Model Predictive Control of Three Phase Inverter Fed RL Load

Abstract

The management strategy that uses a plant model for the prediction of future characteristics of a control variable is called as Model Predictive Control(MPC). This paper proposes a predictive model of a three phase inverter with passive RL load with load current as predicted variable & termed as Predictive Current Control(PCC). In the proposed PCC scheme Space Vector Modulation(SVM) technique is implemented for switching state selection of inverter for an assigned cost function in terms of reference & predicted current difference with most optimum value. Discretized forward Euler approximation is used to predict the load current. The MPC algorithm is implemented in a three phase inverter model using the MATLAB / SIMULINK environment.