Kelber, C. R.; Schumacher, W.: Adjustable Speed Constant Frequency Energy Generation with Doubly-Fed Induction Machines. In: European Conference Variable Speed in Small Hydro (VSSHy), Grenoble, Frankreich, 2000
Kelber, C. R.; Schumacher, W.: Control of Doubly-Fed Induction Machines as an Adjustable Speed Motor/Generator. In: European Conference Variable Speed in Small Hydro (VSSHy), Grenoble, Frankreich, 2000
