Transformer and rectifier design

[govender1]

I'm in the process of designing a rectifier and a transformer ccmobination for a traction substation. What sites are available that I can use as refernce to assist me in my calculations.

 

[nbucska]

Try <

http://www.irf.com>

for rectifier. What is a traction substation? What kind of power do you need (DC V,A ?) <nbucska@pcperipherals.com>

 

[jbartos]

Suggestion: Visit
Suggestion: Any larger architectural engineering firm may be interested in power transmission line projects. E.g.

http://www.abb.com

http://www.siemens.de

http://www.alstom.com

etc.

 

[jbartos]

I beg your pardon: Correction:
Visit:

http://www.abb.com

http://www.siemens.de

http://www.alstom.com

etc. for more info

 

[electricuwe]

When designing DC-traction substation equipment some special requirements have to be considered:

Usually such rectifiers work with natural cooling which is quite unusual for rectifiers of that rating, efficient design requires heatsinks with a special design

The rectifier and the transformers has to be designed to be able to work according to the load profile, e.g. to be able to provide higher current than rated for several hour during rush hour

Rectifier and transformer have to withstand a short circuit until the breaker trips. Fuses are only used for removing defective diodes from the circuit

Beside this the transformer has to be designed for rectifier operation (to cope with nonsinusoidal currents) which is not an easy task in the power range used for that application.

If you are not willing to spend at least half a year of development and design time on that topic leave the order to companies already having 50 years of experience in that business.

 

[jbartos]

Suggestion: Visit

http://www.tionestop.com/railcat/Elec-S.htm

for:
RT/E/S/21019 Iss 1 Aug 96 Price Band D
Transformer/Rectifier Equipment for D.C. Traction Substations
This specification states the directorate's requirements for transformer/rectifier equipment for use in D.C traction substations. The specification sates requirements for overall performance and technical details including testing.
Mandatory upon : Railtrack Additional Information: Performance specification mandates testing Standards Ownership: Electrification & Plant