Power quality of Single-Phase Standalone Inverter with linear and nonlinear load

Abstract

In this paper, the implementation of sliding mode control SMC in a standalone inverter is analyzed and developed. This in order to improve the performance of the inverter when feeding various types of loads, such as purely resistive loads, resistive-inductive, resistive-capacitive loads and non-linear loads. The parameters that are evaluated are waveform of the output voltage, total harmonic distortion of the inverter output voltage, its response between load changes and disturbances in the load. The novel proposal in this paper is the implementation of the sliding modes control through the averaged control of the PWM modulator, because the sliding mode control for its best performance proposes an infinite switching frequency, which cannot be achieved in an inverter due to your power devices. For this reason, in this paper an integrated structure is plated which allows the sliding mode control to work at a fixed frequency. The results of the inverter's performance with the sliding mode control are compared with a PI, P-Resonant control in the current loop, where it is observed that the implementation of the integrated structure with the sliding mode control has better performance