SYNCHRONISATION METHOD OF INDEPENDENT VOLTAGE INVERTER WITH THREE-PHASE VOLTAGE SUPPLY

摘要

FIELD: electricity. ^ SUBSTANCE: synchronisation process is performed in two stages. On the first stage the equalisation of voltage values at converter output and voltage of supply mains is performed by influencing the flux linkage determination. At that, control of process parametre is not disturbed. At the second stage the equality of frequencies of these voltages and their phase synchronisation is provided by means of influence on determination of rotation speed of asynchronous motor. ^ EFFECT: reducing negative consequences of transient processes, which appear when power supply of asynchronous motor is switched from converter to the mains. ^ 2 dwg