Experience

GridBlock

• United States
• Renewables & Environment
• 1 - 100 Employee

• Director Of Engineering

  • Dec 2020 - Present

  GridBlock is building the world's first zero carbon EV charging platform to support widespread commercial fleet electrification. Sustainable microgrids at GridBlock Charging Hubs integrate solar and battery storage with patented Energy Router technology — the first future-proof charging infrastructure that can grow and adapt as industry standards and customer demands change. This gigawatt-scale DC fast charging platform dramatically reduces the total cost of operating EV fleets and accelerates their climate benefits. Show less



Endeavour. Inspired Infrastructure.

• United States
• Renewable Energy Semiconductor Manufacturing
• 1 - 100 Employee

• Director of Engineering at GridBlock - an ENDEAVOUR company

  • Dec 2020 - Present

  ENDEAVOUR is on a journey to make clean water and renewable energy affordable and accessible to all. We are self-sustaining through reinvestment of profits from the clean-tech companies that we launch, allowing us to build an environment that fosters endless innovation. Our crew of creative self-starters, in collaboration with impactful partners, are making breakthrough discoveries in the realms of biofuel, nanotechnology, and hydrodynamics to create infrastructure that helps solve some of the world’s greatest challenges. Endeavour. Inspired Infrastructure. Show less



Georgia Institute of Technology

• United States
• Higher Education
• 700 & Above Employee

• Graduate Research Assistant

  • Aug 2016 - Dec 2020

  Next Generation Soft-Switching Solid-State Transformer Development of a universal bidirectional SiC-enabled Soft-Switching Solid-State transformer with high-frequency isolation for medium power industrial applications (motor drive, EV fast charging…). Work supported by $2M+ of industry and government funding. - Identified a 25 kVA, 480 Vac / 750 Vdc universal module as common building block across all applications to increase standardization - Performed a multi-objective design optimization of the module to minimize cost, losses, volume, and component stress - Designed, placed, and routed the power stage PCBs in Cadence Allegro - Developed a low-cost gate driver with embedded protection of the power semiconductors - Designed the complete converter control strategy implemented in a cost-effective, custom-designed DSP-FPGA digital controller - Tested prototype modules and demonstrated soft-switching operation across the entire load range with an efficiency > 97% - Interleaved multiple modules to reach 100 kVA Hybrid Transformers Initiative Development of grid-connected power electronics to bring dynamic, cost-effective and scalable P/Q/V/I/Z control to the power infrastructure. Work supported by $2.5M+ of funding from DOE. - Designed a 1 MVA, 13 kV hybrid transformer prototype unit including: - Development of a 50 kVA back-to-back four-legged 3-level NPC converter with fail-normal protection - Filter and busbar design and thermal analysis in MATLAB/Simulink and PLECS - Design of a custom-made DSP-FPGA controller board for digital control of the unit - Established a cascaded control strategy in dq0 space for proper operation of the unit including under unbalanced line conditions - Built and demonstrated the prototype unit with +/1 MVA of decoupled P and Q control achieved at 13 kV - Design of an upgraded 5 MVA, 24 kV Unit is underway Show less



Thales

• France
• IT Services and IT Consulting
• 700 & Above Employee

• Design and implementation of a high-efficiency and low THD 500 W PFC converter for avionics systems

  • May 2015 - Dec 2015

  Master’s degree internship under the supervision of F. Plagnol and C. Taurand. Design and implementation of a high-efficiency and low THD 500 W PFC converter for avionics wide frequency networks (400 Hz - 800 Hz) with DO-160, ABD100 and 787B compliance. - Analyzed the possible PFC topologies and selected the optimal design for the application - Designed the power stage, including custom-designed magnetics, to achieve high-efficiency operation - Designed the input filter to meet EMI avionics specifications and operate on avionics wide-frequency networks (400 – 800 Hz) - Designed and implemented an analog control scheme to achieve low THD and ensure compliance with avionics safety standards - Placed and routed the power stage PCB and tested and validated the prototype - Achieved a current THD < 3 % and an efficiency > 94 % on the entire PFC working area (150 – 500 W and 400 – 800 Hz) Show less



CERN

• Switzerland
• Research Services
• 700 & Above Employee

• Complete electrical and thermal analysis of a 12 MVA multilevel back-to-back NPC VSC for particle ac

  • Jun 2014 - Aug 2014

  Internship in TE/EPC High Power Converters group under the supervision of F. Boattini - Derived the thermal stress of the power semiconductors linked to the demanding power cycling operation of the unit using PSIM - Implemented a complete MATLAB-PSIM co-simulation of the converter to verify the design Internship in TE/EPC High Power Converters group under the supervision of F. Boattini - Derived the thermal stress of the power semiconductors linked to the demanding power cycling operation of the unit using PSIM - Implemented a complete MATLAB-PSIM co-simulation of the converter to verify the design



Laboratoire plasma et conversion d'énergie (Laplace )

• France
• Research Services
• 1 - 100 Employee

• Characterization of switching and conduction losses in power semiconductors (Si, SiC, GaN)

  • Jul 2013 - Aug 2013

  Internship under the supervision of T. Meynard, Ph.D. -Determined conduction and switching losses in power FETs (Si, SiC, GaN) using a novel Opposition Method -Adapted the control system, designed the inductive load, and performed the characterization of several power devices -Validated the experimental results through MATLAB and PSIM simulations Internship under the supervision of T. Meynard, Ph.D. -Determined conduction and switching losses in power FETs (Si, SiC, GaN) using a novel Opposition Method -Adapted the control system, designed the inductive load, and performed the characterization of several power devices -Validated the experimental results through MATLAB and PSIM simulations