Select Publications

Conference Proceedings

Data Center Power Delivery

  • Y. Zhu, J. Zou, and R. C. N. Pilawa-Podgurski, ‘‘A 1500-A/48-V-to-1-V Switching Bus Converter for Next-Generation Ultra-High-Power Microprocessors,’’ in Proc. IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, Feb. 2024, to be published.

  • Y. Zhu, N. M. Ellis, and R. C. N. Pilawa-Podgurski, ‘‘Comparative Performance Analysis of Regulated Hybrid Switched-Capacitor Topologies for Direct 48 V to Point-of-Load Conversion,’’ in Proc. IEEE Energy Conversion Congress and Exposition (ECCE), Nashville, TN, USA, Oct. 2023, pp. 3313-3320.  |  Link 

  • Y. Zhu, T. Ge, N. M. Ellis, J. Zou, and R. C. N. Pilawa-Podgurski, ‘‘A 48-V-to-1-V Switching Bus Converter for Ultra-High-Current Applications,’’ in Proc. IEEE Workshop on Control and Modeling for Power Electronics (COMPEL), Ann Arbor, MI, USA, June 2023, pp. 1-8.  |  Link   [ COMPEL Best Paper Award]

  • Y. Zhu, T. Ge, N. M. Ellis, L. Horowitz, and R. C. N. Pilawa-Podgurski, ‘‘A 500-A48-to-1-V Switching Bus Converter: A Hybrid Switched-Capacitor Voltage Regulator with 94.7% Peak Efficiency and 464-Win\(^3\) Power Density,’’ in Proc. IEEE Applied Power Electronics Conference and Exposition (APEC), Orlando, FL, USA, Mar. 2023, pp. 1989-1996.  |  Link 

  • T. Ge, Y. Zhu, and R. C. N. Pilawa-Podgurski, ‘‘A Regulated Cascaded Hybrid Switched-Capacitor Converter with Soft-Charging and Zero Voltage Switching for 48-to-12-V Applications,’’ in Proc. IEEE Applied Power Electronics Conference and Exposition (APEC), Orlando, FL, USA, Mar. 2023, pp. 1982-1988.  |  Link 

  • Y. Zhu, T. Ge, Z. Ye, and R. C. N. Pilawa-Podgurski, ‘‘A Dickson-Squared Hybrid Switched-Capacitor Converter for Direct 48 V to Point-of-Load Conversion,’’ in Proc. IEEE Applied Power Electronics Conference and Exposition (APEC), Houston, TX, USA, Mar. 2022, pp. 1272-1278.  |  Link   [ APEC Student Travel Award]

  • Y. Zhu, Z. Ye, T. Ge, R. Abramson, and R. C. N. Pilawa-Podgurski, ‘‘A Multi-Phase Cascaded Series-Parallel (CaSP) Hybrid Converter for Direct 48 V to Point-of-Load Applications,’’ in Proc. IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, Oct. 2021, pp. 1973-1980  |  Link 

Modeling and Control of Pure and Resonant Switched-Capacitor Converters

  • H. B. Sambo, Y. Zhu, and R. C. N. Pilawa-Podgurski, ‘‘Autotuning of Resonant Switched-Capacitor Converters for Zero Voltage Switching,’’ in Proc. IEEE Workshop on Control and Modeling for Power Electronics (COMPEL), Ann Arbor, MI, USA, June 2023, pp. 1-8.  |  Link 

  • N. Biesterfeld, Y. Zhu, R. K. Iyer, N. M. Ellis, and R. C. N. Pilawa-Podgurski, ‘‘Steady-State Analysis of Series-Capacitor Buck Converters in Discontinuous Capacitor Voltage Mode,’’ in Proc. IEEE Workshop on Control and Modeling for Power Electronics (COMPEL), Ann Arbor, MI, USA, June 2023, pp. 1-6.  |  Link 

  • H. B. Sambo, Y. Zhu, T. Ge, N. M. Ellis, and R. C. N. Pilawa-Podgurski, ‘‘Autotuning of Resonant Switched-Capacitor Converters for Zero Current Switching and Terminal Capacitance Reduction,’’ in Proc. IEEE Applied Power Electronics Conference and Exposition (APEC), Orlando, FL, USA, Mar. 2023, pp. 1217-1224.  |  Link 

  • Y. Zhu, Z. Ye, T. Ge, and R. C. N. Pilawa-Podgurski, ‘‘Multi-Resonant Compensation Control for Terminal Capacitance Reduction in Resonant Switched-Capacitor Converters,“ in Proc. IEEE Workshop on Control and Modeling for Power Electronics (COMPEL), Cartagena, Columbia, Nov. 2021, pp. 1-6.  |  Link 

  • Y. Zhu, Z. Ye, and R. C. N. Pilawa-Podgurski, ‘‘Modeling and Analysis of Resonant Switched-Capacitor Converters with Finite Terminal Capacitances,“ in Proc. IEEE Workshop on Control and Modeling for Power Electronics (COMPEL), Cartagena, Columbia, Nov. 2021, pp. 1-6.  |  Link 

  • Y. Zhu, Z. Ye, and R. C. N. Pilawa-Podgurski, ‘‘Modeling and Analysis of Switched-Capacitor Converters with Finite Terminal Capacitances,’’ in Proc. IEEE Applied Power Electronics Conference and Exposition (APEC), Phoenix, AZ, USA, June 2021, pp. 178-185.  |  Link 

Discrete State Event-Driven (DSED) Simulation of Power Electronics Systems

  • Y. Zhu, Z. Zhao, B. Shi, J. Ju, Z. Yu, L. Yuan, and K. Chen, ‘‘Discrete State Event-Driven Framework for Simulation of Switching Transients in Power Electronic Systems,’’ in Proc. IEEE Energy Conversion Congress and Exposition (ECCE), Baltimore, MD, USA, Oct. 2019, pp. 895-900.  |  Link 

