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SLIDING MODE TORQUE AND STATOR FLUX CONTROL OF AN INDUCTION MACHINE DRIVE
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| Author(s) |
F. Moldoveanu; V. Comnac; M. Cernat; I. Draghici; R.M. Cernat |
| Abstract |
The principles of variable structure control systems in sliding
mode regime are presented and a control structure is derived
which allows the application of these principles to the torque
and stator flux control of PWM inverter-fed induction machine
drives. The design of the control scheme is carried out
considering the model of the machine in a fixed two-phase
reference frame ( b - a ), in order to work directly with
measurable currents and voltages. The electromagnetic torque
and the stator flux are controlled by non-linear hysteresis
controllers, whose output signals are used in a switching table
to generate the command signals of the three-phase inverter. A
full order state observer (Luenberger) is used for the stator flux
estimation. Simulation (C++) results are presented, showing
good performance of the system. |
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| Filename: | Unnamed file |
| Filesize: | 277.7 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-20 by System |
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