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Control Strategies of a Variable Speed PWM Excited Induction Generator
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| Author(s) |
R. Pena; L. Diz; R. Blasco-Giménez |
| Abstract |
Controol strategies of a variable speed induction generator supplying a DC bus bar are presented. A three-phase voltage-source current-regulated PWM inverter is used to provide the excitation for the induction generator. Indirect vector controll technique is used to control the currents in the machine, using a two-axis (d, q) rotating frame aligned with the motor flux vector. The torque component q-axis current is used to regulate the DC link voltage whereas the d-axis current is used to keep the flux in the machine constant. Given the non-linear plant characteristic, two DC-link voltage controllers are proposed, namely a PI-type fuzzy logic controller and a classical PI controller with feed-forward compensation or load compensation. Simulation results showing the performance of both controllers are presented for load impacts and variable speed operation. It is shown that a classical PI controller with feed-forward compensation performs as good as the fuzzy controller. |
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| Filename: | EPE1999 - PP00452 - Pena.pdf |
| Filesize: | 189 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-04-06 by System |
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