Siemens to provide state-of-the-art IGBT Technology to Indian Railways

Siemens to design AC Traction Systems for Dual Cab High Horsepower Diesel Engine Locomotive

NEW DELHI: Indian Railways contributes to the enduring success of the nation’s growth story through its pivotal role in ensuring reliable, safe and secure transportation of people, goods and services. With a focus  on modernization, expansion of rail networks and energy efficiency, Siemens has been a trusted partner of the Indian Railways for the last six decades.

Automations solutions provider Siemens Limited today said it has bagged the contract to install state-of-the-art IGBT technology for Indian Railways. Siemens will be designing, supplying and installing Alternating Current (AC) Traction Systems for Dual Cab High Horsepower Diesel Engine Locomotive for Diesel Locomotive Works (DLW/Varanasi), the company said in a statement.

“The systems have been developed based on the state-of-the-art insulated Gate Bipolar Transistors (IGBT) technology. The AC traction systems will be produced at its factory at Nashik, Maharashtra,” the company said. The Insulated Gate Bipolar Transistors (IGBTs) are state-of-the-art power electronics for the traction system of electric and diesel-electric rail vehicles. The main benefit of IGBT is that it reduces the requirement for current, minimising heat and traction noise while also making the acceleration process efficient. IGBT is a three-terminal power semiconductor carrier device with high input impedance and large bipolar current-carrying capability. Many designers view IGBT as a device with MOS input characteristics and bipolar output characteristic that is a voltage-controlled bipolar device. IGBTs are today’s state-of-the-art power electronics for the traction system of electric (and diesel-electric) rail vehicles. They replace the previous inverter generation represented by GTO (gate turn-off thyristors).

“The advent of IGBTs has yielded strong efficiency gains in electric drive technology. The project showcases Siemens’ partnership with the Indian Railways as it combines innovation with the responsibility to bring together the combined expertise of its teams, that is committed to delivering reliable, safe and efficient technologies,” its Executive Vice-President and Head, Mobility Tilak Raj Seth said.

In the Metro Rail segment, last week, ICF flagged off its new train-set for Kolkata Metro which was propelled by 3-phase insulated-gate bipolar transistor (IGBT) based electric propulsion system, which was indigenously manufactured. However neither the ICF nor the Siemens had replied to emails as to whether the same is part of the arrangement with Indian Railways by Siemens.

The Siemens factory in Nashik, India, has been serving customers in India since 1987. Originally focusing on manufacturing electronic products such as programmable logic controllers, uninterruptible power supplies, and AC/DC variable-frequency drives, the Nashik Works have evolved over time and today it manufactures signaling products for railways and tailor-made engineered cabinets for automation systems and variable-frequency drives etc.

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