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We investigate the behavior of resonant-induced harmonics from tin using driving lasers with tunable wavelengths. The intensity of the resonant harmonic is suppressed by the tuning laser wavelength around 1.8μm to understand the interaction dynamics of continuum electron with the autoionizing states.
Carbon molecules are used to generate intense high-order harmonics using driving lasers with 0.8 μm–1.71 μm wavelengths. By driving plasma of reduced size (∼200μm) with 1.71μm laser, we could extend the cutoff to ∼70eV, while reducing the peak intensity by only ∼31%.
The permanent magnet synchronous machine with an external rotor is the most important device for high-performance electrical drive systems in particular for hybrid electric vehicles. The paper presents finite element analyses of a such a machine in terms of a comparison of both Y- and Δ-connected stator windings. Thereby, the unknown zero sequence current with the Δ-connected stator winding has to...
The permanent magnet synchronous machine with an external rotor is the most important device for high performance electrical drive systems in particular for hybrid electric vehicles. The paper discusses finite element analyses of such a machine with concentrated tooth coils in terms of a comparison of both Y- and Δ-connected stator windings. As the evolved electromagnetic torque is one of the most...
The reliability of the loss calculation is a very important issue during the electrical design phase of large synchronous generators. The paper presents a fully 3D finite element approach for the computation of eddy current losses in the stator clamping parts of a 450 MVA hydro generator. To take into account for saliency and saturation effects, the analyses utilize the fundamental harmonic wave as...
The reliability of the loss calculation is a very important issue during the electrical design phase of hydro generators. Therefore, the accurate calculation of eddy currents in the stator clamping system is a matter of particular interest with initial design and design optimization. Due to the nonlinear magnetic behaviour of the clamping plate, the eddy current losses in these regions can reach high...
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