ÇUKUROVA UNIVERSITY INSTITUTE OF NATURAL AND APPLIED ...

3. FUNDAMENTALS OF DVR Mustafa İNCİ
Load
Figure 3.8. (a), (b) and (c) Equivalent circuit of system shown in Figure 3.1
(c)
By using equivalent circuit, the injected voltage
can be written as
V
DVR
Z
= M
nV
filter
Req
+ jωL
(3.6)
eq
The relationship between and can be expressed as
V
filter
Z
1
jωC
= C
f
=
Vinv
=
ZC
+ Ri
+ Z 1
L + Ri
+ jωL
2
f
jωC
f
V
inv
( 1−
ω L
f
C
f
) + jRiωC
f
(3.7)
By using (3.6) and (3.7), can be rearranged in (3.8) and (3.9)
V
Z
V
ω +
= M
DVR
n
Req
+ j L
2
eq
inv
( 1−
ω L
f
C
f
) jωRiC
f
Z
M
V
( R + jω L )( [ 1−
ω L C ) + jωR C ] inv
= n
2
eq eq
f
f
i
f
(3.8)
V
DVR
= NV inv
(3.9)
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