  Although classical model predictive control with finite control sets
(FCS-MPC) is quite a popular control method, particularly in the realm of power
electronics systems, its direct data-driven predictive control (FCS-DPC)
counterpart has received relatively limited attention. In this paper, we
introduce a novel reformulation of a commonly used DPC scheme that allows for
the application of a modified sphere decoding algorithm, known for its
efficiency and prominence in FCS-MPC applications. We test the reformulation on
a popular electrical drive example and compare the computation times of sphere
decoding FCS-DPC with an enumeration-based and a MIQP method.
