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TECHNIQUE IN MODELLING INVERTER-FED MACHINE DRIVES AND INVERTER LOSSES
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| Author(s) |
D. T. W. Liang; B. W. Williams |
| Abstract |
A simple technique for simulating inverter-fed motor drives has been utilized as an alternative to the traditional two-axis machine approach. This technique uses a coupled-circuit approach, and yet retains all the observable stator terminal conditions without time-consuming matrix Inversion. The technique is demonstrated using a three-phase induction motor driven by a phase-controlled thyristor controller as well as a PWM voltage-fed inverter controller. The main advantages are the ease of modification to the system components and the flexibility of implementation to other drives without changing the topology. Time domain analysis is used to determine the steady-state current and torque for any desired voltage, speed and frequency. By using a pseudo-varying time stepping method, the on-state and switching losses can be incorporated based on a first order model for the switching devices. |
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| Filename: | Unnamed file |
| Filesize: | 3.94 MB |
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| Type |
Members Only |
| Date |
Last modified 2021-02-15 by System |
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