Course info

Description:  A Microgrid can be defined as a part of the grid with elements of prime energy movers, power electronics converters, distributed energy storage systems and local loads, that can operate autonomously but also interacting with main grid. The functionalities expected for these small grids are: black start operation, frequency and voltage stability, active and reactive power flow control, active power filter capabilities, and storage energy management. This way, the energy can be generated and stored near the consumption points, increasing the reliability, and reducing the losses produced by the large power lines. In addition, as one of current trends and developments the Internet of Things (IoT) is affecting and will shape the society and the world in all respects. The meet of IoT and energy industry naturally brings the promise of Energy Internet round the corner to introduce significant advantages and opportunities: enhanced automation, controllability, interoperability and energy efficiency, smarter energy management, and so on. The course starts giving some examples of Microgrids in the world. The course participants not only will learn modeling, simulation and advanced control strategies of three-phase voltage source inverters operating in grid-connected mode and islanded mode, but also, how these power electronics converters are integrated in AC Microgrids and how to be extended Energy Internet at a systemic level.

Relevant concepts like frequency and voltage droop control, virtual impedance, UPS, virtual synchronize generator concept are explained in detail. Finally, this course also introduces the study of the hierarchical control of Microgrids for AC electrical distribution systems, stability analysis based on small signal models, communication technologies in AC microgrids, and Energy Internet-enabled opportunities and advanced solutions.

Day 1:  Microgrids Systems Overview, Modelling, Grid forming and Grid Feeding Control, Hierarchical Control

Josep Guerrero (3h), Yajuan Guan (3h), Yun Yu (1h)

Day 2: Stability Analysis, Passivity-based modelling, Power Flow Analysis and lab. demonstration

Josep Guerrero (1h), Yajuan Guan (3h), Ali Akhavan (2h), David Tinajero (1h)

Day 3: Virtual Synchorous generators, Industrial Microgrid applications, communications and IoT in Microgrids

Juan Vasquez (1h), Yajuan Guan (2h), Baoze Wei (1h), Babak Arbab Zavar (1h), Ying Wu (2h)

Prerequisites:

Knowledge on power electronics modelling, control theory and Matlab/Simulink is recommended for the exercises.

Form of evaluation:

The participants will be grouped and asked to team work on several case study scenarios and tasks proposed along the course. The course assessment will be done through a final multi-choice test in combination with delivery of exercises reports.

Organizer:     Profesor Juan C. Vasquez, juq@energy.aau.dk, Professor Josep M. Guerrero, joz@energy.aau.dk

Lecturers:      Profesor Josep M. Guerrero, Aalborg University,Profesor Juan C. Vasquez, Aalborg University, Assoc. Professor, Yajuan Guan, Aalborg University

                       Assistant Professor, Baoze Wei, Aalborg University, Assistant Professor Gibran Tinajero, Aalborg University, Postdoc, Ying Wu, Aalborg University

                       Postdoc, Ali Akhavan, Aalborg University, Babak Arbab Zavar, Aalborg University

ECTS:              3

Date/Time:     April 3 -5, 2023

Place:              AAU Energy, Aalborg

Max no. of participants:    25

Deadline:       13 March 2023

Literature:

1.       Book chapters:

1.1.     Chapter 1 & 2 of Microgrids: Modeling, Control, and Applications (Elsevier)

2.       Articles

2.1.     J. M. Guerrero, J. Matas, L. Garcia de Vicuna, M. Castilla and J. Miret, "Decentralized Control for Parallel Operation of Distributed Generation Inverters Using Resistive Output Impedance," in IEEE Transactions on Industrial Electronics, vol. 54, no. 2, pp. 994-1004, April 2007, doi: 10.1109/TIE.2007.892621.

2.2.     J. M. Guerrero, J. C. Vasquez, J. Matas, M. Castilla and L. Garcia de Vicuna, "Control Strategy for Flexible Microgrid Based on Parallel Line-Interactive UPS Systems," in IEEE Transactions on Industrial Electronics, vol. 56, no. 3, pp. 726-736, March 2009, doi: 10.1109/TIE.2008.2009274.

2.3.     J. M. Guerrero, L. Hang and J. Uceda, "Control of Distributed Uninterruptible Power Supply Systems," in IEEE Transactions on Industrial Electronics, vol. 55, no. 8, pp. 2845-2859, Aug. 2008, doi: 10.1109/TIE.2008.924173.

