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An Improved Look-up Table for Zero Speed Control in DTC Drives
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| Author(s) |
A. Damiano; G. Gatto; I. Marongiu; A. Perfetto |
| Abstract |
The present paper deal with a Direct-Torque-Controlled (DTC) voltage-source inverter-fed induction motor (IM) drive during the start-up and zero speed operations. The analysis of the conventional methods used for DTC servo-drives highlights the difficulty of controlling at zero speed and during the start-up both the electromagnetic torque and the stator flux. The analysis and mathematical modellization of demagnetisation phenomena have allowed to develop an alternative look-up table to control the DTC drive. The main features of the proposed look-up table are of avoiding demagnitisation problem at zero speed and of reducing the power electronic switching frequency at low speed. Results of extensive simulations are presented and discussed to prove the effectiveness of the proposed look-up table. |
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| Filename: | EPE1999 - PP00415 - Marongiu.pdf |
| Filesize: | 793.1 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-04-06 by System |
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