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Title:Characterization of an Electrodynamic Levitator & Design of a Levitator Driver
Author(s):Zou, Jiarui
Contributor(s):Banerjee, Arijit
Degree:B.S. (bachelor's)
Subject(s):Electrodynamic Suspension
Bedford Levitator
Multiple-Winding Magnetic Model
Inverter Design
Two-level Bipolar Active Multi-phase Buffer
Abstract:This thesis reports on the construction of a magnetic levitator that can suspend metal objects in the air freely without the assistance of any mechanical constraint. The classic Bedford levitator topology was used to levitate a metal sheet with 6-axis stabilization using the principle of electrodynamic suspension. The levitator was hand-built from scratch, characterized, and then modeled using the extended cantilever model. Few assumptions were incorporated into the model to help the modeling process. A driving circuit comprised of a two-phase 4-legged PWM inverter was designed and simulated. The inverter was constructed and tested. Various passive and active buffering methods were explored for double harmonic power decoupling. Methods of inrush current suppression were also simulated and are discussed here. The inverter was tested for various operating frequency, phase differences, and amplitude.
Issue Date:2021-05
Genre:Dissertation / Thesis
Date Available in IDEALS:2021-08-17

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