Truck & Off-Highway Engineering - April 2024 - 13

TECHNICAL INNOVATIONS
sider these key elements when searching
for an integrated thermal-management
solution. There are integrated
converter designs available that account
for ambient temperatures, ensure
the best possible heat dissipation via
the base plate, and provide optimal
connection of the power components.
Tobias Wanzke is Head of Department at
Deutronic Electronic, a developer
and manufacturer of intelligent power
electronics and test systems.
Tobias Wanzke, Head of Department at
Deutronic Electronic, notes that not all DC-DC
contact cooling converters are equal.
also can be applied where a cooling
circuit already exists, although there are
some higher costs and design efforts
required with this solution.
A project Deutronic executed for an
industrial street sweeper manufacturer
required a relocation. The converters were
initially installed on the chassis between
the steering axle and first drive axle. Due
to the chassis heat capacity, contact cooling
was the choice as the converters were
mounted directly on the chassis.
Later, after the converters were installed,
the manufacturer decided to
use that space for other components.
The converters had to be moved and
installed in a more compact volume
between the cab and the body, therefore
preventing contact cooling. For this
reason, cooling via heatsinks was initially
considered in a " floating " manner.
However, since no fan could provide
the necessary air circulation in the installation
space, it was ultimately decided to
use a cold plate/water cooling solution.
With this setup, a " floating " or stacked
design could be realized. Since the vehicle
already had a cooling circuit installed, the
cold plates could be inserted into it.
The clear advantage with cold plates
is that environmental conditions related
to heat have minimal if any influence,
provided that the heat limits of the cold
plate are observed. The cold plate itself
allows for greater flexibility on the location
of the transducer if an active cooling
circuit is available.
Not all DC-DC contact cooling converters
are equal. It's important to conTRUCK
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April 2024 13
3/11/24 10:50 AM
DEUTRONIC
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Truck & Off-Highway Engineering - April 2024

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