Space vector pulse modulation based motor driver

摘要

A motor driver may include a controller, a space vector modulator, a converter and a detector. The space vector modulator may generate driving signals under control of the controller according to a space vector pulse width modulation (“SVPWM”) scheme. The converter may derive AC signals from the driving signals received from the space vector modulator and may output the AC signals to the USM motor. The detector may generate feedback signals representing current and voltage supplied to the USM motor. The controller may revise estimates of space vectors, based on measurements from the detector, to control the space vector modulator to adjust frequencies, amplitudes, or phase angles of the plurality of AC signals.

主权项

1. A motor driver for a motor, comprising:
a space vector modulator to generate two sets of driving signals according to space vector pulse width modulation techniques; a controller to generate control signals to the space vector modulator; a converter to generate a plurality of AC signals from the driving signals; and a detector to measure current or voltage in the converter or the motor, wherein the controller alters the control signals to the space vector modulator based on a comparison of reference motor settings to measurements from the detector to adjust a characteristic of the AC signals generated by the converter.