Steady state analysis and dynamic response of a current source inverter fed induction motor

The apparent anomaly in the behaviour of a soft and hard current source inverter fed induction machines is discussed and resolved. A relatively simple method is used to consider the effect of saturation of the main magnetising circuit. The small displacement state space model of a current source inverter fed induction machine is developed. The study of the dynamics shows that the region of instability is influenced by the variation of machine parameters. Various transfer functions are derived.