Matt Woongkul Lee

Matt Woongkul Lee

Assistant Professor @ Purdue

Publications

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Publications are organized by research topic below. Use the filters to browse by topic or venue type.

Neutral-Point-Less Multilevel Inverter

  1. Journal M. Benson, K. Lee, A. Halawa, X. Dong, L. Yi, J. Moon and W. Lee, “High-order DC-link ripple characterization in single capacitor multilevel operation of neutral-point-less (NPL) inverters,” IEEE Trans. Ind. Electron., 2026.
  2. Journal M. Benson, K. Lee, X. Dong, L. Yi, J. Moon and W. Lee, "Robustness of load impedance-based multilevel voltage generation in neutral-point-less H-type (NPL.H) inverter topology with load imbalance," IEEE Trans. Power Electron., 2026.
  3. Journal A. Halawa, K. Lee, M. Benson, J. Moon and W. Lee, "Characterization of switch voltage unbalance issue in WBG-based diode clamped multilevel inverters," IEEE Trans. Power Electron., 2026.
  4. Journal K. Lee, M. Benson, X. Dong, L. Yi, J. Moon, and W. Lee, “Common-mode EMI analysis with active CMV cancellation in neutral-point-less H-type inverter,” IEEE Trans. Power Electron., vol. 40, no. 10, pp. 15003-15012, 2025.
  5. Conference I. Osman, W. Lee et al., "DC-link capacitor design for a neutral-point-less three-level dual-phase inverter for traction application," in Proc. IEEE Energy Convers. Cong. and Expo. (ECCE), 2025, pp. 1-5.
  6. Conference A. Halawa, J. Moon and W. Lee, "Hybrid Si/SiC NPL.H three-level inverter for cost effective electric propulsion system," in Proc. IEEE Transport. Electrific. Conf. and Expo. (ITEC), 2025, pp. 1-6.
  7. Conference A. Halawa, J. Moon, and W. Lee, "Layout optimization for parasitic inductance reduction of GaN-based NPL.X multilevel inverter," in Proc. IEEE Appl. Power Electron. Conf. (APEC), 2025. IEEE APEC Best Oral Presentation Award
  8. Conference M. Benson, Y. Li, K. Lee, J. Moon, and W. Lee, “DC-link capacitor board design for low parasitic inductance,” in Proc. IEEE Appl. Power Electron. Conf. (APEC), 2025.
  9. Journal X. Dong, M. Benson, K. Lee, L. Yi, W. Lee, and J. Moon, “NPL.H: Neutral-Point-Less H-type 3-Level inverter,” IEEE Trans. Power Electron., vol. 39, no. 2, pp. 2522-2536, 2024.
  10. Conference A. Halawa, B. Schuchardt, J. Moon, and W. Lee, "Influence of high -frequency power loop inductance on GaN-based neutral-point-less X-type (NPL.X) 3-level inverter" in Proc. IEEE Transport. Electrific. Conf. and Expo. (ITEC), 2024, pp. 1-6.
  11. Conference M. Benson, K. Lee, J. Moon, and W. Lee, “Active Common Mode Voltage Cancellation in SiC-based NPL.H Inverter with Imbalanced Load,” in Proc. IEEE WiPDA, 2024, pp. 1-6.
  12. Conference M. Benson, X. Dong, K. Lee, J. Moon, and W. Lee, “Neutral-point-less (NPL) multilevel inverter with discontinuous pulse width modulations: X-type inverter,” in Proc. IEEE Energy Convers. Cong. and Expo. (ECCE), 2023, pp. 1-6.
  13. Conference M. Benson, X. Dong, M. Guven, K. Lee, J. Moon, and W. Lee, “Efficiency and DC-link ripple analysis of neutral-point-less (NPL) multilevel inverter with discontinuous pulse width modulations,” in Proc. IEEE Energy Convers. Cong. and Expo. (ECCE), 2022, pp. 1-6.
  14. Conference M. Benson, X. Dong, M. Guven, K. Lee, J. Moon, and W. Lee, “Neutral-point-less (NPL) multilevel inverter topology with single dc-link capacitor: H-type inverter,” in Proc. IEEE Transport. Electrific. Conf. and Expo. (ITEC), 2022, pp. 1-6.