  • B. Shi, Z. Zhao, Y. Zhu, Z. Yu, J. Ju, L. Yuan, and K. Chen, ‘‘Discrete State Event-Driven Approach for High-Power Converter Simulations,’’ in Proc. IEEE Energy Conversion Congress and Exposition (ECCE), Baltimore, MD, USA, Oct. 2019, pp. 4627-4631.  |  Link 

Modeling and Control of Power Semiconductor Devices

  • Y. Ling, Z. Zhao, and Y. Zhu, ‘‘A Novel Digital Active Gate Driver for High-Power IGBT to Reduce Switching Losses and Stresses,’’ in Proc. IEEE Energy Conversion Congress and Exposition (ECCE), Baltimore, MD, USA, Oct. 2019, pp. 4189-4194.  |  Link 

  • X. Wang, Z. Zhao, Y. Zhu, K. Chen, and L. Yuan, ‘‘A Comprehensive Study on the Gate-Loop Stability of the SiC MOSFET,’’ in Proc. IEEE Energy Conversion Congress and Exposition (ECCE), Cincinnati, OH, USA, Oct. 2017, pp. 3012-3018.  |  Link 

Journal Articles

Data Center Power Delivery

  • Y. Zhu, T. Ge, N. M. Ellis, L. Horowitz, and R. C. N. Pilawa-Podgurski, ‘‘The Switching Bus Converter: A High-Performance 48-V-to-1-V Architecture with Increased Switched-Capacitor Conversion Ratio,’’ in IEEE Transactions on Power Electronics, accepted.

Modeling and Control of Pure and Resonant Switched-Capacitor Converters

  • Y. Zhu, Z. Ye, and R. C. N. Pilawa-Podgurski, ‘‘Modeling and Analysis of Switched-Capacitor Converters with Finite Terminal Capacitances,’’ in IEEE Transactions on Power Electronics, in press.  |  Link 

Discrete State Event-Driven (DSED) Simulation of Power Electronics Systems

  • Y. Zhu, Z. Zhao, B. Shi, and Z. Yu, ‘‘Discrete State Event-Driven Framework with a Flexible Adaptive Algorithm for Simulation of Power Electronics Systems,’’ in IEEE Transactions on Power Electronics, vol. 34, no. 12, pp. 11692-11705, Dec. 2019.  |  Link 

  • B. Shi, Z. Zhao, J. Ju, Z. Yu, and Y. Zhu, ‘‘Switching Transient Simulation and System Efficiency Evaluation of Megawatt Power Electronics Converter With Discrete State Event-Driven Approach,’’ in IEEE Transactions on Industrial Electronics, vol. 69, no. 3, pp. 2180-2190, March 2022.  |  Link 

  • B. Shi, Z. Zhao, Y. Zhu, Z. Yu, and J. Ju, ‘‘Discrete State Event-Driven Simulation Approach With a State-Variable-Interfaced Decoupling Strategy for Large-Scale Power Electronics Systems,’’ in IEEE Transactions on Industrial Electronics, vol. 68, no. 12, pp. 11673-11683, Dec. 2021.  |  Link 

  • Z. Yu, Z. Zhao, B. Shi, Y. Zhu, and J. Ju, ‘‘An Automated Semi-Symbolic State Equation Generation Method for Simulation of Power Electronic Systems,’’ in IEEE Transactions on Power Electronics, vol. 36, no. 4, pp. 3946-3956, April 2021.  |  Link 

  • Z. Zhao, D. Tan, B. Shi, Y. Zhu, and H. Jin, ‘‘A Breakthrough in Design Verification of Megawatt Power Electronic Systems,’’ in IEEE Power Electronics Magazine, vol. 7, no. 3, pp. 36-43, Sept. 2020.  |  Link 

Modeling and Control of Power Semiconductor Devices

  • B. Shi, Z. Zhao, D. Tan, and Y. Zhu, ‘‘Integral Control of Megawatt Power Electronic Systems as Generalized Hybrid Systems,’’ to appear in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 10, no. 4, pp. 4254-4274, Aug. 2022.  |  Link 

  • B. Shi, Z. Zhao, Y. Zhu, and X. Wang, ‘‘Time-Domain and Frequency-Domain Analysis of SiC MOSFET Switching Transients Considering Transmission of Control, Drive, and Power Pulses,’’ in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 9, no. 5, pp. 6441-6452, Oct. 2021.  |  Link 

  • Y. Ling, Z. Zhao, and Y. Zhu, ‘‘A Self-Regulating Gate Driver for High-Power IGBTs,’’ in IEEE Transactions on Power Electronics, vol. 36, no. 3, pp. 3450-3461, Mar. 2021.  |  Link 

  • B. Shi, Z. Zhao, and Y. Zhu, ‘‘Piecewise Analytical Transient Model for Power Switching Device Commutation Unit,’’ in IEEE Transactions on Power Electronics, vol. 34, no. 6, pp. 5720-5736, June 2019.  |  Link 

  • X. Wang, Z. Zhao, K. Li, Y. Zhu, and K. Chen, ‘‘Analytical Methodology for Loss Calculation of SiC MOSFETs,’’ in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 7, no. 1, pp. 71-83, Mar. 2019.  |  Link 

Issued Patent

  • Y. Zhu, Z. Zhao, B. Shi and Z. Yu, ‘‘Discrete State Event-Driven Simulation Method for Simulation of Power electronics system,’’ US Patent No. 10,970,432, issued Apr. 6, 2021.  |  Link