Improving the power quality of low-voltage AC-DC residential-industrial microgrids using a DSTATCOM based on improved three-level coupled-inductor ZSIs

Improving the power quality of low-voltage AC-DC residential-industrial microgrids using a DSTATCOM based on improved three-level coupled-inductor ZSIs

This paper introduces a novel approach to enhance power quality in distribution networks connected to low-voltage AC-DC residential-industrial microgrids. The proposed method leverages a Distribution Static Synchronous Compensator (DSTATCOM) utilizing improved three-level coupled-inductor Z-source i...

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Bibliographic Details
Main Authors: Shirin Besati, Mahyar Abasi, Ali Mosallanejad, Madhav Manjrekar
Format: Article
Language:English
Published: Elsevier 2025-09-01
Series:International Journal of Electrical Power & Energy Systems
Subjects:
Power quality
Harmonic pollution
Voltage unbalance
AC-DC industrial-residential microgrid
DSTATCOM
Three-level coupled-inductor ZSIs
Online Access:http://www.sciencedirect.com/science/article/pii/S0142061525003886
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Summary:This paper introduces a novel approach to enhance power quality in distribution networks connected to low-voltage AC-DC residential-industrial microgrids. The proposed method leverages a Distribution Static Synchronous Compensator (DSTATCOM) utilizing improved three-level coupled-inductor Z-source inverters (ZSIs). A comprehensive static and dynamic analysis is first conducted on classical Γ-ZSI, Y-ZSI, and trans-quasi-ZSI (TQ-ZSI) models, leading to the development of three improved designs. These designs are tailored to enhance power quality by reducing harmonic pollution at the grid connection point, increasing power factor, improving stability, mitigating voltage unbalance, and minimizing control complexity and structural costs. Additionally, the proposed method incorporates an analysis of the battery lifespan on the DC source side of the DSTATCOM. The DSTATCOM models are simulated in a distribution system connected to a real-world AC-DC residential-industrial microgrid through software implementation. The results across various scenarios demonstrate the effectiveness of the proposed design, highlighting its capability to achieve desirable power quality improvements.
ISSN:0142-0615

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