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Automatika : journal for control, measurement, electronics, computing and communications, Vol. 64 No. 3, 2023.

Original scientific paper

https://doi.org/10.1080/00051144.2023.2192380

Frequency control scheme based on the CDM-PID controller for the hybrid microgrid system with stochastic renewable generators

M’hamed Helaimi ; Electrical Engineering Department, Laboratoire Génie Electrique et Energies Renouvelables (LGEER), Hassiba Benbouali University, Chlef, Algeria
Hossam A. Gabbar ; bFaculty of Energy Systems and Nuclear Science, University of Ontario Institute of Technology (UOIT), Oshawa, Canada
Rachid Taleb ; Electrical Engineering Department, Laboratoire Génie Electrique et Energies Renouvelables (LGEER), Hassiba Benbouali University, Chlef, Algeria *
Mohamed Regad ; Electrical Engineering Department, Laboratoire Génie Electrique et Energies Renouvelables (LGEER), Hassiba Benbouali University, Chlef, Algeria

* Corresponding author.

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Abstract

In this paper, we introduce a Coefficient Diagram Method (CDM) to design a conventional PID controller. This controller is used to decrease the frequency fluctuations of a microgrid system composed of two renewable energy sources (WTG and STPG) and four controlled elements (UC, FESS, BESS and DEG). The method compares two characteristic polynomials of the same order:, the coefficients of the first polynomial are a function of microgrid parameters and the unknown gains of the PID controller. The second is called the target polynomial; its coefficients are calculated by choosing the stability indices and the equivalent time constant to satisfy the desired performances of the closed-loop system. Mathematically, the order of the polynomial controller determines the type of linear system of equations to solve: undetermined or overdetermined. In our application, the least squares method is used to find an approximate solution to the overdetermined system resulting from this comparison. Digital simulation is performed to test the performance of the microgrid controlled by the CDM-PID controller. The obtained results are compared with two recently published works where the parameters of the PID controllers are tuned by DE and chaotic PSO algorithms. The results show that the CDM-PID controller gives better performance.

Keywords

Microgrid; PID controller; coefficient diagram method (CDM); least squares method; chaotic PSO-PID; DE-PID

Hrčak ID:

315765

URI

https://hrcak.srce.hr/315765

Publication date:

29.3.2023.

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