A general steady-state analysis program ANASP for thyristor circuits based on adjoint-network approach

Described is a new computer aided package program ANASP for computing the steady-state waveforms for any configuration of thyristor circuits. Newton-Raphson method is used to compute the initial state which generates the steady-state waveforms. For the efficient and accurate evaluation of the Jacobi an matrix the adjoint network is introduced into thyristor circuits containing power diodes and thyristors, and the method of sensitivity calculation is proposed. Using the program implemented, it is shown through examples that the computational time is considerably reduced to deter mine the steady state.