An Active Power Sharing Method among Distributed Energy Sources in an Islanded Series Micro-Grid
Abstract
:1. Introduction
2. Series Micro-Grid System
2.1. Configuration of the System
2.2. Converter Architecture of Distributed Energy Sources
3. Principle and Implementation Method of Power-Sharing
3.1. Power-Sharing Principle
3.2. Power-Sharing Implementation Method via Inverter-Link Control
3.2.1. Master Control for System Stability
3.2.2. Auxiliary Control for Power-Sharing
4. Scheduling Strategy of Distributed Energy Sources Based on SOC
5. Simulation and Discussions
5.1. Parameters of the System
Parameter | Symbol | Value | Parameter | Symbol | Value |
---|---|---|---|---|---|
Filtering inductor | Lf | 1 mH | Resonant frequency | ωo | 100π rad |
Filtering capacitor | Cf | 80 μF | Cut-off frequency | ωc | 5 rad |
Equivalent resistance | re | 0.3 Ω | Maximum modulation index | mmax | 0.95 |
Proportional coefficient of current regulator | kip | 0.02 | Reference of dc link Voltage | 140 V | |
Proportional coefficient of QPR controller | kp | 0.22 | Nominal rms Voltage phase to ground | uc | 220 V |
Integral coefficient of QPR controller | ki | 25 | Carrier frequency | fc | 2 kHz |
5.2. Single-Phase System
5.3. Three-Phase System
6. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Yang, W.-M.; Wang, X.-G.; Li, X.-Y.; Liu, Z.-Y. An Active Power Sharing Method among Distributed Energy Sources in an Islanded Series Micro-Grid. Energies 2014, 7, 7878-7892. https://doi.org/10.3390/en7127878
Yang W-M, Wang X-G, Li X-Y, Liu Z-Y. An Active Power Sharing Method among Distributed Energy Sources in an Islanded Series Micro-Grid. Energies. 2014; 7(12):7878-7892. https://doi.org/10.3390/en7127878
Chicago/Turabian StyleYang, Wei-Man, Xing-Gui Wang, Xiao-Ying Li, and Zheng-Ying Liu. 2014. "An Active Power Sharing Method among Distributed Energy Sources in an Islanded Series Micro-Grid" Energies 7, no. 12: 7878-7892. https://doi.org/10.3390/en7127878