
Flexible AC Transmission Systems 37-21
Components of both converter output voltages depend on the DC voltage. Equations (37.47) and (37.48)
c
an
b
e
w
ritten
f
or
t
he
r
espective
v
oltages
w
here
k
p
and k
s
are factors including a shunt and a series trans-
former
r
atio
a
nd
r
elating
t
he
D
C
a
nd
A
C
v
oltage
o
f
e
ach
c
onverter
w
hile
t
aking
i
nto
a
ccount
c
onverter
t
ype.
e
a
ngles
δ
p
and δ
s
represent the phase shi of each converter output voltage with respect to the
r
eference
p
osition.
e
c
ontrol
f
actors
m
p
for shunt converter and m
s
for series converter can take any
v
alue between 0 and 1.
′
=
′
=
′
′
=
′
=
′
u u k m u k d
u u k m u k d
pd dc p p p dc p pd
pq dc p p p