Assessment of static BH characteristics of electrical sheets using a dc measuring set-up

Dynamic Relaxation in the Iterative Methods for Solving Nonlinear Three-Phase Circuits

“…In the present situation, because the derivative Γ(s) is easier to calculate in the time domain. Dynamic overrelaxation was calculated on harmonics to solve electromagnetic field problems in nonlinear media [5][6][7][8][9][10][11]. In the numerical examples, acceleration was applied only on the fundamental, a larger number of harmonics implying a very high computational effort.…”

“…A method successfully used for solving electrotechnical problems with nonlinearities is the iterative solution based on the Picard Banach procedure -the Hănțilă method [4][5][6][7][8][9][10][11]. The method [4] was successfully developed for solving resistive circuits containing non-linear elements in a periodic regime, both in the frequency and time domains [12][13][14][15].…”

“…It also allowed the solution of three-phase circuits with non-linear elements, controlled switching (thyristors), or different sequence reactances. It presents several advantages [17,8]: the convergence is certain, the possibility of solving on a single phase, the easy highlight of the power transfer on harmonics, and the option to mitigate the Gibbs phenomenon.…”

“…The case of the diode with piecewise linearized characteristics was analyzed theoretically without presenting numerical examples. The dynamic overrelaxation procedure has already been developed to solve field problems in nonlinear media using the Hănțilă method [7][8][9][10][11].…”