Definitions of Important Terms Related to Wind Power Station Pitch angle : Angle between the direction of wind and direction perpendicular to the planes of blades. Pitch control : Control of pitch angle by turning blades. DEO Speed of the rotor tip Tip speed ratio = Speed of the ratio tip / Speed of the … Read more

Comparison of Different Generator Wind Power Generation Plant Squirrel Cage Induction Generator (SCIG). Doubly Fed Induction Generator (DFIG). Wound Rotor Synchronous Generator (WRSG). Permanent Magnet Synchronous Generator (PMSG). Point of Comparison SCIG DFIG WRSG PMSG 1. Cost Lower Medium High Higher 2. Size Robust Compact Medium Large 3. Construction Simple Simple Simple Complex 4. Active/Reactive … Read more

Permanent Magnet Synchronous Generator (PMSG) in Wind Power Plant • This is also a variable speed generator. • This type of synchronous generator is shown in the following block diagram of wind power plant. Main components of Permanent Magnet Synchronous Generator : Blade and turbine rotor assembly. Permanent magnet synchronous generator. Power converting unit rectifier and inverter. … Read more

Wound Rotor Synchronous Generation (WRSG) This is a variable speed generator. Main Components of Wound Rotor Synchronous Generation (WRSG) in Wind Power Plant Blades and wind turbine Wound rotor synchronous generator Exciter Rectifier (Generator side control) Inverter (Grid Side control) 3-ph step-up transformer Output to grid system D.C. link Rectifier-Capacitor-Inverter unit is a back-to-back power converter … Read more

Wound Rotor Induction Generator (WRIG) in Wind Power Plant It is also a constant speed generator.Main Components of Wound Rotor Induction Generator (WRIG) in Wind Power Plant Blades turbine rotor unit Gear box Wound rotor induction generator Variable resistance Reactive power compensating capacitor bank 3-phase transformer To grid system tower. Wind energy rotates the rotor of turbine. … Read more

Doubly Fed Induction Generator (DFIG) in Wind Power Plant Main components of wind power conversion to electric power : Blades and turbine rotor Gear box Induction generator Rectifier / Inverter unit (DC transmission link) Energy conversion system with D.C. link is shown above Wind energy received by blades rotates the turbine shaft and through gear box … Read more

Types of Radioactive Waste Generated in a Nuclear Power Station and Methods Employed for their Disposal Q. State the types of radioactive waste generated in a nuclear power station. Explain the methods employed for their disposal. Low level waste disposal : The low level waste comprises of papers, tools, clothing, filter through a special processing, … Read more

Salient Features of Electric Generators Used in Large Wind Power Plants Various generators are used to suit the particular type of wind plant.Generators are driven by rotor of turbine which is directly connected to the generator shaft. Squirrel cage Induction generator (SCIG) is very simple in construction. It is connected through gear box to turbine. … Read more

Squirrel Cage Induction Generator (SCIG) Connected In Power Plant This generator is simple in construction and coupled to the turbine through gear box. It is a constant speed generator. Power control : Aerodynamically by pitch yaw and small active control. To compensate reactive power, capacitor bank is connected to cross-lines. This increases active power and … Read more