ICPEA 2019 25-27 SEPTEMBER 2019

The 4th International Conference on Power Electronics and their Applications 2019 (ICPEA’19)



Prof Atif Iqbal

Qatar University, Doha, Qatar

Grid-Connected Solar PV Inverters-Challenges and Requirements


Grid-connected photovoltaic (PV) systems are one of the fastest growing renewable energy conversion systems in the world. In fact it has increased more than 7 times in the in recent past (from 5.4GW to 40GW of installed capacity). The main reason for this remarkable development is the cost reduction of PV modules and the introduction of economic incentives or subsidies due to growing environmental concerns. This has made PV generated electrical energy cost-effective and competitive in some regions of the world with good sun radiation conditions. Projections show that PV technology costs will continue declining in the next decade, making large-scale PV systems more and more attractive.

Power electronics, used as an interface between the PV generation sources and the electricity grid play an important role in facilitating an efficient and optimal energy transfer, as well as increasing system reliability and utilizing an economically viable solution. However, despite the clear trend in the increase of power rating of PV plants, power converter interfaces for large-scale PV systems have not evolved much and are concentrated in a couple of system configurations and converter topologies. The talk will focus on the existing inverter topologies, their classifications and operations. The control of grid connected inverters and synchronization requirements are discusses. The present challenges and requirements related to grid-connected

inverters is presented. The issue related with Partial shading and MPPT requirement is discussed in the talk. The new class of PV inverters namely Z-Source, quasi Z Source and their cascaded structure is elaborated. The future directions of research is also given.


Atif Iqbal, Fellow IET (UK), Fellow IE (India) and Senior Member IEEE, PhD (UK)- Associate Editor IEEE Tran. On Industry Application, Editor-in-Chief, I’manager journal of Electrical Engineering, Associate Professor at Electrical Engineering, Qatar University and Former Full Professor at Electrical Engineering, Aligarh Muslim University (AMU), Aligarh, India. Recipient of Outstanding Faculty Merit Award AY 2014-2015 and Research excellence award at Qatar University, Doha, Qatar. He received his B.Sc. (Gold Medal) and M.Sc. Engineering (Power System & Drives) degrees in 1991 and 1996, respectively, from the Aligarh Muslim University (AMU), Aligarh, India and PhD in 2006 from Liverpool John Moores University, Liverpool, UK. He

has been employed as a Lecturer in the Department of Electrical Engineering, AMU, Aligarh since 1991 where he served as Full Professor until Aug. 2016. He is recipient of Maulana Tufail Ahmad Gold Medal for standing first at B.Sc. Engg. Exams in 1991 from AMU. He has received best research papers awards at IEEE ICIT-2013, IETSEISCON-2013, and SIGMA 2018. He has published widely in International Journals and Conferences his research findings related to Power Electronics and Renewable Energy Sources. Dr. Iqbal has authored/co-authored more than 300 research papers and one book and three chapters in two other books. He has supervised several large R&D projects. His principal area of research interest is Modeling and Simulation of Power Electronic Converters, Control of multi-phase motor drives and Renewable Energy sources.

Dr. Jaroslaw Guzinski

Gdansk University of Technology, Poland

Variable Speed Ac Drives With Inverter Output Filters


The electric drive is a multidisciplinary problem due to the complexity of the contained systems. The high performance and high efficiency of electric drives can be obtained only in the case of using  controllable variable speed drives with sophisticated control algorithms. In the industry, the widely used adjustable speed electrical drives are systems with an induction motor and voltage inverter. The inverter output voltage has a rectangular shape and causes high rates of rises of dv/dt so in many applications it is necessary to apply filters between the inverter and the motor. The filter use at the inverter output can strongly influence on the proper operation of advanced drive control systems. The application of an inverter output filter have to be considered in the control algorithm and estimation procedures.

The tutorial explains the problem of drive systems with output filters, justifying the need for their application. Moreover, the aim of this tutorial is also to present a way to control a squirrel cage induction motor and estimation of variables by considering the presence of the output filter, especially for drive systems without speed measurement.


Jaroslaw Guzinski received M.Sc., Ph.D. and D.Sc. degrees from the Electrical Engineering Department at Technical University of Gdansk, Poland in 1994, 2000 and 2011 respectively. Since 2016 he is Associate Professor at Gdansk University of Technology. Currently he is the head of the Department of Electric Drives and Energy Conversion. From 2006 to 2009 he was involved in European Commission Project PREMAID Marie Curie, ‘Predictive Maintenance and Diagnostics of Railway Power Trains’, coordinated by Alstom Transport, France. From 2010 to 2014 he was a consultant in the prestigious project of integration of renewable energy sources and smart grid for building unique laboratory LINTE^2. In 2012 he was awarded by Polish Academy of Sciences – Division IV: Engineering Sciences for his monograph “Electric drives with induction motors and inverters output filters - selected problems”. He obtained scholarships in the Socrates/Erasmus program, and was granted with three scientific projects supported by the Polish government in the area of sensorless control and diagnostic for drives with LC filters. He has authored and co-authored more than 150 journal and conference papers. He is an inventor of some solutions for speed sensorless drives with LC filters (six patents). His interests include sensorless control of electrical machines, multiphase drives (5-phase), inverter output filters, renewable energy, and electrical vehicles. Dr. Guzinski is a Senior Member of IEEE.




Fırat Üniversitesi

University of Firat, Elazig, Turkey


University of Djelfa, Algeria


University of Medea, Algeria



Applied Automation and Industrial

Diagnostics Laboratory, 

University of Djelfa, Algeria


Gas Turbine Joint Research Team

University of Djelfa

 Djelfa, Algeria