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Simulating Dynamic Stall in a 2D VAWT: Modeling strategy, verification and validation with Particle Image Velocimetry data

Ferreira, C.J.S. (author), Bijl, H. (author), Van Bussel, G. (author), Van Kuik, G. (author)

journal article 2007

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Thermal design based on surface temperature mapping

de Jong, E.C.W. (author), Ferreira, J.A. (author), Bauer, P. (author)

journal article 2005

document

High density packaging of the passive components in an automotive DC/DC converter

Gerber, M. (author), Ferreira, J.A. (author), Hofsajer, I.W. (author), Seliger, N. (author)

journal article 2005

document

Converter concepts to increase the integration level

Popovic, J. (author), Ferreira, J.A. (author)

journal article 2005

document

Toward the Next Level of PCB Usage in Power Electronic Converters

De Jong, E.C.W. (author), Ferreira, B.J.A. (author), Bauer, P. (author)

A means for power electronics to exploit the level of 3-D packaging already being implemented in compact consumer products, such as digital cameras, is investigated in order to increase its power density. The increase in functionality and usage of printed circuit board (PCB) in power electronic converters is highlighted and improvements proposed...

journal article 2008

document

Operation of grid-connected DFIG under unbalanced grid voltage condition

Zhou, Y. (author), Bauer, P. (author), Ferreira, J.A. (author), Pierik, J. (author)

Doubly fed induction generator (DFIG) still shares a large part in today's wind power market. It provides the benefits of variable speed operation cost-effectively, and can control its active and reactive power independently. Crowbar protection is often adopted to protect the rotor-side voltage source converter (VSC) from transient overcurrent...

journal article 2009

document

Analytical modeling of a permanent-magnet synchronous machine in a flywheel

Holm, S.R. (author), Polinder, H. (author), Ferreira, J.A. (author)

journal article 2007

document

Dynamics of classical wave scattering by small obstacles

Bauer, G.E.W. (author), Ferreira, M.S. (author), Wapenaar, C.P.A. (author)

journal article 2001

document

Coupling of a CMOS Optical Sensor to a Micromachined Deformable Mirror with an Adaline Neural Method

De Lima Monteiro, D.W. (author), Ferreira, A.I. (author), Teixeira, F.B. (author), Melo, J.G.M. (author), Vdovin, G.V. (author)

We report on the preliminary results of an Adaline neural method for the coupling of a custom CMOS wavefront sensor to a micromachined adaptive mirror. The algorithm does not rely on a fixed basis matrix -as opposed to traditional methods-, offers excellent immunity to round-off errors and admits real-time input adaptability to speed up...

journal article 2006

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The electric variable transmission

Hoeijmakers, M.J. (author), Ferreira, J.A. (author)

journal article 2006

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Efficient gradient coil driver for MRI

Bauer, P. (author), Spanjaard, S. (author), Ferreira, J.A. (author), Hollander, M. (author)

journal article 2007

document

A high-density heat-sink-mounted inductor for automotive applications

Gerber, M. (author), Ferreira, J.A. (author), Hofsajer, I.W. (author), Seliger, N. (author)

journal article 2004

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Quantum ratchets with few bands below the barrier

Grifoni, M. (author), Ferreira, M.S. (author), Peguiron, J. (author), Majer, J.B. (author)

journal article 2002

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Electromagnetic energy propagation in power electronic converters: Toward future electromagnetic integration

Ferreira, J.A. (author), Van Wyk, J.D. (author)

journal article 2001

document

Common-mode DC-bus filter design for variable-speed drive system via transfer ratio measurements

Zhao, D. (author), Ferreira, J.A. (author), Roc'h, A. (author), Leferink, F. (author)

Filters used in electromagnetic interference suppression are often described in literature on drive systems and have become a standard solution in industry. The effect of the commercial off-the-shelf filter depends significantly on how it is installed. A model that includes the installation parameters is made first and then the parameters of the...

journal article 2009

document

Varying magnetization orientation for permanent-magnet volume reduction in machines

Dubois, M.R. (author), Polinder, H. (author), Ferreira, J.A. (author)

journal article 2003

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Contribution of permanent-magnet volume elements to no-load voltage in machines

Dubois, M.R. (author), Polinder, H. (author), Ferreira, J.A. (author)

journal article 2003

document

Energy Storage and Power Management for Typical 4Q-Load

Baalbergen, F. (author), Bauer, P. (author), Ferreira, J.A. (author)

Diesel generators in small electricity grids are mostly not used in a very efficient way. The reason for this is twofold. First of all, the efficiency of a diesel generator is dependent on the ratio determined by the average power divided by the peak power of the generator. The smaller this ratio is, the lower the efficiency. Furthermore, some...

journal article 2009

document

Design techniques for thermal management in switch mode converters

De Jong, E.C.W. (author), Ferreira, J.A. (author), Bauer, P. (author)

journal article 2006

document

Narrow-band pass filter array for integrated opto-electronic spectroscopy detectors to assess esophageal tissue

Ferreira, D.S. (author), Mirkovic, J. (author), Wolffenbuttel, R.F. (author), Correia, J.H. (author), Feld, M.S. (author), Minas, G. (author)

A strategy for spectroscopy tissue diagnosis using a small number of wavelengths is reported. The feasibility to accurately quantify tissue information using only 16 wavelengths is demonstrated with several wavelength reduction simulations of the existing esophageal data set. These results are an important step for the development of a...

journal article 2011