TRACTION PRODUCTS MOHAMED SABITH KT M110212EE. Locomotive Designation Based On Input Energy Source...
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Transcript of TRACTION PRODUCTS MOHAMED SABITH KT M110212EE. Locomotive Designation Based On Input Energy Source...
TRACTION PRODUCTS
MOHAMED SABITH KT M110212EE
Locomotive Designation
Based On Input Energy SourceSteam Locomotives
Diesel Locomotives
- Diesel Hydraulic
- Diesel Electric
Electric Locomotives
- AC
- DC
Anatomy Of Electric Locomotive
Bogie Traction TransformerTraction Converter
Vehicle Control Electronics
Bogie
.
Powered Axle
Contemporary Propulsion System
AC Drive Implementation - Locomotive
=
~
3 Ø IM~
3 Ø IM~
4Q Control Front End
Near Unity Power FactorHarmonic Reduction on Line Current….Staggered Pulsing
Between Converters, Between Bogies, Between Locos, Between Trains
25 kV, 50 Hz, 1Ø
DC Link
3 Ø Inverter
Converter Controls – Overview
Converter & Vehicle Control Electronics
Converter Electronics
Vehicle Control 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
Freight Loco
WAP 5
WAP 7
WAG 9
AC EMU
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
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)