Patent ID: 8676524
Filing Date: 2014-03-18
Classification: H02P

Abstract:
1. A system for computing machine parameters of an induction machine, comprising: a relation providing module operable to provide a relationship between slip rates and primary side resistances of the induction machine and a relationship between the slip rates and primary side reactances of the induction machine wherein each of the slip rates is a ratio of a difference between a synchronous speed of the induction machine and a rotor speed of the induction machine at a corresponding point of time to the synchronous speed; and a circuit parameter computing module coupled to said relation providing module and operable to perform a parameter computing process that includes the steps of wherein said circuit parameter computing module outputs the set of initial values of the equivalent circuit parameters as estimated circuit parameters of the induction machine when the cumulative resistance error and the cumulative reactance error are smaller than the first and second error thresholds, respectively.