Great intro video 👏👌 Electric locos have evolved over time - from DC traction with series motors , to 25Kv AC supply, driving 3ph Induction motors , with regenerative braking. Intresting journey, indeed !
@@k.p.thukasingamk.p.thulasi6967 WAP 7 is designed to run at a cruising speed of 130 to 140 kmph. Also WAP 7HS is a high speed version of conventional WAP 7 which can attain speed upto 160 kmph
Though it's a very good informational video but I think there should be more detailing about the internal working procedures. The current video seems to be an outline of the topic - how electric locomotives work. Rather than this hsort video, I will advise to make a longer video illustrating each and every processes in details.
I found that in earlier version the incoming 25KV is stepping down to 1200 volt and fed to Silicon controlled rectifier for converting AC to DC. Then this DC supply used to drive DC series Traction motor. Not any AC supply to Traction motor. Please clarify. Your video is good.Thank you
No explanation is given, how the pantograph works. That over head wires is not strung up in straight line, but varies allowing wire to WIPE pantograph from left to right during contact. This action prevents the wire from cutting into the carbon recepticle. A very important part of the lectricity collection.
In lower DC voltage supply systems, the initial transformers and rectifiers are installed trackside. Some of the auxiliary inverters could be used to power passenger cars. You can also scale this down to an EMU where space for the engines has been confined to the bogies (wheel sets). This enables higher passenger capacity as well as faster acceleration.
It is explained first ac current is converted to DC current. DC current is converted again as ac current. What is the principle and logic behind this? Can you explain
To get the most appropriate frequency for a given speed and load. And to get 3-phase current when the traction system is based on 3-phase AC induction motors. (Not all traction systems work that way though.)
The lines doesn't stay in one spot because it will cut the pantograph The lines are arranged in zig zag position distributing the lines equally on the surface of pantograph
How much wear a tear does the patgraph collector bar cuse on the overhead line. How do they stop the friction and overheating on the collector bar and power lines?
@@shashank5r : agreed. Further, wiper on pantograph is usually a carbon bar that eventually wears down. It is replaceable. The overhead wire wears as well and is eventually replaced.
Solar isn't efficient enough to run large motors. It would take days of solar charging to run the train a short distance. There might be potential for solar to run less demanding circuits like lighting (like in an RV).
@@RandomIdioticGuy we don’t need a nuclear plant running through cities, lol , also the complexity of minimising the volume, just put up a stationary plant and run the train via the existing transmission lines
The motors need 3 phase to work, the line is a single phase, and is at 400 kV to reduce power loss. The loco needs to step it down for the motors and convert it to 3 phase.
@@QuantumBraced It basically receives a 25 KV power supply, single phase. A transformer is used to step down the voltage, suiting to motor winding insulation. A single phase power cannot be usefully converted into three phase (as the motor needs 3 phase supply), it is initially converted into DC, later inverted into AC supply of 3 phase.
I wonder what this is like on electric multiple units. Where are each of the components usually located, and how different are they in size? What I learned from this video though is that the transformer, rectifier, and inverters are crucial components.
The rail is the second wire. The TWO wires at the top are actually NOT two. They are one wire in fact. The top wire suppotrs the lower wire AND keeps it at a LEVEL, horizontally so that the pantograph keeps in touch constantly. No curves for the wire. It shall stay straight.
@@benmmbk765 ok understood.But how the current completes its journey.Does it go to the tracks finally.Suppose the electrical engine is stationary and someone touches the track..will the person get electrocuted..
In Sweden and Norway 16kV max 4 kA and 16 2/3 Hz (near DC) and Denmark 25kV/15kV but 50Hz (?), this sounds very wrong? Germany might use 16kV and same highvoltage netfrequenzy as Swe/Nor. France, Belgium, Neatherland and Finnish: I REALLY DON'T KNOW! Anyone correct me, If I am wrong? Please!
In Italy, the power supply on traditional railway lines is 3000V DC. The high-speed lines are powered at 25kV AC. All the latest generation locomotives are designed to work with all the voltages used in Europe. The motors are always three-phase AC. If the power supply is 3000V DC this is conveyed directly to the power inverter and to the subsequent control. If, on the other hand, the power supply is alternating current, this passes first from the transformer and then from the rectifiers to the power inverter and to the control. In this case there is a double transformation A.C./D.C./A.C.
@@carl-gunnarhillefors7612 Germany, Switzerland, Austria, Sweden and Norway use 15kV 16 2/3 Hz Belgium 3kV DC Netherlands 1.5kV DC France and Finnland 25kV 50Hz
We r getting single phase ac supply of 25kv.. many components like blower motors compressor etc runs in 3phase, and dc supply is given to traction motors
@@ivannipaidea970 Probably you're right. I am more into subway EMUs. Those work at 600 - 900 Volts DC, so they don't need to reduce voltage as the IGBT can operate at 1200 V
circuit inside the WAP 7 is different then you explain. in transformer extra winding is provided for auxiliary inverter. auxiliary inverter is not sharing common DC link with traction inverter.
