Journal ArticleDOI
A New Control Philosophy for a Unified Power Quality Conditioner (UPQC) to Coordinate Load-Reactive Power Demand Between Shunt and Series Inverters
Vinod Khadkikar,Ambrish Chandra +1 more
TLDR
In this paper, the authors proposed a new functionality of UPQC in which both the shunt and series APFs supply the load-reactive power demand, which not only helps to share the load reactive power demand but also helps to reduce the SHunt APF rating.Abstract:
This paper presents a novel philosophy to compensate the load-reactive power demand through a three-phase unified power quality conditioner (UPQC). Most of the UPQC-based applications show the dependency on shunt inverter for load-reactive power compensation, whereas the series inverter is always looked as controlled voltage source to handle all voltage-related problems. This paper proposes a new functionality of UPQC in which both the shunt and series APFs supply the load-reactive power demand. This feature not only helps to share the load-reactive power demand, but also helps to reduce the shunt APF rating, and hence, the overall cost of UPQC. This results in better utilization of the existing series inverter. The theory and complete mathematical analysis termed as ldquopower angle control (PAC)rdquo is presented. The simulation results based on MATLAB/Simulink are discussed in detail to support the concept developed in the paper. The proposed approach is also validated through experimental study.read more
Citations
More filters
Book ChapterDOI
Transient Response Performance-Based Comparative Studies of TBC Fed UPQC in Multibus-Based System with Conventional Converter
TL;DR: In this paper, a comparative study of peak step-up converter-based UPQC and conventional converter was conducted in a multibus-based system with conventional converter and TBC-fed UPQCs.
Journal ArticleDOI
Analysis of Backup Protection Action of a Transformer Caused by Improper Implementation of Voltage Regulation Measures
TL;DR: Aiming at a case of backup protection action of main transformer caused by improper implementation of voltage regulation measures, this paper analyzes the uneven load distribution and increase of reactive power loss caused by improperly adjustment of tap.
Journal Article
Generalized UPQC System With An Improved Control Method Using PV Array For Reduction Of Harmonics
Jyothir Mai,V. Swarupa +1 more
TL;DR: In this paper, a modified synchronous reference frame (SRF)-based control method to Shunt active filter and instantaneous PQ theory based control technique for series active filtering to compensate power quality (PQ) problems through a three-phase four-wire unified PQ conditioner (UPQC).
Journal Article
Control of Power Quality UsingTransformer less UPQC with SRF Control
TL;DR: This paper investigates the effectiveness of transformer less UPQC based on the SRF theory and finds that it avoids undesirable offset during energisation, increased loses and the cost.
Journal ArticleDOI
Control strategies for power quality enrichment in Distribution network using UPQC
TL;DR: In this paper , the authors investigated the implementation of UPQC control strategies and algorithms for improving power quality (PQ) and proposed a versatile control strategy to improve UPQQC performance.
References
More filters
Book
Understanding FACTS: Concepts and Technology of Flexible AC Transmission Systems
TL;DR: The Flexible AC Transmission System (FACTS)—a new technology based on power electronics—offers an opportunity to enhance controllability, stability, and power transfer capability of ac transmission systems.
Journal ArticleDOI
A review of active filters for power quality improvement
TL;DR: This paper presents a comprehensive review of active filter configurations, control strategies, selection of components, other related economic and technical considerations, and their selection for specific applications.
Journal ArticleDOI
New trends in active filters for power conditioning
TL;DR: In this article, the authors present the present status of active filters based on state-of-the-art power electronics technology, and their future prospects and directions toward the 21st Century, including the personal views and expectations of the author.
Journal ArticleDOI
The unified power quality conditioner: the integration of series- and shunt-active filters
Hideaki Fujita,Hirofumi Akagi +1 more
TL;DR: In this paper, a unified power quality conditioner (UPQC) is proposed to compensate for voltage flicker/imbalance, reactive power, negative-sequence current and harmonics.
Journal ArticleDOI
Unified power-flow control concept for flexible AC transmission systems
TL;DR: In this article, the authors outline the technical and economic factors which characterise the uniform, all solid-state power-flow controller approach for real-time controlled, flexible AC transmission systems.
Related Papers (5)
The unified power quality conditioner: the integration of series- and shunt-active filters
Hideaki Fujita,Hirofumi Akagi +1 more
UPQC-S: A Novel Concept of Simultaneous Voltage Sag/Swell and Load Reactive Power Compensations Utilizing Series Inverter of UPQC
Vinod Khadkikar,Ambrish Chandra +1 more