Abstract
This paper presents a multi-step finite-control-set model predictive control (FCS-MPC) strategy for pulse-skipping operation in series–series (SS) compensated inductive power transfer (IPT) systems with constant voltage load (CVL). The multi-step approach enables individual optimization of each voltage pulse within an MPC cycle. The prediction horizon must be sufficiently long to achieve adequate average power resolution and to predict and attenuate low-frequency oscillations caused by CVL characteristics. To avoid the need for evaluating 2N switching sequences within a control horizon of N steps, an intermediate continuous control set (CCS) MPC is introduced to determine the optimal pulse density. For N =10, this reduces the number of control sets to evaluate for operation at d =0.5 from 1024 to 252, corresponding to a 75% reduction in maximum computational effort without performance degradation. Simulation results demonstrate improved oscillation suppression and accurate average power tracking compared to PDM with PI control.