Abstract:
This 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.
