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Re: Dynamic brakes - AC units
Author: Max Wyss
Date: 11-03-2015 - 12:07

With AC, it is pretty much the same.

Regenerative braking in electric locomotives exists for a good 100 years. The motors are excited with the same AC current (in order to be in phase when feeding back the energy to the wire).

Modern electric units have 3-phase AC motors, which can work as generators even better. Accordingly configured power electronics then convert the 3-phase AC to DC, and then back to single-phase AC (if running under AC).

In diesel engines, the created energy gets dissipated in resistor grids, as in the olden times.

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Subject Written By Date/Time (PST)
  Dynamic brakes - AC units Bruce Butler 11-03-2015 - 11:35
  Re: Dynamic brakes - AC units Max Wyss 11-03-2015 - 12:07
  Re: Dynamic brakes - AC units Dr Zarkoff 11-03-2015 - 14:49
  Re: Dynamic brakes - AC units FormerElectrician 11-03-2015 - 20:09


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