Electromagnetics & Electric Machines

QinetiQ North America Technology Solutions Group is experienced in analysis, design, Electromagnetics & Electric Machines Research & Development - QinetiQ North Americaconstruction, and control of many different types of electromagnetics and electric machines. Our projects have run the gamut from tiny custom voice coil actuators powered by AA batteries, to self-excited induction generators, to enormous linear induction motors used to launch jet fighters from aircraft carriers. We produced one of the winning maglev concepts in the early 1990s, and further research in this area led to our design of a “maglifter,” system to launch rockets into outer space.

  • Finite Element Analysis – We perform finite element modeling of electromagnetic devices and electric machines. In addition to working with existing commercial codes, we create new programs that address novel situations that are not well represented by existing codes. We are also skilled in creating semi-analytical models of magnetic devices that allow the results from finite element analysis to be incorporated into more streamlined forms that are suitable for dynamic simulation and controller design.

  • Linear Motors -- Over the past decade, we have successfully completed millions of dollars of research involving the analysis, design, construction, and control of large prototype linear motors. These motors are generally intended for high-speed, high-performance applications such as launching or arresting aircraft. In the launching and arresting applications wherethe motor must supply a very high transient force and be carefully controlled so that the trajectory of the aircraft closely tracks a predetermined position/velocity profile.

  • Servo Controls – Many of our electric machine applications require closed-loop control to achieve high performance specifications. We have produced a number of control systems for linear motors. For example, our Advanced Linear Motor (ALM) prototype hardware successfully demonstrated accurate closed-loop tracking of a commanded position trajectory that peaked at approximately 140 mph over a 42-foot run out.

For more information, please email TSGinfo@QinetiQ-NA.com