Power quality evaluation of photovoltaic grid interfaced cascaded H-bridge nine-level multilevel inverter systems using D-STATCOM and UPQC

Akhil Gupta

Energy, 2022, vol. 238, issue PB

Abstract: The enhancement in Power Quality (PQ) becomes essential to increase the overall performance of equipment in utility-grid tied systems. To enhance PQ, this paper enumerates operational impact of Distribution Static Compensator (D-STATCOM) and Unified Power Quality Conditioner (UPQC) into a cascaded H-bridge Nine-Level Multi-Level Inverter (NL:MLI). The effectiveness of proposed topology is evaluated at a constant 200 V DC voltage and two SPV arrays of 100 kW each. A PQ comparative analysis is presented under faulted conditions at linear load. In order that the proposed system operates effectively under changing environment conditions, the implementation of a competent control techniques is dominant. Consequently, the control approach for D-STATCOM and UPQC compensates reactive power requirement of load and utility-grid. Total Harmonic Distortion (THD) and DC offset current are estimated, with distortion-less current-voltage waveforms obtained at coupling points. THD levels are validated in agreement with IEEE-519 standard. Indeed, the effectiveness of UPQC is demonstrated by feeding excess power through SPV arrays into variable DC link. Overall, the operation of UPQC interfaced with NLMLI is effective over D-STATCOM in alleviatin g harmonics, DC-offsets, and voltage-current imbalances during faulted conditions. The accurateness of simulation results and their comparative analysis is found to be satisfactory.

Keywords: Multilevel; Inverter; Power quality; Photovoltaic; Custom power (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544221019551
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:238:y:2022:i:pb:s0360544221019551

DOI: 10.1016/j.energy.2021.121707

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().