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Pilawa Research Group

Professor Robert Pilawa-Podgurski's Research Group at UC Berkeley

Awards

Rod Bayliss III Wins Outstanding Grad Student Instructor Award!

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Rod Bayliss III, a fifth-year PhD student advised by Dr. Robert Pilawa-Podgusrki, won a 2024 Outstanding Graduate Student Instructor Award for his role as a GSI in the inaugural offering of EE 213B, Power Electronics Design, taught by Dr. Jessica Boles. This award honors UC Berkeley GSIs each year for their outstanding work in teaching on the Berkeley campus. The semester before the class was offered, Rod designed and tested a custom buck converter for the class. The students used this board to create their own buck converters, learning practical power converter design and testing skills.

BPEC Director Robert Pilawa-Podgurski Elevated to IEEE Fellow

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BPEC Director Robert Pilawa-Podgurski was elevated to IEEE fellow in the 2024 class, “For contributions to hybrid switched capacitor power converters”. IEEE Grade of Fellow is conferred by the Board of Directors upon a person with an extraordinary record of accomplishments in any of the IEEE fields of interest. The total number of fellows selected in any one year does not exceed one-tenth of one percent of the total voting Institute membership. Robert received his award at IEEE ECCE in Phoenix this past year. This is a great recognition of the all the hard work by past and present BPEC students!

Yicheng Zhu receives Teaching Effectiveness Award

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EECS grad Yicheng Zhu has received a Teaching Effectiveness Award for 2024.

The Graduate Division’s Teaching Effectiveness Award for GSIs honors those who devise solutions to teaching or learning problems they have identified in their classes and write them up in a one-page essay. These essays are published on the GSI Center website for use by instructors.

Zhu’s essay, “Fostering Student Engagement: The Power of Live Class Demonstrations,” emphasizes his approach to enhancing student engagement in large lecture formats. Through the implementation of interactive group activities and targeted feedback mechanisms during the 2023 semester, he successfully created a more inclusive environment that encouraged student participation and fostered a deeper understanding of the material.

Yicheng Zhu is a postdoctoral scholar and Bakar Innovation Fellow advised by Robert Pilawa-Podgurski.

Submitted by nluechin on October 17, 2024

https://eecs.berkeley.edu/news/vivek-bharadwaj-and-yicheng-zhu-receive-teaching-effectiveness-award/

Francesca Giardine and Kelly Fernandez win Best Paper Award at ECCE – Europe

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Graduate students Francesca Giardine, Kelly Fernandez (PhD, Fall 2023), along with Dr. Robert Pilawa-Podgurski have won Best Paper Award at IEEE Energy Conversion Conference and Expo – Europe.

They presented A Two-Stage Non-Isolated Hybrid Switched-Capacitor Microinverter Utilizing a Fixed-Ratio Resonant DC-DC Stage with Startup Functionality and Flying Capacitor Multilevel DC-AC Stage. Their work demonstrated a 500W two-stage microinverter solution for residential scale solar that uses exclusively hybrid switched-capacitor converter topologies to convert a 35V DC voltage to a 240V AC voltage. The hardware prototype achieved a competitive power density and efficiency, meeting the growing need for compact solutions for residential-scale renewables.

The paper was presented at ECCE – Europe in Darmstadt, Germany. ECCE brings together academics and industry professionals from around the world to exchange ideas about the energy transition. The best papers were chosen based on the quality of the technical results, paper, and presentation.

Submitted by Sarah Douglas on September 5, 2024

https://bpec.berkeley.edu/pilawa-group-graduate-students-win-best-paper-award-at-ecce-europe/

Rahul Iyer and Tahmid Mahbub Win Best Paper Award at IEEE INTELEC 2024

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Rahul K. Iyer, S. Tahmid Mahbub, and Robert C.N. Pilawa-Podgurski have won the Best Student Paper Award at the 2024 IEEE International Communications Energy Conference (INTELEC) for their paper “Quasi- Two-Level Switching for Active Balancing of Flying Capacitor Multilevel Converters Under Light-Load Conditions” (https://ieeexplore.ieee.org/document/10678933/)

Recent work in the Pilawa group has highlighted the design of “active-balancing” controllers to ensure the safe operation of high-performance Flying Capacitor Multilevel (FCML) converters during system transients. This work builds on broader efforts to study the converter dynamics and design stable high-bandwidth controllers. In particular, this work highlights techniques to ensure stable converter operation when the load current is small. Compared to prior work relying on Phase-Shifted Pulse-Width Modulation, the proposed switching scheme enables active balancing at average load currents approaching and equal to zero. The conference paper and oral presentation given at IEEE INTELEC 2024 highlight the proposed switching and control methods and showcase the practical implementation of the controller on industry-standard digital signal processor hardware.

They are continuing to work on additional characterization of the balancing controller at different operating conditions, and aim to apply the proposed technique to demonstrate safe startup of the converter at light-load conditions.

