Model predictive current control of a proposed single-switch three-level active rectifier applied to EV battery chargers

摘要

This paper presents a model predictive currentcontrol applied to a proposed new topology of single-switchthree-level (SSTL) active rectifier, which is exemplified in anapplication of single-phase battery charger for electric vehicles(EVs). During each sampling period, this current control schemeselects the state of the SSTL active rectifier that minimizes theerror between the grid current and its reference. Using thisstrategy it is possible to obtain sinusoidal grid currents with lowtotal harmonic distortion and unitary power factor, which is oneof the main requirements for EVs chargers. The paper presentsin detail the principle of operation of the SSTL active rectifier,the digital control algorithm and the EV battery charger (whereis incorporated the SSTL active rectifier) that was used in theexperimental verification. The obtained experimental resultsconfirm the correct application of the model predictive currentcontrol applied to the proposed SSTL active rectifier.