IEEE Power Electronics Magazine - March 2020 - 73

the events leading to his WBG power
electronics proposal during the 1980s,
when he worked at the General Electric
Research Center in Schenectady, New
York. He elaborated on the history,
evolution, and impending challenges
in this critical field of technology. Prof.
Shenai attributed WBG power tech-
nologies' slow progress and market
penetration to fragmentation in the
power electronics supply chain and
fundamental problems associated with
the crystal-growth process that lead
to a high number of defects and an in-
creased manufacturing cost.
Throughout the lecture, Prof. She-
nai emphasized the reliability of pow-
er systems components and remarked
that future electric-utility, transporta-
tion, and cyber infrastructures will
demand power systems with 1 million
hours of mean time between failures
(MTBFs). He substantiated that claim
by describing extensive investiga-
tions during the 1990s that delivered

FIG 1 Approximately 100 engineers, faculty, and students from the Milwaukee area
attend Prof. Shenai's IEEE Distinguished Lecture on WBG electronics delivered at Milwaukee Tools on 6 November 2019.

the high-end computer-server power
supplies with 1 million hours of MT-
BFs that are the backbones of today's
Internet infrastructure. He also il-
lustrated an innovative methodology
for the design of compact and robust
power systems using WBG power
devices and the need to develop a
radically new crystal-growth process,
which is the subject of an article in the

March 2020

December 2019 issue of Proceedings of
the IEEE.
The lecture concluded with lively
discussions and exchanges of ideas.
The proceeding was well received and
turned out to be the largest event of
the year for the IEEE Milwaukee Sec-
tion, since it drew participants from
out of state, including Region 4 Indus-
trial Engagement Chair Jim Riess.

z	IEEE POWER ELECTRONICS MAGAZINE

73



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IEEE Power Electronics Magazine - March 2020

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