September 2022
Intermediate
416 pages
11h 39m
English
Content preview from Smart Hybrid AC/DC Microgrids
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CCase Study System Parameters
Table C.1 Parameters used in simulation of microgrid system formed by interfacing converters with enhanced droop control.
| Category | Parameter | Value |
|---|---|---|
| Parameters of interfacing converters | Filter inductors | 5 mH, 0.2 Ω |
| Filter capacitor | 40 μF | |
| Sampling frequency | 4.5 kHz–9 kHz | |
| Droop coefficient | Frequency droop | 0.00143 rad/s/W |
| Voltage droop | 0.00167 V/Var | |
| Integration deadband | 6 W | |
| Integral gain | 0.0286 V/s/W | |
| Time constant of low pass filter | 0.0159 s | |
| Parameter of microgrid | Rated voltage | 208 V/60 Hz |
| Impedance of feeder 1–3 | 3 mH 0.3 Ω | |
| Impedance of feeders between loads | 2 mH 0.2 Ω | |
| Load 1 power | 2350 W, 950 Var | |
| Load 2 power | 1175 W, 475 Var |
Table C.2 Parameters used in simulation of virtual impedance based fault ride‐through control scheme.
| Category | Parameter | Value |
|---|---|---|
| Parameters of interfacing converters | AC voltage | 110 V 60 Hz |
| DC voltage | 230 V | |
| Filter inductors | 5 mH, 0.2 Ω | |
| Filter capacitor | 40 μF | |
| Sampling frequency | 4.5 kHz | |
| Control parameters | Proportional gain of outer loop | 0.22 |
| Resonant gain of outer loop | 25 | |
| Proportional gain of inter loop | 22 |
Table C.3 System parameters for experiments of adjustable unbalanced voltage compensation with IFC active power oscillation minimization.
| Parameter | Value |
|---|---|
| DC link voltage | 150 V |
| Reference active power | 280–70 W |
| Reference reactive power | 70–280 VAR |
| Three phase unbalanced load | 9 Ω, 5 Ω, 3 Ω |
| Grid phase voltage (rms) and frequency | 50 V, 60 Hz ... |
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