Page 135 - Hybrid-Renewable Energy Systems in Microgrids

Study of control strategies of power electronics during faults in microgrids 119

Figure 7.4 (Continued)

adjust the relative relationship between positive- and negative-sequence power, the
flexible scalars can also be involved in current references as [3]:

P ∗ P ∗
+
∗
i = k p 2 v + 1 ( − k ) 2 v − (7.28) iP∗=kpP∗v+ v++1−kpP∗v− v−
2
2
P
p
v + v −
Q ∗ Q ∗
∗
+
2
i = k q 2 v + 1 ( − k ) 2 v − ⊥ (7.29) iQ∗=kqQ∗v+ v⊥++1−kpQ∗v− v⊥−
2
⊥
Q
p
v + v −