Depends on the specific train power requirements, but one example of a 8-car electric multiple unit is that it needs 2.7MW. If you say you are running at 70mph, say roughly would take 9 hours then to run 1000km (s=d/t). So I believe you can just times by 9 to get electricity used in your 1000km journey (The units for electricity consumed is normally measured in kW/hrs). I read a TESLA car =122.75W hr/per passenger/ per km whereas an electric train = 50-52 W hr/per km/ per passenger
One main question want to asked is In mumbai local train same concept used but near some stations internal train power(lights,fans) gone for a minute then come back or power deep happens can u please explain y this is happen
Railway engineering syllabus is reduced in civil engineering syllabus. So we want to take academically.. Detail class for virtual railway engineering..
Q | Why surge arrester needed in electric Tran?
Answer plz
For protecting the electrical equipment from over-voltage short-circut during lightning and from the internal switching
Very much needed
@@chiranjithalder3890 i can give answer
@@chiranjithalder3890 i am an locomotive engineer
Very nice video. WAP 7 is the most successful locomotive of the Indian Railways.
_"Electric locomotives are locomotives"_
That is some intro wisdom right there.
I remember that माज़े आई दादा हे भजन गायचे। 40/45 years back. अप्रतिम भजन, सुंदर गायन।
Great intro video 👏👌
Electric locos have evolved over time - from DC traction with series motors , to 25Kv AC supply, driving 3ph Induction motors , with regenerative braking. Intresting journey, indeed !
ಜೈ ಶ್ರೀ ರಾಮ್ 🙏 THAN Q"LET'S GROW""for presenting suuuuuper video about ELECTRIC TRAIN . explained well and give the KNOWLEDGE !!! ❤️
Nice information boss. Well done.
Your video are precise and to the point keep it up
The torque produced by a 3 phase induction motor is unbeatable !
the reluctance motor is better
Is for control of speed and torque with Eletronic Variable systems and that is achieve with DC
Everything is good. unfortunately 110kmph is very bad , this type of train want to running minimum 160kmph that's proud of this invention
@@k.p.thukasingamk.p.thulasi6967 WAP 7 is designed to run at a cruising speed of 130 to 140 kmph. Also WAP 7HS is a high speed version of conventional WAP 7 which can attain speed upto 160 kmph
@@BlackBirdNooB 00000000
Great video. ☺️
Though it's a very good informational video but I think there should be more detailing about the internal working procedures. The current video seems to be an outline of the topic - how electric locomotives work. Rather than this hsort video, I will advise to make a longer video illustrating each and every processes in details.
This awesome I love trains so much more please i seen two of your videos ( from Singapore 🇸🇬 )
I am watching from Chennai, India. Here it is widely used mode of transport.
Dear Admin you are making videos related to my interest , that Locomotives and Railways. A big Thanks
Kindly Focus on the Coaches also. 👍👍👍
th-cam.com/video/VhP9AggB0WI/w-d-xo.html
Good. job. bro.🤵.....💯👌👍
I am assistant loco pilot from India 🇮🇳
Great information bro👍
th-cam.com/video/VhP9AggB0WI/w-d-xo.html
@@rahulkumarmishra682content is great for me but I want information in English for better understanding
I found that in earlier version the incoming 25KV is stepping down to 1200 volt and fed to Silicon controlled rectifier for converting AC to DC. Then this DC supply used to drive DC series Traction motor. Not any AC supply to Traction motor. Please clarify. Your video is good.Thank you
Previous version was DC series motor driven now changed to 3ph Induction motor driven.
Tysm this helped my college assignment
Excellent explanation
Nice video brother, love from India.
It's an indian channel
Nice Explanation 😄
The overhead lines do not always carry an AC voltage. Some countries do have rail lines that run on DC current.
India has converted 100 Percent of overhead lines into AC
Very good and simple. But remember some electric locomotives us DC (Direct Current)
Yes sir
I believe that was explained.
Wow
Dare is no search thanks as a electric locomotives 😡😠🤬😤😒💢
അറിവുകൾ അമൂല്യമാണ് നന്ദി
Brilliant technology and services that can help to run it faster
Nice presentation and explanation
Thanks a lot
Just add more information....but that was a good explanation 😎
Love all your videos! I learned a lot from all!
Excellent
Only one panto is used to get supply from ohe
You are right.
It depends dutch DC locomotives sometimes use two Pantos if the draw a lot of current whilst moving slowly
Fentastic explanation
Great !!
Super explain
Can you make icf bogie braking mechanism with animation...?
