ZHCSOS0C august 2021 – june 2023 MCF8316A
PRODUCTION DATA
The MCF8316A drives the motor using Field Oriented Control (FOC) as shown in Figure 7-29. In closed loop operation, the motor angle (Ɵest) and speed (Speed_meas) are estimated using the back-EMF observer. The speed and current regulation are achieved using PI control loop. In order to achieve maximum efficiency, the direct axis current is set to zero (Id_ref = 0), which will ensure that stator and rotor field are orthogonal (90o out of phase) to each other.