DC brushless motors are widely adopted for their simplicity of control, even in sensorless configuration, and their high torque\r\ndensity. On the other hand, induction motors are very economical due to the absence of permanent magnets; for the same reason\r\nthey can easily be driven in the flux-weakening region to attain a wide speed range. Nevertheless, high dynamic induction motors\r\ndrives, based on field-oriented (FOC) or predictive control, require large amounts of computing power and are rather sensitive to\r\nmotor parameter variations. This paper presents a simple DTC induction motor control algorithm based on a well-known BLDC\r\ncontrol technique, which allows to realize a high dynamic induction motor speed control with wide speed range. The firmware\r\nimplementation is very compact and occupies a low amount of program memory, comparable to volt-per-Hertz- (V/f-) based\r\ncontrol algorithms. The novel control algorithm presents also good performance and low current ripple and can be implemented\r\non a low-cost motion control DSP without resorting to high-frequency PWM.
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