Page 132 - Hybrid-Renewable Energy Systems in Microgrids

116 Hybrid-Renewable Energy Systems in Microgrids

Figure 7.2 (Continued)

∗
i
i
∗
∗
∗
iP∗Q∗ where P and Q are active and reactive power references, respectively; P and Q are
i
the corresponding active and reactive current references, respectively. By respectively
substituting Eqs. (7.24) and (7.25) into Eqs. (7.22) and (7.23), the instantaneous active
and reactive power can be written by:
1 ( + kP ) ∗ + − 1 ( − kQ ) ∗ + −
p
q
∗
2
p = P ∗ + 1+ k p P ∗ v + + k p v − v + v − +1 − k q Q ∗ p = P + v + 2 + k v − 2 vv + v + 2 + k v − 2 vv (7.26)
2
⊥
2
2

p
p
v+ +kpv− v⊥+v−⊥P~
P