Title :
Evolution of Ward-Leonard Control for Shovels and Draglines
Author_Institution :
Bucyrus-Erie Company, South Milwaukee, Wis.
Keywords :
AC motors; DC motors; Diesel engines; Electric motors; Electric variables control; Induction motors; Petroleum; Power supplies; Torque control; Traction motors;
Journal_Title :
American Institute of Electrical Engineers, Transactions of the
DOI :
10.1109/T-AIEE.1948.5059849
