POST COVID-19 TRENDS IN ENERGY: WHAT CAN WE EXPECT?

Prof. Sivanappan Kumar, Asian Institute of Technology, Thailand

Abstract:

Keeping the focus of ICPEI 2020, which is on power, energy and innovation, the presentation aims to discuss the developments in the energy arena leading to the 2030s. This coming decade could well be an important watershed in the energy use for the coming decades – in supply side; transmission, distribution, storage side; and demand side – as major transitions will have to be made. Taking all this into consideration, this presentation will, therefore, consider the developments and progress in terms of energy access, renewable energy and energy efficiency in the immediate past,  trends in energy consumption impacting economic development and environment, SDG 7 goals and targets, and the various innovations happening in energy technology, its applications and services, currently spearheaded by the role of artificial intelligence and internet of energy that impacts all sectors of the society. The impact of covid-19 on human behavior has been far reaching, and has also influenced the use of energy. Finally, the role and activities of educational institutions and societies, to address the growing and different needs of the various generations will also be presented. 

Common-Mode Voltage Elimination by Modulation Techniques for Two-and Three-level Voltage-Source Inverters

Assoc.Prof.Dr. Yuttana Kumsuwan, Chaing Mai University, Thailand

Abstract:

The speech covers a practical introduction to dc-ac two-and three-level voltage-source inverters (VSIs) with AC load applications. It will guide audience through all fields of AC motor drive system analysis, modeling, simulation, and research. It mainly focuses on the common-mode (CM) voltage mitigation by novel nine-switch VSI fed an open-end winding AC motor and twelve-switch three-level VSI with PWM techniques. This presentation will explain how various modulation strategies are utilized to eliminate the CM voltage in these inverters. Throughout, important concepts are shown with the Matlab/Simulink simulations, and modeling guidance is provided with voltages, and current waveforms. To help the audience understand the principle and operation of two-and three-level VSIs with modulation techniques, some case studies are given in this presentation. This presentation not only serves as a valuable reference for academic researchers, practicing engineers, and consultants, but also as a modeling for graduate and senior-year undergraduate students.