ACCELERATION OF SIMULATION OF ELECTRICAL CIRCUITS VIA SUBSTITUTIONS IN MATRIX BY VECTOR MULTIPLICATIONS
Method of acceleration of simulation of electrical circuits which equations are written in table form and are being solved by Conjugate Gradient Method is proposed. Idea of the proposed acceleration method is close to Nodal Voltages Method. It is based on possibility of calculation some components of solution via other components. It differs from classical algorithms because matrix of the system of equations in fact is not calculated and is not stored in computer memory. That allows to save computation time and memory. Besides that, a variant of the method for circuits with magnet coupling is proposed, and it also differs from the classical method. Comparing of program «Electroscope» that uses the above mentioned algorithm, with Russian program «Fastmean» and American program «PSIM»is presented. The comparing is made on two variants for two test circuits. In all cases the fastest program is «Electroscope» with EMF sources reduction. It is critically important that «Electroscope» produces simulation results without rough defects. «PSIM» and «Fastmean» show considerable false overvoltages of the diodes.