Induction motor equivalent circuit parameters determination from standard tests made with inverter supply

The authors obtain the induction motor equivalent circuit parameters starting from the standard tests (no-load and short circuit tests), supplying the motor by an inverter. In particular, square wave and PWM inverter supplies are considered and the proposed measurement method has been applied to 50 Hz standard induction motors and to 1 kHz induction motors utilized in high speed electrical spindles. The obtained results and the comparison with the standard tests results (supplying the motor by sinusoidal supply) are reported