Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

You searched for +publisher:"University of Michigan" +contributor:("Sebastian, Tomy"). One record found.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters

1. Ramakrishnan, Rajavenkitasubramony. Rotor Position and Phase Inductance Estimation of Permanent Magnet Synchronous Machine Using PWM Excitation.

Degree: PhD, College of Engineering & Computer Science, 2018, University of Michigan

This thesis provides rotor position estimation and online inductance estimation using the PWM signals used for motor control. The position estimation technique provides an alternative rotor position information that enables to eliminate the backup position sensor hardware needed for safety critical applications. The sensorless position estimation using PWM based excitation provides the methodology to obtain the position information without influencing the motor performance such as audible noise and torque ripple. The techniques provided can be utilized for online estimation of inductance parameters. These inductance parameters are needed in the reference current calculation in a typical motor control scheme. An Extended Kalman Observer is proposed to enhance inductance and position estimation. Fast sampling of motor phase current is needed to calculate the current slope in the PWM excitation scheme for position and inductance estimation. This thesis provides a methodology of fast current sampling using the microcontroller without sacrificing the processor throughput time. A method to improve the accuracy of the current slope calculation is also provided. This thesis also analyzes the effect of position sensor errors on the performance of the permanent magnet motor drive. The error has significant influence on the motor torque ripple. A mathematical analysis and experimental verification at different operating conditions is provided in this thesis. Advisors/Committee Members: Wang, Mengqi (advisor), Hofmann, Heath (committee member), Jayaraman, Tanjore (committee member), Kim, Taehyung (committee member), Sebastian, Tomy (committee member), Su, Wencong (committee member).

Subjects/Keywords: Pulse width modulation (PWM) excitation; PMSM/IPMSM; Rotor position estimation; Stator inductance estimation; Sensorless estimation; Automotive Systems Engineering

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Ramakrishnan, R. (2018). Rotor Position and Phase Inductance Estimation of Permanent Magnet Synchronous Machine Using PWM Excitation. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/145174

Chicago Manual of Style (16th Edition):

Ramakrishnan, Rajavenkitasubramony. “Rotor Position and Phase Inductance Estimation of Permanent Magnet Synchronous Machine Using PWM Excitation.” 2018. Doctoral Dissertation, University of Michigan. Accessed December 14, 2019. http://hdl.handle.net/2027.42/145174.

MLA Handbook (7th Edition):

Ramakrishnan, Rajavenkitasubramony. “Rotor Position and Phase Inductance Estimation of Permanent Magnet Synchronous Machine Using PWM Excitation.” 2018. Web. 14 Dec 2019.

Vancouver:

Ramakrishnan R. Rotor Position and Phase Inductance Estimation of Permanent Magnet Synchronous Machine Using PWM Excitation. [Internet] [Doctoral dissertation]. University of Michigan; 2018. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/2027.42/145174.

Council of Science Editors:

Ramakrishnan R. Rotor Position and Phase Inductance Estimation of Permanent Magnet Synchronous Machine Using PWM Excitation. [Doctoral Dissertation]. University of Michigan; 2018. Available from: http://hdl.handle.net/2027.42/145174

.