Control system for regulating the torque and speed of an electric motor including static frequency detector for speed detection and regulation

摘要: A control system for regulating the torque and speed of an alternating current wound rotor motor used in traverse drive overhead traveling crane comprises SCR bank controlled by a firing circuit responsive to actuation operator-controlled induction master control. The further means deriving signal indicative instantaneous torque, speed, summing combining signal, reference from provide error which is operate thereby power delivered insure that constant. voltage line-to-neutral across one stator windings; phase line winding; multiplying signals wattage or proportional being developed motor. supplied minus attributable fixed loses directly related shaft. measures frequency flow (secondary).