332 



THE ROTARY CONVERTER. 



FIG. 166. ROTARY CONVERTER DRIVEN FROM ALTERNATING CURRENT SIDE. 



Primary Volts 58. 



Full-line curves Excitation for maximum power-factor. 

 Dotted curves Constant excitation of '35 amp. 



Fig. 166 shows some curves obtained on the same 

 machine from which the previous curves were obtained, 

 showing the behaviour of a converter driven from the 

 D.C. side. 



The curves C x and V 2 , drawn as continuous lines, show 

 the variations of alternating current supplied, and direct 



