System for correcting power factor and harmonics present on an electroduct in an active way and with high-dynamics

摘要

An electric control system for a pulse width modulated inverter connected in parallel to an electricity distribution network for correcting or minimizing a voltage total harmonic distortion of the distribution network includes a sampler of the voltage of the electricity distribution network for obtaining samplings of the distribution network. The sampler preferably is an analog-to-digital converter. The system also includes a phase locked loop circuit that supplies a phase value of a period under examination, and a storage system for coupling the various samplings with the phase value obtained by the phase locked loop circuit.