Support for gas turbines to reach the ignition point (60% of rated speed) is needed. Gas turbines over 40MW with two different methods
performed.
Pony motor with gears on main shaft Static frequency converter (SFC) directly connected to generator terminals
The static starter allows the generator to accelerate smoothly without any vibration or voltage drop. Also the generator is soft
It also helps to slow down. A single SFC can run several generators in sequential order.