Title page for ETD etd-06222010-020248
|Type of Document
||Sensorless starting of a brushless D.C. motor
||Master of Science
|Nunnally, Charles E.
|VanLandingham, Hugh F.
|Date of Defense
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
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