Sensorless Speed Controller of Induction Motor
碩士 === 國立屏東科技大學 === 車輛工程系碩士班 === 93 === Induction motors are used very often in industries. In general, speed sensors are necessary to have induction motors controlled. However, because of the less reliability or lack of space, sometimes, speed sensors are not applicable to certain induction motors...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2006
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| Online Access: | http://ndltd.ncl.edu.tw/handle/09568418114384667594 |
| Summary: | 碩士 === 國立屏東科技大學 === 車輛工程系碩士班 === 93 === Induction motors are used very often in industries. In general, speed sensors are necessary to have induction motors controlled. However, because of the less reliability or lack of space, sometimes, speed sensors are not applicable to certain induction motors. To avoid this, this research proposes a sensorless speed control algorithm for induction motors. The control algorithm proposed is basically an adaptive sliding-mode-like control algorithm which estimates the motor speed with the measurement values of current and voltages. The real motor speed is then controlled to track the estimation. The Lyapunov stability criterion is used to ensure the convergence of the estimation errors as well as the stability of the adaptive control algorithm. Simulations and experiments have been done to validate the developed adaptive sensorless speed control algorithm.
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