2026-09-21T14:08:47Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/130070 2026-02-10 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

application/pdf en text Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01 The student, Soumil Chaubal, accepted the attached license on 2025-07-25 at 00:52. The student, Soumil Chaubal, submitted this Thesis for approval on 2025-07-25 at 00:55. This Thesis was approved for publication on 2025-07-25 at 09:16. DSpace SAF Submission Ingestion Package generated from Vireo submission #22734 on 2025-10-21 at 10:06:21 Continuously-variable-pole induction machine drive for electric vehicles Chaubal, Soumil Kishor 2025-07-25 Banerjee, Arijit Torque Modulation Minimization Magnetic Materials Vectors Synchronization Vehicle Dynamics eng This thesis presents a comprehensive framework for implementing continuously variable pole (CVP) operation in variable pole induction machines (VPIMs) to minimize combined machine losses while improving magnetic material utilization. An optimization-based approach is developed to determine torque sharing among multiple pole sets across the torque–speed plane. Results demonstrate that coordinated operation of two-pole and six-pole components significantly reduces losses, particularly in the intermediate speed range, and expands the usable torque–speed envelope. To realize this in practice, a control architecture is proposed that achieves flux synchronization and compared to one in which both the poles are operated independently. The proposed methodology is validated through experimental studies on a custom 36-slot toroidally wound VPIM driven by an 18-leg GaN inverter. The results confirm the feasibility of dynamic torque sharing and highlight the potential of CVP operation to meet the performance and efficiency demands of modern electric vehicle traction systems. Finally, a representative city‑drive‑cycle study benchmarks the proposed CVP strategy against conventional discrete‑pole operation, quantifying its practical efficiency advantage. 2025-08 Text https://hdl.handle.net/2142/130070 Copyright 2025 Soumil Chaubal Electrical & Computer Eng Electrical & Computer Engr University of Illinois Urbana-Champaign M.S. Thesis