Date: 2024-10-05 Page is: DBtxt003.php txt00012079 | |||||||||
Railway Technology | |||||||||
Burgess COMMENTARY | |||||||||
👍2016 New MAGLEV Japan Magnetic Levitation Train https://youtu.be/-wlS3HM1C70
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0:04yeah
0:10yeah
0:12yeah
0:17the dream of 500 kilometer an hour super high-speed rail travel has become a
0:23reality in 20 27 the superconducting maglev will operate on a new to ocean
0:28consent line on today's program we experienced a ride on the Maglev test
0:32line and look at the big picture of Japan's next generation high-speed rail
0:35sets
0:37yeah
0:39yeah
0:42yeah
0:43welcome to Japan Railway journal
0:48today's program is all about the superconducting magnet which will
0:52operate on a neutral shinkansen line due to open in 20 27
0:56so today we're here at the Yamanashi prefectural my glove exhibition set
1:03here at the center visitors can get up close to the superconducting magnet as
1:10well as stepping inside a vehicle that was used on earlier test runs gets can
1:14learn about super conductivity through interactive devices and experience
1:19floating ride for themselves
1:21the lobby is also extremely popular because here visitors can see the
1:25superconducting magnet flash by the very very soon
1:29superconducting maglev will be passing by said 500 kilometers per hour
1:34Wow
1:37yeah
1:40cool
1:41I went into fractions
1:54ya wanna scream at someone you on you
2:01haha
2:02yes
2:05ok
2:06the engineers that simple nothing happened
2:09I think this
2:11so let's find out a little more about it
2:16the railway Technical Research Institute began working on a linear propulsion
2:22system in 1962 with the aim of connecting tokyo and osaka in just one
2:28hour development of the successor to Japan's famous bullet train had begun
2:34ten years later in nineteen seventy-two they successfully built the world's
2:41first super conducting magnet vehicle
2:45with the test line being only 480 meters long and factoring in the stopping
2:50distance is required
2:52the vehicle wasn't able to run it more than 60 km/h
2:59yeah
3:00for that reason in 1977 the Japanese national railway constructed a seven
3:06kilometer long test line in Hue City miyazaki prefecture
3:10the first test vehicle was the ml500 the 500 in the name was an indication of the
3:16developers intention to reach the 500 kilometers per hour mark the ml500 did
3:22just that in 1979
3:25when set a new world record for an unmanned run for the speed 517 come to
3:30power hour
3:34nineteen eighty inverted t-shape guideway was changed to a u-shaped
3:39guideway and the vehicle was made more box like with space for passengers
3:44the new vehicle was named ml you 0 0 1 he added you standing for the new
3:49u-shaped guideway
3:53numerous test runs were conducted with the ml you 0 0 1 and when safety had
3:59been checked and rechecked the first manned run was made in 1982
4:07then 90
4:09the ml users are one set a new world record for him and run after achieving a
4:14speed of 400 . 8 km/h
4:20in 1995 the ml you 002 n set a world record speed 411 km/h form and run
4:29however because the miyazaki test line was only seven kilometers long
4:34vehicles could only run at high speeds for around 1 minute for practical
4:38testing a longer test line was needed and so construction began on the 43
4:43comments along line in Yamanashi
4:47test runs on new yamanashi magnet test line began in nineteen ninety-seven in
4:541999 a speed of 552 km/h achieve breaking the previous world record for a
5:00man
5:01yeah
5:04then in 2013 the new l0 series the model that will actually be put into operation
5:10on the line debuted two years later in 2015 it set a new world record of 603
5:16km/h
5:19that's a big over there isn't it
5:23that's right and today we actually get to write it
5:26- I'm so excited
5:30and this superconducting maglev technology is something that Japan can
5:35be proud of a very advanced one of the engineers have had a very great effort
5:40to actually realize it and we're seeing the fruits today
5:44can't wait let's get an overview of the new shinkansen line
5:49the jewel shinkansen line will initially run from shinagawa Tokyo to Natalie
5:55passing through five pre pictures between the two cities and the Japanese
5:59out most of the 286 , - line will run through a tunnel their plans to then
6:05extend the line to osaka by 2045 although the route is yet to be
6:09finalized this means there will be two high-speed lines connecting Tokyo to
6:13Osaka but because the Tokaido Shinkansen is a major transport artery
6:17the new maglev line will provide a welcome alternative route especially in
6:21the aftermath of a major disaster
6:24in December eighteenth 2015 construction began on the most difficult section of
6:29the line
6:30the section passing through the Japanese Alps
6:33in January 2016 construction began on the terminal at Shinagawa station in
6:38Tokyo
6:39construction will cost an estimated 45 million dollars
6:43all of which will be covered by the central Japan Railway Company themselves
6:46the fastest service between Tokyo and now we will take just 40 minutes
6:52that's 15 minutes faster than the Tokaido Shinkansen it will take an
6:57estimated one hour seven minutes to make the journey from Tokyo to Osaka the
7:01trains top operating speed will be 500 kilometers per hour
7:09each train is estimated to carry around 1,000 passengers
7:18in order to reduce air resistance the ceiling has been lowered and the cars
7:23cross sectional area has been reduced to less than that of the Tokaido Shinkansen
7:27because eighty-six percent of the line is in a tunnel
7:30the focus is clearly on speed rather than a view for the passengers
7:37there are also efforts to explore the technology to the US
7:44we release 27.3 imbalance in the u.s. to complete a study of the connection
7:53between washington d.c Baltimore using this technology and said that story will
7:59do for you
8:02the Japanese government is contributing around seven million dollars for
8:06developing possibilities for the technology in the US
8:11the first line will initially run for 60 kilometers connecting washington d.c
