Jonathan Kunkle Email & Phone Number

Irwin, Pa, Us

North Huntingdon, Pa, Us

Design and development of Industrial Active Harmonic Filters and Induction Heating Power supplies

Hanover, Pennsylvania, Us

-Power electronics development-Testing procedures and test fixture design-Product, Test, & Component Specifications-Quotation Support-MathCAD/Matlab/Simulink Simulation and Analysis-Troubleshooting and repair support-Thyristor and IGBT Gate Drive DesignProjects:-LCRL Switching Filter designs for an IGBT based Active Front End elevator motor drive product line -Power Converter IGBT based H- Bridge STATCOM Design-Troubleshooting for a liquid cooled IGBT based AC to DC power converter and associated circuitry and control/gate drive boards-Consulting and research for integrated pumps, motors, and electric drives-Design and development of a retrofit IGBT based liquid cooled 833ADC 525VDC 437.3KW AC to DC power converter system for dual plasma torch application including packaging, printed circuit board, and cooling design-Harmonic Load Tester Development (480V, 1200Arms with harmonic currents) for performing factory heat runs and audible noise tests on custom inductors using in-circuit harmonic currents without over burdening their power source. -Transformer design strategies for low capacitive coupling-Closed loop liquid cooling system design for a 1.25MW energy storage power converter applicationPCBA design and development:-Fuse Monitor Card Assembly + Wire harness-Variable Voltage Command Circuit-Control Board Clone (including obsolete component/circuit redesigns)-IGBT Tester Control Board (Double Pulse)Quote Support: -15kADC 40V 600kW SCR-based Power Supply-1.5kADC 450V 450kW IGBT-based Power Supply-Bus to Cubicle Fault Detector Assembly (PCBA+bracket+harness)-Fuse Monitor Power Supply Assembly (PCBA+bracket+harness+other components)Phone consultations: -Semiconductor Industry Pricing Opportunities-Validation of Industrial Machinery Using Hardware-in-the-Loop (HIL) Technologies

Nuremberg, Bavaria, De

Complex Power Electronics System Prototype DevelopmentTest Engineering and Test Fixture DesignPrinted Circuit Board Design-LabVIEW based test fixture development for automated testing of products-Smart Excel form development to support selection of standard engineering testing-Excel-VBA-based curve trace development -Adapter Board PCBA development to support high volume production testing of stacks-IGBT-based 470kW 340Arms 572V 850Hz DC-AC Bidirectional Conversion System for unmanned naval generator/propulsion system-220kW/375kW 380ADC/690ADC off-highway mining dump truck auxiliary rectifier stack assembly-IGBT Pulse Test Stand Development (1500VDC 10kA peak, w/ LabVIEW based controller)-Interface board (NI-GPIC Controller to QTY 6 SKYPER Prime O Fiber Optic Gate Drivers) PCBA development-IGBT-based 250kW 250ADC 1100VDC to 480V 3-phase 300Arms air-cooled bidirectional converter system with 5-10kHz switching frequency, including LCL-RC damped AC filter-Interface board (NI-GPIC Controller to QTY 9 SKYPER12 IGBT Gate Drivers) PCBA development-Concept development for a IGBT-based AC to isolated DC on-board lithium ion battery charging system product line (24V 8kW, 36V 21kW, 48V 21kW, and 80V 21kW) for the material handling industry-Test Engineer for an IGBT-based 1.25MW 1660ADC 1200VDC to 480V 3-phase bidirectional energy storage converter system

Cork, Ireland, Ie

Development Engineering Lead for global YZ Python Variable Speed Drives PlatformReporting to the director of Power Electronics, Advanced Development and Technology

Cork, Ireland, Ie

Technical Leader- Act as technical expert for multiple global VSD development efforts- Perform peer design reviews, review/approve designs- Drive commonality and quality of design across multiple products- Represent department with outside departments and global locations- Product on-site commissioning support- On-site global factory assembly and testing supportDevelopment and testing of IGBT-based Liquid Cooled Compressor Motor Variable Speed Drive Systems:- 1290HP, 380V/460V 117Hz 1620A Induction Motor VSD with Integral Active Harmonic Filter (Largest JCI VSD to date) [York YZ Centrifugal Chiller VSD]- 1170HP, 460V, 1280A 117Hz Induction Motor VSD with Integral Active Harmonic Filter [York YZ Centrifugal Chiller VSD]- 790HP, 460V, 880A 60Hz Induction Motor VSD with Integral Active Harmonic Filter [York YK Centrifugal Chiller VSD]PCBA design and development (circuit design, simulation, schematic capture, parts models, layout and gerbers, bill of material, assembly and test, documentation, and fixture design):-Digital Panel Meter Interface-Double Pulse Tester assembly and test, and documentation) and fixture design-4-channel amplifier board design Sustaining Engineering (circuit redesign due to component obsolescence)Hardware In Loop (HIL) system hardware design/layout and MATLAB/SIMULINK modeling for a compressor motor drive system using Opal RTMathcad, Excel, and Excel VBA based engineering design tool development

