Vorlesung Mechanical Aspects of Wind Energy

Learning Outcomes: • The students should be able - to design different wind turbine components - to compute the rotor-blade aerodynamics and determine the optimum blade setting angles for design mean flow speed - to compute the forces and performance curves for the wind turbine - to determine the basic wind turbine dimensions - to compare different design concepts for power delivery systems - to design the different gear boxes and mechanical drives in the machine house - to understand the safety and braking systems needed in the machine house - to design the different tracking mechanisms - to compute the different aerodynamic, structural and dynamic loads on the wind turbine blades and tower - to estimate the extra loads from the mechanical systems connected to the wind turbine - to distinguish between the different materials used to construct the rotor blades - to design rotor blades using different available materials and technology - to distinguish and know about the different types of towers and support used for wind turbines - to make a preliminary design for a tubular, concrete or lattice tower and suitable foundation - to understand the different legislation requirements and transportation facilities needed to build and operate a wind turbine/farm - to plan for a new wind farm and to develop a Gannt chart to define when the different design, construction, testing and operation will commence - to understand the different safety measures and necessary scheduled maintenance for wind turbines - to take appropriate steps to apply for wind farm certification. • The students should be able - to understand and know the different WEC devices and functions - to describe the different components of WECS - to calculate the blade setting and obtain the performance curves - to match the turbine to a suitable generator - to describe the suitable drive train - to understand the different problems related with grid integration - to understand and know the different types of grids - to understand schemes for control of the grid - to design wind turbine control concepts for island, grid and interconnected operation - to design the control systems for the plant operation. • S. Heier and R. Waddington, Grid Integration of Wind Energy Conversion Systems, Wiley-Blackwell, 2nd edition, 2006. • E. Hau and H. von Renouard, Wind Turbines: Fundamentals, Technologies, Application, Economics, Springer; 2nd edition, 2005. Bemerkung Media: Black board and beamer, power point presentations. Leistungsnachweis written exam, home work Lerninhalte • Mechanical drive train and machine house: comparison of different design concepts, blade adjustment system, rotor brake, step up gears, generator coupling, tracking of wind direction, machine house design, aesthetic criteria; loads and structural demands: static aerodynamic and structural loads on blades and towers, dynamic loads on blades and towers, modelling to calculate the loads and structural demands, mechanical components and control system loads; rotor blades in composite construction: materials, composite material construction, rotor blade construction, rotor blade connection to the hub; towers and foundation: design and varieties, steel tube towers, concrete tower, lattice tower, foundation; planning, installation and operation: project planning, legislations for land and environmental operation, transport facilitations for wind farm, plant erection, testing and operation, safety aspects, service and maintenance; certification of wind power plants; field excursion to German wind farm sites. • Construction and functional structures of WEC; main components of wind energy converters: rotor blade with pitch drive, input torque, generator, mechanical drive train; grid integration: different electrical networks, grid influences, grid control; control concepts and operational results: island grid operation of WECs, grid operation, interconnection operation; control system design and plant simulation: plant components characteristics, development of mathematical models for control and simulation, dimensioning of the controllers. FB 16 Elektrotechnik / Informatik written exam, home work Uni Kassel SoSe 2015 Lehrveranstaltungspool FB 16 Prof. Seifert Henry