Regenerative braking - question

[ozbob]

Does anyone know which train units have regenerative braking, that is generate electricity when braking.

I don't think EMUs do, but which of the others has.

[ozbob]

SMU200, SMU220, SMU260, EMU, IMU100, IMU120, IMU160, ICE

ALL have Blended Regenerative electric and electro-pneumatic --> http://www.queenslandrail.com.au/AboutUs/MediaCentre/Fleet/Pages/Fleet.aspx

[somebody]

But what happens to the electricity generated under braking?  I thought it was passed through a resistor bank, at least in an EMU.

[ozbob]

But what happens to the electricity generated under braking?  I thought it was passed through a resistor bank, at least in an EMU.

Don't know, trying to find out if it gets fed back into the grid ...

[petey3801]

EMU has dynamic braking (mix of electric and pneumatic) which goes to grids under the unit and expelled as heat (which is why you often see a lot of heat haze coming from under an EMU cars 1 and 2).

The ICE would be the same as the EMU, I'd say (i'm not qualified on the ICE, so not 100%).

All the other units have regen back into the overhead.

On the Gold Coast Line, I was told some time back by a manager that roughly one in every 7 trains down there is effectively run for free, due to the regen braking going back into the grid.

[ozbob]

Excellent, thanks.