ITERATIVE SLICING AS SOLUTION TO THE MODEL PREDIC- TIVE CONTROL PROBLEM OF A THREE-LEVEL INVERTER

Abstract

Conference ProceedingsThis paper considers a model predictive controller with reference tracking that manipulates the integer switch positions of a power converter. It can be shown that the optimal switch position can be computed in a new coordinate system by solving the closest vector problem in a lattice by iterative slicing. A list of Voronoi relevant vectors defining the basic Voronoi cell of a lattice is used to find the Voronoi cell containing the unconstrained optimum in an iterative manner. This concept is exemplified for a three-level single-phase converter with an RL load