Model predictive control of a voltage source inverter with compensation of deadtime effects

摘要

Dead time elimination of voltage source inverters (VSI) becomes critical for modern current controlled applications with increased requirements regarding the magnitude accuracy and harmonic distortion of an output waveform. Recently many approaches are used to compensate the dead time both in open or close loop control systems. All these schemes require additional circuits or computational effort. This paper presents a model predictive control method with embedded dead time elimination of VSI's. The classical elimination open loop scheme is combined with model predictive control (MPC) realized in state space. The results of simulation carried out with MATLAB/SIMULINK and confirming the theoretical prepositions show the effectiveness of the method for current control of VSI with passive loads.