Multi Level DC Voltage Reinjection for Especial Applications using STATCOM
نویسنده
چکیده
A new concept, the multi level voltage/current reinjection is described in this paper. A voltage source converter is proposed, in which the multistep output voltage waveform is achieved by the reinjection of different DC voltage levels via the common neutral point of the converter bridges an 84-pulse voltage source converter (VSC), assembled by combining one twelve-pulse VSC, in conjunction with an asymmetric single phase seven-level converter plus an injection transformer. With this arrangement, the VSC output's total harmonic distortion in voltages is reduced, allowing it to be used in especial applications or as the basement of flexible A.C. transmission systems (FACTS) devices. The proposed strategy allows savings in the number of employed switches. Simulations results are provided to show the proposal appropriateness.
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