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Stability analysis and optimal control strategy of DC microgrids

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21 mar 2025
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Figure 1.

Architecture of the DC microgrid
Architecture of the DC microgrid

Figure 2.

Equivalent model of constant power load
Equivalent model of constant power load

Figure 3.

Constant power load equivalent model with damping filter circuit
Constant power load equivalent model with damping filter circuit

Figure 4.

Optimal operation structure of the low-voltage DC microgrid
Optimal operation structure of the low-voltage DC microgrid

Figure 5.

Multi-target gray Wolf algorithm flow
Multi-target gray Wolf algorithm flow

Figure 6.

Bus voltage in Case 1
Bus voltage in Case 1

Figure 7.

Bus voltage in Case 2
Bus voltage in Case 2

Figure 8.

Bus voltage in Case 3
Bus voltage in Case 3

Figure 9.

Bus voltage in Case 4
Bus voltage in Case 4

Figure 10.

Busbar voltage of submicrogrid 1
Busbar voltage of submicrogrid 1

Figure 11.

Busbar voltage of submicrogrid 2
Busbar voltage of submicrogrid 2

Figure 12.

Busbar voltage of submicrogrid 1
Busbar voltage of submicrogrid 1

Figure 13.

Busbar voltage of submicrogrid 2
Busbar voltage of submicrogrid 2

Figure 14.

The results of the power simulation of each part
The results of the power simulation of each part

Figure 15.

Dc bus voltage simulation result
Dc bus voltage simulation result

Figure 16.

The results of the power simulation of each part
The results of the power simulation of each part

Figure 17.

Dc bus voltage simulation result
Dc bus voltage simulation result

Figure 18.

Battery output current simulation results
Battery output current simulation results

Four disturbance conditions

Re1 Re2 Whether to meet the high signal stability criterion(Re1) Whether to meet the high signal stability criterion(Re2)
Case1 14Ω contented contented
Case2 14Ω 0.5Ω contented dissatisfied
Case3 0.5Ω 14Ω dissatisfied contented
Case4 0.5Ω 0.5Ω dissatisfied dissatisfied
Lingua:
Inglese
Frequenza di pubblicazione:
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