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THE EXPERIMENTAL INVESTIGATION OF ROTOR TIME CONSTANT IDENTIFICATION FOR VECTOR CONTROLLED INDUCTION MOTOR DRIVES DURING TRANSIENT OPERATING CONDITIONS
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| Author(s) |
M. Sumner; G. M. Asher; R. Pena |
| Abstract |
For the indirect vector controlled induction motor drive employing the scheme based on rotor position measurement and inner current loops, the rotor time constant (f,) is the most influential time varying parameter. Detuning of T, between the controller and the actual machine leads to suboptimal torque response and inefficient operation. Furthermore the operation of the drive in the field weakening region deteriorates as the voltage ceiling of the inverter prevents correct current control if detuning occurs. In this study an extension of the Reactive Power ldentification Scheme [1] is presented and it is shown that the scheme can track the rotor time constant during both changing torque and flux conditions. The scheme is used in conjunction with a rotor flux orientated controller and simulation studies show that the method follows T, correctly under all operating conditions with a good accuracy. The experimental implementation of the procedure for field weakening conditions is presented. |
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| Filename: | Unnamed file |
| Filesize: | 3.868 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-05-17 by System |
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