State-space thyristor computer model

The paper describes a general computer model for a power thyristor that will accurately simulate thyristorstatic and -dynamic characteristics. The state-space equations of the nonlinear model facilitate programmable and controllable gate characteristics, turn on and off time, reverse recovery characteristics, holding and latching current and dv/dt triggering effects. These properties, along with the model derivation, are presented and discussed in relation to a computer simulated impulsed-commutated d.c. chopper; the results of which are in excellent agreement with experimental results.