Magnetics Business & Technology - May/June 2019 - 10

FEATURE ARTICLE

Innovative Winding Technology Leads to New Generation of Inductive Products
from BLOCK

BLOCK, one of the world's leading manufacturers of transformers, power supplies, reactors and EMC filters, has developed a
new platform called Future Winding technology designed to take
performance optimization of inductive winding products into a
new dimension.
"The extraordinary variability in the design
of the winding structure comes with a
number of benefits for winding products"
according to Wolfgang Niedrist, general
manager of BLOCK USA Group. "Optimal
cooling by maximizing the heat-emitting
conductor surface while also creating
cooling ducts via the winding structure
and minimal proximity losses with rising
switching frequencies are just some of the
strengths of this state-of-the-art technology."

Long life is enhanced, also. "Thanks to the new Future Winding
technology high inductivity can be realized with a single-layer
winding structure," explains Niedrist. "The benefit is that additional layer insulation and, possibly, even basic insulation to the
core is not needed. Aging effects in the insulation materials - as
are typical with the conventional structure of inductive winding
products - no longer occur which maximizes service life."

Wolfgang Niedrist,
general manager of
BLOCK USA Group

The combination of increased conductor
surface, spread of the winding, and cooling ducts created via the
winding structure enables optimal cooling of the entire product.
The new technology shows off its strengths with forced air cooling, particularly, taking the performance optimization of inductive
winding products into a new dimension, says the company.

An important result of the new technology is that varying the
conductor spacing in the winding structure effectively reduces
proximity losses in the conductor that are generated by ripple
currents from switching frequencies, particularly as frequency
increases. This effect is significant especially for future applications of SiC- and GaN-based semiconductor technologies. It
also represents a potentially cost-effective alternative to the use
of expensive high-frequency Litz wires in conventional winding
technologies.
BLOCK officials gave this overview of other key features and
advancements. Potential control is another area of improvement.
The specific winding structure results in more or fewer parasitic
capacitances and, therefore, in the case of transient over-voltages, differences in potential between the individual turns. This can
damage the conductor insulation, potentially leading to a winding
short. Future Winding variably controls such parasitic capacitance - and, thus, the potential across the winding - through the

10

Magnetics Business & Technology * May/June 2019

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Magnetics Business & Technology - May/June 2019

Table of Contents for the Digital Edition of Magnetics Business & Technology - May/June 2019

Magnetics Business & Technology - May/June 2019
Contents
Editor’s Choice/ Features
Hitachi Metals Equips Innovation Center for 3D Printing of Large Metal Parts
Tech Tips: Adhesive Fundamentals for Common Magnet Bonding Applications
Innovative Winding Technology Leads to New Generation of Inductive Products from BLOCK BLOCK,
Research & Development
NASA Spacecraft Discover New Magnetic Process in Turbulent Space
Product News
Industry News
Marketplace/ Advertising Index
Heat-Assisted Magnetic Recording Milestone Reached by Seagate Technology
Magnetics Business & Technology - May/June 2019 - Magnetics Business & Technology - May/June 2019
Magnetics Business & Technology - May/June 2019 - Cover2
Magnetics Business & Technology - May/June 2019 - Contents
Magnetics Business & Technology - May/June 2019 - Editor’s Choice/ Features
Magnetics Business & Technology - May/June 2019 - 5
Magnetics Business & Technology - May/June 2019 - Hitachi Metals Equips Innovation Center for 3D Printing of Large Metal Parts
Magnetics Business & Technology - May/June 2019 - 7
Magnetics Business & Technology - May/June 2019 - Tech Tips: Adhesive Fundamentals for Common Magnet Bonding Applications
Magnetics Business & Technology - May/June 2019 - 9
Magnetics Business & Technology - May/June 2019 - Innovative Winding Technology Leads to New Generation of Inductive Products from BLOCK BLOCK,
Magnetics Business & Technology - May/June 2019 - 11
Magnetics Business & Technology - May/June 2019 - 12
Magnetics Business & Technology - May/June 2019 - 13
Magnetics Business & Technology - May/June 2019 - Research & Development
Magnetics Business & Technology - May/June 2019 - 15
Magnetics Business & Technology - May/June 2019 - NASA Spacecraft Discover New Magnetic Process in Turbulent Space
Magnetics Business & Technology - May/June 2019 - 17
Magnetics Business & Technology - May/June 2019 - Product News
Magnetics Business & Technology - May/June 2019 - 19
Magnetics Business & Technology - May/June 2019 - 20
Magnetics Business & Technology - May/June 2019 - 21
Magnetics Business & Technology - May/June 2019 - 22
Magnetics Business & Technology - May/June 2019 - Industry News
Magnetics Business & Technology - May/June 2019 - 24
Magnetics Business & Technology - May/June 2019 - 25
Magnetics Business & Technology - May/June 2019 - 26
Magnetics Business & Technology - May/June 2019 - 27
Magnetics Business & Technology - May/June 2019 - Marketplace/ Advertising Index
Magnetics Business & Technology - May/June 2019 - 29
Magnetics Business & Technology - May/June 2019 - Heat-Assisted Magnetic Recording Milestone Reached by Seagate Technology
Magnetics Business & Technology - May/June 2019 - Cover3
Magnetics Business & Technology - May/June 2019 - Cover4
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