Research Article
Semicentralized Power Sharing Scheme for Islanded Parallel-Connected Inverters
| | Description | Symbol | Value |
| | DC link voltage | VDC | 150 V | | Reference voltage | Vref | 60 V (peak) | | Switching frequency | fsw | 4.2 kHz | | System frequency | f | 50 Hz | | Sampling period | Td | 5 ms | | Max power adjustment time | Tr | 300 ms | | Filter inductance (all) | Lf | 2 mH | | Filter capacitance (all) | Cf | 30 μF | | Interface inductance 1 | Lint1 | 5 mH | | Interface inductance 2 | Lint2 | 3.75 mH | | Interface inductance 3 | Lint3 | 6.2 mH | | Line impedance 1 | Zline1 | 0.3 Ω | | Line impedance 2 | Zline2 | 0.2 Ω | | Line impedance 3 | Zline3 | 0.4 Ω | | Load 1 | Rload1 | 12 Ω | | Load 2 | Rload2 | 5.6 Ω | | Nonlinear load | Rnl | 30 Ω | | Inverter 1 rating | | 0.5 kW | | Inverter 2 rating | | 0.5 kW | | Inverter 3 rating | | 0.8 kW | | Part I—active power ratio | RP1 : RP2 : RP3 | 1 : 1 : 1 | | Part I—reactive power ratio | RQ1 : RQ2 : RQ3 | 1 : 1 : 1 | | Part II—active power ratio | RP1 : RP2 : RP3 | 1 : 2 : 4 | | Part II—reactive power ratio | RQ1 : RQ2 : RQ3 | 1 : 1 : 1 |
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