| Abstract |
The combination of a synchronous generator and a battery-fed inverter is a suitable solution for the voltage / frequency control of isolated grids which don't have a mechanical drive, e.g. in hybrid power supply systems with photovoltaic generators and wind energy converters. Here, the frequency control has to intervene via the electrical torque, the control of which is coupled with the voltage control. A decoupling transformation to direct and quadrature axis stator flux control is proposed and the results of separate state control are both presented with the controlled circuit model and with a 10 kVA laboratory plant. |
