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Electromagnetic launch systems for civil aircraft assisted take-off

Bertola L., Cox T., Wheeler P., Garvey S., Morvan H.

Archives of Electrical Engineering

2015

Vol. 64, nr 4

535--546

This paper considers the feasibility of different technologies for an electromagnetic launcher to assist civil aircraft take-off. This method is investigated to reduce the power required from the engines during initial acceleration. Assisted launch has the potential of reducing the required runway length, reducing noise near airports and improving overall aircraft efficiency through reducing engine thrust requirements. The research compares two possible linear motor topologies which may be efficaciously used for this application. The comparison is made on results from both analytical and finite element analysis (FEA).

Sensorless Control of Surface Mounted Permanent Magnet Synchronous Motors Using Matrix Converters

Saltiveri D., Arias A., Asher G., Sumner M., Wheeler P., Empringham L., Silva C.

Electrical Power Quality and Utilisation. Journal

2006

Vol. 12, nr 1

59-67

This paper investigates the influence of the power converter on the performance of Surface Mounted Permanent Magnet Synchronous Motor drives, which employ High Frequency voltage injection to achieve low and zero speed control. Experimental results demonstrate the remarkable performance of the sensor less speed and position control employing the Matrix Converter and the contributions of the Space Modulation Profiling technique. The Matrix Converter has almost zero dead time, which means that behaves almost like an ideal power converter and achieves better results than the conventional Voltage Source Inverter. A comparison of the sensor less technique proposed using both converters is made.