
Recent Trends in Multilevel Inverter 19-21
R
ead the sampled amplitudes of v
AN
, v
BN
, and v
CN
for the current sampling interval.
Determine the time equivalents of phase voltages, i.e., T
as
, T
bs
, and T
cs
T v
T
n
T v
T
V n
T v
T
V n
as AN
s
bs BN
s
cs CN
s
= ×
−
= ×
−
= ×
−( )
,
( )
,
( )
,
1 1 1
DC DC
where n is the number of levels.
Find out T
oset1
as T
oset1
= −(T
max
+ T
min
)/2, where T
max
, T
min
are the maximum and minimum
of T
as
, T
bs
, and T
cs
.
Determine
as
,
,
. Determine the
carrier indices I
a
, I
b
, and I
c
for A, B, and C phases, respectively.
Determine T
a_cross
, T
b_cross
, and T
c_c ...