2.4.     J. C. Vasquez, J. M. Guerrero, M. Savaghebi, J. Eloy-Garcia and R. Teodorescu, "Modeling, Analysis, and Design of Stationary-Reference-Frame Droop-Controlled Parallel Three-Phase Voltage Source Inverters," in IEEE Transactions on Industrial Electronics, vol. 60, no. 4, pp. 1271-1280, April 2013, doi: 10.1109/TIE.2012.2194951.

2.5.     Y. Han, H. Li, P. Shen, E. A. A. Coelho and J. M. Guerrero, "Review of Active and Reactive Power Sharing Strategies in Hierarchical Controlled Microgrids," in IEEE Transactions on Power Electronics, vol. 32, no. 3, pp. 2427-2451, March 2017, doi: 10.1109/TPEL.2016.2569597.

2.6.     J. C. Vasquez, J. M. Guerrero, J. Miret, M. Castilla and L. G. de Vicuña, "Hierarchical Control of Intelligent Microgrids," in IEEE Industrial Electronics Magazine, vol. 4, no. 4, pp. 23-29, Dec. 2010, doi: 10.1109/MIE.2010.938720.

2.7.     J. M. Guerrero, J. C. Vasquez, J. Matas, L. G. de Vicuna and M. Castilla, "Hierarchical Control of Droop-Controlled AC and DC Microgrids—A General Approach Toward Standardization," in IEEE Transactions on Industrial Electronics, vol. 58, no. 1, pp. 158-172, Jan. 2011, doi: 10.1109/TIE.2010.2066534.

2.8.     J. M. Guerrero, M. Chandorkar, T. -L. Lee and P. C. Loh, "Advanced Control Architectures for Intelligent Microgrids—Part I: Decentralized and Hierarchical Control," in IEEE Transactions on Industrial Electronics, vol. 60, no. 4, pp. 1254-1262, April 2013, doi: 10.1109/TIE.2012.2194969.

2.9.     J. M. Guerrero, P. C. Loh, T. -L. Lee and M. Chandorkar, "Advanced Control Architectures for Intelligent Microgrids—Part II: Power Quality, Energy Storage, and AC/DC Microgrids," in IEEE Transactions on Industrial Electronics, vol. 60, no. 4, pp. 1263-1270, April 2013, doi: 10.1109/TIE.2012.2196889.

2.10. Q. Shafiee, J. M. Guerrero and J. C. Vasquez, "Distributed Secondary Control for Islanded Microgrids—A Novel Approach," in IEEE Transactions on Power Electronics, vol. 29, no. 2, pp. 1018-1031, Feb. 2014, doi: 10.1109/TPEL.2013.2259506.

2.11. Y. Guan, J. M. Guerrero, X. Zhao, J. C. Vasquez and X. Guo, "A New Way of Controlling Parallel-Connected Inverters by Using Synchronous-Reference-Frame Virtual Impedance Loop—Part I: Control Principle," in IEEE Transactions on Power Electronics, vol. 31, no. 6, pp. 4576-4593, June 2016, doi: 10.1109/TPEL.2015.2472279.

2.12. Y. Guan, J. C. Vasquez, J. M. Guerrero and E. A. A. Coelho, "Small-signal modeling, analysis and testing of parallel three-phase-inverters with a novel autonomous current sharing controller," 2015 IEEE Applied Power Electronics Conference and Exposition (APEC), 2015, pp. 571-578, doi: 10.1109/APEC.2015.7104406.

2.13. Y. Guan, J. C. Vasquez and J. M. Guerrero, "An enhanced hierarchical control strategy for the Internet of Things-based home scale microgrid," 2017 IEEE 26th International Symposium on Industrial Electronics (ISIE), 2017, pp. 51-56, doi: 10.1109/ISIE.2017.8001222.

2.14. B. Wei, J. M. Guerrero, J. C. Vásquez and X. Guo, "A Circulating-Current Suppression Method for Parallel-Connected Voltage-Source Inverters With Common DC and AC Buses," in IEEE Transactions on Industry Applications, vol. 53, no. 4, pp. 3758-3769, July-Aug. 2017, doi: 10.1109/TIA.2017.2681620.

2.15. B. Wei, A. Marzàbal, R. Ruiz, J. M. Guerrero and J. C. Vasquez, "DAVIC: A New Distributed Adaptive Virtual Impedance Control for Parallel-Connected Voltage Source Inverters in Modular UPS System," in IEEE Transactions on Power Electronics, vol. 34, no. 6, pp. 5953-5968, June 2019, doi: 10.1109/TPEL.2018.2869870.

