Design and verification of a current source inverter
Stoens, Michael
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https://hdl.handle.net/2142/129348
Description
Title
Design and verification of a current source inverter
Author(s)
Stoens, Michael
Issue Date
2025-05-09
Director of Research (if dissertation) or Advisor (if thesis)
Haran, Kiruba S.
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Power Electronics
Current Source Inverter
Slotless Pmsm
Low Inductance Machines
Total Harmonic Distortion
Bidirectional Blocking
Language
eng
Abstract
The rapid shift toward electrification in various industries necessitates significant advancements in the power density, reliability, and fault tolerance of electric drive systems. This research investigates inverter topologies for driving higher power density in electric motors, particularly slotless permanent magnet synchronous machines (PMSMs), which eliminate iron stator teeth to reduce weight. However, the reduced inductance in these machines introduces challenges for the inverters that drive them. These low inductance machines have rekindled interest in Current Source Inverters (CSIs), which are well-suited for driving such systems due to their inherent ability to maintain a constant input current. This study evaluates different inverter topologies with an emphasis on minimizing total harmonic distortion (THD) in their current waveforms, as well as their related power density and fault tolerance. Challenges associated with implementing a CSI are addressed, and a CSI is designed and tested to use as a benchmark for various inverter topologies.
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