Phase compensation: With special reference to polyphase motors

IN a series of articles which appeared in the Electrical World in 1913, the author dealt, at some length, with phase control in general, with phase compensation in synchronous motors, and with the only method of controlling the power factor in single-phase motors with shunt characteristic which has, to date, become of practical value; but other means of controlling the phase difference in nonsynchronous single-phase motors are known and these will now be considered before dealing with phase control as applied to non-synchronous polyphase motors.