TRACTION PRODUCTS MOHAMED SABITH KT M110212EE

Locomotive Designation Based On Input Energy Source Steam Locomotives Diesel Locomotives - Diesel Hydraulic - Diesel Electric Electric Locomotives - AC - DC 2

Anatomy Of Electric Locomotive Vehicle Control Electronics Bogie Traction Converter Traction Transformer 3

Bogie Powered Axle .

Contemporary Propulsion System

AC Drive Implementation - Locomotive 25 kV, 50 Hz, 1Ø DC Link = ~ 3 Ø IM ~ 4Q Control Front End 3 Ø Inverter Near Unity Power Factor Harmonic Reduction on Line Current….Staggered Pulsing Between Converters, Between Bogies, Between Locos, Between Trains

Converter Controls – Overview

Converter & Vehicle Control Electronics Converter Electronics

GTO Based Traction Converter

ADVANTAGES OF 3 PHASE AC DRIVE TECHNOLOGY : 3 Phase technology uses GTO Thyristors / IGBTs and Pulse Width Modulation (PWM) techniques on the Converter as well as the Inverter side with digital controls for driving 3 Phase Squirrel Cage Induction Motor. 3 Phase technology has the advantage to work at Unity Power Factor and draws sinusoidal current from the catenary. Use of regenerative braking results in energy saving upto 30%, giving fast payback. Use of Squirrel cage Induction Motors results in virtually no maintenance as compared to conventional DC Drive systems.

Regenerative Braking Pneumatic braking Electric braking has fast response-no air requirement Fast to act Fast to release No wear of brake components-higher life of components Braking energy is not wasted but back to the grid Measurements show savings range between 12-30%

CONTD…. At an average cost of electricity a 3-Phase loco will produce electricity worth Rs 7.33 Crore in its service life. Taking the present cost of 3-Phase loco as Rs 13 Cr, the loco pays back more than half of its cost by regeneration only These are self debt-servicing locomotives

Locomotives with BHEL equipments Passenger Loco WAP 7 WAP 5 Freight Loco WAG 9

AC EMU

Limitation with GTO based system Crux – Present System Limitation with GTO based system Requires large gate drivers and snubber circuits, hence higher losses Obsolescence of power device GTO and electronic components Proprietary ASIC’s and Hybrid circuits Platform dependant control architecture, RTOS and software tools Proprietary protocol, inability to configure third party hardware & software

Future Trend 3 Phase AC Electrics for 7000 HP Loco IGBT Based 3 Phase AC Electrics for 7000 HP Loco 3 Phase 6000 HP AC Loco 3 X 130KVA Auxiliary converter for 6000HP loco 500KVA Hotel load Inverter FPGA

Customer’s Profile Railway Board -> Initiate development projects for AC EMU/LOCO tender. RDSO -> Nodal agency for all technical approvals CLW -> Manufacturing of AC Locomotives Invites tender for 6000 HP Converter/ Inverter Systems DLW -> Manufacturing of Diesel locomotives Invites tender for 4500 HP Converter/ Inverter Systems ICF Chennai -> Manufacturing of AC EMU/DEMU equipment (1600 HP)

PROPULSION SYSTEMS Product Present Technology Know how available New Likely Gain Status Expected EDN Business 6000 HP AC LOCO GTO ( BT Design) BSA entered with STRUKTON and 5 sets of traction Converter (along with 3 sets of Aux. Converter) ordered on STRUKTON Retain Present Business Know How BHEL got order for 5 sets of Traction Converter for Retro fitment of GTO equipment by IGBT equipment. BHEL has quoted with Struckton for 30 sets loco. BHEL – L1. Substantial qty of orders expected. Total for all Loco and EMU systems indicated by IS in XI plan is Rs.870 Crores. VCU MICAS based ( B T Design) BSA with STRUKTON Signed for TCN Based System 3 sets order received (Rs.15 Million). Order placed on STRUKTON 7200HP NIL IGBT - TOSHIBA Up-gradation to 7200 HP MOU route Limited Know How. MOU signed with Toshiba in May 07 Single tender for 10 sets being addressed . Technical Offer submitted. Critical PCBs and Software not covered. IS to pursue . 10000 – 12000 HP AC Freight Locos for DFC Dialogue to be initiated with Toshiba once IR finalises the specifications. Continuation of Toshiba Loco technology at EDN for manufacturing Decision awaited from IR.

PROPULSION SYSTEMS Product Present Technology Know how available New Technology Likely Gain Status Expected EDN Business 4000 HP Diesel loco NIL IGBT Technology Know How BHEL quoted for 85 sets Loco eqpt. along with Strukton BHEL – L4. Development order may be expected. Total for all Loco and EMU systems indicated by IS in XI plan is Rs.870 Crores. 1600 HP AC EMU / MEMU GTO (AC/ DC EMU Traxis Design ) STRUKTON BSA with M/s Strukton signed on 15/11/2007. Prototype built. Development BHEL quoted recently for 60 sets AC EMU eqpt. along with Strukton. BHEL – L1 DEMU BSA with Strukton signed on 15/11/2007 BHEL quoted for 2 sets DEMU eqpt. along with Strukton. Under Evaluation. EMU for Urban Transprtn. IGBT Technology EMU – DMRC type Partner to be identified - IS

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