Youngwood, Pa, Us

• Integrated Power Products Developmento IGBT-based 25kW, 480V, 30A Grid Connected Wind Turbine Converter Systemo IGBT-based Permanent Magnet Motor Drive Hardware Platform for HVAC Compressors 138HP, 460V, 193A, 0-670Hz / 164HP, 460V, 220A, 0-483Hz / 185HP, 460V, 250A, 0-950Hzo IGBT-based Regenerative Permanent Magnet Motor Drive Product Line for Elevator Systems9 frames, 4-70HP nominal, 208-480V, 9-80A nominal, 18-160A overload, 0-125HzSCR-based Phase Angle Controlled AC soft-starter/solid-state switchPassive LCR Switching Filter• Testing Supporto IGBT bridge control verification, gate drive and interface board testing, and tester developmento IGBT stack testingo Direction to technicians, test specification generation, data collection and analysiso Modifications and repair of printed circuit boards• Field Service Supporto Customer site commissioning, testing, troubleshooting, and repairo Customer phone support• Project Supporto Hardware requirements for systems and components document generation for power converterso On and off site customer meetings to discuss project requirements, status, and design reviews

Davidson, North Carolina, Us

• Rolling Stock Power Electronics Development260kW, 906V, 302A, 0-75Hz 6-phase 3-Level IGBT NPC Linear Induction Motor Drive 40kW, 480V, 50A, 60Hz 3-phase 3-Level IGBT NPC Auxiliary Inverter•Lead Development Engineer for Custom Permanent Magnet Motor Drives 40kW, 460V, 50A, 0-3000Hz IGBT-based PWM sinusoidal inverter4.75kW, 460V, 6A, 0-3000Hz IGBT-based PWM inverter•Subsystems:Auxiliary Power Circuits (Power Line Filtering, Disconnect Switch Assemblies)Isolated DC-DC Converters (Flyback, half bridge, full bridge)AC-DC Power SuppliesSensor interfaces and analog/digital signal conditioning circuit designCustom magnetic specifications and testingIGBT and SCR gate drive designElectrical panels, wire harnesses•Power Electronic System quoting, studies, and consulting:10MVA 4160V 1390A ETO based wind farm STATCOM600HP 4160VAC 78A battery-sourced bus fleet compressor PWM drive50kW 216V 230A Army electric vehicle multipurpose converter12.5kVA 120V 104A IGBT inverter Army tactical generator62HP 260V 240A DC Brushless Navy propulsion drive80kW 30V 2667ADC graphite heater isolated full bridge converter1MW 850V 1176ADC Ship Service rectifier bridge assembly20/135HP 460V 200Hz centrifugal pump induction motor drive system 1.5MW, 480V, 2000A IGBT-based PWM bidirectional converter/inverter system250kW 345VDC 725A 775Hz Synchronous generator rectifier/field supply/controller for a Directed Energy Weapon

Munich, De

• Lead design engineer for a 300 - 1100HP 4160V VFD product line in US and Germany• Lead design engineer for a 1250-2250HP 4160V VFD product line• Development of a 2500-6000HP 4160 VFD concept design• Development of Power Electronic Converters for Customer Specific Projects:240kW 950V 250A IGBT-based buck converter system for Ion NitridingThyristor rectifier analog to digital control system upgrade for a Zinc Smelter209MW 950V 220kADC Thyristor-based rectifier system for Magnesium Smelting23.8MW 850V 28kADC IGBT-based buck converter system for Zinc Smelting1.33MW 400V 4.2kADC IGBT-based buck converter system for Plasma Torching17.4MW 435V 40kADC Thyristor-based rectifier system for Chlor-Alkali Application450kW 320V 3kADC 1kHz IGBT-based inverter for Glass Melting650kW 260V 2500ADC Thyristor-based rectifier system for Plasma Torching3500ADC RF DC Plasma Torch Power Supply Starter500kW Thyristor-based AC Glass Melt Power Supply150kW Glass Coating Thyristor-based Arc Diverter600kW IGBT-based Buck Converter for Plasma Torching1MW 1000V 1000A IGBT-based Dual Buck Converter• Developed and commissioned customer specific power and control upgrades and retrofits for legacy products• Commissioning of engineered power supplies and controls (US, Germany, Canada, Australia)• Developed engineering and marketing software tools and simulation models

Master’S Degree, Electrical And Computer Engineering (Power Electronics)

Bachelor’S Degree, Electrical Engineering

Diploma, College Preparatory