Closed-Loop Speed Control of PM-BLDC Motor Fed by Six Step Inverter and Effects of Inertia Changes for Desktop CNC Machine

I. Topaloglu, F. Korkmaz, H. Mamur, R. Gurbuz


The brushless DC motors with permanent magnets (PM-BLDC) are widely used in a miscellaneous of industrial applications. Usually, these applications are characterized by relatively high torque ripples. In this study, closed-loop speed control of PM-BLDC motor fed by six step inverter for desktop CNC machine investigated. Motor has 3 phases, 0.0089 kg/m2 /0.00091 kg/m2 changes inertia moment, 0.005 viscous damping, 3000 rpm reference speed, 4 poles and trapezoidal back EMF wave form. Inverter has 3 bridge arms, snubber resistance 5000 ohms, snubber capacitance 1 uF. Developed speed control PM-BLDC motor use in desktop CNC machine. Also simulated on MATLAB and results are presented in the study.



Closed loop systems; permanent magnet machines; position control; variable speed drives

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Print ISSN: 1392-1215
Online ISSN: 2029-5731