DTC CONTROL OF ELECTRICAL DRIVES SYSTEMS WITH BLDC MOTORS

Autor/autori: PhD Stud. Eng. Gheorghe URSANU, PhD Stud. Eng. Cristina DIACONESCU, Prof. Eng. Gheorghe BALUTA PhD

Rezumat: Tendintele actuale de limitare a pulsatiilor din cuplul motarelor BLDC au avut in vedere controlul direct al curentilor de faza ai acestuia pentru limitarea pulsatiilor ce apar la deconectarea fazelor statorice. In ultima perioada a crescut interesul pentru controlul direct al cuplului electromagnetic dezvoltat de motoarele BLDC in detrimentul controlului indirect al curentului tocmai in ideea de a obtine performante dinamice superioare. In acest fel asistam la o diminuare a riplului datorat comutarii fazelor statorice si a timpului de raspuns in cuplu comparativ cu metodele PWM conventionale.

Cuvinte cheie: Masina de curent continuu fara perii, Controlul direct al cuplului, procesor numeric de semnal.


Abstract: Current trends to limit the torque pulsation of BLDC motors have considered the direct control of the phase current to limitit the pulsations arising from disconnecting the stator windings. In recent years increased interest in direct control of electromagnetic torque developed by BLDC motors detrimental to indirect current has determined superior dynamic performance. Thus we see a decrease due to switching ripple phase stator and torque response time compared to conventional PWM methods.

Keywords: Brushless machines, Torque control, Digital signal processors, Digital control.

 

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