What is the power of a maglev train? What does it pull to move the train forward?

<> repulsive force makes the train hang, and attraction makes the train move.

Introduction to maglev trains

Maglev train is a modern high-tech rail transportation tool, which realizes contactless suspension and guidance between the train and the track through electromagnetic force, and then uses the electromagnetic force generated by the linear motor to pull the train to run.

The principle of maglev trains.

Since the magnet has two forms, the magnet repels and attracts the opposite, so the maglev train also has two corresponding forms

1.The magnetic levitation train of the electromagnetic operation system designed by using the principle of homogeneous repulsion of magnets uses the repulsion force generated between the magnetic field formed by the superconductor electromagnet on the car and the magnetic field formed by the coil of the track to make the car body levitate the railway.

2.The magnetic levitation train of the electric power operation system designed by using the principle of magnet opposite-sex attraction is to install magnets at the bottom of the car body and the top of the reverse steering on both sides, and the reaction plate and the induction steel plate are respectively set up above the T-shaped guide rail and below the outrigger part, so that the current of the electromagnet is controlled, and the gap between the electromagnet and the guide rail is maintained at 10-15 mm, and the repulsion force of the guide rail steel plate is balanced with the gravity of the vehicle, so that the car body is suspended on the guide rail surface of the lane.

Therefore, the maglev train uses the principle of "the same sex repels each other, and the opposite sex attracts", so that the magnet has the ability to resist gravity, so that the car body is completely off the track, suspended at a distance of about 1 cm from the track, and takes off, creating a miracle of almost "zero altitude" space flight.

The contactless suspension and guidance between the train and the track are realized by electromagnetic force, and the electromagnetic force generated by the linear motor is used to pull the train to run.

The maglev train operating in Shanghai is the world's first commercial maglev special line, connecting the urban area to the airport, reaching a speed of 430 kilometers per hour, and a distance of 30 kilometers in only 8 minutes.

The maglev train can run at high speed without an engine, and it is also the application of magnet suction and repulsion to push the train forward, after being energized, they will become a section of electromagnets with n poles and s poles, the n pole of the track magnet and the n pole of the magnet on the train will push the train forward, the next section of the track magnet n machine and the train magnet s s s attract the train to pull the train forward, and the electromagnet on the track will continue to change the magnetic pole according to the progress of the train to ensure that the maglev train continues to move forward, Magnetism can both levitate and propel the train forward.

(1) The maglev train uses the magnetic poles of the same name between the train and the rail to repel each other or use the magnetic poles of different names to attract each other, so that the train and the rail are separated from each other and reduce friction

2) When the maglev train and the rail are separated from each other and there is no air resistance, the movement speed is no longer affected by external factors

Answer: The new maglev train uses magnets with the same name poles to repel each other or the opposite-name poles to attract each other; The train travels in a vacuum, separated from the contact surface, so that the frictional resistance is close to zero, and the speed is not affected by the outside world when moving

There are three basic principles of maglev trains:

The first principle is that when the magnetic field near the metal changes, the electrons on the metal move, creating an electric current.

The second principle is the magnetic effect of electric current. A magnetic field is created when an electric current flows through a wire or a piece of metal. The energized coil becomes a magnet.

The third principle is that magnets interact with each other, the same polarity repels each other, and different polarities attract each other.

The maglev train is mainly composed of a suspension system, a propulsion system and a guidance system. While it is possible to use a propulsion system that does not rely on magnetic forces, in most current designs, the functions of these three parts are done by magnetic forces.

The maglev train is a modern high-tech rail transportation tool, which realizes contactless suspension and guidance between the train and the track through electromagnetic force, and then uses the electromagnetic force generated by the linear motor to drive the train.

In 1922, the German engineer Hermann Qiangso proposed the principle of electromagnetic levitation, and then applied for a patent. Since the 70s of the 20th century, with the continuous enhancement of the economic strength of industrialized countries, Germany, Japan, the United States and other countries have successively carried out the research and development of maglev transportation systems to improve transportation capacity and meet the needs of their own economic development and people's lives.

