200KW Small Wind Turbine Generator 250RPM Lightweight Permanent Magnet Shaft Generator

Small And Lightweight Energy Efficient Permanent Magnet Generator

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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 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.

The classification of permanent magnet generator:

Permanent magnet generators (PMGs) can be classified based on various factors, such as the type of magnet, the application, the number of phases, and the power rating. Here are some common classifications of permanent magnet generators:

Based on magnet type: a. Ferrite Magnet PMG: These generators use ferrite magnets, which are less expensive and have a lower magnetic strength than rare-earth magnets. b. Rare-Earth Magnet PMG: These generators use neodymium or samarium-cobalt magnets, which are more expensive but have a higher magnetic strength than ferrite magnets.

Based on application: a. Wind Turbine PMG: These generators are designed for use in wind turbines and are typically used in small-scale or off-grid applications. b. Hydroelectric PMG: These generators are designed for use in hydroelectric power plants and are typically used in large-scale applications.

Based on number of phases: a. Single-phase PMG: These generators have a single output phase and are used in low-power applications. b. Three-phase PMG: These generators have three output phases and are used in high-power applications.

Based on power rating: a. Low-power PMG: These generators have a power rating of up to a few kilowatts and are used in small-scale applications. b. High-power PMG: These generators have a power rating of several megawatts and are used in large-scale applications, such as wind turbines and hydroelectric power plants.

These are some common classifications of permanent magnet generators, but there may be other ways to classify them based on specific parameters.

Features

1. The permanent magnet generator rotor adopts rare earth permanent magnet steel, no external excitation, no carbon brush, no sparks, no excitation winding, high motor rotor strength, no excitation control box, high generator efficiency, compact structure, and high reliability. The volume-to-weight ratio of the electric excitation generator with the same parameters is reduced by 30%, which reduces the construction cost.

2. The generator can achieve low rated speed, eliminating the need for gearbox pulleys, etc. The hydraulic turbine directly drives the generator to improve system efficiency. The generator can output power frequency 50HZ at low speed. With the grid-connected inverter, the turbine can be released. In the dry season, the generator set runs at low speed and supplies power to the grid through the inverter; during the summer wet season, the turbine can eat more water, and the generator set runs at high speed, which can generate more electricity. The generator runs efficiently throughout the speed range.

3. Protection level: IP54, to prevent water, mud and dust from entering the inside of the motor, and has a long service life. It is especially suitable for field needs. It is widely used in wind power, hydropower, ocean power and other new energy power generation occasions.

4. The motor is air-cooled or water-cooled, and the temperature is low. The motor adopts imported oil-containing bearings, which is maintenance-free, high reliability, and has a long service life. The motor voltage, speed, power and other parameters can be changed according to the needs, and the generator can be made into a horizontal or vertical type. It can use spline shaft extension, double shaft extension, front end stop output, etc., and can be treated with three preventions.Permanent magnet wind turbines are electrical equipment that convert wind energy into mechanical work, which drives the rotor to rotate, and finally outputs alternating current. Wind turbines generally consist of wind turbines, generators (including devices), direction regulators (tail fins), towers, speed-limiting mechanisms, and energy storage devices. The working principle of the wind turbine is relatively simple. The wind wheel rotates under the action of the wind. It converts the kinetic energy of the wind into the mechanical energy of the wind wheel shaft. The generator rotates and generates electricity under the drive of the wind wheel shaft.

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.

The value of Enneng is Technology is how we do things. People are why we do things.

As a leading manufacturer of permanent magnet AC motors and generators, Enneng is committed to providing the best solutions for our customers while also prioritizing energy savings and low carbon emissions. We believe that it is our responsibility to contribute to a sustainable future by promoting energy-efficient solutions and reducing our carbon footprint.

Enneng Motor has been committed to the research and development of various permanent magnet AC motors that can directly drive equipment, usually low-speed, high-torque motors, optimized for mechanical equipment with reducer + motor drive in the transmission system. These motors usually have a durable design, high efficiency, and low noise level, and can provide customers with customized services from equipment transmission design to provide special sizes and rated power options to meet the needs of different applications, so as to achieve energy-saving performance.

Honors

Permanent magnet generators are suitable for small and low-head hydro sites and small and low-speed wind power generation. Our products are highly efficient and reliable, making it possible for more and more small-size hydro and wind power generation projects to become feasible.

Certifications

Our mission is to help our customers succeed by providing effective solutions. We believe that by providing high-quality permanent magnet generators, we can help our customers to successfully build sustainable and environmentally friendly energy systems. We invite you to join us in our mission to build a more sustainable world together.