Model-based design of a wave-feedforward control strategy in floating wind turbines

Floating wind turbines rely on feedback-only control strategies to mitigate the negative effects of wave excitation. Improved power generation and lower fatigue loads can be achieved by including information about incoming waves in the turbine controller. In this paper, a wave-feedforward control strategy is developed and implemented in a 10...

A control-oriented wave-excited linear model for offshore floating wind turbines

The design of control strategies for floating offshore wind turbines (FOWTs) is even more difficult than for onshore and bottom-fixed offshore ones and a recognized control strategy for FOWTs is currently lacking. In order to design effective control strategies, the additional dynamics of these systems should be taken into account in the...

Feedforward control for wave disturbance rejection on floating offshore wind turbines

Floating offshore wind turbines allow wind energy to be harvested in deep waters. However, additional dynamics and structural loads may result when the floating platform is being excited by wind and waves. In this work, the conventional wind turbine controller is complemented with a novel linear feedforward controller based on wave...

Effective Learning Environments in Relation to Different Learning Theories

There are diverse learning theories which explain learning processes which are discussed within this paper, through cognitive structure of learning process. Learning environments are usually described in terms of pedagogical philosophy, curriculum design and social climate. There have been only just a few studies about how physical environment...

An Analysis of a Historical Mansion that has Come Down to the Present Day from the Time of the Transformation of a City into a Neighborhood, and the Effects of this Transformation on the Mansion and City: The Kadirbeyzade Mansion in Old Gümü?hane

The city of Old Gümü?hane was founded on a sloping ground with rich silver mines in the Eastern Black Sea Region. Because of the loss of its socio-economic power in time, it moved to a valley of 1150 m altitude which is 4 kilometres away from its original place of foundation and which is close to the express way. In its place of foundation, the...

Controlling the Oosterschelde storm-surge barrier: A policy analysis of alternative strategies. Vol. 1: Summary report

The first in a four-volume study to assist the Netherlands government in a policy analysis of alternative control strategies for operating the storm-surge barrier across the Oosterschelde basin. For each alternative, the project analyzed several consequences or "impacts," including the safety of the dikes along the Oosterschelde; the effects on...

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