Publications

A complete, up-to-date list is also available on Google Scholar.

2026

• Single-Stage Single-Phase AC–DC MMC with AC-Port-Following Submodule Capacitor Voltages
  PA Gray, K Huynh, FA Ramos
  2026 IEEE Applied Power Electronics Conference and Exposition (APEC), 89-94
• Single-Stage Isolated Bidirectional Current-Fed Modular Multilevel DC-AC Converter for High Step Ratio Applications
  FA Ramos, PA Gray, K Huynh
  2026 IEEE Applied Power Electronics Conference and Exposition (APEC), 630-637

2025

• Single-Stage MMC for Single-Phase AC–DC Applications Using Anti-Series Half-Bridge Submodules with Ultra-Low Capacitance
  PA Gray, K Huynh, FA Ramos, M Nabizadeh
  2025 IEEE 26th Workshop on Control and Modeling for Power Electronics

2024

• A bidirectional current-fed isolated mmc with partial soft-switching for high step ratio dc–dc applications
  PA Gray, NJB Hosein, X Lan, PW Lehn
  IEEE Transactions on Power Electronics 39 (7), 8281-8292
• Integrated three-phase AC charger for vehicle applications with dual-inverter drive
  P Lehn, G Philippe
  US Patent 11,951,855
• Modulation-Enabled Single-Stage Current-Fed Dual Active Bridge AC-AC Converter with ZCS Turn-Off of Primary-Side Switches
  PA Gray, KW Kwan
  IECON 2024-50th Annual Conference of the IEEE Industrial Electronics Society
• Switch Current-Based Closed-Loop Control for ZCS Bidirectional Current-Fed DC-DC Converters
  JT Luterbach, D Bowman, G Kish, P Gray
  IECON 2024-50th Annual Conference of the IEEE Industrial Electronics Society
• Modular multi-level DC/DC converter with current-shaping
  G Philippe, PW Lehn
  US Patent 11,962,235

2023

• Integrated three-phase AC charger for vehicle applications with dual-inverter drive
  P Lehn, G Philippe
  US Patent 11,607,965
• A bidirectional current-fed isolated MMC with zero-current switching for high step ratio DC-DC applications
  PA Gray, NJB Hosein, X Lan, PW Lehn
  2023 11th International Conference on Power Electronics and ECCE Asia (ICPE
• On-board bidirectional AC fast charger for electric vehicles
  P Lehn, T Soong, S SEMSAR
  US Patent 11,799,292

2021

• A modular multilevel DC–DC converter with flying capacitor converter like properties
  PA Gray, PW Lehn, N Yakop
  IEEE Transactions on Industrial Electronics 69 (7), 6774-6783
• A high-frequency MMC for DC–DC applications using a three-winding transformer with DC flux cancellation
  PA Gray, ZC Ma, PW Lehn
  IEEE Journal of Emerging and Selected Topics in Industrial Electronics 3 (3

2020

• Discontinuous conduction mode operation of the current-shaping modular multilevel dc–dc converter
  PA Gray, PW Lehn
  IEEE Journal of Emerging and Selected Topics in Power Electronics 10 (2
• The current shaping modular multilevel DC–DC converter
  PA Gray, PW Lehn
  IEEE Transactions on Power Electronics 35 (10), 10050-10063
• Control of a universal input voltage modular multilevel dc-dc converter
  N Yakop, PA Gray, PW Lehn
  2020 IEEE 21st Workshop on Control and Modeling for Power Electronics

2019

• An approach for selecting compensation capacitances in resonance-based EV wireless power transfer systems with switched capacitors
  KA Cota, PA Gray, M Pathmanathan, PW Lehn
  IEEE Transactions on Transportation Electrification 5 (4), 1004-1014
• A Passive Cell Capacitor Voltage Control Method for the Current Shaping Modular Multilevel DC/DC Converter
  P Gray, L Peter
  2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL), 1-7
• The Current Shaping Modular Multilevel DC/DC Converter with Current Doubling
  PA Gray, PW Lehn
  2019 IEEE Energy Conversion Congress and Exposition (ECCE), 5928-5934

2018

• An integrated bidirectional three-phase AC charger for vehicle applications with buck-boost capability
  P Gray, P Lehn, S Wang
  2018 IEEE Energy Conversion Congress and Exposition (ECCE), 517-523

2016

• A new virtual harmonic impedance scheme for harmonic power sharing in an islanded microgrid
  V Khadkikar, Y Cui, J Shi, Z Wang, DF García, RD Villarroel, B García, ...
  IEEE Trans. Power Del. 31 (3), 936-945

2015

• New metric recommended for IEEE standard 1547 to limit harmonics injected into distorted grids
  X Zong, PA Gray, PW Lehn
  IEEE Transactions on Power Delivery 31 (3), 963-972

2014

• Application of Experimentally Measured Frequency Coupling matrices for Improved Harmonic Estimation
  F Yahyaie, P Gray, P Lehn
  CIGRE Canada 2014
• Identification of relative component participation in harmonic measurements
  F Yahyaie, PW Lehn, PA Gray
  2014 16th International Conference on Harmonics and Quality of Power (ICHQP
• Harmonic Analysis Software Tool for Steady-State Analysis of Distorted Grids with Multiple Distributed Generators
  P Gray, G Kish, P Lehn
  CIGRE Canada 2014

2013

• Harmonic models of common converter topologies for accurate harmonic analysis of distribution systems
  P Gray
  TSpace (University of Toronto)

2012

• Time-domain derived frequency-domain voltage source converter model for harmonic analysis
  PA Gray, PW Lehn
  2012 IEEE 15th International Conference on Harmonics and Quality of Power

This list updates automatically from OpenAlex. Last updated June 10, 2026.