Based on the principle of electromagnetic induction, the relative movement of a conductive fluid (gas or liquid) and a magnetic field generates electricity.
When the conducting fluid passes through the magnetic field B in the channel, an electric field E is induced in the direction perpendicular to the magnetic field and the flow velocity due to electromagnetic induction. is connected to an external load, the conductive fluid will be the energy can be directly converted into electrical energy and emitted outside.
This can eliminate some of the intermediate energy conversion processes in ordinary generator sets. Therefore, this type of power generation is also called direct magnetic fluid power generation. The main components of this type of power generation device are. energy production channels, electrodes and magnetic fields.
Detailed information
The generation of magnetic energy comes from Faraday's law of electromagnetic induction.
In August 1831, Faraday wound two coils on both sides of the soft iron ring, one of which was a closed loop, with a magnetic needle placed in parallel near the lower end thread, and the other. was connected to the battery and connected to the switch. A closed loop with power supply is formed. The experiment found that when the switch is turned on, the magnetic needle deflects; when the switch is turned off, the magnetic needle deviates in the opposite direction, indicating that an induced current appears in the coil without a battery.
Faraday immediately realized that this was a transient, non-constant effect. He then conducted dozens of experiments and summarized the situations that produce induced current into five categories: changing current, changing magnetic field, constant currentmoving, magnet moving and conductor moving in the magnetic field, and formalized these phenomena under the name electromagnetic induction.
Furthermore, Faraday discovered that the induced current generated in different loops of metallic conductors under the same conditions is proportional to the conductive capacity of the conductor. He therefore understood that the induced current is caused by the induced electromotor. force that has nothing to do with the properties of the conductor Even if there is no loop and no induced current, the induced electromotive force still exists.
Later, Lenz's law, which determines the direction of the induced current, and Faraday's law of electromagnetic induction, which describes the quantitative law of electromagnetic induction, were given. (The formula was not given by Faraday himself) And according to the different causes, the induced electromotive force is divided into two types: the electromotive force cinetic and the induced electromotive force. The first comes from the Lorentz force, and the second comes from the rotational force. electric field generated by the changing magnetic field.
Baidu Encyclopedia - Magnetic Fluid Power Generation
The professor did an experiment on a manual generator for us during the class, and the phenomenon was that the The light bulb flashed, and later the teacher said that the current The size and direction changed
I did this experiment and it was the same as in the video, but it didn't There was obviously no energy production in the video. was false. The method of winding the coil in the video itself is wrong, because the two poles of the ring magnet are on the upper and lower planes and the magnetic field lines pass from one pole to the other. The plane of the coil in the video is parallel. magnetic field lines, and no magnetic field lineswhat passes through it, where does the coil generate current? When I saw the results of the video, I felt perplexed. Today, through experiments, it has been proven to be false, pretentious and boring.
The direction of the alternating current changes back and forth. You can understand this by looking at the generator diagram. The bulb flashes and lights up. When it is turned on, it is powered, when it turns off, that is when the current turns, and when it turns back on, it is powered in the opposite direction, and the cycle repeats itself.