Prof. Fang Luo Wins The 2023 Motohisa Kanda Award
Prof. Fang Luo |
Fang Luo, Empire Innovation Associate Professor and Director of the Spellman High Voltage Power Electronics Laboratory at Stony Brook University, received the 2023 Motohisa Kanda Award. This award, established in 2015, honors the most cited paper in the IEEE Transactions on Electromagnetic Compatibility (EMC) over the past five years.
The award-winning paper, “A Survey of Active EMI Filters for Conducted EMI Noise Reduction
in Power Electronic Converters”, was co-authored by Luo and Balaji Narayanasamy. Since
its publication in 2019, it has garnered the most citations (74) among papers published
in the last five years (2019-2023).
The paper presents a comprehensive survey of different Active EMI Filters (AEFs) and
their implementations for different power converters. It discusses the challenges
faced by power converter designers due to the bulky nature of passive EMI filters,
which can occupy up to 30% of the system volume. The paper explores various techniques
to reduce the noise source and thereby minimize the passive filter volume. It also
delves into the promise of AEFs in reducing the passive component volume in power
converters, with volume reductions higher than 50% reported in the past three decades.
The paper concludes by summarizing the numerous AEF implementations for conducted
EMI mitigation in power electronic converters. It emphasizes the importance of careful
selection of the appropriate AEF based on the type of converter and the type of noise
to maximize attenuation and possible volume reduction. The paper also highlights the
challenges in achieving high attenuation at lower frequencies using AEFs and discusses
various implementations that have achieved significant attenuation.
However, the paper notes that the majority of these implementations use additional
high-voltage passive elements for compensation to ensure stability or rely on inductors
either in the form of CTs for noise-sensing or voltage transformers for noise-cancellation.
It calls for novel methods that could further enhance the performance of the filter
without the need for additional high-voltage capacitors for stability improvements
or injection transformers on power lines. The paper also points out the need for more
research on the auxiliary power supply, power loss, and protection for the AEF to
enable widespread adoption.
Read “A Survey of Active EMI Filters for Conducted EMI Noise Reduction in Power Electronic
Converters”