| Abstract [eng] |
The main focus of the Master’s thesis is the analysis of the reactive power compensation ability of the matrix converter. The reactive power flowing in or out of the grid can be regulated with the matrix converter by controlling the magnitude and/or phase angle of the current at the input of the converter. Matrix converter modulated with the conventional indirect space vector modulation, which consists of Current Source Rectifier and Voltage Source Inverter part. To verify the reactive power capabilities of the device simulation model is built in MATLAB Simulink. MC model consists of AC three phase voltage source, 3x3 matric converter, input and output filters and load. Parameters of load, input and output filter were calculated. The matrix converter was connected to a partial load of the company. By controlling the phase angle of the current at the input of the converter reactive power of the rest of load was compensating. In the case of volatile voltage matrix converter can be controlled by adjusting angle of input current and voltage between + 70 ° and -70 °. Meanwhile at constant voltage, matrix converter can be regulated between +45 ° and -45 ° of control angle. The entire reactive power of the company is compensated when the MC is connected to the company's power supply input panel. In this case limitation of maximum input to output voltage ratio is 0,866 and special transformer with higher value of output voltage is required. |