Great explain
No explanation is given, how the pantograph works. That over head wires is not strung up in straight line, but varies allowing wire to WIPE pantograph from left to right during contact. This action prevents the wire from cutting into the carbon recepticle. A very important part of the lectricity collection.
It's just a basic idea about how it's actually works
Good video!
Cool! Me myself i like VR SR1 & VR SR2 locomotives.
Thank you soo much ❤️😊
Fantastic video
Good
Thank you so much 🙏
In lower DC voltage supply systems, the initial transformers and rectifiers are installed trackside. Some of the auxiliary inverters could be used to power passenger cars. You can also scale this down to an EMU where space for the engines has been confined to the bogies (wheel sets). This enables higher passenger capacity as well as faster acceleration.
Trabalho incrível parabéns
👍👍👍👍👍👍👍👍👍☝️
you should give more details so that we can learn easy
Kindly put a detailed video on electric system which is used in Metro trains
Waiting for this video
Amazingandgood😂😂
Thank you
Hey can you explain the grounding system of the Electric Locomotive.
good explanation..why honking ? pls avoid it
👍👍👍👍👍👍👍👍👍👍👍
Sir plz give the detail information regarding electric locomotive
Thanks brother
ALL FUTURE RAIL SHOULD BE ELECTRIC IF WE WANT TO BE SUPER POWER UP TO 2047....
It is explained first ac current is converted to DC current. DC current is converted again as ac current. What is the principle and logic behind this? Can you explain
Me too don't understand can anyone explain this?
Because,traction motor are working on three phase AC current,
To get the most appropriate frequency for a given speed and load. And to get 3-phase current when the traction system is based on 3-phase AC induction motors. (Not all traction systems work that way though.)
Very well explained in brief.
The lines doesn't stay in one spot because it will cut the pantograph
The lines are arranged in zig zag position distributing the lines equally on the surface of pantograph
Sir Is three phase suply fully AC supply from the reactifier
Or having some ripple factor
Wow what a nice video electric engine running
What program you using
Put Video on intetnal working of magnetic contactor with auxiliary contactor
Can you make internal converters all functions Animation also make air break and parking break Animation....
But thanks for this Video 👍
Are you Indian? if you are really from India then yes, finally we are utilizing our cheap rate internet in a good way now!!!....Subscribed
wap7- Indian Wide AC Passenger 7th gen 7000 HP electric rail engines.
How much wear a tear does the patgraph collector bar cuse on the overhead line. How do they stop the friction and overheating on the collector bar and power lines?
The over line should be arranged in a zig zag position so as to ensure the even wear out of the patgraph collector bar.
@@shashank5r : agreed. Further, wiper on pantograph is usually a carbon bar that eventually wears down. It is replaceable. The overhead wire wears as well and is eventually replaced.
You forgot to draw the returning path of the primary current.
Is it possible to put solar panels on top of the train instead??????????????????
Solar isn't efficient enough to run large motors. It would take days of solar charging to run the train a short distance. There might be potential for solar to run less demanding circuits like lighting (like in an RV).
@@redeyedfreaks nuclear energy definitely has potential tho
@@RandomIdioticGuy we don’t need a nuclear plant running through cities, lol , also the complexity of minimising the volume, just put up a stationary plant and run the train via the existing transmission lines
@@nikmat that's what i meant, handling huge nuclear plants inside engines in impossible
@@nikmat what about a Mr. Fusion machine?
I would like to request you to publish a video on LHB power transmission from HOG to guards compartments.
Forgot to mention that the circuit is completed by the train tracks/ground. That's why only one cable is used to provide electricity.
Would it be too much to ask content creators to do their own narration?
Let's grow up our channel 😁
All Railway Lines should be:
Broad Gauge /Triple/ Electric /Cover
How to meet God - Take a shot everytime he says locomotive
Why does it convert AC to DC and then back to AC, can't it just regulate the AC and use it directly?
The motors need 3 phase to work, the line is a single phase, and is at 400 kV to reduce power loss. The loco needs to step it down for the motors and convert it to 3 phase.
@@domesticterrorist483 Can't it just use a transformer to do that, why does it need to go through DC?
@@QuantumBraced
It basically receives a 25 KV power supply, single phase. A transformer is used to step down the voltage, suiting to motor winding insulation. A single phase power cannot be usefully converted into three phase (as the motor needs 3 phase supply), it is initially converted into DC, later inverted into AC supply of 3 phase.
@@domesticterrorist483 it is not 400 kV.
It is because transistors/thyristors (which are inside the 1P to 3P inverter) doesn't support AC, thus it has to be converted to DC first.
am I the only one who was bothered by both pantographs being raised?
It was depicted wrong even by the visual and ofc its just one in use.
That is the mistake of the artist. Don't worry.
