Sensorless Sliding-Mode Control of DTC-Based Induction Motors
| Autor: | Chien-Hsiang Fu, 傅建祥 |
|---|---|
| Rok vydání: | 2008 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 96 This paper combines the sliding-mode control (SMC) and space vector modulation (SVM) strategy for a DTC-based speed sensorless induction motor. The SVM, which provides constant inverter switching frequency, improves the torque and speed waveforms by ripple reduction. The SMC contributes to robustness of the SVM-based DTC. This combination will provide fast transient response and lower torque and speed ripples of the drive. In the design of sensorless IM drive, the measured stator voltage and current are used for speed estimation. To verify the effectiveness of the proposed method, the Matlab/Simulink software is used to prove the feasibility of this system. Then, the control algorithm is developed on a digital signal processor (TMS320LF2407A). Finally, the experimental system is constructed by integrating the DSP chip and the relative hardware circuit. Experimental results show that good transient and steady-state performance is obtained by the proposed method. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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