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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Mamat, Mohd Nadzri
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Control & Systems Engineering Electrical & Electronics Engineering

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Analysis and implementation of peak armature current (Imax) of a chopper-fed DC-DC motor drive in DCM Abdullah, Mohamad Nazir; Mohamed Hariri, Muhammad Hafeez; Mat Desa, Mohd Khairunaz; Mamat, Mohd Nadzri; Kaharuddin, Suardi
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 1: March 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i1.pp96-105

Abstract

At low frequencies of operation in a chopper-fed direct current (DC) motor drive, the armature current may become discontinuous thus the controller operates in discontinuous conduction mode (DCM). Since the minimum armature current is zero in DCM, the analysis of peak armature current (Imax) is to investigate the ripple content in armature current at different values of duty cycle which will help in decreasing the peaky current of DC motor during operation. The simulation was carried out using MATLAB-Simulink software and the laboratory setup was based on Atmega 328 microcontroller board. In this paper, the theoretical and experimental analysis of peak armature current were performed at fix low frequency in DCM and variable duty cycles to provide full control of DC motor speed. The results show that the peak armature current changes with the change of duty cycles and its magnitude is decreased almost 50% at higher duty cycle values.
Co-Authors Abdullah, Mohamad Nazir Kaharuddin, Suardi Mat Desa, Mohd Khairunaz Mohamed Hariri, Muhammad Hafeez