FATRONIK technological centre has designed and installed a micro-wind generator at the Aubixa Euskal Girotze boarding centre (San Pedro neighbourhood, Elgoibar). Since the end of October the 2.5 kW micro-wind generator has been producing energy which is initially planned to power the boarding centre’s four refrigerators, the control room, the data-reception sensors and the PCs. Moreover, four 120 kW photovoltaic plates have been incorporated into the micro-wind generator, thus generating a hybrid system which takes maximum advantage of renewable resources such as the sun and the wind.
The triple-bladed wind generator rotor was designed by the Australian company Bolwell Corporation. Each vane is 2.1m long with an aerodynamic profile chosen for working with low Reynolds values – they have a variable angle of torsion running from the base to the tip. In this way, the angle of attack of the wind with respect to the vane is kept constant all along its length. The rotor is directly coupled to a multipolar electric generator consisting of permanent magnets (PMG) with no intermediate multiplier. The current generated is alternating and with variable voltage and frequency. This current goes to a number of batteries after passing through a voltage regulator which converts the alternating current to direct and eliminates the surplus voltage. Finally, the current is converted into one at 220V with a current inverter, thus adapting the voltage for customary usage.
The wind generator starts to rotate at wind speeds of 3.5m/s and reaches maximum power at 9.5m/s. If the wind exceeds a velocity of 16m/s the passive power control system (side furling) of the wind generator comes automatically into operation: this control system is achieved through an articulated assembly between passive power regulation system and the body of the wind generator which is situated eccentrically to the axis of the wind generator’s truss tower. Thanks to this braking mechanism for the rotor, both the electric surge infrastructure and the mechanical components are protected against excessive centrifugal forces.
Garazi Andonegi | Basque research
Electrical fields drive nano-machines a 100,000 times faster than previous methods
19.01.2018 | Technische Universität München
ISFH-CalTeC is “designated test centre” for the confirmation of solar cell world records
16.01.2018 | Institut für Solarenergieforschung GmbH
On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.
We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...
What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.
Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...
At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...
Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.
Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...
08.01.2018 | Event News
11.12.2017 | Event News
08.12.2017 | Event News
19.01.2018 | Materials Sciences
19.01.2018 | Health and Medicine
19.01.2018 | Physics and Astronomy