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Enneng 200kw 250rpm 400V 50HZ Low Noise Permanent Magnet Generator
Product Drawing
Technical Parameter
| No. | Parameter | Units | Data |
| 1 | Rated output power | KW | 200 |
| 2 | Rated speed | RPM | 250 |
| 3 | Rated output voltage | VAC | 400 |
| 4 | Rated current | A | 290 |
| 5 | frequency | Hz | 50 |
| 6 | Efficiency at rated speed | ＞94.6% | |
| 7 | Winding type | Y | |
| 8 | Insulation resistance | 20 MΩ | |
| 9 | Insulation | class | H |
| 10 | Rated torque | Nm | 7680 |
| 11 | Start torque | Nm | ＜100 |
| 12 | Temperature rise | °C | 90 |
| 13 | Max working temperature | °C | 130 |
| 14 | Generator diameter | mm | See the drawing |
| 15 | Shaft diameter | mm | See the drawing |
| 16 | Housing material | Cast iron | |
| 17 | Shaft material | High quality carbon steel | |
| 18 | Bearing | SKF | |
| 19 | Weight | Kg | 1660 |
| 20 | Design lifetime | Year | 20 |
Detailed Pictures
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 and advantages of permanent magnet wind turbine generator:
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 a power frequency of 50HZ at low speed. With the grid-connected inverter, the turbine can be released. In the dry season, the generator set runs at a 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 have 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 converts 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.
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.
1. Free Energy Source
Permanent magnet generators produce electricity using their own magnetism. So, you do not need to pay high electric bills, and a large budget is saved. Besides, these devices do not need any other resources, which are quite environmentally friendly.
2. Reliable Power Output
Permanent magnet generators do not need any special operating environments. Hence, they can offer reliable performance compared with wind turbine motors. Additionally, permanent magnet generators do not suffer from energy loss, while induction generators typically lose 20-30% of energy. Additionally, there are no temperature rises in the magnetic machines, so the life of the bearings can be prolonged.
3. Low Maintenance Fee
Due to the features mentioned above, you do not need to spend lots of money and time on the maintenance of permanent magnet generators. And they do not have slip rings and brushes, which are supposed to be checked at regular intervals.
4. Compatibility
Permanent magnet generators can be employed with turbines and hydro turbines.
