VARIABLE-STRUCTURE CONTROL OF VOLTAGE SOURCED REVERSIBLE RECTIFIERS

The principal result of the paper is a novel control scheme for the vo ltage sourced reversible rectifier based on variable structure control (VSC) techniques. A time-scale separation property of the rectifier d ynamics is identified. This is exploited by using singular perturbatio n methods to reduce the model order. Conditions are given for global s tability. Simulation results are presented for the reversible rectifie r operating with a simple type of VSC. These demonstrate an excellent dynamic performance. The design process and experimental for a results conventional space vector modulated scheme are included for compariso n.