Abstract
In conventional direct torque controlled (DTC) induction motor drive, there is usually undesired torque and flux ripple. In this paper close loop stator flux estimation of DTC with space vector modulation under heavy load at low speed was proposed. First, brief description of stator currents in direct-quadrature reference frame with voltage model. Second, close loop stator flux feedback used through PID controller to correct the value of stator flux estimation and eliminate error. In addition, low pass filter also used instead of pure integration to avoid saturation problem. Finally, simulation results show that the flux and torque ripples are greatly reduced when compared with open loop of stator flux estimation.
Original language | English |
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Pages (from-to) | 572-577 |
Number of pages | 6 |
Journal | Procedia Engineering |
Volume | 38 |
DOIs | |
Publication status | Published - 2012 |
Externally published | Yes |
Event | International Conference on Modelling Optimization and Computing - TamilNadu, India Duration: 10 Apr 2012 → 11 Apr 2012 |
Keywords
- Direct torque control
- Induction motor
- Space vector modulation
- Stator flux estimation
ASJC Scopus subject areas
- General Engineering