January 31 in Blacksburg
Power Conversion Systems
photo: VT College of Engineering website
(Jason) Lai, Ph.D.
James. S. Tucker Professor
Electrical and Computer Engineering Department
Director, Future Energy Electronics Center
Virginia Polytechnic Institute and State University
106 Plantation Road (0356)
Blacksburg, VA 24061
here for a PDF copy of the presentation
Solar photovoltaic (PV) delivers low-voltage varying dc that
requires power electronics circuits to make it into a useful
format. Efficiency is a complicated issue in the entire PV
power conversion system that starts from PV panel to the end
customer power output or energy production. For the case with
utility grid connection, the output of power electronics needs
to be high-voltage sinusoidal ac, and the power conversion
technique needs to take into account cost, efficiency, and
other performances while complying with regulatory standards.
production of a solar photovoltaic system with different power
electronics technologies varies. The Virginia Tech Future
Energy Electronics Center set up a demonstration system for
a year-long study to compare energy production with different
commercially available power electronics architectures and
technologies. The study results will be used for the discussion
of how to produce solar energy with more cost effective power
The trend of latest power electronics technologies that deal
with high efficiency PV power conversion and compliance to
grid connection codes will be introduced. The overall presentation
will be divided in five sections: (1) PV Market Outlook and
Cost Targets, (2) PV Cell Characteristics and Maximum Power
Point Tracking, (3) Energy Production Comparison for Different
PV System Architectures, (4) Example PV Power Conversion Circuits
and Efficiency Profiles, and (5) Future Trends.
(Jason) Lai received M.S. and Ph.D. degrees in electrical
engineering from the University of Tennessee, Knoxville. In
1989, he joined the Electric Power Research Institute (EPRI)
Power Electronics Applications Center (PEAC), where he managed
EPRI-sponsored power electronics research projects. From 1993,
he worked with the Oak Ridge National Laboratory as the Power
Electronics Lead Scientist.
In 1996, he became a part of Virginia Tech. Currently he is
James S. Tucker Professor of Electrical and Computer Engineering
Department and Director of Future Energy Electronics Center
(FEEC). He has published more than 280 refereed technical
papers and 2 books. He has received 22 U.S. patents in the
area of high power electronics and their applications.
His has work brought him several distinctive awards including
a Technical Achievement Award in Lockheed Martin Award Night,
and seven International conference paper awards. Dr. Lai is
an IEEE Fellow. He was the Founding Chair of the 2001 IEEE
Future Energy Challenge, General Chair of 2005 IEEE Applied
Power Electronics Conference, and General Chair of NSF Workshop
on Advanced Power Conditioning for Alternate Energy Systems.
Thursday, January 17, 2013 in Blacksburg
Social: 6:30 PM
Dinner: 7:00 PM
Talk: 8:00 PM
Cost: Members & Guests $20.00, Students $10.00
Please let us know if you have any dietary restrictions (vegetarian,
dairy or gluten allergy, etc).
Holiday Inn Blacksburg
Prices Fork Rd.
to Holiday Inn Blacksburg:
I-81, take exit 118 onto US-460 West
on US-460 West until passing the main campus entrance (Southgate
Drive), then take the next exit: Downtown exit (first Prices
Fork Rd. exit).
Holiday Inn is at the intersection of Prices Fork Rd. and
University City Boulevard.
RSVP by 5 PM, Monday, Jan 14, 2013. Please specify the number
of attendees and any dietary needs/restrictions.
Joe Hartwell, firstname.lastname@example.org
John Dilley, John.Dilley@cobham.com
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