ECE – 590I POWER & ENERGY SYSTEMS SEMINAR
SPEAKER: Soumil Chaubal, Department of Electrical and Computer Engineering , University of Illinois Urbana-Champaign
TITLE: "Continuously-Variable-Pole Induction Machine Drive for Electric Vehicles"
WHEN: Monday, October 28, 2024, 3:00 – 3:50 p.m.
WHERE: ECEB 4070
ABSTRACT: This paper presents an operational methodology for continuous pole sharing in variable pole induction motors (VPIMs) to minimize machine and drive power loss. An optimization problem is formulated to determine torque sharing among poles, revealing that combining two-pole and six-pole components yields minimum losses particularly at intermediate torque-speed operating points. A modulation method that incorporates common-mode voltage injection is introduced to maximize dc bus utilization which along with continuous pole operation is used to push the torque capability of the machine. A proposed control architecture enables one pole to operate under vector control and the other under scalar control, thereby reducing parameter dependence for synchronization and reference generation. The proposed approach supports dynamic loss minimization using the dc bus current and by varying the scalar-controlled pole magnitude. Experimental results conducted on a toroidally wound 36-slot machine validate the effectiveness of the proposed approach.