Power Quality Improvement Using Multi-level Inverter based DVR and DSTATCOM Using Neuro-fuzzy Controller

One among the contemporary power electronic controller in distribution system is Dynamic voltage restorer (DVR) used to guard the customers from the voltage variations. DVR output compensating signals organize the voltage signal in distribution system. DVR is triggered from the control pulses generated from the control methodology. The paper presents the different control methodologies for DVR to regulate the voltage wave in distribution system from sag/swell. Simulation analysis is conveyed by using MATLAB/SIMULINK tool and simulation results indicate the ability of DVR to regulate sag/swell in distribution system.

Section: Introductionmentioning

confidence: 99%

Analysis of Various Control Schemes of Dynamic Voltage Restorer for Power Quality Improvement in Distribution System

2019

“…In the Static compensator (STATCOM) with multilevel inverter (MLI) is used for bus voltage improvement and the reactive power. In the improvement of low voltage and disturbances in energy, the power based device dynamic voltage restorer (DVR) [6]. The voltage improvement of DVR and distributed STATCOM (D-STATCOM) are compared with the results [7].…”

Section: Introductionmentioning

confidence: 99%

Optimal Operation of Multi-Converter-UPQC for Power Quality Improvement in Distribution

2019

In this paper the power compensation for power system during faults in distribution line is described. The proposed system is designed by using the series and shunt APF based hysteresis control scheme to compensate harmonic distortion and control the system stability. Moreover, the system can be compensated the current as well as voltage simultaneously by using Unified Power Quality Controller (UPQC). Voltage Source Inverters (VSI) are connected in both the series and shunt. The main feeder is used to injecting power to these inverters using transformer and VSI compensate the imperfection line such as sag, interruption, swell, voltage unbalance. DC link voltage of the system is maintained at series and shunt operation. The proposed system is verified successfully and tested using MATLAB/Simulink.

“…They are further divided into different types based on their output wave form [1]. Multilevel inverters are emerging as the new technology for high and medium power applications [2][3].They are found useful in pumps, fans, compressors etc. Recently, they have been introduced into renewable energy applications like wind, PV and fuel cells [4].They have also been used in low and medium voltage applications [1,[5][6].…”

Section: Introductionmentioning

confidence: 99%

Three Phase Five Level T-Type Multi Level Inverter using Hybrid Sources

Ramya.¹,

Sathyanathan²,

Karthikeyan³

et al. 2019

Self Cite

This paper presents a 5 level T-type multilevel inverter, to improve the performance of the hybrid system and then improved voltage is injected into the grid. Two three level inverter with common emitter and common collector configurations are combined to obtain a five level inverter. PV and wind energy is used as a source of energy to the five level T-type MLI. It has advantages such as low switching losses, lesser THD, less filter requirement and superior output quality when compared to 3-level T-type MLI. PWM technique is employed to generate output voltage. The Simulation is done using MATLAB Simulink.