05:08
Faizan
Generating electricity from renewable sources of energy has been the need of the hour for many decades now. Many processes have contributed significantly in making the earth greener and reducing the cost of electricity usage, hydroelectric power generation is one such process. The old method of producing electricity involved the use of induction motors. But the use of a newer technology of permanent magnet generators has increased the number of benefits gained from this process. The hydroelectric generation is the most important renewable energy source in the world today, as it covers 20% of the entire production of electricity. Thus the intensification of hydro kinetic power will continue to rise, paying attention to the small fluctuations that have been disregarded up to now, to the extension of existing plants. Small plants, run-of-river and penstock, are those most invested in, as they present two relevant characteristics: low management costs and low environmental impact.
Permanent magnet generator:
These generators are based on permanent magnet radial flux technology. The generator structure provides good stability and higher efficiency. It is a new type of synchronous machine which is used for motor and general applications. Mechanically the motor is similar to induction motor, but the mechanism of generating flux is different.
Powerful permanent magnets create a constant flux in the air gap, thereby eliminating the need for rotor windings and brushes normally used for excitation in synchronous motor. The generator structure provides good performance and high efficiency. The phase voltage and current are purely sinusoidal, and torque ripple is low.
The generators are directly coupled to the hydraulic turbine (without multiplying gears, elimination of oil and loss of power) and the rotational speed is coordinated at each moment to the angle of attack of the impeller blades, according to the available head. Therefore the efficiency of the turbine remains very high in all conditions of water and tide flow. A permanent magnet generator is a perfect choice for hydropower turbine applications. They can be easily adapted to existing powerhouse buildings.
This system provides unique features and benefits:
Better efficiency (no mechanical drive losses)
Superior reliability (no gearbox, use of electronic components is minimum)
There is no need for lubrication system
More efficient use of space floor, versatile, can be designed for old buildings and structures
Less maintenance and reduced need for spare parts inventories
Hence the productivity increases and return on investment time decreases. This method starts giving profits early.
Permanent magnet generator:
These generators are based on permanent magnet radial flux technology. The generator structure provides good stability and higher efficiency. It is a new type of synchronous machine which is used for motor and general applications. Mechanically the motor is similar to induction motor, but the mechanism of generating flux is different.
Powerful permanent magnets create a constant flux in the air gap, thereby eliminating the need for rotor windings and brushes normally used for excitation in synchronous motor. The generator structure provides good performance and high efficiency. The phase voltage and current are purely sinusoidal, and torque ripple is low.
The generators are directly coupled to the hydraulic turbine (without multiplying gears, elimination of oil and loss of power) and the rotational speed is coordinated at each moment to the angle of attack of the impeller blades, according to the available head. Therefore the efficiency of the turbine remains very high in all conditions of water and tide flow. A permanent magnet generator is a perfect choice for hydropower turbine applications. They can be easily adapted to existing powerhouse buildings.
This system provides unique features and benefits:
Better efficiency (no mechanical drive losses)
Superior reliability (no gearbox, use of electronic components is minimum)
There is no need for lubrication system
More efficient use of space floor, versatile, can be designed for old buildings and structures
Less maintenance and reduced need for spare parts inventories
Hence the productivity increases and return on investment time decreases. This method starts giving profits early.
Posted in: business
