High Bandwidth Sensorless Algorithm for AC Machines Based on Squarewave Type

Thispaperdescribesanewcontrolalgorithmwhichcanenhancethedynamicsofasensorlesscontrolsystemandgivesaprecisesensorlesscontrolperformance.Insteadoftheconventionalsinusoidal-typevoltageinjection,asquare-wave-typevoltageinjectionincorporatedwiththeassociatedsignalp