Permanent magnet generator refers to a power generation device that converts mechanical energy converted from thermal energy into electrical energy. It was first successfully developed by France.
Permanent magnet generators have the advantages of small size, low loss, high efficiency, etc. Nowadays, when energy conservation and environmental protection are increasingly valued, its research is very necessary. Brushless can be achieved in many cases, so it is mostly used in small and micro motors. When using variable frequency power supply, the permanent magnet motor can also be used in the speed-regulating drive system. With the continuous improvement and perfection of the performance of permanent magnet materials, permanent magnet motors have been widely used in various fields such as household appliances, medical equipment, automobiles, aerospace and national defense.
The generator has two rotors and one stator. The rotors are on both sides of the stator. The rotor is composed of a ring of permanent magnets. The power and voltage of the generator depend on the size of the permanent magnet, the diameter of the coil and the number of turns.
There is a difference between an iron core and a non-iron core. The electric vehicle motor is a disc motor with an iron core. It can also generate electricity without modification. When the generator is loaded, it will sink. The price of making a strong magnet for a permanent magnet generator is very high. If you are playing with it, you can make a small one. If there is a small strong magnet in the motor of a scrap electric car, you can play with it. The coil can be used to find broken car horns. It is a disk-shaped horn, not a snail. There are coils in the disk-shaped car horn, so it is convenient to use, but you need to use 12 coils of the same type of horn.
Working principle of permanent magnet generatorThe stator structure and working principle of the permanent magnet generator are the same as the AC asynchronous motor, mostly in the form of 4 poles. The three-phase windings are arranged according to the three-phase and four-poles, and the energization generates a 4-pole rotating magnetic field.
The difference between a permanent magnet synchronous motor and an ordinary asynchronous motor is the rotor structure. Permanent magnet poles are installed on the rotor, and the permanent magnet poles are installed on the circumferential surface of the rotor core, which is called a convex-mounted permanent magnet rotor. The polarity of the magnetic poles and the magnetic flux go to the right. This is a 4-pole rotor. According to the principle of minimum reluctance, that is, the magnetic flux is always closed along the path of minimum reluctance, and magnetic attraction is used to pull the rotor to rotate, so the permanent magnet rotor will rotate synchronously with the rotating magnetic field generated by the stator.
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