Expert Details
Power Electronics, Controls and System Design
ID: 719260
Wisconsin, USA
Expert has designed power conversion systems up to 200 KVA with expandability into the MVAs for a solar array, variable speed hydro, and battery energy storage used by a utility for load leveling.
Expert is presently designing power converters using resonant mode switching of IGBTs. The highlight of this approach involves zero voltage switching of IGBTs with discrete pulse modulation techniques.
Through his experience as a designer of power conversion equipment, Expert has specified and applied a variety of power electronic devices and control circuits. He is knowledgeable of power electronic circuits involving significant analog signal processing and digital switching circuits. Expert has developed digital circuits and software to replace what was typically done with analog circuits.
Expert can design unique driver and protection circuits for power electronic devices as well as design custom power supplies or converters to meet unique applications. He also designs the unique control circuits and algorithms needed to command the power electronics for the required applications.
Expert has a Masters Degree in Electrical Engineering and a second Masters in Controls. He has experience in circuit design and analysis as well as practical work in manufacturing design, diagnostics and testing. He has been responsible for project planning, selection of vendors, and new product development.
Expert writes software models of power electronic circuits that include switching devices and passive elements. The models are used for either predicting system behavior or for determining stresses on components in a product design.
Expert has designed motor drives through 300 HP using bipolar transistors, IGBTs, microprocessors, analog and digital control circuitry. He has started-up these units at customers facilities and designed the production processes.
Understanding how switching power supplies generate significant electrical interference, Expert has designed circuits in power converter products and systems that have the required noise immunity.
Education
| Year | Degree | Subject | Institution |
|---|---|---|---|
| Year: 2007 | Degree: MSME | Subject: Controls | Institution: University of Wisconsin - Madison |
| Year: 1986 | Degree: MSEE | Subject: Electrical Engineering - Power Electronics | Institution: University of Wisconsin - Madison |
| Year: 1982 | Degree: BS | Subject: Physics and Math | Institution: University of Wisconsin - Eau Claire |
Work History
| Years | Employer | Title | Department |
|---|---|---|---|
| Years: 2006 to 2012 | Employer: Power Electronics | Title: Lead Engineer - Power Electronics | Department: Rockwell Automation |
Responsibilities:Team lead and principle design engineer on voltage regulation products and systems up to 2 MW |
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| Years | Employer | Title | Department |
| Years: 2005 to 2006 | Employer: Power Electronics | Title: Lead Engineer - Power Electronics | Department: Resonant Magnetic Imaging |
Responsibilities:Team lead/designer on high voltage DC power supply for MRI scanner products |
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| Years | Employer | Title | Department |
| Years: 1996 to 2005 | Employer: SoftSwitching Technologies | Title: Senior Design Engineer | Department: |
Responsibilities:Team lead and principle design engineer on voltage regulation products and systems up to 2 MW |
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| Years | Employer | Title | Department |
| Years: 1994 to 1996 | Employer: Omnion Power Engineering | Title: Senior Development Engineer | Department: |
Responsibilities:Team lead and principle design engineer on power conversions systems for renewable energy applications up to 200kW. |
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| Years | Employer | Title | Department |
| Years: 1992 to 1994 | Employer: Omnion Power Engineering | Title: Principal | Department: |
Responsibilities:Power electronics expert consultant. |
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| Years | Employer | Title | Department |
| Years: 1990 to 1992 | Employer: Unico, Inc. | Title: Senior Project Engineer | Department: |
Responsibilities:Team lead and principle design engineer on power conversions systems for renewable energy applications up to 200kW. |
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| Years | Employer | Title | Department |
| Years: 1986 to 1990 | Employer: Unico, Inc. | Title: Senior Development Engineer | Department: |
Responsibilities:Lead designer of PWM motor drives for high power servo systems up to 300HP |
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| Years | Employer | Title | Department |
| Years: 2012 to 2015 | Employer: (Undisclosed) | Title: Lead Engineer Power Electronics | Department: |
Responsibilities:Team lead and principle design engineer on voltage regulation products and systems up to 2 MW |
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| Years | Employer | Title | Department |
| Years: 2015 to Present | Employer: Undisclosed | Title: Chief Engineer | Department: |
Responsibilities:Team lead and principle design engineer on voltage regulation and uninterruptible power supply (UPS) products. |
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Career Accomplishments
| Associations / Societies |
|---|
| IEEE - Institute of Electrical and Electronic Engineers |
| Licenses / Certifications |
|---|
| PE - Professional Engineer, State of Wisconsin |
| Publications and Patents Summary |
|---|
| Expert has 8 patents (first named on 3): Auxiliary Commutated Silicon-controlled Rectifier Circuit Methods and Systems Auxiliary Commutated Silicon-controlled Rectifier Circuit Methods and Systems Power Converter for AC Mains Multibridge Power Converter for AC Mains Dynamic Voltage Sag Correction Power Conversion and Sag Correction with Regenerative Loads Dual-Feed Power Supply Systems with Enhanced Power Quality Distributed Floating Series Active Impedances for Power Transmission Systems Dynamic Voltage Sag Correction Single Phase to Three Phase Power Converter |
Fields of Expertise
alternating-current to alternating-current conversion, direct-current to alternating-current conversion, electric power, electric-power conversion, electric-power converter, motor drive, power electronics, digital circuit, power-supply circuit, control system, electronics engineering, electric power quality, power converting circuit control, power converting circuit modeling, analog circuit design, analog design application, insulated-gate bipolar transistor, motor drive design, power transistor, electronic noise, harmonic filter, electrical current regulator, dc link converter, alternative energy, digital switching, load-leveling battery, utility load leveling, load leveling, resonant transition power converter, circuit analysis, analog device design, power metal-oxide semiconductor field effect transistor, digital circuit simulation, electrical safety standard, power semiconductor device, vendor selection, digital signal, logic circuit, power generation system, direct-current to alternating-current converter, electric power distribution, electric circuit design, energy conversion, analog-signal processing, alternating-current transformer, alternating-current to direct-current conversion, alternating-current frequency divider, digital-to-analog conversion, electrical grounding, digital circuit design, circuit design, wave-shaping circuit, wave-generating circuit, high-voltage transformer, analog multiplier, silicon-controlled rectifier, field coil, digitizing system, analog signal, insulated field-effect transistor, electronic device, logic system, overload protection, surge arrester, voltage regulator, voltage regulator diode, transistor, thyristor, switching circuit, signal processing, semiconductor diode, power inductor, overvoltage protection, electronic logic circuit, junction field-effect transistor, field-effect transistor, electronic switching, digital signal processing, digital integrated circuit, digital control electronics science, capacitor, bipolar transistor, battery storage, analog circuit