The maglev train uses the principle of magnets of the same sex to repel and opposite sex to attract, so that the magnets have the ability to resist gravity, so that the car body is completely off the track, suspended about 1 cm from the track, and travels in the air, creating a near-zero height The miracle of space flight.
What is the principle of maglev train
The maglev train uses the principle of repulsion of the same sex and attraction of the opposite sex, so that the magnet has the ability to resist the gravity, so that the car body is completely off the track, suspended at a distance of about 1 cm from the track, and travels in the air, creating a near-zero altitude space flight. Miracle.
A maglev train is a train propelled by magnetic levitation force (that is, magnetic attraction and repulsion). Due to the magnetic force of its orbit, it is suspended in the air and does not need to touch the ground when walking, so there is only air resistance. The research on maglev technology originated in Germany. As early as 1922, German engineer Hermann Kempel proposed the principle of electromagnetic levitation and applied for a patent for maglev train in 1934.
The principle of maglev train
Maglev trains Since magnets have two forms of same-sex repulsion and opposite-sex attraction, maglev trains also have two corresponding forms:
The first is a magnetic levitation train with an electromagnetic operating system designed by using the principle of homosexual repulsion of magnets. It uses the repulsive force generated between the magnetic field formed by the superconducting electromagnet on the car and the magnetic field formed by the coil on the track to make the car body levitate. of the railway.
The second is a magnetic levitation train with an electric power running system designed using the principle of magnet opposites attracting each other. It installs magnets on the bottom of the car body and on the top of the reverse turns on both sides, and sets them above the T-shaped guide rail and below the outrigger part respectively. The reaction plate and the induction steel plate control the current of the electromagnet to maintain a gap of 10-15 mm between the electromagnet and the guide rail, and balance the repulsive force of the guide rail steel plate with the gravity of the vehicle, so that the vehicle body is suspended on the guide rail surface of the lane run.
Advantages and disadvantages
Advantages: Maglev trains have the advantages of high speed, low noise, environmental protection, economy and comfort.
Disadvantages: Since the maglev system relies on electromagnetic force to carry out levitation, guidance and driving functions, once the power is cut off, the maglev train will have serious safety accidents, so the safety measures of maglev after the power cut are still not completely resolved. The impact of strong magnetic fields on human health, the balance of the ecological environment and the operation of electronic products still needs further research.
Post time: Sep-06-2022