The power of a maglev train** is a linear synchronous motor, also known as a coil, which is an electric motor that is used to provide power through electromagnetic induction. It consists of a coil on the body and a coil that holds the magnet on the ground. When an electric current is passed through the body coil, it creates a magnetic field in motion.

This magnetic field causes the generation and interaction of electric fields in the magnets fixed on the ground. This interaction is sufficient to lift the train and keep it in levitation, while when the current changes, the train moves at a corresponding speed.

A maglev train is a high-speed train that does not require tracks like traditional trams, but uses magnetic levitation technology for levitation, which reduces friction with the tracks and reduces noise and vibration. The maglev train has better stability and safety when running at high speeds, and its speed can reach a higher speed than that of traditional rail transit. Not only that, but maglev trains also have lower energy consumption and less air pollution.

In addition to the coil motor, the maglev train also has other important components, such as the maglev system, hydraulic system, control system, etc. Its magnetic levitation system consists of permanent magnets, electromagnets, and air cushions, which work together to achieve the levitation of the train. The hydraulic system is responsible for controlling the height and position of the train, thus keeping the distance from the ground constant.

The control system is the most critical part, which controls the speed and steering of the train through sensors and a computer to ensure the stability and safety of the train.

Maglev train is a new type of high-speed transportation, which uses the advantages of modern science and technology to continuously improve the speed and performance of the train, and has a good development prospect and application prospects. However, due to the complexity and high cost of magnetic levitation technology, it is difficult to achieve large-scale commercial application at present. Only in the case of continuous technological progress and cost reduction in the future, the maglev train can become a major means of transportation, bringing more convenience and benefits to people's travel.

The maglev train takes advantage of the characteristics of magnets that repel the same sex and attract the opposite sex.

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 gravity, so that the car body is completely off the track, suspended at a distance of about 1 cm from the track, and drives in the air, creating a miracle of near-zero altitude space flight.

The maglev train is a kind of train propelled by magnetic levitation, which realizes the non-contact suspension and guidance between the train and the track through electromagnetic force, and then uses the electromagnetic force generated by the linear motor to pull the train to run.

Because the magnetic force of its track makes it suspended in the air, reduces friction, different from other trains need to touch the ground when walking, only by the resistance from the air, the speed of high-speed maglev train can reach more than 400 kilometers per hour, and the medium and low-speed maglev is mostly in 100-200 kilometers per hour.

The maglev train is mainly composed of three parts: the suspension system, the propulsion system and the guidance system. Although it is possible to use a propulsion system that is not magnetic, in the vast majority of current designs, these three functions are performed by magnetism.

Maglev train classification

1. According to the types of electromagnets used in maglev trains, they can be divided into two categories: normal conductive attraction type and superconducting repulsion type. Constant attraction and superconductivity repulsion.

1) Constant attraction type.

The normal conduction attraction maglev train is to use the constant conductance magnet and the guide rail as the magnet conductive body, and the air gap sensor is used to adjust the size of the suspension gap between the train and the line, in general, the size of the suspension gap is about 10mm, the running speed of this maglev train is usually in the range of 300-500km h, which is suitable for intercity and suburban Zen transportation.

2) Superconducting repulsive type.

The superconducting repulsive maglev train is the use of ultra-leakage conductive magnets and low-temperature technology to achieve suspension between the train and the line, the size of the suspension gap is generally about 100mm, this kind of maglev train does not levitate at low speed, and only levitates when the speed reaches 100km h. Its maximum operating speed can reach 1000 km h, and of course its construction technology and cost are much higher than those of the permanent attraction maglev train.

2. According to the suspension technology, there are two kinds of maglev trains according to the suspension mode: electromagnetic attraction suspension (EMS), permanent magnetic suspension (PRS) and induction repulsion suspension (EDS).