8:15Baltimore which will take just 15 minutes
8:19the line will then be extended 360 kilometres to New York connecting the
8:24two cities in just one hour
8:31tokura Navajo inject one on came with me today Fiona
8:38yes once the chin constant opens that will make a very on Tokyo belonging to
8:45the same metropolitan area and I will you know spark various innovations like
8:52the economic innovation or industrial innovation even cultural innovation
8:57so dr. Shapiro huge no way up our comedy convicted yet
9:04I've heard that compared to the high dose in cancer now between shindig on
9:09mokuba the price increases only going to be around six dollars some costs around
9:15one hundred dollars
9:20so once the line extends Josiah the airline industry would have probably no
9:28chance of actually continuing their service from Tokyo has happened
9:33he said cara mia homicides cheat Honest kiddo you're free body three and four
9:39and internet so using these super conducting magnets that literally lift
9:43the train off the guideway is truly amazing technology
9:46so let's find out a little more about it the system works by using these super
9:53conducting magnets installed on the vehicle and metal coils installed along
9:57the guideway together they generate a magnetic force that lifts the train
10:00about 10 centimeters about the guideway and it runs at Super Bass speeds when
10:06metal is super cooled its resistance to electricity become zero a phenomenon we
10:11call super conductivity the coils are closed and in a superconductive state so
10:17on a permanent electric current is passing through them a stable magnetic
10:20field is generated
10:23a linear motor is a conventional electric motor that you find on trains
10:27that has been done rolled into a straight line
10:31the superconducting magnet mounted onto the vehicle itself is the same as the
10:35moving rotor part of the motor
10:37while the coils installed along the guideway are equivalent to the static
10:40State apart
10:44a superconductive state is produced by using liquid helium to call a niobium
10:48titanium alloy to near absolute zero
10:51that's - 260 nine degrees Celsius to make the superconducting maglev vehicle
10:58levitate and move requires a really strong magnet
11:06the polarity of the magnet on board the train is set to North positive on the
11:12guideway the polarity in front of the vehicle is reversed to the negative or
11:16South was behind it it's set to the same north
11:20in this way the vehicle is pulled from the front by attraction and pushed from
11:24behind by repulsion
11:28with careful timing the flow of electric current is rapidly switched along the
11:32walls of the guideway accelerating the train
11:34the larger the current flowing the stronger the magnetic force becomes and
11:38the fast the train can accelerate
11:47to be able to switch the polarity in the walls of the guideway and alternating
11:52current is used that can switch its flow at 60 times a second
11:57in this way the attracting or repelling magnetic forces are created then by
12:06adjusting the frequency and the direction of the alternating current we
12:11can control the speed of the Train
12:18superconducting magnets are installed on the train itself was the levitation and
12:23guidance coil which is shaped like a figure eight are embedded in the
12:27guideway together they create the magnetic forces needed to levitate the
12:30train
12:31so how exactly to these figure eight coils make the train
12:36levitate when the superconducting magnets past these coils they induce a
12:42voltage
12:42however when the train is running on wheels the same voltage is induced in
12:47both the lower and upper portions of the coil then no electric current can flow
12:52and this means no magnetic forces are generated but when the Train reaches
13:01sufficient speed the wheels and then retracted and the training is able to
13:05float
13:06this is because the position of the superconducting magnet is a little lower
13:10in the guideway and this means the voltage is induced are now different
13:13creating an electric current and more importantly magnetic force the polarity
13:20of the superconducting magnet on the train and the lower part of the figure
13:24eight coil is now the same last the upper part of the coil is the opposite
13:28this results in a pushing force from below and an attractive pulling force
13:32from above and the train floats
13:35compared to conventional wheel trains superconducting maglev system doesn't
13:41require friction to accelerate which is why it can achieve speeds over 500
13:46kilometers per hour and there are other benefits to Rio maintenance is no longer
13:51necessary
13:52and it's more eco-friendly co2 emissions being around one-third that for
13:56airplanes
13:59to reduce air resistance the bird bill shaped front of the vehicle called a
14:04double cusp and was first decided on
14:06after much trial and error however when high-speed trains travel through tunnels
14:13they create a lot of impact points to address this problem and reduce air
14:18resistance even further
14:19the present 15 meter long front was developed
14:26shadow got married the first thing we worked on was reducing the vehicles
14:31cross sectional area as much as possible with the Shinkansen which is a
14:36conventional high-speed train things like transformers and other control
14:41devices are installed under the cars but mega vehicles work differently
14:47all that is required to put the vehicle in motion are the superconducting
14:52magnets compared with the Shinkansen we lowered the height of the vehicle and
14:58reduce the cross-sectional area by twenty percent
15:04meanwhile the cross-sectional profile of the tunnel has been increased by twenty
15:10percent the front configuration and cross-sectional area of the vehicle
15:17along with the shape of tunnels significantly reduce air resistance
15:23gimme a second it is Amanda cable to banana
15:26well number one is the speed that exceeds 500 kilometers per hour
15:32now in Shanghai there is an maglev train that which is the top speed of |