Long Lifespan Radial Flux AC Permanent Magnet Generator
Product Drawing
Technical Parameter
| Rated power | 12kW-3000kw |
| Rated speed | 300rpm |
| Rated voltage | 220VAC |
| Frequency | 60Hz |
| Numbers of Poles | 24 |
| Insulation Class: | H |
| Protection Class | IP54 IP55 |
| Efficiency | 93% |
| Cooling Method | Natural cooled |
| Ambient temperature | -25~45℃ |
| Recommended altitude | ≤ 1000m |
| Bearings | SKF Ball Bearings |
| Winding material | 100% Copper |
| Winding temperature level | 180℃ |
| Stator Impregnation type | Vacuum Pressure Impregnation (VPI) |
| Normal working temperature | 90℃ |
| Max working temperature | 130℃ |
| Installation | Horizontal |
Detailed Pictures
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.
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.
⑩ The parameters like voltage, speed, and power can be customized. The shape can be changed. Spline shaft, biaxial extension, and flange can be used.
Application
1. Permanent magnet generators provide the ideal solution for the Wind Industry.
By matching the power and speed of the generator to that of the wind turbine, the power system becomes more efficient. No gearboxes are needed, and the efficiency of the alternator exceeds 90%.
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.
4 Benefits of Permanent Magnet Generators
The situation of waning fossil fuel supply and the critical environment state are making it more and more necessary to find alternative energy sources. More and more people are choosing permanent magnetic generators to replace traditional generators in domestic applications. If you are still unfamiliar with permanent magnetic generators and their benefits, this article should call your attention.
Permanent Magnet Generators Benefit 1: Free Energy Source
Permanent magnet generators generate electricity with the inside magnets that can be used to power other electric devices, which means that you will no longer need to pay expensive electric bills. In addition, you can even sell your excess electricity to local utilities and get payment from them.
Permanent Magnet Generators Benefit 2: Reliable Energy Output
Compared to generators powered by other renewable and green energy, solar energy and wind power, for example, permanent magnetic generators are working independently of factors inside or outside of your house. You will no longer need to worry about the weather.
Permanent Magnet Generators Benefit 3: Low Installation Fee
A permanent magnet generator will not cost you a lot of money to install. You only need to buy everything necessary in a hardware store with little money and assemble one by yourself. With only hundreds of dollars, in one day, or less time, you can have your own permanent magnet generators at home.
Permanent Magnet Generators Benefit 4: Maintenance Free
Another great thing about permanent magnet generators is that you do not need to spend a lot of time and money on maintenance work. Just install it and wait there expecting it to make money for you!
Future of Permanent Magnet Generator
Based on current trends and advancements in technology, the future of permanent magnet generators looks promising. These generators are becoming increasingly popular in various industries, including wind and hydropower generation, due to their high efficiency, low maintenance, and reliability.
One of the significant advantages of permanent magnet generators is their ability to generate power at low speeds, making them ideal for use in low-wind areas and small-scale applications. They also have a more compact design, which reduces the overall weight and size of the generator, making it easier to install and transport.
With the growing demand for renewable energy sources, permanent magnet generators are likely to play a significant role in the future of energy production. As technology advances, these generators are expected to become more efficient, cost-effective, and versatile, making them suitable for a broader range of applications.
Overall, the future of permanent magnet generators looks bright, and they are likely to continue to be a popular choice for renewable energy production.
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Radial Flux Permanent Magnet Generator For Wind Turbine / Hydro Turbine Images
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