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 Expert  723333

Expert in Power Electronics, Motor Drives, Renewable Energy, Etc.

Available for your Consulting and Expert Witness Needs

Tennessee (TN)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise: Listed with other top experts in: 
AC frequency converters are frequently used for AC motor drives. He has written 7 books and many publications covering this area.

A CCV is a frequency changer which can be direct or through a dc link. He worked as CCV expert in a litigation case in Australia and also wrote technical papers on the subject.

In this converter, AC is first converted to DC, filtered and then converted to fixed or variable frequency AC. The former is for UPS system and the latter is for AC motor drive.

DC-DC converter is usually for regulated power supply to electronic apparatus. It can also be transportation in a DC motor drive.

This is usually for AC motor drive or UPS system.

He has written 4 books on electric motor control. Motors can be DC or AC.

A power converter using power semiconductor devices is usually defined as power conditioner.

A power converter that generates DC from AC.

A thyristor that can be turned on and off by gate pulse.

Electric power conservation is very effective using power electronics.

Control of converters are possible by ASICs and DSPs.

Power conversion and control by power sem. devices.

Power supply can be DC or AC and this uses power electronics heavily.

PWM controls voltage of inverter with minimal harmonics.

Wind, PV or fuel cells are possible renewable energy systems which are very important energy sources in recent years.

UPS system gives reliable DC or AC supply when the utility power fails.


alternating-current frequency converter


cyclo converter


dc link converter


DC to DC conversion


DC-to-DC converter


direct-current to alternating-current conversion


direct-current to alternating-current converter


electric motor control


electric power conditioner


electric-power conversion


electric-power converter


full-wave rectifier


gate turn-off thyristor


power conservation


power converting circuit control


power electronics


power-supply circuit


pulse-width modulation


renewable energy system


uninterruptible power system

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Knoxville, Tennessee;  Chattanooga, Tennessee;  Johnson City, Tennessee;  and Asheville, North Carolina.

Often requested
with this expert:

Power Electronics and Renewable Energy Systems
Power Electronics, Controls and System Design
Power Electronics, Power Supplies
AC Motor Drives, Electric Machinery, Power Electronics for...

Year   Degree   Subject   Institution   Honors
1966   Ph.D.   Electrical Engineering   Univ. of Calcutta, India  
1960   M.S.   Elec. Engg.   Univ. of Wisconsin, Madison  
1956   B.E.   Elec. Engg.   Univ. of Calcutta   First Class

Work History:
Years   Employer   Department   Title   Responsibilities

1987 to 2002


University of Tennessee (Now Emeritus Professor)


Electrical Engg. & Computer Science


Condra Chair of Excellence in Power Electronics (Emeritus Chaired Professor)


Teaching and research in power electronics and motor drives

1976 to 1987


General Electric R & D Center


Power Electronics Laboratory


Electrical Engineer


R & D in power electronics and motor drives

1971 to 1976


Rensselaer Polytechnic Institute


Elec. Engg.


Associate Professor


Teaching and reasearch in power electronics and drives

1960 to 1971


Bengal Engg. College


Elec. Engg.


Associate and Assistant Prof. in EE


Teaching and research in Elec. Engg.

1982 to


(Undisclosed Consulting Company)




Part time consulting, research, technical writing, IEEE Professional work, book writing, etc.

Career Accomplishments:

Life Fellow, IEEE



Professional Appointments

Chairman, IEEE Power Electronics Council Member, Proc. IEEE Editorial Board Associate Editor, IEEE IE Trans Power Electronics Chair, IEEE IECON + many others


IEEE Lamme Medal (1996) IEEE IAS Outstanding Ach. Award (1993) IEEE Mittelmann Award (1994) IEEE Newell Award (2005) IEEE Meritorius Achievement Award (1997) + Others

Publications and Patents Summary

7 technical books in power electronics and drives 250technical papers 21 U.S. Patents + several book chapters

Selected Publications and Publishers  
 - Elsevier  
 - Prentice Hall  
 - Institute of Electrical and Electronics Engineers (IEEE)  

Government Experience:
Years   Agency   Role   Description
1993 to 1997   U.S. Navy   Sponsored research   Novel motor drive with soft-switched high frequency link converters
1993 to 1995   U.S. EPA   Sponsored research   Research in wind generation system
1996 to 1997   NASA   Sponsored research   EV/HV drive development
1999 to 2000   U.S. Navy   Sponsored researech   Ship propulsion drive

Consulting Services:
Selected Consulting Examples:
  • GE - High frequency link power conversion project
  • General Dynamics Land Systems - DC-DC power converter development for Electric Vehicle
  • Delco Remy - Fuzzy Logic based EV control
  • Kolmorgen Corp. - Advanced technology in motor drives
  • Bendix Corporation - Power electronic ignition system for car
Recent Client Requests:
  • Power conversion expert for consulting on DC power generation to power a hydraulic pump system on a trailer.
  • Expert in Power Electronics.
  • High powered DC drive expert for consulting on high powered DC drive.
  • Expert in contract designers for power electronics applications for consulting on Induction Heating Inverters for Billet Heating or Hardening.
  • Expert in AC motor failure forensics to write report with conculsions on why motor failed.
  • Custom control engineering for H Bridge expert for consulting on H-Bridge Circuit Troubleshooting.
  • DC circuit engineering expert for consulting on a DC to DC converter design prototype.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Expert Witness Experience Summary:
Mullins Handcock Law Firm, Australia; Fish & Richardson, USA and several others
Recent Litigation Client Requests:
  • Motors and drives expert for consulting on Department of Defense bid protest.
  • Wind turbine expert for consulting on wind turbine patents, legal documents, and expert reports.
  • Electrical engineering and wind turbine expert for consulting on wind turbine crash case.
  • Motor-generator expert for consulting on synchronous AC motor-generator sets.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

International Experience:
Years   Country / Region   Summary
2004 to 2006   Perth, Australia   Mullins Handcock- Technical Expert witness in mining drive

Language Skills:
Foreign Language  

Additional Skills and Services:

The expert has extensive teaching and research experience in power electronics and motor drives that includes power converters, PWM techniques, microcomputer/DSP control, electric/hybrid vehicle drives, renewable energy systems, and artificial intelligence (expert system, fuzzy logic and neural network) applications in power electronics and motor drives.

Supplier and Vendor Location and Selection

The expert has many experiences providing vendor selection in various industries.

Other Skills and Services

He has been a power electronics consultant in a large number of industries.


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