Title page for ETD etd-06222010-020248


Type of Document Master's Thesis
Author Ghosh, Ramit
URN etd-06222010-020248
Title Sensorless starting of a brushless D.C. motor
Degree Master of Science
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Ramu, Krishnan Committee Chair
Nunnally, Charles E. Committee Member
VanLandingham, Hugh F. Committee Member
Keywords
  • Electric machinery
Date of Defense 1988-12-15
Availability restricted
Abstract

Permanent magnet brushless DC motors that have found wide application in high performance servo drives need absolute rotor position sensors. However, the cost of the position sensor limits the use of brush less DC motors for low performance applications such as automotive and home appliances. A sensorless starting scheme for brushless DC motors is studied in this thesis. A hardware implementation of the starting scheme has been instrumented. The modeling and simulation of the sensorless starting performance of brushless DC motors have been accomplished to gain the insight into the process. The experimental results confirm the theoretical prediction that the permanent magnet brush less DC motor can be started without a position sensor. The experimental setup with individual subsystems are described in detail.

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