Patent ID: 9665672
Date: 2017-05-30
CPC Classifications: G06F

Claim:
1. In a fixed admittance matrix nodal method (FAMNM) inversion-free solver in a real-time simulator of an electric controlled switching circuit having FAMNM switching devices, a method for reducing spurious losses and oscillations/spikes inside the simulator, comprising the steps of: choosing a time interval T final and an iteration time interval T modelling each of said switching devices as a capacitor C when “off' and an inductor element L when ‘on’, each modelled switching device L and switching device C of L/C switching devices being subjected to controlled switching of their conduction-state; selecting a FAMNM conduction variable gs, precalculating a FAMNM admittance matrix A, and setting initial circuit states as well as ON/OFF states; and, further comprising the iteration steps of: iterating a circuit solution using said FAMNM and using a programmed computer means including a storage device for cross-initializing said L/C switching devices when they change their conduction state, to a state of current and voltage which are equivalent of a steady-state-condition current and steady-state-condition voltage respectively in each sampling cycle.