Implementation of Speed Control of Three-Phase Induction Motor Drives Using Sliding Mode Controller
碩士 === 國立臺灣科技大學 === 電機工程系 === 95 === The objective of this thesis is to develop a DSP-based sliding-mode controller for induction motor speed control system. The mathematical model of induction motor in synchronously rotating reference frame is derived from the three-phase circuit via the coordinate...
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| Format: | Others |
| Language: | zh-TW |
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2007
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| Online Access: | http://ndltd.ncl.edu.tw/handle/27931967473455563448 |
| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 95 === The objective of this thesis is to develop a DSP-based sliding-mode controller for induction motor speed control system. The mathematical model of induction motor in synchronously rotating reference frame is derived from the three-phase circuit via the coordinate transformation. According to indirect field-oriented vector control method, the thesis achieves decoupling of the motor torque and rotor flux amplitude. The variable voltage and frequency of three-phase power source based on voltage space vector pulse-width modulation drives induction motor. Due to the fact that the variations of mechanical parameter and load disturbances affect the control responses, sliding mode controller instead of conventional PI-controller enhancing the response of speed control system and adaptation of load disturbance is proposed.
Finially, an experimental system is actually implemented in three-phase induction motor of 600 W using digital signal processor as the core of the speed control system. Experimental results confirm that the sliding mode control rule yield not only better response in speed but also superior robustness in external load disturbances.
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