strategy for Optimizing the Thrust of a High-Speed Six-phase Linear Induction Motor, IET Power Electronics, April 2020, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/iet-pel.2019.1334.
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