School of
Information Technology and Electrical Engineering

Speaker: Dr Negareh Ghasemi
Seminar Date: Wed, 15/11/2017 - 10:00
Venue: Room 302, building 7 (Parnell)
Host: Prof Tapan Saha

Seminar Type:  ITEE Research Seminar

Abstract: 

Power Electronics and Energy Conversion system is a key technology for many applications such as renewable energy systems, energy harvesting and Pulsed Power. Power Electronics is mainly based on solid state semiconductor devices for the Energy Conversion, control and processing of electric power. Wide bandgap (WBG) semiconductors have the capability to operate at higher voltages, temperatures and switching frequencies with greater efficiencies compared to the existing switching devices and have revolutionized Power Electronics technologies for new and emerging applications since 2014. Power Electronics technology can be utilized in 1) low voltage and low power systems, 2) high voltage and high power systems or 3) Pulsed Power systems. Fast pulsed electric field and high frequency Energy Conversion systems have been recognized as the most effective systems for a number of applications such as waste-water treatment, food processing, bio-energy and bioscience. A new field of research opens when the transient time of high voltage pulses and high quality high frequency Power Electronics systems can be optimized. The Pulsed Power community has not been strongly involved in the development of Pulsed Power system based on Power Electronics technology. The enhancement of Pulsed Power systems has very significant environmental implications. If a sub-nanosecond Pulsed Power converter can be developed then there are likely to be substantial benefits in the areas of plasma physics, electro-chemical and biological & biomedical systems. Different applications have different requirements for the optimum values of pulse parameters, and an ongoing challenge for research into Pulsed Power and high frequency converters is to create circuit designs and components that deliver pulses with the optimum parameters for specific applications.

Biography: 

Dr Negareh Ghasemi received her PhD degree in 2013 from Queensland University of Technology (QUT) in Electrical Engineering. She is currently a lecturer at power engineering discipline at QUT. She has been teaching several electrical units including Power Systems and Machines, Introduction to Design and Professional Practice, Energy Supply and Delivery, Power Electronics, Industrial Electronics. Her research interests include, Power Electronics, Energy Conversion systems and Energy Harvesting. She is an active member of Queensland IEEE Women in Engineering Group.