Product Details
Place of Origin: China
Brand Name: ENNENG
Certification: CE
Model Number: PMG
Payment & Shipping Terms
Minimum Order Quantity: 1
Price: USD 1000-5000/set
Packaging Details: seaworthy packing
Delivery Time: 15-120 days
Payment Terms: L/C, T/T
Supply Ability: 20000 sets/year
Name: |
Low Rpm Waterproof Three Phase Ac Permanent Magnet Generators |
Current Type: |
AC |
Power Range: |
5-2000kw |
Protection Grade: |
IP54 IP55 |
Bearing Brand: |
SKF |
Cooling Method: |
Natural Cooled |
Winding Material: |
100% Copper |
Rated Voltage: |
400v |
Application: |
Wind Turbine, Hydro Turbine |
Installation: |
IMB3 IMB5 IMB35 |
Name: |
Low Rpm Waterproof Three Phase Ac Permanent Magnet Generators |
Current Type: |
AC |
Power Range: |
5-2000kw |
Protection Grade: |
IP54 IP55 |
Bearing Brand: |
SKF |
Cooling Method: |
Natural Cooled |
Winding Material: |
100% Copper |
Rated Voltage: |
400v |
Application: |
Wind Turbine, Hydro Turbine |
Installation: |
IMB3 IMB5 IMB35 |
Low Rpm High-Frequency High Output Magnetic Field Permanent Magnet Generators
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
Permanent magnet generators are devices that convert mechanical movements to electricity using their own magnetic fields. It’s a type of electric motor that uses permanent magnets rather than windings on its field. These devices are commonly used in wind turbines, steam turbines, gas turbines, and engines to create electrical power. They consist of two main components: a rotor with powerful magnets and a stator with copper coils. The rotor is made from permanent magnets, and it can generate magnetic fields. Magnetic parts are set around the stators as well, so fluxes could compass them. The stator is composed of rotating coils. Once receiving the magnetic power, the stator generates electricity consequently. In this way, the movement of the rotors is transformed into electric energy. The more stator coils we have, the more electric currents we get.
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.
Disadvantages
While permanent magnet generators offer several benefits, they also have limitations that need to be considered. One significant drawback is their relatively low power output compared to conventional generators. Magnetic generators are best suited for small-scale applications such as powering individual homes or specific appliances.
Moreover, the initial cost of installing a magnetic generator can be higher than setting up traditional power sources. However, it is worth noting that over time, the operational costs of a magnetic generator can be significantly lower due to the absence of fuel expenses.Another consideration is the availability of suitable motion sources for continuous rotation of the rotor in magnetic generators. In some areas, finding consistent wind or water flow may pose challenges, limiting the feasibility of using these devices as primary power sources.
In conclusion, while magnetic generators offer numerous advantages such as sustainability and efficiency, they are not without limitations. When comparing them to traditional power sources like fossil fuels and renewable energy options such as solar and wind power, it becomes clear that magnetic generators excel in certain areas but may not be suitable for all applications. As technology continues to advance and overcome existing limitations, magnetic generators hold great promise for a greener future in energy production.
- Wind turbines - Very popular choice for both horizontal and vertical axis wind turbines due to their high power density, efficiency, and ability to generate electricity at varying wind speeds.
- Hydropower - Used in micro-hydropower schemes and tidal power installations to convert kinetic energy of running water into electricity. Their robust underwater design makes them suitable.
- Wave power - Permanent magnet generators are integrated into wave energy converters to generate power from ocean wave motion without added complexity.
- Solar photovoltaic systems - Used in off-grid and battery-based solar setups to charge batteries from excess solar panel power during daylight hours.
- Hybrid diesel-solar/wind systems - Provide generator backups and allow integrating renewables into existing diesel grids more easily.
- Rural electrification projects - Their simple, reliable design has made PMGs popular for powering remote villages, telecom towers and irrigation pumps.
- Uninterruptible power supplies - Provide battery backup power to critical loads using renewable sources like fuel cells or micro-hydro.