Optimized field oriented control strategies for permanent magnet synchronous motors

摘要

A motor control system and associated method includes a transform component configured to receive current values associated with a motor being driven by the motor control system, and output rotating coordinate system values representing a flux generating component and a torque generating component of a current space vector. The motor control system and method further includes a control component configured to receive the flux generating component and the torque generating component of the current space vector, and generate motor control signals for driving the motor by performing a Cartesian to polar transform to obtain values associated with a rotating coordinate system followed by an angle addition to convert the rotating coordinate system values to values of a stationary coordinate system.

主权项

1. A motor control system, comprising:
a transform component configured to receive current values associated with a motor being driven by the motor control system, and output rotating coordinate system values representing a flux generating component and a torque generating component of a current space vector, wherein the transform component comprises:
a Clarke transform component configured to receive the current values associated with respective phases of the motor being drive, and convert the current values into a Cartesian space to obtain Cartesian current values; anda Park transform component configured to receive the Cartesian current values and convert such into the flux generating component and the torque generating component of the current space vector; and a control component configured to receive the flux generating component and the torque generating component of the current space vector, and generate motor control signals for driving the motor by performing a Cartesian to polar transform to obtain values associated with a rotating coordinate system followed by an addition with a position angle to convert the rotating coordinate system values to values of a stationary coordinate system to generate a voltage space vector, wherein the control component further comprises:
a torque generating component controller configured to receive the torque generating component of the current space vector and a feedback control value associated with a speed value and a reference value, and generate a torque generating component of a voltage space vector based thereon, wherein the speed value is calculated from a position angle; and a position estimator component configured to generate the position angle employing the Cartesian current values from the Clarke transform component and Cartesian voltage values based on the voltage space vector output from the control component.