Course info

Course Overview

Microgrids are deemed as one of the main building blocks of the smart grids; since they are able to facilitate the implementation of many smart grid functions. On the other hand, the proliferation of different nonlinear and single-phase loads in electrical systems has resulted in voltage harmonics and unbalance as two common power quality problems. In addition, harmonic resonances can be excited giving rise to a significant increase of the voltage distortion. These phenomena can cause variety of problems such as protective relays malfunction, overheating of motors and transformers and failure of power factor correction capacitors.

Therefore, in this course, measurement, compensation, and damping of such power quality problems will be addressed through several basic and advanced control methodologies. 

Learning Objectives

  • Illustrate power quality problems including harmonics, power?frequency deviations, voltage fluctuations, voltage dips, swells, interruptions, and voltage unbalance.
  • Apply various techniques for power quality improvement in microgrids including active power Injection, reactive power-sharing, harmonic current sharing and voltage regulation via smart loads.
  • Design virtual impedance loops for load sharing and power quality  Improvement.

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Course Structure

  • Lesson 1 - Introduction to Power Quality Issues in AC Microgrids2020/10/16
  • Lesson 2 - Harmonic Compensation and Reactive Power Sharing in Microgrids2020/10/22
  • Lesson 3 - Harmonic Compensation and Reactive Power Sharing in Microgrids2020/10/29


Alexander Micallef

Alexander Micallef is a Lecturer at the Department of Electrical Energy Conversion, Faculty of Engineering, University of Malta. He is Associate Editor for the IEEE Access and the IET Smart Grids journal. He is a senior member of IEEE and is involved in activities of the IEEE PES SBLCS Technical Committee. His research interests include renewable energy systems, control, and management of distributed generation and energy storage systems, AC and DC microgrids


Josep Guerrero

Josep M. Guerrero received the
B.S. degree in telecommunications engineering, the M.S. degree in electronics
engineering, and the Ph.D. degree in power electronics from the Technical
University of Catalonia, Barcelona, in 1997, 2000 and 2003, respectively. Since
2011, he has been a Full Professor with the Department of Energy Technology,
Aalborg University, Denmark, where he is responsible for the Microgrid Research
Program. From 2012 he has been a guest Professor at the Chinese Academy of
Science and the Nanjing University of Aeronautics and Astronautics; and from
2014 he has been chair Professor in Shandong University.


Juan C. Vasquez

Juan C. Vasquez  received the B.S. degree in electronics
engineering from the Autonomous University of Manizales, Manizales, Colombia,
and the Ph.D. degree in automatic control, robotics, and computer vision from
BarcelonaTech-UPC, Spain, in 2004 and 2009, respectively. In 2011, He was
Assistant Professor and in 2014, Associate Professor at the Department of
Energy Technology, Aalborg University, Denmark. In 2019, He became Professor in
Energy Internet and Microgrids and currently He is the Co-Director of the
Villum Center for Research on Microgrids (see He was a
Visiting Scholar at the Center of Power Electronics Systems (CPES) at Virginia
Tech, USA and a visiting professor at Ritsumeikan University, Japan. His
current research interests include operation, advanced hierarchical and
cooperative control, optimization and energy management applied to distributed
generation in AC/DC Microgrids, maritime microgrids, advanced metering
infrastructures and the integration of Internet of Things and Energy Internet into
the SmartGrid. Prof. Vasquez was awarded as Highly Cited Researcher
by Thomson Reuters from 2017 to 2019 and He was the recipient of the Young
Investigator Award 2019. He has published more than 450 journal papers in the
field of Microgrids, which in total are cited more than 20000 times. Prof. 
Vasquez is currently a member of the IEC System Evaluation Group SEG4 on LVDC
Distribution and Safety for use in Developed and Developing Economies, the
Renewable Energy Systems Technical Committee TC-RES in IEEE Industrial
Electronics, PELS, IAS, and PES Societies.


Mashood Nasir

Mashood Nasir received his BS degree in Electrical Engineering from UET Lahore, Pakistan and MS in Electrical Engineering from UMT Lahore, and Ph.D. in Electrical Engineering from Lahore University of Management Sciences, Pakistan in 2009 and 2011, and 2018 respectively. From 2011 to 2012, he served as a lecturer and from 2013-2014 he served as an assistant professor in the Electrical Engineering department at UMT, Lahore. From, May 2017 to Nov 2017 he was a visiting Ph.D. researcher at the Microgrid Laboratory in Aalborg University Denmark. From 2018-2019 he served as an assistant professor at Lahore University of Management Science. Currently, he is a postdoctoral research fellow at Aalborg University Denmark. His research interests mainly include but not limited to power electronics, electrical machines and drives, grid integration of alternate energy resources, electrochemical energy conversion and battery storage systems and AC/DC/Hybrid microgrids.