Development and Design of Permanent Magnet Generators Pmg Generators

1: Simple structure and high reliability. The permanent magnet generator eliminates the excitation winding, carbon brush and slip ring structure of the excitation generator, and the whole machine has a simple structure, which avoids the easy burning and disconnection of the excitation winding, carbon brush and slip ring structure, and the whole machine has a simple structure. It avoids the failures such as easy burning and disconnection of the excitation winding of the excitation generator, and easy wear and tear of the carbon brushes and slip rings, and the reliability is greatly improved.
2: Small size, light weight and high specific power. The use of the permanent magnet rotor structure makes the internal structure of the generator very compact, and the volume and weight are greatly reduced. The simplification of the permanent magnet rotor structure also reduces the rotor moment of inertia, increases the practical speed, and achieves a high specific power (ie, the ratio of power to volume).
3: Good power generation performance at medium and low speed. In the case of the same power level, the output power of the permanent magnet generator is twice as high as that of the excitation generator at idle speed, that is, the excitation generator of the actual power level of the permanent magnet generator.
4: It can significantly prolong the life of the battery and reduce the maintenance work of the battery. The main reason is that the permanent magnet generator adopts a switching rectification and voltage regulation method, which has high voltage regulation accuracy and good charging effect. The shortening of battery life caused by overcurrent charging is avoided. The head-type rectifier output of the permanent magnet generator uses a small current pulse to charge the battery, and the charging effect is better with the same charging current, thereby prolonging the service life of the battery.
5: High efficiency. Permanent magnet generator is an energy-saving product. The permanent magnet rotor structure eliminates the excitation power required to generate the rotor magnetic field and the mechanical loss of friction between carbon brushes and slip rings, which greatly improves the efficiency of the permanent magnet generator.
6: The use of self-starting voltage stabilizer does not require an external excitation power supply. The generator can generate electricity as long as it rotates. When the battery is damaged, the car charging system can still work as long as the engine is running. If the car does not have a battery, as long as the handle is turned or the car is rolled, the ignition operation can also be realized.
7: Especially suitable for working in humid or dusty harsh environments.
8: Radio interference. The permanent magnet generator has no carbon brush and no slip ring structure, which eliminates the radio interference caused by the friction between the carbon brush and the slip ring; eliminates electric sparks, and is especially suitable for working in an environment with a high degree of explosive danger, and also reduces the power of the generator. requirements for ambient temperature.