Indirect predictive control strategy with mitigation of input filter resonances for a direct matrix converter

In this paper an indirect model predictive current control strategy is proposed. The proposed method simplifies the computational cost while avoiding the use of weighting factors. Weighting factors are an issue for model predictive control in a direct matrix converter due to the large number of available switching states and necessity to control both input and output sides of the converter

Predictive control in matrix converters. Part II, Control strategies, weaknesses and trends

The second part of this paper presents an overview of different control strategies and applications for matrix converters (MCs) where predictive control techniques are applied. It will be shown that predictive control is a promising alternative to control MCs due to its simplicity and flexibility to include different constrains in the con¬trol for different industrial applications such as renewable energies, grid interconnection, multi-drives systems control, among others. In addition, some limitations and weaknesses of predictive control in MCs will be discussed as well as some future trends and applications

Evaluation of cascaded MPC performance in voltage source converters

Model predictive control method becomes more popular in research over the last decade. Due to the growing popularity of the model predictive control concept, there are more and more questions about the effectiveness of this method in comparison with other methods. In this thesis cascaded model predictive control of grid connected voltage source converter with LCL filter has been evaluated. The relevant topics and literature regarding the existing control methods, applying requirements to a converter and different transistor technologies have been studied and reviewed. Three criteria of performance have been selected to compare the MPC method with conventional voltage oriented control method: total and individual harmonic distortion, power factor and power losses. The models have been simulated at rated initial values according to EU standards. The results of simulations have been compared. Existing transistor technologies which can be used in the control models have been investigated. Losses of the converter (without losses in the LCL filter) due to the use of each type of transistors have been calculated for each model