Speed Control of an SPMSM Using a Tracking Differentiator-PID Controller Scheme with a Genetic Algorithm

Noor Hameed Hadi, Ibraheem Kasim Ibraheem

Abstract


In this paper, a Tracking Differentiator-Proportional Integral and Derivative (TD-PID) control scheme is proposed to control the speed of a Surface Mount Permanent Magnet Synchronous Motor (SPMSM) in the presence of parameter variations, torque variations, and time-varying reference speeds. The TD is used to generate the necessary transient profile for both the reference and the output speed, which are compared with each other to produce the error signals that feed into the PID controller. In addition to the TD unit parameters,the PID controller’s parameters are tuned to achieve the optimum new multi-objective performance index,comprised of the integral of the time absolute error (ITAE), the absolute square of the control energy signal (USQR), and the absolute value of the control energy signal (UABS) andutilising a Genetic Algorithm (GA).A nonlinear model of the SPMSM is considered in the design andthe performance of the proposed TD-PID scheme was validated by comparing its performance with that of a traditional PI controller in a MATLAB environment. Several different case studies were simulated and tested to show the effectiveness of the proposed scheme,with variable reference speeds, parameters uncertainties, and load torque. The obtained results, including peak overshoot, speed of response, energy consumption, and control signal chatter, illustrate the proposed scheme's success as compared to the traditional PI controller.

Keywords


PMSM control; PID control; Genetic algorithm; Tracking differentiator; Genetic algorithm; Performance index; Speed control

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DOI: http://doi.org/10.11591/ijece.v11i2.pp%25p
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