Magnetics Business & Technology - May/June 2022 - 23

RESEARCH & DEVELOPMENT
effort addresses a major roadblock in operating electric motors at
high speed, namely overcoming large back electromotive forces
(BEMF). Their solution hopes to maximize the capabilities of the
SiC technology and associated digital control platform, thereby
bringing the overall drive system performance parameters to levels
unachievable by current Si-based power conversion systems.
If successful, the project team will demonstrate a motor drive
capable of handling large BEMF and increase motor system efficiency
over a broad range of operating speeds, a useful combination
for high-speed applications in the oil and gas industry, highspeed/high-power
compressors, grid-connected energy storage
and renewable energy generation. Shown above is the company's
IM-1500 high-speed, high-power electric drive.
Advanced Electric Propulsion System by Honeywell Aerospace
& University of Maryland.
Honeywell Aerospace and the University of Maryland are working
on a novel high-voltage 500 kW advanced electric propulsion
system (AEPS) with a high efficiency and a high-power density.
Among the innovations are use of high-performance windings to
increase the copper fill factor for increased machine efficiency as
well as thermal and electric conductivity, seeking to enable overall
machine weight reduction without compromising efficiency. The
system will provide direct drive to the propulsive device without
using a torque amplifier for low weight, cost, and volume,
and high reliability. The major components, the electric rotating
machine (motor) and the motor drive (power and control electronics),
will be heavily integrated for better performance, sharing a
common chassis and cooling system.
The Wisconsin High-field Axisymmetric Mirror (WHAM) project
at the University of Wisconsin-Madison is leveraging advances
in the stability and confinement of the mirror fusion concept, innovative
plasma heating, and high-field superconducting magnets
to demonstrate a potentially transformative development path
toward a low-cost linear fusion device. Two mirror coils will be
constructed using high temperature superconducting material.
The plan is to demonstrate electron temperatures exceeding 1
keV and an advanced fusion triple product in the end cell.
Continued on page 24...
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May/June 2022 * Magnetics Business & Technology 23
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Magnetics Business & Technology - May/June 2022

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