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Table 1 Nominal parameters of the proposed hybrid AC/DC MG

From: Robust backstepping global integral terminal sliding mode controller to enhance dynamic stability of hybrid AC/DC microgrids

Parameters

Values

BVSC

Capacitor of a LC filter, Cf

6.85 µF

Inductor of a LC filter, Lf

2 mH

AC load

0∼30 kW

Solar PV unit

Maximum output power of a PV system, Ppv

12 kW

PV voltage at MPPT, Vmp

31 V

PV current at MPPT, imp

8.06 A

Resistance of the DBC, rLpv

0.05 Ω

Inductance of the DBC, LLpv

0.352 mH

Input capacitance of the solar PV unit

2200 µF

BESS (Lithium-ion battery)

Nominal voltage of a BESS, vbat

300 V

Rated capacity of a BESS, Qbat

150 Ah

Resistance of the BDDC converter, rbat

0.08 Ω

Inductance of the BDDC converter, Lbat

1 mH

PMSG unit

Output power of a wind generator, Pwind

25 kW

Stator resistance of a wind generator, Rs

0.425 Ω

Stator inductance of a wind generator, Ls

1.67 mH

Stator flux of a wind generator, ψ

0.433

Resistance of the DBC, rR

0.04 Ω

Inductance of the DBC, LR

0.2 mH

Common DC-bus

Rated voltage of the common DC-bus, V(dc-ref)

640 V

Capacitance of the common DC-bus, Cdc

1200 µF

Range of the DC load power, PDC-Load

0∼25 kW