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An effective scheme of induction motor control without using stator sensor is proposed in this paper. The effective scheme consist of speed calculation algorithm and voltage/frequency control. The speed calculation algorithm is achieved by sensoring the current of stator and compared with the prospective speed then calculation by DSP. The principles of constant voltage/frequency (V/Hz) control for...
In this paper, a simple adaptive speed control for induction motor is described and implemented using dedicated Digital Signal Processor (DSP). The controller structure design is based on voltage/frequency (V/Hz) control scheme that transforms the three phase motor speed into voltage and generating input of sine wave of PWM. Using these voltage components, the AC induction motor can be handled in...
Basic PMSM-DTC drive controller consists of flux and torque hysteresis comparators and switching table. In the literature, three different designs have been reported. This paper investigates the three designs and compares their performance. The study aims to trace the reasons behind the recommendation of avoiding zero voltage states for PMSM- DTC reported in some studies. The system which avoids the...
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