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| Content Provider | IET Digital Library |
|---|---|
| Author | Sahoo, Saroja Kanti Kishore, Nudurupati Krishna Sinha*, Avinash Kumar |
| Abstract | In this study, a ring-type multi-microgrid (MG) system comprising of three MGs with solar energy-based generation, wind energy-based generation, and static synchronous compensator as primary sources along with batteries as emergency back-up is proposed. The voltage-source converters at the individual MG level serve as the interface between the neighbouring MGs and the grid. An augmented proportional sliding-mode-control-based approach is proposed in the primary control level to improve the power quality of the system during balanced and unbalanced loading conditions. A negative-sequence controller is also included to mitigate the negative-sequence voltage from the inverter output voltage. The multi-MG (MMG) system is capable of operation in grid-connected, islanded, or interconnected mode with balanced and unbalanced loads. The bidirectional DC -DC converters interfacing the batteries at the DC link is controlled by a hysteresis-function-based sliding-mode control. A comparison of the proposed inverter primary control with proportional -integral controller, quasi-proportional -resonant controller, and hysteresis-band current controller is carried out. The comparison reveals that the total harmonic distortion and voltage unbalance factor improves by employing the proposed control when compared with conventional control. The proposed MMG system with its control strategies is modelled in MATLAB/Simulink environment and is experimentally verified using OP4510 from OPAL-RT. |
| Starting Page | 2550 |
| Ending Page | 2562 |
| Page Count | 13 |
| ISSN | 17518687 |
| Volume Number | 13 |
| e-ISSN | 17518695 |
| Issue Number | Issue 12, Jun (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/13/12 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.6620 |
| Journal | IET Generation, Transmission & Distribution |
| Publisher Date | 2019-05-20 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Augmented Proportional Sliding-mode-control-based Approach Balanced Loading Condition Battery Bidirectional DC–DC Converters Control of Electric Power System Conventional Control Current Control DC Link DC-DC Power Converter Distributed Power Generation Electric Current Control Grid-connected Mode Harmonic Distortion Harmonics Hysteresis-band Current Controller Hysteresis-function-based Sliding-mode Control Individual MG Level Interconnected Mode Inverter Output Voltage Inverter Primary Control Invertors MATLAB/Simulink Environment MMG System Multimode Control Multivariable Control System Negative-sequence Controller Negative-sequence Voltage OPAL-RT PI Control Power Generation Control Power Grid Power Supply Quality Power System Economics Power System Interconnection Power System Managemen Power System Operation Primary Control Level Primary Source Proportional-integral Controller Quasiproportional–resonant Controller Real-time Digital Simulator OP4510 Ring-type Multimicrogrid System Self-sufficient MultiMG System Solar Energy-based Generation Static Synchronous Compensator Static VAr Compensators Total Harmonic Distortion Unbalanced Loading Condition Variable Structure System Voltage Control Voltage-source Converter |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering |
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