1. Axial flow type/metal pressed axial flow type-widely used in low-head and large-flow rivers; 2. Francis-Francis turbine has a compact structure, high efficiency, and can adapt to a wide range of the head range, is one of the water turbine models widely used in countries all over the world. 3. Tubular type-the structure is similar to the axial flow type; 4. Inclined type-suitable for small power stations with medium and high water heads and small flow. The structure is compact and there is no draft tube, which can reduce the height of the plant and reduce the opening digging depth to reduce plant construction costs; 5. Pelton type -is used for higher water head and smaller flow, the impact type has a compact structure and no draft tube, which can reduce the height of the plant and reduce the depth of excavation to reduce the construction of the plant cost.
A water turbine is a hydraulic machine that converts water energy into mechanical energy. It is a device that uses a hydroelectric machine to drive a generator to convert rotating mechanical energy into electrical energy, which is called a hydropower generator set. According to the characteristics of water flow energy conversion, water turbines can be divided into: counterattack type and pelton type.
Permanent magnets have been used to provide the magnetic field in small to medium-sized generators for many years. The use of these in large renewable energy (RE)generators may offer performance advantages for future utility-scale generators.
The permanent magnet synchronizing variable frequency compressor is the most recent compressor with excellent quality and high efficiency and energy saving at present. It is an advanced technique owned by only a few advanced countries and zones in the world. It is a high-end tendency for future compressor development.
Rare earth Nd-Fe-B permanent magnet generator can save more than 15% more energy than ordinary generators.
With the motive to reduce the Energy cost in our Air Compressors, we now introduce Energy-saving Permanent Magnet Motors with our VFD models which decrease Energy consumption substantially to save even more energy as well as money. Enneng permanent magnet motor uses a motor with a temperature rise lower than 60K, ensuring the compressor has a longer life. The motor is made from rare earth permanent magnet material, which requires a low current due to its high magnetic strength and load torque during motor start-up and operation. The combined use of this motor and permanent magnet rotor achieves soft-start and electricity saving of up to 50%, with the motor's efficiency up to 10%-15% when compared with an asynchronous motor with the same specifications, thus avoiding a powerful mechanical impact on the compressor under the motor's full pressure start and ensuring a longer service life.
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