Development of single-loop current sensorless control for bidirectional three-phase PWM rectifier

This paper is a first attempt to analyze single-loop current sensorless control (CSC) method applied to three phase converter. The most suitable converter topology is selected among popular bidirectional AC-DC converters. The theory of CSC operation is described and evaluated by means of simulation. Results have confirmed the ability of controlling currents in rectifier and inverter mode and keeping inductor´s average current over the track of reference value in discontinuous and continuous current mode.