Apparent power of three-phase power system in nonsinusoidal mode and energy effectiveness of shunt active filters
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Abstract
The formula for apparent power of three-phase power system was derived, which takes into account the ratio of the resistances of the power cable. Conditions to achieve unity power factor in a three-wire and four-wire three-phase power system were obtained. It is proved that shunt active filter of three-phase four power system using proportional-vector formation of line currents with partial attenuation of the zero-sequence component in accordance to the parameters of the power cable provides unity power factor and minimum energy losses.
Reference 12, figure 1.
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