H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
Système d'installation qui permet aux moteurs électriques alimentés par courant continu de fonctionner avec vitesse variable entre de grandes limites sous charge constante sans l'emploi de rhéostats.