CONVERTERS 

 The e.m.f. between rings or " delta " e.m.f. is 



375 



/ 

 2 V2 



E, 



The power input is 



\/3 ft Ji - 3 Esli = 3 EJ' 



and is equal to the output El. 



= 0.612 E. . . (348) 



FIG. 355. Two-phase converter. 

 Ii 



FIG. 356. E.m.fs. and currents in a three-phase converter. 



Thus the line current is 



El El 



V3 Ei " . V3 E " 3 



/ = 0.943 7, (349) 



