Abstract of the talk: The talk aims to discuss two different kinds of ripple problem found in modern day power electronic systems and their potential solutions. Low-frequency ripple is a common issue in power electronic converters, particularly in single-phase systems, where it leads to efficiency losses and reduces the lifespan of passive components like capacitors. Active power decoupling methods address this by incorporating auxiliary circuits that absorb and re-inject ripple energy, effectively suppressing low-frequency ripples without the need for bulky passive components.

 

Meanwhile, using SiC devices could bring additional gains in efficiency and power density but its fast switching brings problems such as voltage overshoot and high-frequency ringing, which degrade performance and electromagnetic compatibility. Active gate driving techniques generates precisely controlled gate signals, can significantly reduce overshoot and ringing by tailoring the switching behavior dynamically, achieving improved efficiency and reduced electromagnetic interference compared to conventional passive solutions.

 

 

Speaker Biodata:  Dr. Pramit Nandi is currently a Postdoctoral Researcher in the Electrical Energy Management Research Group at the University of Bristol. He received his PhD from the Department of Electronics and Electrical Engineering at the Indian Institute of Technology Guwahati, India. His research interests include power electronics applications in power systems, renewable energy integration, and power converter technologies. Dr. Nandi’s work focuses on innovative solutions for challenges such as low-frequency ripple suppression and enhanced efficiency in power conversion through advanced gate driving techniques.