Thompson Consulting, Inc.

Multi-disciplinary engineering research and development

Custom prototype design and assembly (through-hole and surface mount)

- Advanced analog design

- Power electronics

- Specialty power supply design

- Quick turn-around prototypes

 

 

·         Magnetic design

- Magnetic suspensions and Maglev

- Magnetic braking

- Motors

- Actuators

- Finite element analysis

- Custom magnetics

·         Design seminars

·         Analog and power electronics

·         Failure investigations

 

 

Company Overview

In business since 1995 in the metro Boston/Worcester area, we provide multidisciplinary engineering research and development in a variety of electrical and mechanical areas, including advanced analog, power electronics, electromechanical, thermal and magnetic design and failure investigations.  We also provide custom R/D and prototype assembly (through-hole and surface mount).  We have successful new product experience in instrumentation, sensing, magnetic design and power electronics for large companies and startups.   An overview of the company is here (in PDF format).

 

Background of Principal 

Dr. Marc Thompson is President of Thompson Consulting, Inc. and Teaching Professor of Electrical Engineering at Worcester Polytechnic Institute.  Dr. Thompson holds 8 patents and has numerous publications based on his consulting and research work.  Dr. Thompson has the B.S., M.S., E.E. and Ph.D. degrees in Electrical Engineering and Computer Science, all from the Massachusetts Institute of Technology (M.I.T.)

·         For his curriculum vitae, follow this link.  (For an up-to-date CV please contact us directly).

·         For thumbnail sketches of some of his past engineering consulting projects, go here.

 

Engineering Consulting and R/D

·         Electromechanical actuators

·         High efficiency magnetic design

·         Eddy current braking

·         High speed, precision and low-noise analog design

·         Power electronics and power converter design

·         High frequency DC/DC converter design

·         Advanced magnetic design

·         Motors

·         System modeling and simulation

·         Finite-element analysis (magnetic/electric/thermal)

·         PSPICE and PSIM analysis for electronic, power and thermal circuit design

 

·         Failure investigations

·         Maglev and magnetic suspensions  

·         Control system design  

·         Semiconductor laser diode drivers 

·         Optoelectronics  

·         Design seminars and design reviews 

·         Technical report preparation  

·         Induction heating  

·         MATLAB, Mathematica, Ansoft 3D, FEMM and FastHenry analysis and simulation tools 

·         Video circuits and systems

Courses at W.P.I. and other Design Seminars

At Worcester Polytechnic Institute, Dr. Thompson teaches several different graduate design courses. The first, "Analog Circuits and Intuition" develops intuitive and "back of the envelope" methods for analog circuit, power electronics, magnetic, thermal and system analysis. Dr. Thompson also teaches Power Electronics, focusing on intuitive methods for designing power electronics systems.  He also teaches analog, power quality, power electronics, electromechanics and electric motor and power distribution design seminars for high-tech companies.

            Samples of course slides from Analog Circuits are here and here

Samples of slides from Power Electronics

 

Textbook ... "Intuitive Analog Circuit Design" now available in revised 2nd Edition

The text includes a CD-ROM with Powerpoint lecture slides and MATLAB design exercises, as well as LTSPICE circuit simulations throughout the text.

 

1st edition table of contents and preface are here, in PDF format.

2nd edition, Amazon.com link

2nd edition, Barnes & Noble link

2nd Edition Book link from Elsevier

For book errata, email the author directly.

Textbook ... "Power Quality in Electrical Systems"

Textbook on power quality standards, design issues and mitigating strategies, available in 2007 from McGraw Hill, jointly authored with Dr. Alexander Kusko.  An outline of the book is found here.  A link to the book front and back cover is shown here.

 

Amazon.com link to the book is here

 

Textbook ... "Analog Circuits (World Class Designs)"

Contributor of 3 chapters to "Analog Circuits (World Class Designs)," edited by Bob Pease, available from Elsevier, fall 2007.

Amazon link to the book



Textbook ... "Portable Electronics (World Class Designs)"

Contributor of 1 chapter to "Portable Electronics (World Class Designs)," edited by John Donovan, available from Elsevier, 2009.

Amazon link to the book

Education and Maglev Research at M.I.T.

Dr. Thompson received the Ph.D., E.E., M.S., and B.S. degrees in Electrical Engineering at the Massachusetts Institute of Technology. His doctoral thesis at MIT "High Temperature Superconducting Magnetic Suspension for Maglev" concerned the design and test of high-temperature superconducting suspensions for Maglev and the implementation of magnetically-based ride quality control. Dr. Thompson has authored a number of papers concerning superconducting magnetic suspension design, scaling laws, and actuation.  Other areas of research and consulting interest include: planar magnetics, power electronics, induction heating, IC packaging for improved thermal and electrical performance, use of scaling laws for electrical and magnetic design, acoustic and optical ranging systems, electrochemistry of the water/electrode interface, piezoelectric transformers for consumer electronics, and high speed laser diode modulation techniques. 

·         Some results of his Ph.D. thesis work and pictures of the 1/5 scale-model magnetic Maglev suspension are here.

·         More details of the construction and modeling of the magnetic suspension are given in the paper here.

·         A full listing of his Maglev-related publications is given here

·         His Ph.D. Thesis is available here via MIT Open Courseware.

