I am currently an iPhone/iPad System Power Integrity & EMI Engineer at Apple Inc., Austin, TX, USA. I received my Ph.D. degree in Power Electronics & EMI from the University of Florida in 2023 supervised by Prof.Shuo Wang. During my Ph.D. study, I worked closely with Honggang Sheng and Srikanth Lakshmikanthan at Google Inc. on Google’s consumer products (AC/DC power adapters, Wireless chargers, Pixel phones, Earbuds, etc.). I was the recipient of the Best Presentation Award from the 2023 IEEE Applied Power Electronics Conference and Exposition (APEC). I have over 30 publications in IEEE leading Transactions/Journal/Conference in my 4 years of Ph.D. study. My research in power electronics EMI is widely cited and prompted in the IEEE Industrial Electronics Society Newsletter (>10k members all over the world).

I received my B.Eng. in Electrical Engineering and Automation from Zhejiang University, Hangzhou, China in June 2019. During my undergraduate study, I was honored to be awarded “Top-ten Outstanding University Students at Zhejiang University (Lantian Academy) (10/4000+)” in 2017 and “Outstanding Graduates of Zhejiang University” in 2019.

In my daily life, I enjoy swimming, traveling as well as photographing a lot, you can see the pictures that I took along the journey in Photo show.

Email: zhedongma@gmail.com. Find me on Researchgate, Google Scholar, and Linkedin.

Volunteer Service

Reviewer (review >20 papers/year) for IEEE Transactions on Power Electronics, IEEE Transactions on Industrial Electronics, IEEE Transactions on Industry Applications, IEEE Transactions on Electromagnetic Compatibility, IEEE Open Journal of Power Electronics, etc.

PC Member for 2023 European Symposium on Reliability of Electron Devices, Failure Physics & Analysis (ESREF 2023).

Volunteer for 2019 IEEE Energy Conversion Congress and Exposition (ECCE), Baltimore, MD.

Lab Safety Manager at Power Electronics and Electrical Power Research Lab at the University of Florida since 2020.

Mentoring three undergraduate students at UFL on the senior project design about wireless charging coil design and EMI filter design.

Research Areas

Power electronics, EMI/EMC, Wireless charging, Magnetic components, NFC antenna design, etc.

Publications

• Z. Ma, S. Wang, Q. Huang and Y. Yang, “A Review of Radiated EMI Research in Power Electronics Systems,” in IEEE Journal of Emerging and Selected Topics in Power Electronics, Early Access, 2024.

• Z. Ma, S. Wang, H. Sheng and S. Lakshmikanthan, “Modeling, Analysis and Mitigation of Radiated EMI Due to PCB Ground Impedance in a 65 W High-Density Active-Clamp Flyback Converter,” in IEEE Transactions on Industrial Electronics, vol. 70, no. 12, pp. 12267-12277, Dec. 2023.

• Z. Ma and S. Wang, “Prediction and Measurement Techniques for Radiated EMI of Power Converters with Cables,” in Chinese Journal of Electrical Engineering, December 2022.

• Z. Ma, Y. Li, S. Wang, H. Sheng, and S. Lakshmikanthan, “Investigation and Reduction of EMI Noise due to the Reverse Recovery Currents of 50/60Hz Diode Rectifiers ,” in IEEE Journal of Emerging and Selected Topics in Industrial Electronics, July 2022.(Paper advertised on the journal website & Prompted in IEEE Industrial Electronics Newsletter as a Feature Article)

• Z. Ma, Y. Lai, Y. Yang, Q. Huang, and S. Wang, “Review of Radiated EMI Modeling and Mitigation Techniques in Power Electronics Systems,” in Proceedings of IEEE Applied Power Electronics Conference and Exposition, 2023.(Best Presentation Award)

• Z. Ma, Y. Lai, Q. Huang, Y. Yang, and S. Wang, “Investigation and Mitigation of Radiated EMI due to Near-field Coupling in a High-density Active-clamp Flyback Power Adapter,” in Proceedings of IEEE Energy Conversion Congress and Exposition (ECCE), 2023.

• H. Wu, Y. Lai, Z. Ma, Y. Yang, Q. Huang, and S. Wang, “Reduction of Copper Loss of Planar Transformers Based on Optimized Width Winding,” in Proceedings of IEEE Energy Conversion Congress and Exposition (ECCE), 2023.

• Q. Huang, Y. Li, Z. Ma, Y. Yang, Y. Lai, and S. Wang, “RLC Balance Technique of Transformer to Reduce CM EMI for Isolated DC-DC Converters,” in Proceedings of IEEE Energy Conversion Congress and Exposition (ECCE), 2023.

• Y. Lai, S. Wang, Q. Huang, Y. Yang, Z. Ma, and B. Zhang, “Investigation of Low-Frequency Radiated EMI of the Three Phase Electric Motor System,” in Proceedings of IEEE Energy Conversion Congress and Exposition (ECCE), 2023.

• Y. Yang, Q. Huang, Z. Ma, S. Wang, Z. Xu, L. Jia, and S. Lakshmikanthan, “Improve the Noise Immunity of In-band Communications in Qi Wireless Charging Systems with A Synchronous Rectifier Switching Scheme to Double the Depth of Shift-Keying Modulation,” IECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society, Singapore, 2023.