*FAILED* to show a complete circuit...
th-cam.com/video/ThL4FFPrgW0/w-d-xo.html
you can see this also
Also when u r drawing only the phase from the pentagraph. Then how circuit is completed with no negative phase.
Yes, I assume the wheels supply the ground?
Power is returned through the rails into the ground
I think there is DC series motor is used to high torque
I wonder what this is like on electric multiple units. Where are each of the components usually located, and how different are they in size?
What I learned from this video though is that the transformer, rectifier, and inverters are crucial components.
Usually in the roof or under the train
Discussion about positive, negative, neutral is missing.How the current is completing the circuit.
Overhead wire one on top of other.Why 2 nos..
The rail is the second wire.
The TWO wires at the top are actually NOT two.
They are one wire in fact.
The top wire suppotrs the lower wire AND keeps it at a LEVEL, horizontally so that the pantograph keeps in touch constantly.
No curves for the wire.
It shall stay straight.
@@benmmbk765 ok understood.But how the current completes its journey.Does it go to the tracks finally.Suppose the electrical engine is stationary and someone touches the track..will the person get electrocuted..
@@Soumo_b No. The electrical circuit system is totally isolated from the passenger carrying part of the coach.
What is the supply voltage?. What is the voltage after converted by transformer
In Sweden and Norway 16kV max 4 kA and 16 2/3 Hz (near DC) and Denmark 25kV/15kV but 50Hz (?), this sounds very wrong?
Germany might use 16kV and
same highvoltage netfrequenzy
as Swe/Nor. France, Belgium, Neatherland and Finnish: I REALLY DON'T KNOW!
Anyone correct me, If I am wrong? Please!
In Italy, the power supply on traditional railway lines is 3000V DC. The high-speed lines are powered at 25kV AC. All the latest generation locomotives are designed to work with all the voltages used in Europe. The motors are always three-phase AC. If the power supply is 3000V DC this is conveyed directly to the power inverter and to the subsequent control. If, on the other hand, the power supply is alternating current, this passes first from the transformer and then from the rectifiers to the power inverter and to the control. In this case there is a double transformation A.C./D.C./A.C.
@@carl-gunnarhillefors7612 Germany, Switzerland, Austria, Sweden and Norway use 15kV 16 2/3 Hz Belgium 3kV DC Netherlands 1.5kV DC France and Finnland 25kV 50Hz
So this how the San Diego trolley system works.
Won't the conversion make some power loss ?
We had ac then it's was converted to dc and then to ac again, why? For variable frequency?
We r getting single phase ac supply of 25kv.. many components like blower motors compressor etc runs in 3phase, and dc supply is given to traction motors
So if the power fails, do the trains stop running?
Depends. If the supply is cut off a train may still be able to function (lights etc) but it won’t be able to move
@@MorganTheTimeLord I wonder about that… thank you!
From which country is this video from?
It was just the tip of the iceberg
Dont use song. Content is good but music irritating
Sir ap sa maine bhot bar poochha ki diesel engine start hone Mein Kitna diesel lagta hai🙏rply
Conversation is very useful but it wd be more useful when you add
Written vonversation with the video
Remove that background music while explaining
Train is Good
Factually incorrect about converters & Auxiliary converter.
However good animation. Rectification needed
If the line is DC, before transformers you need a inverter
If the line is DC you don't need power transformer. Just inverter.
@@akaikangaroo to reduce current use resistences, no? Or you introduce 3Kv in the inverter? (Sorry for my english 😞)
@@ivannipaidea970 Probably you're right. I am more into subway EMUs. Those work at 600 - 900 Volts DC, so they don't need to reduce voltage as the IGBT can operate at 1200 V
Oh come on!
Reduce the background music in upcoming videos. It's distracting.
I felt like a 1st standard student listening to quantum mechanics!
Explained the older one model
circuit inside the WAP 7 is different then you explain. in transformer extra winding is provided for auxiliary inverter. auxiliary inverter is not sharing common DC link with traction inverter.
How much electricity is used per trip of 1000km
Depends on the specific train power requirements, but one example of a 8-car electric multiple unit is that it needs 2.7MW. If you say you are running at 70mph, say roughly would take 9 hours then to run 1000km (s=d/t). So I believe you can just times by 9 to get electricity used in your 1000km journey (The units for electricity consumed is normally measured in kW/hrs).
I read a TESLA car =122.75W hr/per passenger/ per km whereas an electric train = 50-52 W hr/per km/ per passenger
How there on the pentograph in train engine
One main question want to asked is
In mumbai local train same concept used but near some stations internal train power(lights,fans) gone for a minute then come back or power deep happens can u please explain y this is happen
Neutral section may be
Railway engineering syllabus is reduced in civil engineering syllabus. So we want to take academically..
Detail class for virtual railway engineering..