Resume

Download my Resume here

Education

• Ph.D. in Electrical Engineering, University of Florida, 2019
• B.S.E.E, Zhejiang University, 2015 (Honors)

Work Experience

09/2015-12/2019 Research Assistant, ECE Department, University of Florida

Research on the Common Mode Noise Measurement and Reduction for the AC/DC Flyback Adapters of Consumer Electronics with Touchscreens, supported by Google Inc. (09/2015 – 05/2017)

• Proposed techniques of the modeling, measurement and reduction of common mode (CM) noise for multi-winding switching transformers.
• Investigated and proposed a sensitivity test setup for the touchscreens of consumer electronics interfered by the CM voltages of power adapters.

Research on Transformer and EMI Filter Design for High Power-Density Flyback Power Adapters, supported by Google Inc. (08/2017 – 12/2019)

• Proposed a guideline to optimize the winding structure of the switching transformers to minimize the copper loss and the CM EMI noise.
• Eliminated the near field couplings in high power-density power converters.

05/2017-08/2017 Technical Intern, Hardware Team, Google Inc.

Research on EMI Filter Size Reduction for the AC/DC Flyback Adapters

• Built an EMI diagnosis test platform complying with EN55022 standard.
• Proposed a dc-bus EMI filter topology with smaller size and lower power loss than conventional EMI filters.

Skills

• Circuit Design: Matlab, Saber, ADS
• Magnetics Design: Ansys Maxwell / HFSS
• Measurement Devices: Network Analyzer, Spectrum Analyzer

Selected Publications

(From 2017 to 2019, 16 technical papers have been published in IEEE Transactions and conferences.)

1. Y. Li, H. Zhang, S. Wang, H. Sheng, C. P. Chng and S. Lakshmikanthan, “Investigating Switching Transformers for Common Mode EMI Reduction to Remove Common Mode EMI Filters and Y Capacitors in Flyback Converters,” in IEEE Journal of Emerging and Selected Topics in Power Electronics, Dec. 2018.
2. Y. Li, L. Yang, S. Wang, H. Sheng, S. Lakshmikanthan and L. Jia, “Investigation of a DC bus differential mode EMI filter for AC/DC power adapters,” 2018 IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, 2018. (Received the only outstanding presentation award in EMC session.)
3. Y. Li, S. Wang, H. Sheng, C. P. Chng and S. Lakshmikanthan, “Investigating CM Voltage and Its Measurement for AC/DC Power Adapters to Meet Touchscreen Immunity Requirement,” in IEEE Transactions on Electromagnetic Compatibility, Aug. 2018.
4. Y. Li, S. Wang, H. Sheng and S. Lakshmikanthan, “Investigate and Reduce Capacitive Couplings in a Flyback Adapter with a DC-Bus Filter to Reduce EMI,” in IEEE Transactions on Power Electronics. Early Access. Dec. 2019.

Patents

1. H. Sheng, Y. Li, S. Wang, and S. Lakshmikanthan, “Common-mode Noise Reduction”, Granted Nov. 2018. US10141100B2.
2. H. Sheng, Y. Li, S. Wang, and S. Lakshmikanthan, “DC Bus Filter Topologies with Improved High Frequency Performance for Isolated Power Adapters”. (Pending)