2026-09-20T15:10:22Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/120431 2023-09-05 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Haran, Kiruba Sivasubramaniam 2023-05 application/pdf en text Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01 The student, Junhan Zhao, accepted the attached license on 2023-04-26 at 22:05. The student, Junhan Zhao, submitted this Thesis for approval on 2023-04-26 at 22:12. This Thesis was approved for publication on 2023-05-01 at 14:55. DSpace SAF Submission Ingestion Package generated from Vireo submission #19206 on 2023-09-01 at 17:15:13 2023-05-01 Sensorless Control Ipmsm T-type Inverter Svpwm Sensorless control of an interior permanent magnet synchronous motor with a three level t-type inverter Zhao, Junhan An encoder or resolver is widely utilized for the rotor position and speed feedback in permanent magnet synchronous motor control. However, these sensors sometimes increase the system’s cost, size, and complexity. Sensorless control is an alternative strategy, which estimates the rotor position and speed through multi-physical parameters. However, sensorless control requires less harmonic distortion in the motor current and voltage, leading to a large power filter, which further increases the system’s size. Therefore, an advanced power electronics typology with less THD is also critical for high accurate sensorless control motor system. Another challenge for sensorless control is the transition between open-loop starting from zero speed and closed-loop control. An unceremonious transition will lead to motor nonalignment and generate significant vibration. The experimental prototype consists of a three-level T-type inverter and a high-power IPMSM, which demonstrated a smooth transition between the open-loop control and closed-loop sensorless control with a speed error of less than 5rpm and an accurate sensorless closed-loop control with an error of less than 1rpm, with the help of a flux linkage observer. Text eng https://hdl.handle.net/2142/120431 Copyright 2023 Junhan Zhao M.S. Thesis Electrical & Computer Engr University of Illinois at Urbana-Champaign Electrical & Computer Eng