FREQUENCY CONVERTER
Secondary current:

181

Sftiti

* + r) + js (xi + x)

Therefrom, we get :
Ratio of currents:

(g - JV)

o

js

Ratio of e.m.fs.:

1 + -~ 7

=

E\ ~~ 's

Total apparent primary impedance:

1 + •"- (g - jb) [(r, + r) + js (Xl + x}]
o
where;
XssX'±2L + xf-
s s2
in general secondary circuit as discussed in footnote, page 179.
Substituting in these equations:
s= I,
gives the
General Equations of the Stationary Alternating-current Transformer
Substituting in the equations of the general alternating-current
transformer:
£ = 0,
gives the
General Equations of the Induction Motor
Substituting: