The Fascinating Engineering behind Electric Trains! 

Small correction needed. Multiple motor axles are in place to improve the traction. Because we can transfer the required power through a single motor, but the traction force depends on the friction between wheel and rail which is a limiting factor for an axle. By increasing more number of axles we can get enough traction to pull the train.

Americans watching this and wondering what alien civilisation is this

This channel is just perfect, the way you first address the issue with a particular technology and then another technology that fixes that issue, always makes me smile. The animation is spot on and narrator's voice is great for these types of videos. Certainly much much...…. much better than most of the college engineering classes. Oh yeah, and the way you appreciate the technologies explained in your videos so deeply is just awesome.

Fascinating. How efficient are all those rectifiers and transformers? I imagine they must emit a lot of heat.

Some bogies are 4 wheel while some are 6 wheel. Typically 6 wheel is on heavier, slower but higher torque engines like for freight trains while faster passenger trains have 4 wheel bogies. The one shown in the animation is the ES-64 from Siemens which has 4 wheel bogies. This is directly related to the ACS-64 that Amtrak uses on the Boston-NYC Northeast Regional and on trains to Harrisburg PA.

This is a very interesting video. I am Japanese train geek and I translate and play the auto-generated subtitles, but I would like to have English subtitles that match the narration, as there are some parts where the auto-generated subtitles are not sufficient.

The way the first set up is shown, is actually how General Electric built the Milwaukee Road "Bipolar" electric locomotives in 1919.

what a narration and animation...class ..Technology becomes World class with beautiful presentation!!!!

Great explanation, BUT: 8:01 the function of a spring isn't shown correctly.

I like the video it is very informative. However I have one problem with the animation. The locomotive powering the railjet is an OEBB 1116 (or "Taurus" or "Siemens ES64U2") has 4 axles (two per bogie) and it is primarily build for 15kV and 25kV, but minor details.

Complex topics explained in a very simple manner with the help of nice animation. Superb content !

As a train driver a call most things in this video wrong. 1st. spring in pantograph is for lowering it and air pressure for rising. You have it wrong in animation. 2nd. The rails are not grounded but they conduct current back to the power point (Power stations, transformers, etc) 3rd. Braking system of locomotives is not like on coaches. We directly apply air pressure to braking cilinders, that's why it's called direct brake. Spring is there for parking brake. Also, on locomotives is so-called three way valve so it can brake just like coaches.

This is Fascinating and driving me back to where I started to know more and more and keep refreshing.

There was fitter killed in UK just by removing axle box covers to UAT the axles , the pan had been left up and loco was drawing power for auxiliary's . All was ok till he removed last axle box cover then his body became part of the circuit between axle and bogie frame for the 25 kv . Also the ground bonds on the track can be lethal if disconnected

I love these videos! Now that I have a basic understanding I don’t feel as mystified while taking trains and streetcars.

Having studied transformers, AC-DC conversion, rectifiers (in semiconductors), and basic mechanics during my engineering entrance exam prep, I can't be delighted enough to know that all of this knowledge is actually used in the real world and runs our lives! Thank you Lesics, you're amazing!

You are best in explaining

Thank you for such a clear and informative explanation.

Can you guys bring a video about the engineering behind rollercoasters? It's amazing too! Thx for the contents 😊

Only thing missing in this video is how each of the important components (transformer, rectifier, inverters) look like in an electric multiple unit. Otherwise this is the best video of how electric locomotives work I've seen yet. Thank you!

That's very impressive.. Lots of respect and appreciation to the creater.... ❤️❤️

Best video to understand step by step about the traction mechanism in Railways

Wow. U simplified it fantastically. Thank U

Wow I just learned 40 hours of classroom knowledge in this short video. 😊

Its ookkkkayyyy ... I know every molecule of a Pantograph now ... Enough 🥲🥲🥲🥲🥲

What an amazing animation! Thank you for your efforts. Keep up doing this great educational work!

What an incredible animation

Engineers supercharge your practical engineering knowledge here 👌💯💯🇺🇲

Great video and impressive explaining 👏 Just for additional information the secret of engineering behind this technology is in the power conversion and changing between greed distribution power and the system Motor .the system Motor rechange the power when it turns in downward sloping direction and become generator power so we always take advantage of the purely mechanical movement in this case

Very good video, but a small correction. there are 2 braking systems on a train. the service brake and the parking/emergency brake. the service brake needs air pressure to brake, this is used all the time, for stations, signals, etc. The parking/emergency brake is permanently pressurized and the line is bleed to brake, as explained in the video. This is used only in case of emergency or to park the train for the night per exemple.

This channel is highly underrated. Suberb work :O

In the EU, many systems use DC as base, no rectification needed. In the Netherlands it is 1500v only. The first design you showed for the single phase electric motor or even dc motor was used quite extensively. Power reduction was done using a bank of resistors on top of the train, heating up the surrounding air. That was quite inefficient of course. Modern induction motors, transformers and stepping circuits are very efficient.

Wow, so easy to understand how the circuit completes.

Thank you for sharing such a beautiful presentation

Thank you for the great effort and the fantastic explanation.

Im glad u updated the video about the sagging of oh lines. ,👏

Thanks for the detailed explanation with differentiating step by step implementation

Amazing guys !! 🤩🤩🤩 As I am a student , it's very useful for me to understand and imagine the things , rather than bookish knowledge.

Thanks for sharing this beautiful video

Thx for uploading this.

Thank you so much for this.

some things have been forgotten, there are 2 brakes, the "train brake" and the "Ind. brake", which work slightly differently being the same brake, and in my opinion a very important thing, the air tank. The pressure of a long train will take forever to regain enough bar to release all the brakes without a tank to store that compressed air in the loc. In other words, without it a long train will brake and take a while to manage to speed up again

to complete the train series, please explain about the train signalling and the engineering behind it..

Thank you very much for the insight ❤

Well done. Right on track

Excellent Excellent Excellent

I can imagine the level of maintenance needed for this train to operate efficiently

thank you for this ❤️❤️

You are animation king 🤴

Great efforts to explain as spoon feeding. Well done..

Just pure quality content

Beautiful presentation!

thank you again

Fantastic Animation and voice over , iam a science teacher and found this the best ever tutorial !!

So informative video. Thank you ❤

Extremely brilliant presentation

🔥🔥🔥 These fires came while listening 🎧....

Great Explanation Thanks

absolutely amazing

I'm so happy that you made the videos about electric trains, recently I started to ask myself how they work

Thanks a lot!

Excellent presentation.

This is my new favorite channel

Brilliant animation..tks to the internet..many of us get free education on so many things..

Thanks!

I want to meet whoever invented this and shake his hand because that's some wizardry over there

Thank you

Outclass explanation

Excellent job!

Mindblowing!😊

Fantastic

Thank you Sir

Ok, this video explains quite well how do electric engines generally work. But I noticed one huge mistake regarding to pneumatic brakes. In today's brake systems the brake cylinder is normaly empty when the brake is released. When you want to slow down you actually don't release the pressurised air from the brake cylinder, but the air flows from pipes which lead throw the whole train exactly into the brake cylinder, and overforces the spring inside. The purpose of the spring is to release the brakes, and not to apply a brake force becouse the power of the spring is not enough to brake a train which weights several hundreds of tons. No accidents have been noticed due some failure between cylinder and brake switchboard which is a device providing filling the cylinder from pipes. A proof about this fact is when you pull the brake lever in drivers cab, and you can see how the pressure in pipes is decreasing, and cylinders are filled, and the train starts to brake. That all means that the system works oppositely, than it was described in the video. But still, good job, keep on.

Excellent explanation…please make such more important videos..surely I have liked,subscribed and shared the video 👍👍👍

Thanks for the information Love this video

thanks ❤❤❤

Excellent presentation

Ultimate 😊

You guys are doing an amazing job. Thanks for all the informative videos 🙂

This was awesome

Hi @Lesics Great work as usual. I was hoping you guys can make a 3D visual and animation related to Astronomy (used in Civil Engineering, Surveying). No one has touched this topic on RU-vid. I would really appreciate if you would even think about this idea and explain the definitions via visuals. Thank you.

This is really informative

Excellent work...

Nice to see

Loved the video a lot!.

Such nice details video of electric train

thank you sir

Outstanding description....

Thankyou verymuch sir

Awesome video

Great job

Beautiful animation !!!

So cool.

brilliant animations and explanation!

Thankyou ❤❤❤❤❤

Fantastic explation.superb

Really you did a great job sir

Very informative

How do subway trains work with 3rd rails?