Re: SBB Cargo Changes


Am 07.09.2019 um 21:29 schrieb John Beaulieu:
So these locomotives have the ability to convert variable frequency
AC as generated by the traction motors to 16.7 Hz AC to be fed back
into the contact line? Otherwise they would be limited to one speed
in regenerative braking as the AC frequency generated by the motors
would depend on their rotational speed and the number of poles.
Aren't you thinking of three-phase motors?

Already the Crocodiles Ce 6/8" (1920-22) came with a regenerative brake which was designed by Behn-Eschenburg. I can't explain you in detail how it works. But basically you need an excitation with 16.7 Hz from the transformer/overhead line.

Markus, G├╝rbetal

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