• Y. Yang, Q. Huang, Z. Ma, S. Wang, Z. Xu, L. Jia, and S. Lakshmikanthan, “A Phase-shift Switching Scheme of Charger Inverter to Improve In-band Communication Reliability in Qi Wireless Charging System,” IEEE Wireless Power Technology Conference and Expo 2023.

• Z. Ma, Q. Huang, Y. Yang, and S. Wang, “A Wireless Charging and NFC Integration Technique Based on High-frequency Impedance Characterization of Wireless Charging Coils,” in Proceedings of IEEE Applied Power Electronics Conference and Exposition, 2023.

• Y. Lai, Y. Yang, Z. Ma, Q. Huang, S. Wang, and Z. Luo, “Development of Simulation Prediction Techniques for Low-Frequency Emissions,” in Proceedings of IEEE Applied Power Electronics Conference and Exposition, 2023.

• Q. Huang, Y. Yang, Z. Ma, Y. Lai and S. Wang, “Transformer Structure of Bifilar Primary Winding with Advanced Common Mode Noise Attenuation Performance for Isolated DC-DC Converters,” in Proceedings of IEEE Applied Power Electronics Conference and Exposition, 2023.

• Z. Ma, Y. Yang, J. Yao, S. Wang, H. Sheng, L. Jia, Z. Xu, and S. Lakshmikanthan, “Radiated EMI Prediction in Power Converters with Power Cables Based on Cable Antenna Voltage Gain Extraction,” in Proceedings of IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity, 2022.

• Z. Ma, S. Wang, H. Sheng, and S. Lakshmikanthan, “Modeling and Reduction of Radiated EMI due to Ground Impedance in a High-density Active-clamp Flyback Power Adapter,” in Proceedings of IEEE Applied Power Electronics Conference and Exposition, 2022.

• Z. Ma, J. Yao, S. Wang, H. Sheng, S. Lakshmikanthan and D. Osterhout, “Radiated EMI Reduction with Double Shielding Techniques in Active-clamp Flyback Converters,” in Proceedings of IEEE International Joint EMC/SI/PI and EMC Europe Symposium, 2021, pp. 1064-1069.

• J. Yao, Z. Ma, Y. Lai and S. Wang, “A Survey of Modeling and Reduction Techniques of Radiated EMI in Power Electronics,” in Proceedings of IEEE International Joint EMC/SI/PI and EMC Europe Symposium, 2021.

• Z. Ma, J. Yao, Y. Lai, S. Wang, H. Sheng, and S. Lakshmikanthan, “Investigate and Improve the Distorted Waveforms for Core Loss Measurement with Arbitrary Excitations,” in Proceedings of IEEE Applied Power Electronics Conference and Exposition, 2021, pp. 1736-1742.

• J. Yao, Y. Lai, Z. Ma and S. Wang, “Advances in Modeling and Reduction of Conducted and Radiated EMI in Non-isolated Power Converters,” in Proceedings of IEEE Applied Power Electronics Conference and Exposition, 2021, pp. 2305-2312.

• J. Yao, Y. Lai, Z. Ma and S. Wang, “Investigation of Noise Spectrum and Radiated EMI in High Switching Frequency Flyback Converters,” in Proceedings of IEEE Applied Power Electronics Conference and Exposition, 2021, pp. 2265-2270.

• Z. Ma, Y. Li, S. Wang, H. Sheng, S. Lakshmikanthan and D. Osterhout, “Investigation and Reduction of a Low-Frequency EMI Noise of AC/DC Power Adapters with Diode Bridge as Input Rectifier,” in Proceedings of IEEE 9th International Power Electronics and Motion Control Conference, 2020, pp. 3085-3091.

• J. Yao, Y. Li, Z. Ma and S. Wang, “Advances of Modeling and Reduction of Conducted and Radiated EMI in Flyback Converters,” in Proceedings of IEEE Energy Conversion Congress and Exposition, 2020, pp. 3362-3369.

• Z. Ma, J. Yao, Y. Li, and S. Wang, “Comparative Analysis of Magnetic Core Loss Measurement Methods with Arbitrary Excitations,” in Proceedings of IEEE Energy Conversion Congress and Exposition, Baltimore, MD, USA, 2019, pp. 4125-4130.

• J. Yao, M. El-Sharkh, Y. Li, Z. Ma, S. Wang and Z. Luo, “Investigation of Radiated EMI in Non-isolated Power Converters with Power Cables in Automotive Applications,” in Proceedings of IEEE Energy Conversion Congress and Exposition, Baltimore, MD, USA, 2019, pp. 6957-6964.

Patents

• S. Wang, Z. Ma and Q. Huang, “Wireless Charging and Near-field Communication (NFC) Integration,” US Patent (filed).

Honors/Awards

Best Presentation Award, IEEE Applied Power Electronics Conference and Exposition (APEC), 2023

Dora G. Partheniades Fellowship Award, University of Florida. 2021 (For contributions to green/renewable energy research)

Awards of Outstanding Graduates of Zhejiang University (top 10%). 2019

Top-ten Outstanding University Students, Zhejiang University (Lantian Academy)(10/4000+). 2017

Awards of Excellent Student, Zhejiang University. 2018

Scholarship for Academic Excellence of Zhejiang University. 2016-2018

Awards of Outstanding Student Leader, Zhejiang University. 2017