Analysis Of Smc Based Variable Speed Phase Controlled Dc...

Analysis Of Smc Based Variable Speed Phase Controlled Dc...

Analysis of SMC based Variable–Speed Phase–Controlled dc Drive for its Speed Range

Mohammad Ali and Mohammad Ayyub

Department Of Electrical Engineering

Aligarh Muslim University

Aligarh, UP, India

Email: m_ali.rs@amu.ac.in



Abstract– The paper presents an analytic insight into the speed control of a dc Motor drive using a more stout, prompt and stabilized technique than conventionally used. The desired dynamics are difficult to achieve with conventional controllers. New techniques are attempted in the literature to get the desired performance. Here, Sliding Mode Control – a robust and non–linear control, is considered. Its understanding is simple and the performance of the whole drive system is found to be much enhanced as compared to the conventional Proportional Integral Control method. In this paper, analysis of the dc drive is done when subjected to different circumstances of speed variations as well as load variations. It is then established that the range of speed under which the drive can operate – without changing the parameters of the controllers, is much wider with the Sliding Mode Control.

Keywords– dc Motor, PI Control, SMC, VSC, Matlab/Simulink Introduction

Dc Motors were once the only devices known to convert electrical energy to mechanical energy or vice versa. Although they were inherited successfully by ac motors and vector control drives; they still show promising advantages like reliability, cost effectiveness, and moreover operator friendliness.

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