Steady state performance and electrical stability analysis of matrix converter fed induction motor drive under Volt/Hertz control

A new generalized model for stability analysis based on a small signal modeling is proposed, for matrix converter fed induction motor drive system. This approach considers the analysis when the drive system operates at unity as well as non-unity input power factor at the source side. With the help of this model, different factors which affect the matrix converter stability are analyzed including stator and rotor resistance variation due to motor heating and the impact of non-zero reactive power at the source side. The paper also presents a complete and a general steady state analysis in the q-d synchronous reference frame when the whole drive system operates under a constant Volt/Hertz operation. Computer simulations are carried out to verify theoretical analysis on stability as well as on the steady state performance characteristics.