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New Concepts Of Distributed Power Generator And Dynamic Voltage Restorer
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| Author(s) |
Yonghua Cheng, Philippe Lataire |
| Abstract |
Due to the presences of big motor frequently
starting or/and other renewable energy source
disconnecting/connecting, AC voltage could be highly distorted
in two dimensions (phase shift and magnitude change) on the
electrical power distribution network. Reactive power
compensation can not correctly compensate this distortion on
AC voltage. Therefore, new concepts of distributed power
generator have been presented in two modes. While the power
dispatching mode is achieving a constant or maximum output
power from renewable energy sources, the load following mode
is fast controlling the AC voltage by injecting the active power.
Also the harmonics are simultaneously identified by the
measurements subtracting their fundamental components, and
the control system is taking account of these harmonics. A
distributed power generator was prototyped and tested under
grid unconnected condition. The AC voltage was completely
controlled by this system in case of load current being highly
distorted. The result has shown high power quality can be
achieved besides the power sharing on the weak distribution
networks. |
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| Filename: | A123488 |
| Filesize: | 275.1 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-20 by System |
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