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Group 3 satyam
- 9. PRIVATEANDCONFIDENTIAL
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Propulsion & Control(PPC)
Pantograph- Maintains Link between catenary and power circuit of locomotive.
Circuit Breaker- Protects the power circuit in kind of any fault.
Transformer- Receives the high voltage from catenary and step down to desired level.
Rectifier- Converts the low voltage A.C supply to D.C supply.
Main Inverter- Converts the D.C power to 3-Phase A.C Power to drive 3-phase A.C
supply.
Auxiliary Inverter- Supplies the power to another parts of locomotives like fans ,
compressors, blowers.
Compressors- Maintains the cooling/heating requirement in locomotive.
Battery- Supplies the necessary starting current and also power up the essential circuits
such as emergency lighting.
D.C Link- Connects the rectifier and Inverter circuits.
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- 12. PRIVATEANDCONFIDENTIAL
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Regenerative Braking:
Regenerative braking is a concept to utilize the heating energy.
Whenever brakes are applied all the heat energy generated by friction is
converted into the electricity by brake blending register and fed back into
catenary by the necessary mechanism.
Synchronous rectifier is used between AC Catenary and the Locomotives
internal DC Bus.
Regenerative Braking is much easier when the catenary supply is DC because
DC Traction Motors automatically become generators when throttled below
the actual speed of the train.
- 19. PRIVATEANDCONFIDENTIAL
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Code of Ethics & Business Practices
It explains the standard of behavior that Bombardier Inc. expects of you
in our daily activities & dealing with others.
Company Property:- It should be used for legitimate purposes & not expose it to
loss, damage, misuse & theft.
Intellectual Property:- It comprises trademarks, industrial designs, copyrights &
trade secrets.
Communication:- Employees should be truthful & straightforward in their
dealings & not intentionally mislead colleagues, customers or suppliers.
Conflict of interest:- It is a situation where your personal activity conflict with
responsibility to bombardier.
Political Activity:- You may seek election or other political activity but must notify
your supervisor or compliance officer to discuss impact your involvement may
have on your duties at bombardier. You may express your views but it must be
clear that views expressed are not those of bombardier.
19
- 20. PRIVATEANDCONFIDENTIAL
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Code of Ethics & Business Practices
In case you found that provision of code has been breached, you
should speak to one of the following:
Your supervisor.
Your HR representative.
Your Legal service representative.
An internal Audit representative.
The next level of management.
Generally, your supervisor should be able to resolve the issue rapidly. If report a violation &
it is not investigated, raise it with one of the other contacts listed above.
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- 21. PRIVATEANDCONFIDENTIAL
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MITRAC TCMS
TCMS functions has been divided into three sections:
Comfort Section
Neither safety related nor critical
Passenger Comfort,
Operation Section
Not safety related but mission critical
Functions that perform basic control of
a train
Safety section
Safety related function up to SIL2
TCMS platform offer products & functions to support the
implementations of safety related functions, e.g braking, door opening etc.
- 22. PRIVATEANDCONFIDENTIAL
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MITRAC TCMS
Hierarchical Network Structure:
Some basic design Criteria which indicate a hierarchical n/w structure:
Comm. b/w consist shall be based on internationals standards to achieve interoperability.
Comm. Inside a consist can be, but not recommended, proprietary to one manufacturer.
The break-down of the comm. System within one consist shall not compromise the comm. in or
b/w other consists.
The break-down of the comm. b/w consists shall not affect the comm. Inside a consist.