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Induction Motor Sensorless Speed Estimation by Space Vector Angular Fluctuation
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| Author(s) |
Chun Wang, Zhongfu Zhou, Peter Unsworth, Paul Holland, Petar Igic |
| Abstract |
A novel method of obtaining sensorless speed
information of induction motors, derived from space vector
angular fluctuation, is presented in this paper. It obtains
data from stator current by exploring the position of the
current space vector in the space vector plane. The space
vector signal and variations of the phase angle of the vector
are subjected to Short Time Fourier Transformation
(STFT) and analyzed in the time-frequency domain. Highresolution
spectrum technique is adopted to modify
spectrum of FFT. The method has been tested on laboratory
induction motors, as well as by computer simulation. In the
case of motor starting, when motor speed can change
rapidly, this allows speed estimation within a few cycles. |
| Download |
| Filename: | T4-110.pdf |
| Filesize: | 651.6 KB |
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| Type |
Members Only |
| Date |
Last modified 2007-03-12 by System |
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