This paper is part of the design and implementation of a microcentral of generation from an induction generator. The diagram is represented by an induction generator, a rectifier and an inverter. In this paper an analysis of the design and implementation conditions of an LCL filter is performed to improve the waveform of the output voltage signal of an SVPWM inverter. The design is made in order to be able to interconnect the three-phase inverter with a load of the resistive or composite type, effecting the suppression of harmonics that are introduced in the alternating voltage signal by the modulation technique used to implement the inverter.