Design of a Ground Station for a Soft Wing Airborne
Il y a 5 mois
Flying wind turbines are a class of systems for producing renewable energy from wind. However, unlike windn turbines, they also use wind to stay aloft, hence their name [1]. These systems are in the phase of ongoing research and first commercialization [2]. According to a recent white paper for Airborne Wind Europe, flying wind turbines are ”a revolutionary solution to access the vast untapped potential of wind resources at heights greater than those accessed by established wind technologies” [3]. Indeed, the absence of a mast makes it easier to capture high altitude winds (300 to 600 m) which are more regular, more powerful and more stable. [4]. Because they sometimes require up to 90 % fewer materials compared to wind turbines, these systems can be at least 40 % lower in carbon intensity [3]. To the extent that i) the European Union has set itself a target of 1000 GW of wind production capacity in 2050 [5] and ii) the intensive use of steel, cement and composite materials harms to the carbon footprint of wind turbines and risks slowing down the achievement of these objectives [6], the solution of flying wind turbines seems essential in the current context of the energy transition. The operation of ground generation systems (ground gen) is as follows: in a first phase, the sail is pushed by the wind, and follows a figure-of-eight trajectory to maximize its speed, and therefore the force of traction exerted on the cable. By unwinding the cable, the sail drives a generator fixed to the ground, which produces electricity.
When the cable is completely unwound, we enter the second phase, the kite is piloted so as to exert a minimum tension and the generator operates as a motor to wind the cable again. The cycle can then start again [1, 8]. For example, Kite Power’s ”Falcon” system produces 130 kW during the first phase (80% of the time) and consumes 20 kW during the second (20% of the time), i.e. an average production 100 kW [2]. These systems suffer from a major disadvantage: they are much more difficult to control. Some systems are already in the first commercialization phase, but the installed control laws may lack robustness in the face of the great diversity of operating conditions [8]. Therefore, further research is needed. In particular, there are no open source pilot station plans yet, a real lack for research on these systems. The objective of this internship is to design a communicating, robust, energy-efficient kite piloting station with numerous sensors in order to acquire experimental data. This will make it possible to validate models and formalize the control problem before being able to design new control laws for these systems. The design will be shared as open source and will facilitate theoretical developments in other universities and companies.
This internship follows an internship on the design of a sensor box for sailing.
**Job Types**: Full-time, Internship
Contract length: 5 months
Pay: 600.00€ - 630.00€ per month
**Education**:
- Bachelor's (required)
**Language**:
- english (preferred)
Work Location: In person
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