Best Way To Design Reverse Torque/Braking System

[Scion]

Hello,

In essence I'm trying to design a system that can apply varying amounts of torque to a rotating shaft for variable amounts of time. This torque may be applied in the direction of rotation or in the opposite direction of rotation.

So my setup would have an engine attached to a transmission which is then attached to a rotating shaft all mounted in a fixed position in the "lab". This engine has its own independent acceleration and braking mechanism as well. Braking is accomplished by restricting the shaft rotation. Let's call this "System A"

At the end of the shaft is a hub to which I can connect my "reverse torque" system to. Let's call this "System B"

So "System A" will be run independently accelerating and braking through a separate control mechanism/user. Then at various times, essentially random times, I want "System B" to apply a variable torque value to this hub in either the same direction of rotation or opposite direction of rotation for a specific duration of time. This time duration may have a maximum of about 10 seconds or so but most often less, say closer to about 2-3 sec.

System B needs to be quite responsive and must be able to provide say about 80% (still to be evaluated) of the engine torque for system runs of about 10-15 mins before "recharging" etc...if required.

I hope all this is clear enough

I've been looking into various technologies to use to provide the "reverse torque" such as an electric motor, electro-mechanical, electro-hydraulic, hydraulic etc... but I'm not sure which would be best in terms of cost, size, maintenance etc...as I don't have much experience/knowledge in those areas.

On average engines in System A will have a range up to about 300HP but I would like the system to accomodate higher power engines as well, say to about 600HP.

So I'm not sure if an electric motor of sufficient power is available to provide enough "reverse torque".

From my basic research perhaps an electro-hydraulic or hydraulic system using hydraulic motors & pumps may have enough power.

Ideally I would like System B to be as small as possible with enough power to do the job while hopefully not costing an enormous amount.

I really would appreciate some help in getting this design started.

Thanks.

 

[ScottyUK]

A motor with a regenerative drive exporting power back into your site would be a reasonably simple and cost-effective way to do this without dumping huge amounts of heat into your facility. I'd suggest asking questions specific to this type of dyno in forum237 with a link back to this thread.


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