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FIELD ORIENTED CONTROL SYSTEM FOR INDUCTION MACHINE WITHOUT SPEED SENSOR
TAKAYOSHI NAKANO,KIYOAKI SASAGAWA,MAKOTO HASHII 전력전자학회 1989 ICPE(ISPE)논문집 Vol.- No.-
A variable speed drive system by the field oriented control method without a speed sensor is described. In this system, the speed actual value is estimated from the position of the flux vector calculated from the terminal voltage and current.<br/> The control system is apllied to a 165 kW induction motor drive and a GTO PWM inverter, and tested. The error of the speed control is within ± 0.5 % for a speed control range of 1 : 20. The indicial response of speed control is about 15 rad/sec.<br/> Also, subjects for future are described.<br/>