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A modular three-phase voltage regulator with a fictitious dc-link is proposed. The proposed scheme is the combination of three single-phase modules while each one of the single-phase module is a three-leg ac voltage regulator. Therefore, the proposed voltage regulator reduces the number of main switches and compensates the voltage of each phase independently. Furthermore, a small film ac capacitor...
This paper presents a soft-switching single-phase three-arm dynamic voltage restorer which aimed at solving voltage disturbances such as voltage swell, voltage sag, over-voltage and under-voltage. The proposed scheme is composed of a three-arm topology which operates as a rectifier and an inverter. Rather than the conventional four-arm topology, the proposed three-arm topology not only reduces the...
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