Optical Power Transfer

  1. Journal K. Lee, H. Kim, and W. Lee, “Brushless wound field synchronous generator design with an optical power transfer,” IEEE Trans. Magn., vol. 61, no. 9, pp. 1-5, 2025.
  2. Conference J. Kim, K. Reyes, K. Lee, and W. Lee, “Active gate drive with optical communication and integrated power and signal systems in series connected SiC MOSFETs,” in Proc. IEEE Appl. Power Electron. Conf. (APEC), 2026. IEEE APEC Best Poster Presentation Award
  3. Conference H. Kim, W. Lee and D.-K. Kim, "Analysis and design of brushless wound field synchronous generator with optical power transfer for high speed applications," in Proc. IEEE Energy Convers. Cong. and Expo. (ECCE), 2025, pp. 1-7.
  4. Conference J. Kim, T. Kim and W. Lee, "Self-powered gate drive for series connected SiC MOSFETs in MV applications," in Proc. IEEE Energy Convers. Cong. and Expo. (ECCE), 2025, pp. 1-6.
  5. Conference K. Lee, H. Kim, and W. Lee, "Brushless wound field synchronous generator design with an optical power transfer," in Proc. 2025 IEEE Conference on Magnetism and Magnetic Materials and Intermag (MMM-INTERMAG), New Orleans, LA, USA, 2025.

Current-Source Inverters & Integrated Motor Drives

  1. Journal R. Torres, S. Lee, H. Dai, W. Lee, T. Jahns, and B. Sarlioglu, “Analysis of Pulsating High-Frequency Injection Self-Sensing Control for CSI PM Motor Drives,” IEEE Trans. Power Electron., vol. x, no. x, pp. xx-xx, May. 2024.
  2. Journal H. Dai, R. A. Torres, J. Gossmann, W. Lee, T. M. Jahns, and B. Sarlioglu, “A seven-switch current-source inverter using wide bandgap dual-gate bidirectional switches,” IEEE Trans. Ind. Appl., vol. 58, no. 3, pp. 3721-3737, 2022.
  3. Journal R. A. Torres, H. Dai, W. Lee, T. M. Jahns, B. Sarlioglu, “Current-source inverter integrated motor drives using dual-gate four-quadrant wide-bandgap power switches,” IEEE Trans. Ind. Appl., vol. 57, no. 5, pp. 5183-5198, Jul. 2021.
  4. Journal W. Lee, S. Li, D. Han, T. Minav, M. Pietola, and B. Sarlioglu, “A review of integrated motor drive and wide bandgap power electronics for high performance electro-hydrostatic actuators,” IEEE Trans. Transport. Electrific., vol. 4, no. 3, pp. 684-693, Jul. 2018.

Rare-Earth-Free Electric Machine Design

  1. Conference M. Fereydoonian, K. Lee, C. Kiriella, J. Moon, and W. Lee, “Closing the loop on circular economy in transportation electrification: reuse, repurposing, and recycling of batteries, power electronics, and electric machines,” IEEE J. Sel. Topics Ind. Electron., vol. 6, no. 3, pp. 931-947, 2025.
  2. Conference M. Fereydoonian, D. Bobba, and W. Lee, “Magnetic flux path analysis of wound-field flux-switching machines with different field and armature winding configurations,” IEEE J. Sel. Topics Ind. Electron., vol. 6, no. 3, pp. 888-899, 2025.
  3. Journal K. Lee, H. Kim, and W. Lee, “Brushless wound field synchronous generator design with an optical power transfer,” IEEE Trans. Magn., vol. 61, no. 9, pp. 1-5, 2025.
  4. Conference M. Fereydoonian, H. Kim, and W. Lee, "High-power density wound-field flux-switching machine with modular ellipse shape rotor for electric propulsion systems," in Proc. 2025 IEEE Conference on Magnetism and Magnetic Materials and Intermag (MMM-INTERMAG), New Orleans, LA, USA, 2025.
  5. Conference H. Kim and W. Lee, "Torque harmonics mitigation in wound field synchronous generators with asymmetric rotors for more electric aircraft," in Proc. IEEE Transport. Electrific. Conf. and Expo. (ITEC), 2025, pp. 1-6.
  6. Conference M. Fereydoonian and W. Lee, "Sustainability-centric rare-earth-free electric machine design for traction applications," in Proc. IEEE Energy Convers. Cong. and Expo. (ECCE), 2024, pp. 1-6.
  7. Conference M. Fereydoonian and W. Lee, "High-power density wound-field flux-switching machine with modular rotor design for traction applications," in Proc. IEEE Energy Convers. Cong. and Expo. (ECCE), 2024, pp. 1-6.
  8. Journal W. Lee, “Rare-earth magnet-free electric machine design: unlocking sustainable electrification,” IEEE Electrification Magazine, vol. 11, no. 4, pp. 88-89, 2023 (Invited).

