Implementation Of Dynamic Voltage Restorer Research Articles

Implementation of Dynamic Voltage Restorer to Improve the Voltage Stability of a multi Bus System

Implementation of Dynamic Voltage Restorer to Improve the Voltage Stability of a multi Bus System

Power Quality Improvement in Induction Furnace by Harmonic Reduction Using Dynamic Voltage Restorer

Abstract Induction furnaces are used in wide quantity under different capacities for annual production of around 25 million tons of iron and steel in India. It plays a vital role in various manufacturing processes around the world for melting different types of metal scraps i. e. Copper, Cast Iron, Aluminium, Steel, Brass, Bronze, Silicon, Gold, Silver etc. which are further used in many other industrial applications. The induction furnace causes a huge disturbance to the utility and nearby consumers during its operation due to its non-linear characteristics. This is a serious phenomenon responsible for power quality degradation in the power system. This paper presents methodology to improve the power quality degradation caused by induction furnace using Dynamic Voltage Restorer (DVR) which is a type of custom power device. The real time data has been taken from an industry employing induction furnace for production of ingots from scrap material. The experimental readings are measured using power quality analyser equipment. The simulation of whole plant is done by analysing this same data and the simulation results are compared with actual onsite results. Then, solution methodology using DVR is presented which revealed that the implementation of DVR is an effective solution for voltage sag mitigation and harmonics improvement in induction furnace.

A Novel Research and Implementation of Dynamic Voltage Restorer

This paper discusses a novel research and implementation of dynamic voltage restorer (DVR).The phase diagram is shown based on the principle and the steady-state equivalent circuit. The initial phase of the source fundamental voltage and angle are given according to instantaneous reactive power (IRP) theory. The voltage function is determined by the optimum voltage injection angle which is based on minimum energy compensation (MEC). A prototype and the design process are given. The experimental results verify the rationality .

Design and Implementation of Dynamic Voltage Restorer for Harmonic Compensation

This paper presents the proposed system of Dynamic Voltage Restorer (DVR) for Harmonic compensation. The proposed system is developed by implementing DVR with energy storage and supply side shunt converter topology along with Z source inverter. Hysteresis band voltage control is used in which modulation frequency is made constant by modulating the band with the system parameter. The hysteresis control technique is analyzed, where the accuracy of compensation for voltage harmonics found at the input source. The proposed topology is simulated using matlab-simulink and its performance is evaluated in comparison with a conventional controller. In each scenario, total harmonic distortions (THDs) are measured along with corresponding waveforms and the results are justified accordingly.