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Optimised Power Flow on Wind Power Plants with the Doubly Fed Induction Generator
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| Author(s) |
Rabelo B., Hofmann W. |
| Abstract |
In this work the efficiency of the electrical part of a wind generation system is studied. A wound rotor induction machine is used with two back-to-back converters on the rotor circuit in an slip power recovery scheme. The slip control results in an operating speed range that suits the wind energy generation requirements. The vector-controlled doubly fed induction generator (DFIG) enables the decoupling between active and reactive power as well as between torque and power factor. The losses in the machine copper and those originating in the converters are calculated and a loci of the optimal points inside the operation range is derived. Therefore, besides the optimal speed tracking for maximal wind energy conversion, an optimal control strategy for the two converters is developed. This strategy aims to minimise the electrical losses and is based on the control of the reactive power flow of the system. The harmonic losses as well as those of the core and the LC-filter have not been taken into consideration. |
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| Filename: | EPE-PEMC2000 - 374 - Rabelo.pdf |
| Filesize: | 296.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-04-28 by System |
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