Showing papers by "Michele Pastorelli published in 2009"
TL;DR: In this paper, the flux-current relationship of interior permanent magnet motors is analyzed, and a simplified but effective model of the cross-saturation phenomenon is proposed and verified by experiment, and new flux variables are introduced that allow a rigorous splitting of permanent magnet and reluctance torques.
Abstract: Modern interior permanent magnet motors, suited to large constant-power speed ranges, have a multiple flux-barrier rotor structure and show a quite complex magnetic behavior. In this paper, the flux-current relationship of such motors is analyzed, and a simplified but effective model of the cross-saturation phenomenon is proposed and verified by experiment. In addition, new flux variables are introduced that allow a rigorous splitting of permanent-magnet (PM) and reluctance torques. It is shown that the PM contribution to torque is larger than expected from the PM no-load flux. This can lead to more accurate machine design and control strategies.
85 citations
09 Jun 2009
TL;DR: In this paper, a gyroscopic wave energy converter is studied and a procedure to design a prototype model to be tested at the wave tank at the University of Edinburgh is outlined.
Abstract: The extraction of energy from ocean waves has been investigated in Europe since the 1970s. Hundreds of devices have been proposed, many have been tested in some form or other and a few of these have been commercialized. In this paper a gyroscopic wave energy converter is studied and a procedure to design a prototype model to be tested at the wave tank at the University of Edinburgh is outlined. A linearized model of the device is extrapolated and used as a mathematical tool in the design process. The final version of the prototype model is verified using the complete nonlinear model.
34 citations