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1 Bulletin of the Polish Academy of Sciences. Technical Sciences

1 2020

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Balancing reactive compensation at three-phase four-wire systems with a sinusoidal and asymmetrical voltage source

Sołjan Z., Hołdyński G., Zajkowski M.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2020

Vol. 68, nr 1

71--79

The article presents the essentials of reactance compensation of unbalanced loads in three-phase four-wire systems powered by a sinusoidal and asymmetrical voltage source. The whole of compensation and symmetrization is based on the Currents’ Physical Components (CPC) theory. Reactance compensation, i.e. compensation based solely on inductors and capacitors, in four-wire systems requires the device to be included in a star (Y) structure in order to compensate for the reactive current (reactive power) and the current at the neutral conductor caused by zero sequence asymmetry, and for the device in a delta (∆) structure to allow compensation of the reactive current (reactive power) and current, causing asymmetry of the negative sequence.