Study of Power Quality Improvement Using UPQC
نویسندگان
چکیده
This paper describes role of UPQC as applied to a 3P4W system to improve PQ. The Forth wire of 3P4W system is developed by means of neutral of series transformer. Neutral current which flows through neutral terminal of transformer is removed with the help of 4 leg voltage source inverter (VSI) topology for shunt part. The series transformer neutral will have 0 potential in all conditions of operation. Simulation is carried out by considering the major PQ issues like voltage, current, harmonic by connecting load which is nonlinear in nature to 3P4W scheme with UPQC. A novel control strategy of unit vector template is implemented here for designing series APF. By extending the principle of single phase PQ theory, series APF can be used for balancing the unbalanced voltage present at the load side. The PQ theory as applied to the 3 phase balanced system can even be independently used for unbalanced system.
منابع مشابه
Power Quality Improvement Using Matrix Converter Based UPQC
This paper proposes a matrix converter based unified power quality conditioner (MC–UPQC) for mitigating power quality problems. This proposed system is a combination of unified power quality conditioner and matrix converter. The UPQC is a combination of back-toback connected series and shunt active filters through a dclink. Voltage disturbances and harmonics are compensated by series active fil...
متن کاملA Comparative Analysis of UPQC for Power Quality Improvement
The widespread use of Power Electronics based equipment has produced a significant impact on quality of electric power supply. Conventional power quality mitigation equipment is providing to be inadequate for an increasing number of applications. One modern and very promising solution that deals with both load current and supply voltage imperfections is the Unified Power Quality Conditioner (UP...
متن کاملA Control Strategy Based on UTT and ISCT for 3P4W UPQC
This paper presents a novel control strategy of a threephase four-wire Unified Power Quality (UPQC) for an improvement in power quality. The UPQC is realized by integration of series and shunt active power filters (APFs) sharing a common dc bus capacitor. The shunt APF is realized using a thee-phase, four leg voltage source inverter (VSI) and the series APF is realized using a three-phase, thre...
متن کاملPerformance Study of Unified Power Quality Conditioner Using Matlab Simulink
Modern power system comprises of complex networks, where many generating stations and load centres are interconnected through long power transmission and distribution networks. Utility distribution networks, critical commercial operations and sensitive industrial loads all suffer from various types of outages and interruptions which can lead to significant financial loss, loss of production, id...
متن کاملSimulation & Analysis of Unified Power Quality Conditioner (UPQC) for Power Quality Improvement
This paper presents an analysis on the unified Power quality conditioner (UPQC) to improve the electric power quality at distribution levels. Conventional power quality mitigation equipment is a providing to be poor for an increasing number of applications. Different approaches in compensation and recent developments in fields. Single modern and very promising solution that deal with both load ...
متن کاملApplication of PI, Fuzzy Logic and ANN in Improvement of Power Quality using Unified Power Quality Conditioner
The unified power quality conditioner (UPQC) is being used as a universal active power conditioning device to mitigate both current and voltage harmonics at a distribution side of power system network. This paper emphasis enhancement of power quality by using UPQC with fuzzy logic controller (FLC) and proportional-integral (PI) controller. The main purpose of the proposed (FLC) is capable of pr...
متن کامل