i3 - September/October 2017 - 15

EV/HEV Circuit-Blocks Promising For SiC Devices
AUXILIARY
UNITS

AC SUPPLY

AC/DC OBC

AC/DC STATION

Tech

BUCK DC/DC

HV BATTERY

BUCK DC/DC

BUCK & BOOST
DC/DC

BOOST
DC/DC

AIR CONDITIONER
INVERTER

BOOST
+ INVERTER

FUEL CELLS

COMPRESSOR
MOTOR

AC OUTLET

DC converters and DC/AC inverters.
An onboard microcontroller rapidly
switches on and off power to MOSFETs
at high frequency. This signal then goes
through step-up transformers to generate
a higher voltage signal. Ultimately, the
electricity flows into and produces power
in an EV's electric traction motor.
For the upcoming 2017-2018 racing season, both the diodes and the MOSFETs in

HV
CAPACITOR

TRACTION
INVERTER

TRACTION MOTOR

the power inverter used by Venturi
Racing will be made from Silicon Carbide,
further trimming the size and weight
of the inverter. Indeed, the inverter will
become small enough to be placed
lower on the chassis; you want weighty,
sizeable elements as low as possible in
race cars to allow for improved aerodynamics. A low center of gravity also gives
you handling benefits.

Incorporating SiC high-speed device
construction into Schottky diodes
makes it possible to design parts that
can withstand higher voltages and
contributes to greater compactness
of other circuit components.

It turned out the DS Virgin Racing
driver Sam Bird won on both days.
Because of energy-storage and drivingrange limitations, Formula E drivers
change cars midrace. For the 2018-19
series a single car will be expected to
make it through an entire Formula E race.
Benefits in terms of range extension for
your typical Tesla should follow.
Apart from Audi, DS Virgin and
Venturi Racing, BMW, Panasonic Jaguar
and Renault are committed to Formula E.
Mercedes Benz will also field a team for
2019. The knowledge gained will be funneled into road-going EVs and hybridelectric vehicles going forward. You will
also see the latest tech displayed at CES
2018 in Las Vegas.

AARP IS PROUD TO ANNOUNCE OUR 2017
INNOVATION CHAMPION AWARD GRAND PRIZE WINNER

CONGRATULATIONS

Our future depends on innovation - and HomeEXCEPT's
in-home monitoring system is reinventing caregiving.
HomeEXCEPT's smart monitoring technology and design focuses
on this underserved market, offering their users, families and
caregivers peace of mind with complete privacy.
Learn more at www.homeexcept.com

LEARN MORE ABOUT THIS YEAR'S WINNERS : : : www.aarp.org/innovationaward



http://www.homeexcept.com http://www.aarp.org/innovationaward

i3 - September/October 2017

Table of Contents for the Digital Edition of i3 - September/October 2017

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i3 - September/October 2017 - Cover1
i3 - September/October 2017 - Cover2
i3 - September/October 2017 - Contents
i3 - September/October 2017 - 2
i3 - September/October 2017 - 3
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