INDUCTION MACHINE PARAMETER-IDENTIFICATION USING PWM INVERTER AT STANDSTILL

This paper presents a new approach to identify the induction machine p arameters using the PWM inverter. For the field oriented control of in duction machine, accurate induction machine parameters are necessary. Usually, the inverter utilizes the machine parameters supplied from th e manufacturer or estimated by extraneous tests. To overcome this prob lem, the proposed method utilizes the PWM inverter itself for machine parameter identification at standstill. All the test procedures are pe rformed and the parameters are identified by the PWM inverter and its own controlling computer. The proposed method has been implemented on actual inverter systems and thoroughly tested on two different inducti on machines to confirm its feasibility.