1000kw 500rpm 400v 50hz Fuel Free Permanent Magnet Generator Alternator

Product Drawing

Technical Parameter

Detailed Pictures

What is the permanent magnet generator?

A permanent magnet generator is an electrical machine that generates electrical power from the mechanical energy of a rotating shaft. The generator consists of a rotor, which contains permanent magnets, and a stator, which contains the windings. When the rotor is rotated, the magnetic field of the permanent magnets induces an electrical current in the windings of the stator, which is then transferred to the load. The generator does not require an external power source to create the magnetic field, as the permanent magnets provide a continuous source of magnetic energy. Permanent magnet generators are commonly used in renewable energy applications, such as wind turbines and hydroelectric plants, as they are highly efficient and reliable.

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 permanent magnet generator uses the principle of electromagnetic induction in that the wire cuts the magnetic field line to induce an electric potential and converts the mechanical energy of the prime mover into electrical energy output. It consists of two parts, the stator, and the rotor. The stator is the armature that generates the electricity and the rotor is the magnetic pole. The stator is composed of an armature iron core, uniformly discharged three-phase winding, machine base, and end cover.

The rotor is usually a hidden pole type, which is composed of excitation winding, iron core and shaft, guard ring, center ring, and so on.

The excitation winding of the rotor is fed with DC current to generate a magnetic field close to the sinusoidal distribution (called the rotor magnetic field), and its effective excitation flux intersects with the stationary armature winding. When the rotor rotates, the rotor's magnetic field rotates together with it. Every time a revolution is made, the magnetic lines of force cut each phase winding of the stator in sequence, and a three-phase AC potential is induced in the three-phase stator winding.

When the pm generator is running with a symmetrical load, the three-phase armature current synthesizes to generate a rotating magnetic field with synchronous speed. The stator and rotor fields interact to generate braking torque. The mechanical torque input from the turbine overcomes the braking torque and works.

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.

No-load voltage

Full-load voltage

Power Curve

Torque curve

Benefits:

1. High efficiency: PMGs are highly efficient and can convert up to 90% of the mechanical energy into electrical energy. This means that they require less fuel or energy input to produce the same amount of electricity as other types of generators.

2. Low maintenance: PMGs have fewer moving parts than traditional generators, which means that they require less maintenance and are less likely to break down. This makes them a more reliable and cost-effective option in the long run.

3. Environmentally friendly: PMGs are a clean and renewable source of energy that produce no emissions or pollutants. They are an excellent option for off-grid applications or for powering remote locations where traditional power sources are not available.

4. Versatility: PMGs can be used for a wide range of applications, from small-scale residential use to large-scale industrial and commercial applications. They can be used to power homes, businesses, farms, and even entire communities.

5. Cost-effective: PMGs are generally more cost-effective than traditional generators, especially over the long term. Although they may have a higher upfront cost, their lower maintenance and fuel costs make them a more affordable option in the long run.

Overall, PMGs are an important technology for the future of renewable energy. As the world continues to shift towards cleaner, more sustainable sources of energy, PMGs will play an increasingly important role in meeting our energy needs.