Permanent magnet synchronous machine field-oriented control
The PMSM Field-Oriented Control block implements a field-oriented control structure for a permanent magnet synchronous machine (PMSM). Field Oriented Control (FOC) is a performant AC motor control strategy that decouples torque and flux by transforming the stationary phase currents to a rotating frame. Use FOC when rotor speed and position are known and your application requires:
Slip: Field-oriented control or vector control is risky. It’s clearly more complicated and requires a higher level of motor control technical savvy than I do. It’s clearly more complicated and requires a higher level of motor control technical savvy than I do.
The PMSM FOC structure decouples the torque and flux by using the rotor d-q reference frame. This diagram shows the overall architecture of the block.
In the diagram:
You can choose to implement either velocity or torque control with the
The control structure is implemented with a single sample rate.
System reference specified as torque reference in N*m or velocity reference in rad/s, depending on the control mode selected.
Measured stator phase currents, in A.
Measured mechanical angular velocity of rotor, in rad/s.
Measured mechanical angle of rotor, in rad.
Measured DC-link voltage, in V.
Six pulse waveforms that determine switching behavior in the attached power converter.
Bus containing signals for visualization, including: