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An advanced control technique for power quality improvement of grid-tied multilevel inverter

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journal contribution
posted on 2024-06-06, 10:00 authored by S Jahan, SP Biswas, MK Hosain, MR Islam, S Haq, Abbas KouzaniAbbas Kouzani, MAP Mahmud
The use of different control techniques has become very popular for controlling the performance of grid-connected photovoltaic (PV) systems. Although the proportional-integral (PI) control technique is very popular, there are some difficulties such as less stability, slow dynamic response, low reference tracking capability, and lower output power quality in solar PV applications. In this paper, a robust, fast, and dynamic proportional-integral resonance controller with a harmonic and lead compensator (PIR + HC + LC) is proposed to control the current of a 15-level neutral-point-clamped (NPC) multilevel inverter. The proposed controlled is basically a proportional-integral resonance (PIR) controller with the feedback of a harmonic compensator and a lead compensator. The performance of the proposed controller is analyzed in a MATLAB/Simulink environment. The simulation result represents admirable performance in terms of stability, sudden load change response, fault handling capability, reference tracking capability, and total harmonic distortion (THD) than those of the existing controllers. The responses of the inverter and grid outlets under different conditions are also analyzed. The harmonic compensator decreases the lower order harmonics of grid voltage and current, and the lead compensator provides the phase lead. It is expected that the proposed controller is a dynamic aspirant in the grid-connected PV system.

History

Journal

Sustainability (Switzerland)

Volume

13

Article number

ARTN 505

Pagination

1-20

Location

Basel, Switzerland

Open access

  • Yes

eISSN

2071-1050

Language

English

Publication classification

C1 Refereed article in a scholarly journal

Issue

2

Publisher

MDPI