| Abstract |
In the paper a new formation method of output current of voltage-fed inverter with follow-up control system, based on alter-polar modulation, is presented. There is also included an analytical analysis of the time-function of output current in case of arbitrary reference signal. This analysis leads to simple formulas for determing most important system parameters and may create a basis for the inverters with the follow-up control system design. A comparison between alter-polar, bipolar and unipolar modulation was made too. It was shown, among others, that the alter-polar modulation gives the smaller commutation losses in the inverter. The theoretical results are compared to the precise numerical calculations and the laboratory tests. |
