NORD Drivesystems is performing tests and numerical analyses for drive components
and systems manufactured in-house to meet the requirements of the EN 50598-2
standard.
In the most recent Ecodesign standard EN 50598-2, the European Union is
establishing system efficiency requirements for drive electronics as well as
complete drive systems. Ahead of any regulations becoming effective, NORD Drivesystems
is ensuring their drive components meet the requirements of the specified
standard. NORD can, therefore, quickly provide detailed information to resolve
any customer queries concerning the EN 50598-2 standard.
The EN 50598-2 standard defines efficiency classes for frequency
inverters and motor starters as IE0 (high losses), IE1 (reference values), and
IE2 (losses significantly below reference). Following the same pattern, system efficiency
is rated IES0, IES1, and IES2.
System efficiency according to EN 50598-2 is not only rated at full
power but at eight designated load points with different torques and speeds. Instead
of energy efficiency percentiles, the standard considers incremental power loss
in watts. With the new approach, system performance in drive scenarios with the
motor at standstill and under load (e.g. elevator stop) can now be compared.
Current tests with NORD inverters have shown power losses significantly
below the reference values in the EN 50598-2 standard both for the inverters
and the power drive systems (PDS) combining inverters and energy-efficient
motors. NORD is able to achieve an IES2 system efficiency rating.
A 50-year-old company, NORD has gathered extensive application knowhow and
detailed understanding of the interaction of all drive components.
NORD’s comprehensive approach considers the entire drive train, with all
components, gearboxes, motors, power electronics, and functional intelligence being
developed in-house and manufactured in NORD factories, making the company a
single-source provider of complete drive solutions for over 100 industries.
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