Structural study of a DC motor model in MATLAB R2024a software
DOI:
https://doi.org/10.34185/1991-7848.itmm.2025.01.072Keywords:
DC motor, operating modes, electromagnetic torque, starting current, armature current sensor, controlled voltage source, dynamic characteristicAbstract
The structure of the mathematical model of a DC motor in the MATLAB v.R2024a software is studied. A feature is the absence of a ban on increasing the motor speed at values of the electromagnetic torque less than the reactive torque, which should be taken into account. The study of the motor operating modes was performed according to the mechanical characteristic in dynamic mode, which was taken using the XY Graph block and which covers all possible operating modes except dynamic braking. Also, a transient analysis was performed in parallel using the oscillograms of currents, speed and torque. This model takes into account the task of an arbitrary load diagram in time using the Stair Generator block. The considered structure of the DC motor model can be easily integrated with control systems, combined with PID controllers, control algorithms, and using PWM modulation for control. For correct modeling, it is necessary to have accurate motor parameters.
References
Electrical machine fundamentals with numerical simulation using MATLAB/SIMULINK by Iqbal, Atif; Moinoddin, Shaikh; Reddy, Bhimireddy Prathap 2021, 1
Implement wound-field or permanent magnet DC machine. URL: https://www.mathworks.com/help/sps/powersys/ref/dcmachine.html?searchHighlight=DC%20Machine&s_tid=srchtitle_support_results_1_DC%20Machine (date of access: 03.04.2025).
Variable torque on DC Machine URL: https://www.mathworks.com/matlabcentral/fileexchange/81723-variable-torque-on-dc-machine?s_tid=srchtitle_support_results_3_DC%20Machine (date of access: 03.04.2025).
DC Motor Control URL: https://www.mathworks.com/help/control/ug/dc-motor-control.html (date of access: 03.04.2025).
