ECOLOGICAL POWER SYSTEM WITH LOCAL DISTRIBUTION DC-LINE FOR AC-DRIVE CONSUMERS

The paper deals with the simulation and implementation of AC-drives with synchronous and induction motors fed by a local distribution DC-line, which is supplied from an autonomous vector controlled synchronous generator. The main AC-grid is connected to DC-line the via ecological power electronic converters with bi-directional power flow, like the AC-drives and the generator. Solutions are proposed for sine-wave rectifying and inverting of the energy accomplishing grid-side unity power-factor with active power-filtering of the AC-grid- and motorside currents for different transferred energy levels. The energy-efficiency of the drives is achieved by means of vector control structures.