scholarly journals A Novel Three phase Three Wire UPQC (Unified Power Quality Conditioner) Configuration using Ten Switch Topology for linear RL loads

2021 ◽  
Vol 10 (4) ◽  
pp. 232-235
Author(s):  
K.Bharath Kumar ◽  
Dongari Vamshy ◽  
Mahesh Chanda
Keyword(s):  
Power Quality ◽  
Power Structure ◽  
Effective Utilization ◽  
Matlab Simulink ◽  
Unified Power Quality Conditioner ◽  
Three Phase ◽  
Simulation Results ◽  
Power Quality Conditioner ◽  
Basic Power ◽  
Configuration Scheme

This paper presents a novel configuration scheme for UPQC using ten switch topology. Generally, two six-switch inverters connected back to back will form the basic power structure of three wire three phase UPQC. But there are some switches which are less utilized all the time. In order to improve the efficiency of the system, or to improve the effective utilization of the IGBTs there is a need to reduce the switch count in the system. The proposed topology uses only ten switches and gives all the results pertaining to twelve switch toplogy. The Simulation results of proposed UPQC Topology are validated through MATLAB/Simulink environment.

Unified Power Quality Conditioner Using Injection Capacitors for Voltage Sag Compensation

2017 ◽  
Vol 6 (1) ◽  
pp. 36
Author(s):  
Madhusmita Patro ◽  
Kanhu Charan Bhuyan
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Power Factor ◽  
Supply Voltage ◽  
Voltage Source ◽  
Distortion Compensation ◽  
Unified Power Quality Conditioner ◽  
Three Phase ◽  
In Series ◽  
Power Quality Conditioner

<p>Power quality has become an important factor in power systems, for consumer and household appliances. The main causes of poor power quality are harmonic currents, poor power factor, supply voltage variations etc. A technique of achieving both active current distortion compensation, power factor correction and also mitigating the supply voltage variations at load side is compensated by unique device UPQC presented in this thesis. This concept presents a multi loop based controller to compensate power quality problems through a three phase four wire unified power quality conditioner (UPQC) under unbalanced and distorted load conditions. Here the UPQC is constituted of two voltage source converters (VSC) connected via power link. The series compensator is connected to the line in series and injects the voltage and thus compensates for voltage issues; whereas the shunt compensator injects current thus compensating for current issues, and is connected in shunt to the line. The voltage injection to the line uses an injecting transformer. The injection transformer is later replaced with injection capacitors, thus eliminating the drawback of conventional UPQC. In this way a good power quality is maintained.</p>

Unified Power Quality Conditioner Using Injection Capacitors for Voltage Sag Compensation

2017 ◽  
Vol 6 (1) ◽  
pp. 35
Author(s):  
Madhusmita Patro ◽  
Kanhu Charan Bhuyan
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Power Factor ◽  
Supply Voltage ◽  
Voltage Source ◽  
Distortion Compensation ◽  
Unified Power Quality Conditioner ◽  
Three Phase ◽  
In Series ◽  
Power Quality Conditioner

<p>Power quality has become an important factor in power systems, for consumer and household appliances. The main causes of poor power quality are har ue of achieving active current distortion compensation, power factor monic currents, poor power factor, supply voltage variations etc. A techniq correction and also mitigating the supply voltage variations at load side is compensated by unique device UPQC presented in this thesis. This concept presents a multi loop based controller to compensate power quality problems through a three phase four wire Unified Power Quality Conditioner (UPQC) under unbalanced and distorted load conditions. Here the UPQC is constituted of two Voltage Source Converters (VSC) connected via power link. The series compensator is connected to the line in series and injects the voltage and thus compensates for voltage issues; whereas the shunt compensator injects current thus compensating for current issues, and is connected in shunt to the line. The voltage injection to the line uses an ijecting transformer. The injection transformer is later replaced with injection capacitors, thus eliminating the drawback of conventional UPQC. In this way a good power quality is maintained</p>

Unified Power Quality Conditioner Using a Fuzzy Controller

2010 ◽  
Vol 11 (4) ◽  
Author(s):  
Chirag Patel ◽  
Ranjit Mahanty
Keyword(s):  
Mathematical Model ◽  
Dynamic Response ◽  
Power Quality ◽  
Set Theory ◽  
Fuzzy Controller ◽  
Pi Controller ◽  
Linguistic Variable ◽  
Unified Power Quality Conditioner ◽  
Three Phase ◽  
Power Quality Conditioner

The paper presents a three-phase unified power quality conditioner using a fuzzy controller. The fuzzy controller replaces the conventional PI controller in this work. The results obtained through the fuzzy controller are found superior to those obtained through conventional PI controller in terms of dynamic response. This is because of the fact that the fuzzy controller is based on a linguistic variable set theory and does not require a mathematical model of the system. Moreover, the tedious method of tuning the PI controller is not required in case of fuzzy controller. Simulations are carried out using MATLAB/Simulink to validate the theoretical findings.

A Novel Hybrid Unified Power Quality Conditioner (UPQC) for Medium-Voltage Power Grid

2013 ◽  
Vol 816-817 ◽  
pp. 774-777
Author(s):  
Tian Bo Zhu ◽  
Hua Geng
Keyword(s):  
Power Quality ◽  
Simulation Study ◽  
Power Grid ◽  
Power Devices ◽  
Detailed Design ◽  
Matlab Simulink ◽  
Medium Voltage ◽  
Harmonic Currents ◽  
Three Phase ◽  
Power Quality Conditioner

This paper proposed a three-phase three wire UPQC (hybrid UPQC). The topology is novel which consists of a series and a hybrid shunt filters. The unique topology can reduce the capacity of power devices in the hybrid UPQC when compensating source harmonic currents. In this paper a detailed design about the main circuit is presented. Finally a simulation study of the proposed hybrid UPQC has been carried out by using MATLAB/Simulink. The results verified the effectiveness of the UPQC topology.

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