Intelligent Model Based Predicative Controller for DC-DC Converter in Photovoltaic Systems

Subject Areas : International Journal of Smart Electrical Engineering

Hadi Saghafi ¹ , Amin Rasoulian ² , Mohammadali Abbasian ³ , Majid Delshad ⁴

1 - Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
2 - Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
3 - Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
4 - Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran

Received: 2022-10-13 Accepted : 2022-12-03 Published : 2023-09-01

Keywords: DC-DC converter, Model predictive control, one-dimensional convolutional neural network, dynamic weighting training process,

Abstract :

The DC-DC converters are one of the most widely used power electronics infrastructure in the modern systems including renewable generations. With development of DC-DC converters, the control system of the DC-DC converters role is becoming more and more. To this end, model predictive control (MPC) is known as one of the potential solutions. Although MPC is an easily implemented control system, it needs a high computational complexity due to the dependency on solving an iterative optimization problem. To overcome this problem, this study develops an artificial intelligence-based on one-dimensional convolutional neural network (1D-CNN) based MPCs. While 1D-CNN benefits from the inherent strong feature extraction/selection capability and lower computational complexity than other deep methods, it still cannot properly track the dynamic changes due to fixed weights during the training process. Thus, this paper integrates the dynamic weighting training process and proposed dynamic weighing 1D-CNN for the implementation of intelligent MPC for the DC-DC converters. The numerical results show an efficient performance of the proposed system and also verifies the superiority of the proposed method in comparison with the conventional MPC and several state-of-the arts shallow and deep-based MPC for the DC-DC converters in terms of the total harmonic distortion (THD).