Sliding Mode Control Based on Observation of line side PWM Rectifier Voltage

Abstract

Pulse width modulation (PWM) rectifiers are among the best solutions for improving the electrical power transfer quality from a source to a receiver. In fact, some authors have presented several methods for controlling the three-phase PWM rectifier and eliminating total harmonic distortion to achieve an uncontaminated system operating within a unit power factor. This article focuses on the sliding mode method, which is based on data from two or three line current sensors and a DC link voltage sensor, as well as the development of the most modern network voltage controllers, which include a sliding mode regulator for the system. The simulation results demonstrate the viability and reliability of the observer's sliding mode methodology in a transient and stable state with a quasi-sinusoidal low total harmonic distortion (THD) line current source and a good maintenance of the reference voltage on the same day, in the DC side of the PWM rectifier, in accordance with standards.