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FOC of 3-phase induction motors with MCU

Posted: 24 Mar 2014 ?? ?Print Version ?Bookmark and Share

Keywords:AC induction motor? TMS320F2803x? microcontrollers? C2000? field orientated control?

This application report demonstrates a solution to control an AC induction motor using the TMS320F2803x microcontrollers. TMS320F2803x devices are part of the family of C2000 microcontrollers which enable cost-effective design of intelligent controllers for three phase motors by reducing the system components and increase efficiency. With these devices it is possible to realise far more precise digital vector control algorithms like the field orientated control (FOC). This algorithm's implementation is discussed in this document. The FOC algorithm maintains efficiency in a wide range of speeds and takes into consideration torque changes with transient phases by processing a dynamic model of the motor. Among the solutions proposed are ways to eliminate the phase current sensors and use an observer for speed sensorless control.

View the PDF document for more information.

Originally published by Texas Instruments at as "Sensorless Field Oriented Control of 3-Phase Induction Motors".

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