 

Recent Additions to Website:

Lab demonstration video --- Illustration of Faraday’s Law Using a Magnetic Sniffer Coil

Dr. Thompson interviewed about “Hyperloop”

FTA Urban Maglev “Lessons Learned” --- Federal Transit Authority Report No. 0026

Photo of “Floater Rider” magnetic levitation demo at the 2012 Worcester Polytechnic Institute Spark Party

Dr. Thompson’s Ph.D. thesis on Maglev, available here from MIT Open Courseware

Dr. Thompson’s Master’s thesis on high speed laser diode drivers available here from MIT

IEEE podcast dissussing Shanghai Maglev:  http://spectrum.ieee.org/podcast/green-tech/mass-transit/transrapid-internationals-maglev

Video of “Floater Rider” magnetic levitation and guidance in our lab

Video of levitating aluminum coil in our lab

List of patents (downloadable in PDF format)

Magnemotion M3 Maglev system description

Description of the General Atomics Urban Maglev System

Company overview  is here (in PDF format)

A bibliography of references related to inductance calculation methods

Analog Circuits and Intuition, syllabus

Samples of slides from Analog Circuits are here and here

Power Electronics, syllabus

A sample of slides from Power Electronics

Electromechanics, syllabus

Notes from a 3-day seminar on electromechanics and machines:  Day 1:  Basics  Day 2:  Magnetics  Day 3:  Machines

 

Notes from a short course on Power Quality:   Power Quality Outline  Notes on EMI  Day 1 Notes 1  Day 1 Notes 2  Day 2 Notes 1  Day 2 Notes 2  Day 3 Notes 1  Day 3 Notes 2

Power Distribution, syllabus

Link to Dr. Thompson’s patents at the USPTO

Dr. Thompson's PhD Thesis is available using this link from the MIT library 

 

Papers:

            “Practical Issues in the use of NdFeB Permanent Magnets in Maglev, Motors, Bearings and Eddy Current Brakes,"  Proceedings of the IEEE, Nov. 2009

            R. Thornton, M. Thompson, B. Perreault and J. Fang, “Linear Motor Powered Transportation,  Proceedings of the IEEE, Nov. 2009

N. Medora, A. Kusko and M. Thompson, “Impact of Line Voltage Sag on Switch Mode Power Supply Operation,” 2008 3rd IEEE Conference on Industrial Electronics and Applications, June 3-5, 2008, Singapore

            “Designing Video Circuits” --- Part 1 --- Part 2 --- Part 3

            “Design Linear Circuits using OCTC Calculations”

            “SCTC Analysis Estimates Low Frequency –3dB Point”

“Network Tricks Aid in OCTC Circuit Analysis”

“Tips for Designing High-Gain Amplifiers”

M. T. Thompson and M. F. Schlecht, "High Power Laser Diode Driver Based on Power Converter Technology," IEEE Transactions on Power Electronics, vol. 12, no. 1, Jan. 1997, pp. 46-52

"Simple Models and Measurements of Magnetically-Induced Heating Effects in Ferromagnetic Fluids," IEEE Transactions on Magnetics, vol. 34, no. 5, September 1998, pp. 3755-3764

M. T. Thompson, R. D. Thornton and A. Kondoleon, "Scale Model Flux-Canceling EDS Maglev Suspension --- Part I: Design and Modeling," IEEE Transactions on Magnetics, vol. 35, no. 3, May 1999, pp. 1956-1963

M. T. Thompson and R. D. Thornton, "Scale Model Flux-Canceling EDS Maglev Suspension --- Part II: Test Results and Scaling Laws," IEEE Transactions on Magnetics, vol. 35, no. 3, May 1999, pp. 1964-1975

"Inductance Calculation Techniques --- Part I: Classical Methods," Power Control and Intelligent Motion, vol. 25, no. 12, December 1999, pp. 40-45

"Inductance Calculation Techniques --- Part II: Approximations and Handbook Methods," Power Control and Intelligent Motion, website http://www.pcim.com

"Eddy Current Magnetic Levitation--- Models and Experiments," IEEE Potentials, vol. 19, no. 1, Feb./March 2000, pp. 40-44

"Electrodynamic Magnetic Suspension --- Models, Scaling Laws and Experimental Results," IEEE Transactions on Education, vol. 43, no. 3, August 2000, pp. 336-342

Online Symposium for Electrical Engineers, “Permanent Magnet Electrodynamic Brakes…”

Online Symposium for Electrical Engineers, “Inductance Calculation Techniques…”

"Estimating Inductance of Wire Loops," in Newsletter of the IEEE Power Electronics Society, Volume 10, No. 2, April 1999, pp. 3

 

 

Contact info:

 

Address:

Thompson Consulting, Inc.

9 Jacob Gates Road
Harvard, Massachusetts 01451

Email: 

info@thompsonrd.com

Phone:

(978) 456-7722

Fax: 

Upon request

Website: 

http://www.thompsonrd.com

 

Links:

Curriculum Vitae of Marc Thompson, Ph.D 

Thompson Consulting Inc. consulting projects

Maglev (PhD) and other (MSEE) research at Massachusetts Institute of Technology

Teaching at Worcester Polytechnic Institute and other design seminars

Links to manufacturers' websites, applications notes, etc.

 


Do you see any errors or omissions?  Please contact webmaster@thompsonrd.com

 

Thompson Consulting, Inc. ("TCI") intends for the information contained in this web site to be accurate; however, errors sometimes occur. Therefore, TCI in no event shall be liable for any direct or indirect damages arising out of the use of material on this website.  © 1998-2014, Thompson Consulting, Inc., all rights reserved.

 

Updated 4/20/14