Torque Ripple Reduction In Proportional Integral (PI) Control Of Direct Current (DC) Motor Drives

Wan Robiah, Wan Ismail (2006) Torque Ripple Reduction In Proportional Integral (PI) Control Of Direct Current (DC) Motor Drives. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The used of DC motor these recent years has been increased due to the human needs that been applied to the robotic, machine and others. In this project, the classical technique control which is PI controller has been studied for servo application to drive the system or loads to control speed and torque. The main objective of this project is to reduce the torque ripple in DC motor drives by using unipolar switching scheme instead of bipolar switching scheme. Besides, this project objective is also to obtain good performances of the DC motor drives which are minimum of overshoot and fast transient response. To design this controller, the cascade control structure has been applied. In this report, the torque and speed control will be discussed. In the first stage, the PI controller is designed to get the proper value of gain Kp and Ki for speed and torque controller by using linear theory analysis. Then the PI values of the torque and speed will be evaluated under a large signal analysis using Simulink Matlab. Finally, the torque control to observe the torque ripple reduction using unipolar switching scheme of DC motor drives has been constructed and simulated using ORCAD PSPICE (the schematic circuit can be presented as practical experimental set-up).

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