University of Illinois Urbana-Champaign

Characterization of an Electrodynamic Levitator & Design of a Levitator Driver

Zou, Jiarui

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https://hdl.handle.net/2142/110328

Description

Title
Characterization of an Electrodynamic Levitator & Design of a Levitator Driver
Author(s)
Zou, Jiarui
Contributor(s)
Banerjee, Arijit
Issue Date
2021-05
Keyword(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.
Type of Resource
text
Language
en
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http://hdl.handle.net/2142/110328

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