THE VECTOR PULSE WIDTH MODULATION CONTROL SYSTEM FOR THREE-PHASE VOLTAGE SOURCE INVERTER
In this paper, a theoretical aspects and issues of practical implementation of space vector pulse width modulation for control three-phase voltage source inverter is presented. The space vector pulse-width modulation method due to the development microprocessor techniques is widely practical used. This method allows to increase the rectified line voltage efficiency and to reduce switching loss in bridge transistors. The structure of digital pulse former control and its design method is proposed. The method essence is using digital-analog control system, in which calculation an error signal carried out by means analog PID regulator, but calculation of pulse width control the digital part of system is carried out. The waveform of the inverter by test results on a physical model is presented, which the adequacy of the method is confirmed and required performance is shown.