PART II 



GENERAL DIAGRAMS DEDUCED FROM THE DIAGRAM 

 FOR SYNCHRONOUS MOTORS 



CHAPTER I 



GENERAL DIAGRAMS DEDUCED FROM THE DIAGRAM FOR 

 SYNCHRONOUS MOTORS 



Introduction. The author presented, at the Electrical Congress in 

 Paris, in 1900, a paper on The Graphical Theory of Rotary Converter 

 Regulation, the object of which was to set forth a purely graphical, 

 but nevertheless complete, method of treating this complicated though 

 interesting question, and to show, at the same time, that the solution 

 of the problems involved could be reduced to the solution previously 

 worked out for synchronous motors, by the author, and could be 

 reconciled with his " theory of two armature-reactions in alternators." 



In accordance with that theory, the rotary converter can, in effect, 

 be treated as a simple particular case of the synchronous motor, 

 namely, as a synchronous motor having no transverse reactions; and 

 the vectors obtained for synchronous motors are rendered applicable 

 to rotary converters by merely suppressing the transverse reaction 

 vector. 



It is thus^seen that this theory contains nothing artificial, but that, 

 on the contrary, it is both general and homogeneous to a high degree. 



Notation. The notation used may be substantially the same as 

 for synchronous motors; but the meaning of some of the subscripts 

 must be changed somewhat to take into account the fact that the 

 armature of the rotary converter receives currents of two kinds, primary 



172 



