| Abstract |
A dynamic simulation model for the brushless dc (BLDC) motor drives using Matlab is presented. In this
model, an entire BLDC motor drive, including power conversion unit, BLDC motor, and speed/torque control
system, is investigated. Especially, the PWM inverter is modeled using switching function concept, so that the detailed
voltage and current waveforms, such as line-to-line voltages, inverter input current, ac line current, and switch/diode
currents, can be obtained and average/rms ratings of the components can be easily calculated. Also, the proposed
model is made into modular blocks and it can be easily extended to other ac motor applications with a little
modification. The detailed modeling method is explained and its actual implementation is described. The validity of
the proposed model is verified by various simulation results. |
