Publication detail

Optimizing the Performance of Single-Phase Photovoltaic Inverter using Wavelet-Fuzzy Controller

KHAN, M. HAQUE, A. KURUKURU, V. BLAABJERG, F.

Original Title

Optimizing the Performance of Single-Phase Photovoltaic Inverter using Wavelet-Fuzzy Controller

Type

journal article in Scopus

Language

English

Original Abstract

During grid-connected operation, photovoltaic (PV) systems are usually operated to inject pre-set power to the grid. However, when the main grid is cut off from the PV system, standalone operation must be achieved while operating in voltage control mode. This brings new challenges for the control of PV inverters, i.e., voltage regulation and harmonic elimination. In this research, a wavelet-based fuzzy control for standalone operation of single-phase inverters is designed. The proposed controller regulates the output voltage by adjusting the fuzzy controller weights, which are operating in closed loop with the pulse width modulation generator. A hardware prototype of 1kWp standalone PV system is developed, and the proposed control method is evaluated on it. The proposed control achieves 6% of output voltage regulation under steady state and step load conditions while reducing total harmonic distortion (THD) for steady state condition. The THD of the proposed system operating with linear loads is observed to be 2.18%, and for nonlinear loads, it is around 2.71% under simulation conditions.

Keywords

Solar inverter; H5 transformerless topology; Wavelet transform; Fuzzy logic control; Total harmonic distortion; Standalone inverter

Authors

KHAN, M.; HAQUE, A.; KURUKURU, V.; BLAABJERG, F.

Released

1. 3. 2023

Publisher

Elsevier

ISBN

2772-6711

Periodical

e-Prime - Advances in Electrical Engineering, Electronics and Energy

Year of study

3

Number

March 2023

State

Kingdom of the Netherlands

Pages from

1

Pages to

12

Pages count

12

URL

https://www.sciencedirect.com/science/article/pii/S277267112200064X

BibTex

@article{BUT180365,
  author="Mohammed Ali {Khan} and Ahteshamul {Haque} and V S Bharath {Kurukuru} and Frede {Blaabjerg}",
  title="Optimizing the Performance of Single-Phase Photovoltaic Inverter using Wavelet-Fuzzy Controller",
  journal="e-Prime - Advances in Electrical Engineering, Electronics and Energy",
  year="2023",
  volume="3",
  number="March 2023",
  pages="1--12",
  doi="10.1016/j.prime.2022.100093",
  issn="2772-6711",
  url="https://www.sciencedirect.com/science/article/pii/S277267112200064X"
}