Effective numerical algorithms are worked out for solving the nolinear system of ODE for finding the static distributions of the magnetic flux in N-stacked JJs, as well as the corresponding matrix Sturm-Liouville problem for studying their global stability. The particular case of three stacked JJs is investigated. A correspondence is made between loss of stability of a possible static distribut...

Nonlinear and switchable metamaterials achieved by artificial structuring on the subwavelength scale have become a central topic in photonics research. Switching with only a few quanta of excitation per metamolecule, metamaterial's elementary building block, is the ultimate goal, achieving which will open new opportunities for energy efficient signal handling and quantum information processing....

Future applications of mag­ netic thin films to computer circuitry will require the use of integrated deposited circuitry, which involves depositing mag­ netic films and associated electrical circuitry on the same substrate. It is verified that the extremely close coupling between a magnetic film and a surrounding deposited loop in this configuration results in 100% flux linkage with the loop. ...

The hybrid excitation flux switching permanent magnet (HEFSPM) motor with magneticbridge is a topology of flux-switching PM machines. Despite its excellent performancesuch as high torque/ power density, enhancing/ weakening capability and so on, it has receivedless attention due to complicated structure. Therefore, optimal design performance all need tobe further investigated. This paper presen...

Induction and synchronous machines have traditionally been the first choice of automotive manufacturers for electric/hybrid vehicles. However, these conventional machines are not able anymore to meet the increasing demands for a higher energy density due to space limitation in cars. Fluxswitching PM (FSPM) machines with their high energy density are very suitable to answer this demand. In this ...

Due to double salient structure, Flux Switching Machines (FSMs) are preferred for brushless AC high speed applications. Permanent Magnet (PM) FSMs (PM-FSMs) suited applicants where torque density (Tden) and power (Pden) the utmost requisite. However conventional PM-FSMs utilizes excessive rare earth PM volume VPM, higher cogging Tcog, ripples (Trip) comparatively lower Pden due flux leakage. To...

This paper deals with the direct torque control (DTC) of the induction motor. This type of control allows decoupling control between the flux and the torque without the need for a transformation of coordinates. However, as with other hysteresisbased systems, the classical DTC scheme represents a high ripple, in both the electromagnetic torque and the stator flux and a distortion in the stator c...

Conventional high-speed flux-switching machines have either a high fundamental frequency or more even harmonics. This paper proposes novel six-slot four-pole axial permanent magnet machine for applications. The machine, consisting of two radially distributed stators and one rotor, can effectively eliminate harmonics in the flux linkage. First, structural parameters that affect performance motor...