METHOD AND APPARATUS FOR MEASURING PARAMETERS OF MOTOR

A method and apparatus for measuring the parameters of a motor, which relate to a method and apparatus for measuring a single-phase or three-phase induction motor, and a method and apparatus for measuring an effective turn ratio of a single-phase induction motor. The method for measuring an effective turn ratio of a single-phase induction motor comprises: applying a first alternating-current voltage, which is within a certain range of a rated working frequency of a single-phase induction motor, to a first winding of the single-phase induction motor; calculating an equivalent inductance of the first winding according to the first alternating-current voltage, a first winding current amplitude of a first winding current flowing through the first winding, and a first phase angle; applying a second alternating-current voltage, which is within a certain range of the rated working frequency of the single-phase induction motor, to a second winding of the single-phase induction motor; calculating an equivalent inducta