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Static VAR Compensator-Based Terminal Voltage Control Of Three-Phase Induction Generator For Stand-Alone AC And DC Applications
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| Author(s) |
Tarek Ahmed, Mutsuo Nakaoka |
| Abstract |
In this paper, a three-phase induction machine-based
wind power generation scheme is proposed. This scheme uses a
low-cost diode bridge rectifier connected to the induction machine
to transfer dc power with DC voltage regulation. The excitation to
the three-phase SEIG is supplied by the static VAR compensator
(SVC) composed of the fixed excitation capacitor and the
thyristor-controlled reactor. The SVC is used to regulate smoothly
the DC load voltage of the diode bridge rectifier circuit connected
to the three-phase self-excited induction generator (SEIG). This
simple method for controlling the reactive power of the SVC is
useful for wind turbines installed at high wind speed sites, which
are remote, or have only weak electrical networks. The dynamic
performance responses and the experimental results of a 5-kW
220-V three-phase SEIG directly connected to a diode bridge
rectifier at various loads are presented. Moreover, The steadystate
simulated and experimental results of the PI closed-loop
feedback voltage regulation scheme-based the SVC prove the
practical effectiveness of these simple method for a wind turbine
system. This proposed system with simple control techniques,
provide a cost-effective method of improving the power quality of
wind farms. |
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| Filename: | A54289 |
| Filesize: | 255 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-16 by System |
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