Abstract

MUNOZ, Nicolás; VILLADA, Fernando  and  LOPEZ, Jesús M. Selective Reduction of Neutral Currents in Electrical Installations by means of Shunt Active Compensators. Inf. tecnol. [online]. 2013, vol.24, n.2, pp.67-78. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642013000200009.

A shunt active power compensator is used for neutral current reduction in three-phase four-wire electric installations. The power compensator currents injected to loads are deduced. Expressions to reduce the neutral current are obtained for global and selective compensation. The currents caused by unbalanced linear loads and nonlinear loads are differentiated. The neutral currents cause several problems in electric systems according to its nature or origin. The selective neutral current reduction allows solving such problems according to the cause that produce them, so that it is also possible to maximize the efficiency and reliability of electrical systems.

Keywords : shunt active power compensator; compensation currents; unbalanced loads; non-linear loads.

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