HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
News
Electronics & Test

Energy Storage Could Make Electric Trains More Efficient

NO RATINGS
View Comments: Oldest First|Newest First|Threaded View
Page 1/3  >  >>
Beth Stackpole
User Rank
Blogger
High visibility, high utility
Beth Stackpole   7/5/2012 7:45:21 AM
NO RATINGS
Wow. Very cool idea and great application of energy storage technology. Also a great test case for other cities and rail systems. My big question is who is paying for this pilot? It's got to be very expensive and with funding so tight for infrastructure-type projects across the country, I'm assuming this owned by the private sector. What's the likelihood that something like this has legs for being applied to other rail systems?

ttemple
User Rank
Platinum
Why not manage schedules?
ttemple   7/5/2012 8:43:35 AM
NO RATINGS
It looks like the energy could be managed by controlling who is starting and who is stopping, who is going up hills and who is going down hills, etc.  I didn't realize that they ever dumped energy.  I just figured things balanced out as some trains were stopping or going down hill while others were starting or going up hill, etc.  You would think that an intelligent scheduler could manage things such that energy storage was not needed.

I would think it would only take slight timing changes to keep the loads balanced to where you wouldn't have to dump energy, or store it.

tekochip
User Rank
Platinum
Metrics
tekochip   7/5/2012 2:12:06 PM
It would be nice to see some numbers on how much energy could be saved and what they believe the ROI time would be.

naperlou
User Rank
Blogger
Intelligent storage
naperlou   7/5/2012 2:20:16 PM
NO RATINGS
This is a great use of technology to enhance efficiency.  It seems like a trend.  Large diesel locomotives have begun using hybrid technology as well.  Similar to this idea, they capture energy generated during breaking to provide low latency energy for acceleration.  Thus, the diesel engines can be used more efficiently. 

As Beth asks, I wonder how much this costs.  Of course, the real metric is the cost to benefit ratio.  Even a costly battery is worth it if it saves money on electricity from the utility.

Jerry dycus
User Rank
Gold
Re: Metrics
Jerry dycus   7/5/2012 4:39:36 PM
NO RATINGS
 

  The ROI  and EROI isn't going to be good with this system, battery though using lead or molten salt might be cost effective near stations.

GE is currently doing a molten salt hybrid train Loco  that would be a better way.

The only reason the voltage might go too high is high resistance in the 3rd rail not able to pass the power along and train operators slowing the train too fast.  Training the engineers would be more cost effective eliminating the problem.

In the Rockies trains were scheduled so when one was going down it's energy was used to run another up the mountain.  They stopped that back when oil got so cheap.

 

warren@fourward.com
User Rank
Platinum
Energy Storage Could Make Electric Trains More Efficient
warren@fourward.com   7/5/2012 6:53:56 PM
NO RATINGS
Now we're talking!  What a great practical use of wasted energy.  Especially when going down hill with megatons of load!  I hope there is a future for this energy and it doesn't continue to go to waste. 

Now, how can we do the same with other big systems on a large scale?  The problem is, I can't think of anything to compare with trains.  They are unique in this way.  Good luck to Saft.

Charles Murray
User Rank
Blogger
Re: Metrics
Charles Murray   7/5/2012 8:43:19 PM
NO RATINGS
To some degree, they are in unexplored territory here, tekochip. Although regenerative braking and power assist have been done, the concept of piggybacking frequency regulation on top of regenerative braking in an application like this is new. Over time, the pilot will tell them more about the ROI.

TJ McDermott
User Rank
Blogger
Portable
TJ McDermott   7/6/2012 12:26:50 AM
NO RATINGS
The image shows what looks like a somewhat standard shipping container.  Portable, 1.5 MW containers of power.  What could you do with that?

Mydesign
User Rank
Platinum
Re-generation of Energy
Mydesign   7/6/2012 2:03:16 AM
NO RATINGS
1 saves
"An energy storage project in Philadelphia promises to capture braking energy and provide a voltage boost for electric trains"

Charles, what would be the amplitude of this barking energy. Since most of the components in braking systems are electro-hydraulic components, I feel that only a little amount of energy can be regenerate in normal course (Am not sure). But anyway regeneration or reusing the energy is the best part.

Mydesign
User Rank
Platinum
Re: Energy Storage Could Make Electric Trains More Efficient
Mydesign   7/6/2012 2:07:54 AM
NO RATINGS
1 saves
Warren, am totally agreeing to your concept. It's the time to think about energy conservation, regeneration and exploring natural energy sources. Even am thinking further about generating energy, while train runs through the track.

Page 1/3  >  >>
Partner Zone
Latest Analysis
Bigger than an iPhone 6 Plus, but smaller than an iPad Air 2. What am I? If you answered iPad Mini 3, you are correct.
Here are 10 robots that are designed to work effectively and safely with humans.
The data breaches at Target, Home Depot, and elsewhere have inadvertently highlighted a separate and unexpected problem: bad user interface design.
What if you could recharge your mobile device using the movements you make all day? Thats the promise of Ampy, a new device by a Chicago-based startup of the same name.
Peter Riendeau of Melexis shows how a time-of-flight sensor can be used for gesture recognition in a vehicle.
More:Blogs|News
Design News Webinar Series
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Nov 3 - 7, Engineering Principles behind Advanced User Interface Technologies
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Last Archived Class
Sponsored by Littelfuse
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service