ECE Research Seminar Friday April 26 12-1pm ct

April 22, 2024

ECE Research Seminar

April 26, 2024, Friday, 12:00 – 1:00 pm, Simrall 104

Common-Mode EMI Characterization and Mitigation in Networked Power Electronics-Enabled Power Systems

Ashik Amin |

 Abstract: Rapidly increasing medium-voltage power electronics applications in emerging industry systems, including electrical ships, more electric aircraft, and microgrids, have emphasized the critical need for highly energy-efficient, reliable, and fast switching devices. As a result, Wide-Bandgap (WBG) devices have gained considerable interest over conventional silicon-based switches in recent years. For example, emerging WBG devices have unlocked new dimensions for modern motor drive systems with increased efficiency, switching frequency, and superior power density. Commercially developed WBG devices such as Silicon Carbide (SiC) and Gallium Nitride (GaN) offer promising opportunities to meet those pressing requirements. My research investigates the common-mode electromagnetic interference (EMI) in networked power electronics-enabled power systems. The effect of common-mode EMI in multiple interconnected power converters is theoretically modeled. Common-mode EMI phase information is a vital degree of freedom in EMI study that has not been considered in the state of the art. The EMI phase information reduces EMI without implementing any active or passive filter circuit. A cost-effective and less complex method is introduced to reduce EMI in a power electronics network. The work also includes developing a hybrid filter with a passive and a virtual filter. The virtual filter reduces the passive common mode choke weight and volume significantly. Finally, a simplified switching node capacitance characterization technique for packaged WBG SiC is introduced.

Mr. Ashik Amin is a Ph.D. candidate in Electrical and Computer Engineering at Mississippi State University. He received his B.S. degree in electrical and electronic engineering from Bangladesh University of Engineering and Technology, Dhaka, Bangladesh, in 2014. He is currently pursuing his PhD degree in power electronics and EMI applications under the supervision of Professor Seungdeog Choi. He was a research intern with ABB US Corporate Research Center and General Motors in 2022 and 2023. His research interest includes the investigation of EMI in wide bandgap power modules, characterization of wide bandgap devices, DC-AC conversion systems, and EMI filter designing. He aims to solve EMI noise problems in mission critical applications, such as E-ship, and unmanned electric aircraft.


* For further information      contact:  Dr. Jenny Du | | 5-2035

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The Department of Electrical and Computer Engineering at Mississippi State University consists of 27 faculty members (including seven endowed professors), seven professional staff, and over 700 undergraduate and graduate students, with approximately 100 being at the Ph.D. level. With a research expenditure of over $14.24 million, the department houses the largest High Voltage Laboratory among North American universities.