Inderscience Publishers

Increasing of the quality of energy from stochastic fluctuating sources using dynamic power conditioning

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Courtesy of Inderscience Publishers

The stochastic fluctuating offer of wind energy limits the capacity of supply in electrical grids for technical and economical reasons. To increase the supply, a concept of dynamic conditioning with the objective of increasing the quality of supply was developed. The concept envisages supporting and managing the electrical grid, respectively by compensating of active and reactive power with static converters ('Electronic Synchronous Machine') and short term storage. Through the four-quadrant operation of the converters, short term fluctuation of the energy sources and changes of the load can be absorbed or smoothed directly on location. By using dynamic storage systems an intermediate storage of the stochastically offered primary energy is achieved. This low order energy can thereby be converted into high order recallable energy, which can even be used to satisfy peak demands. The local compensation of the fluctuation of the energy supply on the one hand and the changes of the demand on the other hand, allows a more steady energy demand from the nation-wide electrical grid.

Keywords: dynamic storage, power conditioning, renewable energy systems, energy quality, wind energy, wind power, stochastic fluctuating energy sources, local compensation, short term energy storage

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