Submitted by Sarah Douglas on October 20, 2024

https://bpec.berkeley.edu/rahul-iyer-and-tahmid-mahbub-win-best-paper-award-at-ieee-intelec-2024/

Prof. Robert Pilawa-Podgurski Receives 2024 Spark Award from Bakar Fellows Program

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Prof. Robert Pilawa-Podgurski has received the 2024 Spark Award from Bakar Fellows Program, with Dr. Yicheng Zhu as his Innovation Fellow. Their awarded research proposal, titled “Powering the AI Revolution: A New Voltage Regulator Enabling Direct 48-V-to-1-V Vertical Power Delivery for Next-Generation Ultra-High-Power Processors,” aims to make use of innovative tools and techniques designed in Prof. Pilawa’s lab to develop a hybrid switched-capacitor voltage regulation module for ultra-high-power processors that can achieve a 2x reduction in power conversion losses and a 4x reduction in physical size compared to state-of-the-art commercial products. This could reduce overall data center power usage by almost ten percent, benefiting both the environment and businesses.

The Bakar Fellows Program has been committed to expanding access to entrepreneurship since its inception in 2012, providing funding, resources, and mentorship to faculty, graduate students, and, most recently, undergraduates. This year marks the beginning of a new partnership with the Academic Innovation Catalyst (AIC), a new deep tech funding platform founded by Matt and Lisa Sonsini. Initially, AIC will join forces with the Bakar Fellows program to allocate grants to Berkeley faculty immersed in deep technology exploration, particularly in climate technology. Grant recipients will receive $300,000 over three years for market research, prototype development and other commercialization activities, in line with the standard Bakar Fellows award amount and duration. AIC envisions expanding this pilot initiative across UC Berkeley and beyond, fostering innovation on a broader scale within the academic community. The inaugural recipients of the AIC grants are Robert Pilawa-Podgurski, a UC Berkeley Electrical Engineering & Computer Sciences professor, and Zakaria Al Balushi, a UC Berkeley Materials Science and Engineering assistant professor.

Dr. Yicheng Zhu Receives Ross N. Tucker Memorial Award

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Post-doctoral scholar Dr. Yicheng Zhu has received a Ross N. Tucker Memorial Award for 2024.

The Tucker Award is given to recognize superior work and scholarship in the characterization, development and/or use of semiconductor, magnetic, optical or electronic materials by a graduate student or students pursuing such areas of inquiry. This award memorializes Dr. Ross N. Tucker, who contributed significantly to the advancement of the technology of materials used in semiconductor electronics. More details about this award can be found on the EECS Department website. Dr. Zhu’s thank you video can be viewed here. (edited) 

Ben Liao wins Best Presentation Award at 2024 IEEE PECI

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EE researcher Ben Liao, working with Professor Robert Pilawa-Podgurski, has received the Best Presentation Award at the 2024 IEEE Power and Energy Conference at Illinois (PECI) – a student-directed power and energy conference held annually at the University of Illinois at Urbana-Champaign. The PECI Best Presentation Award is determined both by conference directors and input from attendees.

Ben received the Best Presentation Award for his work on designing and building a high-power, electronically-controlled, modular resistive load bank. The proposed design overcomes testing limitations in commercial solutions when characterizing state-of-the-art converters. The architecture can easily be extended and modified to suit various other applications where an electronically-controlled resistive load is desired. For more information, please consult the full paper, available at this link.

Ben Liao (left) accepts the Best Presentation Award at 2024 IEEE PECI from Conference Co-Directors Anubhav Bose (center) and Raya Mahony (right).

Berkeley EECS wins Best Presentation Awards at IEEE APEC

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EE grad student Logan Horowitz and post-doc Nathan Miles Ellis, advised by Professor Robert Pilawa-Podgurski, have received awards for outstanding technical presentations at the IEEE Applied Power Electronics Conference (APEC)–the flagship conference in power electronics. 

Logan received a Best Presentation award for his work on a 14-level  Flying-Capacitor-Multilevel inverter for electric vehicles, and Nathan for his work on a 48V-to-1V point-of-load (PoL) converter for aerospace telecommunications and computing applications. Both works demonstrated performance greatly exceeding state-of-the-art capabilities in energy conversion.

The APEC Best Presentation Awards are scored using several criteria, including quality of slides, presentation, and how well the presenter responds to questions. The award is considered a significant professional achievement. APEC 2024 hit record attendance this year, which took place in Long Beach, CA.

Submitted by Gloria Tao on March 25, 2024
https://eecs.berkeley.edu/news/berkeley-eecs-wins-best-presentation-awards-at-ieee-apec/



Two graduate students receive technical awards at IEEE APEC

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Two Berkeley EECS graduate students, Haifah Sambo and Logan Horowitz, received separate Technical Session Best Presentation Awards at the 2023 IEEE Applied Power Electronics Conference (APEC), after a rigorous review process that highlights the conference’s most innovative technical solutions. Sambo received a Technical Lecture Award, for her oral presentation of her paper, “Autotuning of Resonant Switched-Capacitor Converters for Zero Current Switching and Terminal Capacitance Reduction,” while Horowitz received a Technical Dialogue Award, for his poster presentation paper of his paper “Decoupling Device for Small Commutation Loop and Improved Switching Performance with Large Power Transistors.” APEC focuses on the practical and applied aspects of the power electronics business and is the premier conference in the field. The technical program includes peer-reviewed papers that cover all areas of technical interest for practicing power electronics professionals. Both Sambo and Horowitz are advised by Professor Robert Pilawa-Podgurski. 

Submitted by Bennett Agnew on June 12, 2023 – 3:33pm
Two graduate students receive technical awards at IEEE APEC | EECS at UC Berkeley