2.16. B. Wei, Y. Gui, S. Trujillo, J. M. Guerrero, J. C. Vásquez and A. Marzàbal, "Distributed Average Integral Secondary Control for Modular UPS Systems-Based Microgrids," in IEEE Transactions on Power Electronics, vol. 34, no. 7, pp. 6922-6936, July 2019, doi: 10.1109/TPEL.2018.2873793.

2.17. B. Wei, A. Marzàbal, J. Perez, R. Pinyol, J. M. Guerrero and J. C. Vásquez, "Overload and Short-Circuit Protection Strategy for Voltage Source Inverter-Based UPS," in IEEE Transactions on Power Electronics, vol. 34, no. 11, pp. 11371-11382, Nov. 2019, doi: 10.1109/TPEL.2019.2898165.

2.18. Babak Arbab-Zavar, Emilio J. Palacios-Garcia, Juan C. Vasquez, Josep M. Guerrero, "LoRa Enabled Smart Inverters for Microgrid Scenarios with Widespread Elements," in Electronics, 2021, 10(21), 2680; https://doi.org/10.3390/electronics10212680.

2.19. E. J. Palacios-Garcia, B. Arbab-Zavar, J. C. Vasquez and J. M. Guerrero, "Open IoT Infrastructures for In-Home Energy Management and Control," 2019 IEEE 9th International Conference on Consumer Electronics (ICCE-Berlin), 2019, pp. 376-379, doi: 10.1109/ICCE-Berlin47944.2019.8966225.

2.20. Babak Arbab-Zavar, Suleiman M. Sharkh, Emilio J. Palacios-Garcia, Juan C. Vasquez, Josep M. Guerrero, "Reducing Detrimental Communication Failure Impacts in Microgrids by Using Deep Learning Techniques," Sensors, 2022, 22(16), 6006; https://doi.org/10.3390/s22166006.

2.21. Y. Yu et al., "A Reference-Feedforward-Based Damping Method for Virtual Synchronous Generator Control," in IEEE Transactions on Power Electronics, vol. 37, no. 7, pp. 7566-7571, July 2022, doi: 10.1109/TPEL.2022.3152358.

2.22. Y. Yu, S. K. Chaudhary, S. Golestan, G. D. A. Tinajero, J. C. Vasquez and J. M. Guerrero, "An Overview of Grid-Forming Control for Wind Turbine Converters," IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society, 2021, pp. 1-6, doi: 10.1109/IECON48115.2021.9589838.

2.23. Y. Yu et al., "A Comparison of Fixed-Parameter Active-Power-Oscillation Damping Solutions for Virtual Synchronous Generators," IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society, 2021, pp. 1-6, doi: 10.1109/IECON48115.2021.9589433.

2.24. Q. -C. Zhong, P. -L. Nguyen, Z. Ma and W. Sheng, "Self-Synchronized Synchronverters: Inverters Without a Dedicated Synchronization Unit," in IEEE Transactions on Power Electronics, vol. 29, no. 2, pp. 617-630, Feb. 2014, doi: 10.1109/TPEL.2013.2258684.

2.25. T. Shintai, Y. Miura and T. Ise, "Oscillation Damping of a Distributed Generator Using a Virtual Synchronous Generator," in IEEE Transactions on Power Delivery, vol. 29, no. 2, pp. 668-676, April 2014, doi: 10.1109/TPWRD.2013.2281359.

2.26. S. Wang, J. Hu and X. Yuan, "Virtual Synchronous Control for Grid-Connected DFIG-Based Wind Turbines," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 3, no. 4, pp. 932-944, Dec. 2015, doi: 10.1109/JESTPE.2015.2418200.

2.27. Lashab, D. Sera, J. Martins and J. M. Guerrero, "Dual-Input Quasi-Z-Source PV Inverter: Dynamic Modeling, Design, and Control," in IEEE Transactions on Industrial Electronics, vol. 67, no. 8, pp. 6483-6493, Aug. 2020, doi: 10.1109/TIE.2019.2935927.

2.28. Lashab, D. Sera, F. Hahn, L. Juarez Camurca, M. Liserre and J. M. Guerrero, "A Reduced Power Switches Count Multilevel Converter-Based Photovoltaic System With Integrated Energy Storage," in IEEE Transactions on Industrial Electronics, vol. 68, no. 9, pp. 8231-8240, Sept. 2021, doi: 10.1109/TIE.2020.3009594.

3.       Presentations

3.1.     Microgrid as a way of life by Prof. Josep M Guerrero https://www.youtube.com/watch?v=T-y8rW6oQq8

4.       Laboratory introduction Handbook (provided via Moodle)