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Información tecnológica

On-line version ISSN 0718-0764

Abstract

TORRES-ACEVEDO, Leonardo E; URREA-QUINTERO, Jorge H  and  MUNOZ-GALEANO, Nicolás. Voltage Control of a DC Bus for Shunt Active Power Compensators. Inf. tecnol. [online]. 2017, vol.28, n.6, pp.115-124. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642017000600013.

This paper deals with the DC-bus control problem for three-leg four-wires Shunt Active Power Compensators (SAPCs), based on the solution of a mathematical model. Starting with the SAPC concept a mathematical model with enough information to deduce the transfer function that describes the charging/discharging DC-bus process is proposed. A PI controller for tuning the SAPC with enough speed and robustness to keep the DC voltage in an adequate level is employed, so that it is guaranteed that the active power is only supplied on demand. The proposed model guarantees reactive power compensation, regulation of the DC bus, and balance between the two capacitors in the DC bus. The mathematical model is verified by Matlab simulations and it is validated through a circuital model implemented in PSIM.

Keywords : power electronics; DC Bus; control; shunt active power compensator; SAPC.

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