Partial Discharge & Electromagnetic Interference

  1. Journal K. Lee, H. Kim, J. Im, S. A. Sufi, C. Park and W. Lee, "A review of partial discharge in high-frequency and high-speed WBG-based electric drives," IEEE Open Journal of Industry Applications, vol. 7, pp. 79-89, 2026.
  2. Conference S. A. Sufi, W. Lee, K. Lee, and C. Park, “Mitigating PWM-induced partial discharge through optimized skin effect control,” in Proc. IEEE Transport. Electrific. Conf. and Expo. (ITEC), 2025.
  3. Conference S. A. Sufi, K. Lee, W. Lee, and C. Park, “Analyzing the influence of skin effects on PWM-induced partial discharge at elevated temperatures and reduced pressures,” IEEE Electrical Insulation Conference (EIC), 2025.
  4. Journal K. Lee, M. Benson, M. Nia, and W. Lee, “CM EMI and partial discharge signature analysis of WBG-based AC machine drives with voltage-based measurement method,” IEEE Trans. Ind. Appl., vol. 60, no. 4, pp. 6232-6241, 2024. IEEE IAS Industrial Drives Committee First Paper Award
  5. Journal S. Lee, W. Lee, M. Liu, and B. Sarlioglu, “High-frequency motor impedance analysis and CM current estimation of electric motors with concentrated and toroidal winding,” IEEE Trans. Transport. Electrific., vol. 11, no. 1, pp. 880-890, 2025.
  6. Conference K. Lee, M. Benson, X. Dong, J. Moon, and W. Lee, “A comparative common-mode EMI noise analysis of neutral-point-less (NPL) multilevel X-type inverter with active common-mode voltage cancellation,” in Proc. IEEE Appl. Power Electron. Conf. (APEC), 2024.
  7. Conference K. Lee, M. Fereydoonian, M. Benson, and W. Lee, “Partial discharge and electromagnetic interference under repetitive voltage pulses with high slew rate in AC machine drives,” in Proc. IEEE Transport. Electrific. Conf. and Expo. (ITEC), 2022, pp. 1-6.
  8. Conference S. A. Sufi, K. Lee, W. Lee, and C. Park, Identifying the influence of skin effects on PWM-induced partial discharges," in Proc. IEEE Transport. Electrific. Conf. and Expo. (ITEC), 2024, pp. 1-6.

Single-Stage DC Fast Charger

  1. Journal A. Dornala and W. Lee, “Enhancing reactive power compensation capability for a single-stage indirect matrix converter in V2G applications,” IEEE Trans. Ind. Electron., 2026.
  2. Journal A. Dornala, M. Benson, and W. Lee, “A translation-based modulation for single-stage three-phase rectifier indirect matrix converter,” IEEE Trans. Power Electron., 2026.
  3. Conference A. Dornala and W. Lee, “Optimal modulation methodology for efficient operation of single-stage indirect matrix converter,” in Proc. IEEE Transport. Electrific. Conf. and Expo. (ITEC), 2025.
  4. Conference A. Dornala, and W. Lee, "Bidirectional over-voltage protection circuit for three-phase single-stage indirect matrix converter,” in Proc. IEEE Transport. Electrific. Conf. and Expo. (ITEC), 2024, pp. 1-6.
  5. Conference M. Benson, A. Dornala, M. Andleeb, and W. Lee, “Simple and robust carrier-based PWM technique for single-stage three-phase rectifier indirect matrix converter,” in Proc. IEEE Appl. Power Electron. Conf. (APEC), 2024.

Shunt-Connected Solar Microinverter

  1. Journal R. Varadharajan, W. Lee, and Y. Dong, “Cost-effective voltage and current sensing technique for smart agriculture systems,” Comput. and Electron. Agric., vol. 293, 2025.
  2. Journal K. Lee, M. Fereydoonian, M. Benson, A. Dornala, M. Guven, and W. Lee, “Grid-connected PV inverter for driving induction machines with synchronous scalar control,” IEEE Access, vol. 12, pp. 5177-5187, 2024.
  3. Conference R. Varadharajan, A. Dornala, K. Lee, and W. Lee, “Novel three-phase PLL with per phase grid angle tracking capability for shunt-connected solar microinverter,” in Proc. IEEE Energy Convers. Cong. and Expo. (ECCE), 2024, pp. 1-6.