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PMSM sensorless FOC for a fan using Kinetis KV10

Posted: 16 Jul 2014     Print Version  Bookmark and Share

Keywords:sensorless  PMSM  field-oriented control  anti-wind function  fan propeller 

This application note discusses a sensorless PMSM field-oriented control design. The original application is now enhanced to include an anti-wind function, which handles the specific start-up condition when the fan propeller is forced into rotation by the wind. The presented solution recognises neither the speed nor the direction of the forced rotation. The moving rotor is gently stopped, then the initial rotor position is detected and the rotor starts to spin without alignment.

This application note describes the algorithms to brake the moving rotor and detect the initial rotor position, the software modifications, the MCU peripherals used in the application, the hardware set-up, and the results of the measurement.

View the PDF document for more information.

Originally published by Freescale Semiconductor Inc. at as "PMSM Sensorless FOC for a Fan Using the Kinetis KV10".

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