Problems With Turbines - Problems With Turbines The main...

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Problems With Turbines. The main disadvantages are the turbines are cavitation and runaway. Cavitación.- when a liquid is subjected to a pressure greater than the pressure of the evaporation, the liquid evaporates forming small vapor bubbles to burst cause severe damage to the impellers. -Embalamiento. occurs when a drastic variation in the load on the turbine shaft, the turbine can assume a rate that damage the turbine components destroy reaching this speed depends on the conditions of each installation. 1.14 Generators. These rotary machines which convert mechanical rotation energy turbines supplying electrical energy, in its terminals or terminals. They can be of two types: 1.14.1 síncronos.- generators in the rotor generated by the action of an external DC power to rotate the rotor and a rotary field is produced in the stator coils, in turn producing electrical energy at the terminals of these coils . Synchronous generators are divided into: By type of excitation Auto excited External excitation For rotor type Salient poles Smooth poles
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Synchronous generators are often used in plants with over 2,000 kVA connected to the network, or small power plants operating in island (without being connected to the network). Figuras1.7. Picture of the stator and rotor of a synchronous generator Asíncrono.-Generator 1.14.2 The asynchronous generator, however, must always be connected to the grid, which takes the energy required to produce their magnetization. It is common in
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