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This work describes a novel modeling and simulation approach of brushless DC motor control system depended on analysis of it's mathematical model. The brushless DC motor ontology model, the voltage type inverter circuit model, the hysteresis current tracking comparative model and the PID speed controller model were constructed in the Simulink environment of Matlab. S-function was used in modeling...
Based on the small-signal model of the half-bridge circuit, the double close loops control system of the inverter arc welding power supply was designed under the average current control mode. For the control system's voltage and current controllers, the loop gains, angular frequencies of zeros and poles were determined. The simulation model of the designed double close loops control system was established...
Average switch models for both small signal and large signal performance of a phase-shifted full-bridge PWM (PS-FB-PWM) converter under charge control called charge-controlled ZVS-PWM switch (QC-ZVS-PWM) are developed in this paper. By substituting these models into cycle-by-cycle model of PS-FB-PWM converter the small signal and large signal behavior of the converter can be easily predicted. Implementation...
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