Hyundai Rotem said on the 17th that it developed the intelligent energy-saving train automatic control system (IEOS) in partnership with Korea Railroad Corporation (KORAIL) and Korea National University of Transportation.
IEOS is a technology that sets the optimal speed for each section by reflecting rail track conditions and operating environments and cuts unnecessary acceleration and deceleration to save energy.
As an industry-academia project to improve rail operations efficiency and achieve carbon neutrality, Hyundai Rotem joined the joint research and development and created an algorithm that enables economical-speed operation while maintaining a stable ride.
Hyundai Rotem verified the energy-saving effect of IEOS through thousands of repeated running simulations and demonstration tests in a Digital Twin environment that identically reproduces the characteristics of rail vehicles in virtual space.
In a demonstration test conducted on the Gangneung Line last month by applying IEOS to the KTX-Eum train, energy savings of 12.2% on the Seowonju–Gangneung section and 10.9% on the Gangneung–Seowonju section were confirmed compared with the existing baseline.
In particular, IEOS was developed by reflecting the concept of a software-defined vehicle (SDV). It can be applied with software upgrades alone, without modifying or replacing train devices or components.
IEOS is also linked with signaling devices so that the train stops immediately when a problem occurs, securing safety. It can also help ease the operator's driving burden and improve the uniformity of rail vehicle operating quality.
A Hyundai Rotem official said, "We will continue to enhance our capabilities in various rail technologies, including energy-saving technology, through steady research and development, and work to contribute to achieving carbon neutrality."