OEM ODM Service Energy Saving 50kw 300rpm 400V 60HZ Permanent Magnet Alternator

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What is the permanent magnet generator?

The permanent magnet generator is a device that converts mechanical energy to electrical energy. In this device, the rotor windings have been replaced with permanent magnets. Permanent magnet generators are used mostly in industrial applications like turbines and engines to produce commercial electrical energy, the permanent magnet alternator is an alternate source of energy and has multiple benefits which make it a great device for a variety of residential, commercial, and industrial applications.

The structure

The permanent magnet generator is mainly composed of a rotor, end cover, and stator. The structure of the stator is very similar to that of an ordinary alternator. The biggest difference between the structure of the rotor and the alternator is that there are high-quality According to the position of the permanent magnet on the rotor, the permanent magnet generator is usually divided into a surface rotor structure and a built-in rotor structure.

Working Principle

The magnetic field theory is the fundamental principle behind the operation of a PMG. It states that a magnetic field is produced around a magnetic material, such as a permanent magnet when it is subjected to an electric current. The strength of the magnetic field is directly proportional to the magnitude of the electric current flowing through the material.

The direction of the magnetic field is determined by the direction of the electric current. The magnetic field lines form a closed loop around the magnetic material, and the strength of the magnetic field decreases with distance from the material.

A PMG consists of a rotor, which is a rotating shaft, and a stator, which is a stationary component. The rotor is made up of a permanent magnet, which produces a magnetic field around it. The stator consists of a set of coils, which are wound around a magnetic core.

When the rotor rotates, the magnetic field produced by the permanent magnet interacts with the magnetic field produced by the coils in the stator. This interaction induces an electric current in the coils, which is then converted into electrical energy.

The strength of the electrical energy produced by the PMG is directly proportional to the strength of the magnetic field produced by the permanent magnet and the speed of rotation of the rotor. The faster the rotor rotates, the higher the frequency of the electrical energy produced.

In summary, the magnetic field theory is the fundamental principle behind the operation of a PMG. The interaction between the magnetic field produced by a permanent magnet and the magnetic field produced by a rotating shaft generates electrical energy, which can be used for various applications.

Features

① The generator has many poles, which improve the frequency and efficiency, saving the cost of rectifiers and inverters.

② Finite Element Analysis is used when designing the generator, compact structure. Low startup torque, solves the problem of small wind startup, improving wind energy utilization.

③ Leave out the gear increaser, improve the reliability and efficiency of the generator, and lower the amount of maintenance.

④ H class insulation, vacuum pressure impregnation.

⑤ Have many structures such as vertical axis, horizontal axis, internal rotor, external rotor, and plate type.

⑥ Strong rotors, the generator could achieve high speed.

⑦ Small size, lightweight, high energy density, suitable for special situations.

⑧ Run efficiency throughout the whole speed range, high efficiency.

⑨ Use imported high-speed oil-contained bearings, maintenance free, and high reliability.

2. Variable speed generators provide a solution for Hydro Industry.

Increased efficiency from variable speed technology could make many more small hydro sites economically feasible to develop.