Microprocessor-Based Vector Control System for Induction Motor Drives with Rotor Time Constant Identification Function

A microprocessor-based high-performance vector control system for induction motor drives is discussed. In this system the high-performance current control method is employed, which can operate stably even when the saturation of a supplied voltage occurs. To estimate the rotor flux vector accurately, the powerful identification method of the rotor time constant is investigated, which does not require additional sensors for identification. This vector control system is developed by making use of a single high-speed 16-bit microprocessor (Intel 80186). Experimental results are presented.