Real-Time Validation of a Novel IAOA Technique-Based Offset Hysteresis Band Current Controller for Grid-Tied Photovoltaic System

Bhabasis Mohapatra, Binod Kumar Sahu (), Swagat Pati, Mohit Bajaj (), Vojtech Blazek (), Lukas Prokop, Stanislav Misak and Mosleh Alharthi
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Bhabasis Mohapatra: Department of Electrical Engineering, ITER, Siksha ‘O’ Anusandhan (Deemed to be University), Odisha 751030, India
Binod Kumar Sahu: Department of Electrical Engineering, ITER, Siksha ‘O’ Anusandhan (Deemed to be University), Odisha 751030, India
Swagat Pati: Department of Electrical Engineering, ITER, Siksha ‘O’ Anusandhan (Deemed to be University), Odisha 751030, India
Mohit Bajaj: Department of Electrical Engineering, Graphic Era (Deemed to be University), Dehradun 248002, India
Vojtech Blazek: ENET Centre, VSB—Technical University of Ostrava, 708 00 Ostrava, Czech Republic
Lukas Prokop: ENET Centre, VSB—Technical University of Ostrava, 708 00 Ostrava, Czech Republic
Stanislav Misak: ENET Centre, VSB—Technical University of Ostrava, 708 00 Ostrava, Czech Republic
Mosleh Alharthi: Department of Electrical Engineering, College of Engineering, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia

Energies, 2022, vol. 15, issue 23, 1-26

Abstract: Renewable energy sources have power quality and stability issues despite having vast benefits when integrated with the utility grid. High currents and voltages are introduced during the disconnection or injection from or into the power system. Due to excessive inverter switching frequencies, distorted voltage waveforms and high distortions in the output current may be observed. Hence, advancing intelligent and robust optimization techniques along with advanced controllers is the need of the hour. Therefore, this article presents an improved arithmetic optimization algorithm and an offset hysteresis band current controller. Conventional hysteresis band current controllers (CHCCs) offer substantial advantages such as fast dynamic response, over-current, and robustness in response to impedance variations, but they suffer from variable switching frequency. The offset hysteresis band current controller utilizes the zero-crossing time of the current error for calculating the lower/upper hysteresis bands after the measurement of half of the error current period. The duty cycle and hysteresis bands are considered as design variables and are optimally designed by minimizing the current error and the switching frequency. It is observed that the proposed controller yields a minimum average switching frequency of 2.33 kHz and minimum average switching losses of 9.07 W in comparison to other suggested controllers. Results are validated using MATLAB/Simulink environment followed by real-time simulator OPAL-RT 4510.

Keywords: arithmetic optimization algorithm (AOA); conventional hysteresis band current controller (CHCC); improved arithmetic optimization algorithm (IAOA); offset hysteresis band current controller (OFHCC); particle swarm optimization (PSO) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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