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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Bulletin of Electrical Engineering and Informatics
Hasan, Shameem
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Control & Systems Engineering Electrical & Electronics Engineering

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SIMULATION FOR IMPROVEMENT OF DC MOTOR CONTROLLERS’ RESPONSE WITH APPLICATION TO A MOBILE ROBOT Hasan, Shameem; Sarowar, Golam
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 11, No 2: June 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (64.433 KB) | DOI: 10.11591/ijpeds.v11.i2.pp580-593

Abstract

In this study, different precise and appropriate control mechanisms for speed and steering control of a robot with mobile movement that use a Direct Current motor, have been simulated for improved controllers? response. Proportional-Integral-Derivative (PID), Lead-Lag compensator, and Fuzzy Logic Controller (FLC) are designed as well as simulated to provide command over the angular speed of a Direct Current motor mounted in the robot. The response of the Direct Current motor for every controller is observed and compared among each other for a sinusoidal and a step input which indicate speed as well as position respectively of mobile robot. The performance analysis indicates that the Lead-Lag compensator and PID controller can be considered effective for the task assigned for steering the wheel and Fuzzy Logic Controller (FLC) is efficient for wheel speed controlling. Considering the overall improved performance of the mobile robot in terms of precision of speed control as well as steering capability, it seems reasonable to conclude that the proposed design criteria were effective and satisfactory.
A new topology of non-isolated AC-DC quadratic boost converter with enhanced power traits Ahmed, Istiak; Azad, Ferdous S.; Hasan, Shameem; Al Mamun, Abdullah; M. Salim, Khosru
Bulletin of Electrical Engineering and Informatics Vol 13, No 3: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v13i3.6624

Abstract

A novel AC-DC quadratic boost converter (QBC) topology is presented in this paper which can provide higher power factor (PF), lower total harmonic distortion (THD) and higher voltage when compared to a conventional AC-DC boost convertero This is achieved by using additional switched capacitor and switched inductor in the power processing stage. The presented converter is analyzed theoretically, and a voltage gain equation is derived. A simulation model is created to evaluate the converter performance under various duty cycles, switching frequency, and changing output load. The input PF, THD, and voltage gain of the simulated model were compared with conventional converter to determine the validity of the suggested converter circuit. The results show that the efficiency, PF, THD and voltage gain value reaches approximately 97.9%, 0.98, 16.14, and 2.83 respectively at a duty cycle of 50% with fixed output load of 100 Ω. A dual loop voltage and current controller is also arrayed with the proposed circuit which allows further enhancement in PF (0.997) and THD (7.45%). This converter can be a suitable option for systems where isolation is not necessary but high PF, high voltage gain and low THD are required.
Co-Authors Ahmed, Istiak Al Mamun, Abdullah Azad, Ferdous S. M. Salim, Khosru Sarowar, Golam