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In comparison with the Stirling machine, the thermoelectric generator (TEG), based on the Seebeck effect, allows the direct transformation of thermal energy into electric energy. TEG has no moving parts and it does not pollute. Unfortunately, its performance is much under the Stirling machine's efficiency, the main disadvantage being the low voltage of TEG. An important feature of TEG usage in space...
The distribution of induced electric current in thin metallic shields with holes is determined by using the current sheet integral equation. A polyhedral surface with triangular elements is chosen to model the shield surface. The surface density of current is taken to be uniform over each element and is described by using specialized vector functions whose coefficients are scalar quantities associated...
A new method for solving the periodic steady state computation of circuits with nonlinear resistors and linear dynamic elements is presented. Any nonlinear resistor is replaced by equivalent sources controlled by its terminal voltages or currents. The convergence of this procedure is assured, unlike the cases of the harmonic balance and shooting methods. Its high convergence speed allows the fast...
A method for reconstruction of zero-thickness defects, buried deep under material surface, using pulse eddy currents, is proposed. Both an integral-FEM method for simulation of transient eddy-currents and genetic algorithms, as a model-free inversion technique, are proposed. Numerical results for the inversion of the eddy-currents signals, using genetic algorithms, are shown.
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