# Fractional fuzzy PI controller using particle swarm optimization to improve power factor by boost converter

## Authors

• Metin Demirtas Department of Electrical and Electronics Engineering, Balikesir University, Turkey
• Farhan Ahmad Department of Electrical and Electronics Engineering, Balikesir University, Turkey

## Keywords:

DC-DC boost converter, PI and fuzzy logic controller, Fractional order PI controller, Power factor, Particle swarm optimization

## Abstract

The power circuit of AC voltage controller capable of operating at a leading, lagging, and unity power factor is studied by a lot of researchers in the literature. Circuits working with high switching frequency are known as power factor correctors (PFCs). The single-phase boost converter has become the most popular topology for power factor correction (PFC) in general purpose power supplies. Power factor correction circuit provides conventional benefits to electric power systems. The benefits are the reduction of power factor penalty and utility bill and power loss. Therefore, a boost converter power factor correction scheme is presented in this paper. A PI, fuzzy logic PI and fractional order PI (FOPI) controllers are used to fix an active shaping of input current of the circuit and to improve the power factor. The controller parameters (coefficients) are optimized using the Particle Swarm Optimization (PSO) algorithm. Average current mode control (ACMC) method is used in the circuit. The converter circuit consists of a single-phase bridge rectifier, boost converter, transformer and load. A mathematical model of the plant is required to design the PI controller. A model for power factor correction circuit is formed in MATLAB/Simulink toolbox and a filter is designed to reduce THD value. The proposed model is simulated using a combination of PI, fuzzy logic and FOPI controllers. The control scheme is applied to 600 Watt PFC boost converter to get 400 Volt DC output voltage and 0.99 power factor. The input voltage is 230 VRMS with 50 Hz. The combination of FOPI and PI controller has the best solution to control the power factor according to PI and fuzzy controllers.

## Author Biographies

### Metin Demirtas, Department of Electrical and Electronics Engineering, Balikesir University, Turkey

Metin Demirtas received Ph.D. degree in Electrical Engineering from Yıldız Technical University in 2002. He is a full professor of Electrical and Electronics Engineering Department at Balikesir University, Turkey. He is working on power electronics, electrical machines, and control.

### Farhan Ahmad, Department of Electrical and Electronics Engineering, Balikesir University, Turkey

Farhan Ahmad was born in Pakistan. He studied F.Sc (Pre-engineering) in GOVT Higher Secondary School Muridke. He graduated from one of the public sector of Pakistan; University of Gujrat, Gujrat in the department Electrical Engineering and technology at the program of BS Electrical Technology in 2015. He worked 3 years in semi-automatic plant of Steel Industry. He graduated from Electrical and Electronics MSc program at Balikesir University, Turkey. His specialization is in the field of power electronics.

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## Published

2023-07-27
CITATION
DOI: 10.11121/ijocta.2023.1260
Published: 2023-07-27

## How to Cite

Demirtas, M., & Ahmad, F. (2023). Fractional fuzzy PI controller using particle swarm optimization to improve power factor by boost converter. An International Journal of Optimization and Control: Theories & Applications (IJOCTA), 13(2), 205–213. https://doi.org/10.11121/ijocta.2023.1260

## Section

Research Articles