Multi-level converter topologies are increasingly being used in various applications due to their high power, voltage, and low harmonic levels the output waveforms. These produce different voltage have a highly modular structure. This paper proposes design of dynamic restorer (DVR) based on multilevel topology enhance profile improve power quality network. The DVR is an effective, fast-acting d...

In this paper a new topology for Dynamic Voltage Restorer (DVR) with high frequency link is proposed. This topology is able to compensate different types of voltage disturbances such as voltage sag, voltage swell and voltage harmonics. According to the obtained equations, this topology operates as a controllable current source to charge the series capacitor. Due to using High Frequency Transfor...

The use of sensitive electronic equipment has increased now a days which has lead to power quality problems. The various power quality disturbances are transients, interruptions, voltage sag, voltage swell, voltage collapse, harmonics etc. To solve these power quality problems various custom power devices are used. Dynamic voltage restorer (DVR) is a custom power device used for the Compensatio...

Power quality is one of major concerns in the present era. It has become important, with the introduction of sophisticated devices, whose performance is very sensitive to the quality of power supply that results in a failure of end user equipment’s. One of the major problems dealt here is the voltage sag. To solve this problem, custom power devices are used. One of those devices is the Dynamic ...

In this paper the effectiveness of a Dynamic Voltage Restorer controlled by neural network for voltage sags/swells mitigation is shown. A typical configuration of DVR is implemented by using MATLAB Simulink®, which is controlled using backpropagation neural networks. The good performance for voltage sags/swells mitigation of the DVR controlled with neural networks can be observed by means of se...

Custom Power devices like Dynamic voltage restorer and STATCOM are normally employed as a solution for mitigation of power quality problems like voltage sag and swell. In this paper new voltage sag compensators based on an autotransformer and an IGBT switched by PWM technique and Hysteresis Voltage Control (HVC) method are compared. These two schemes are able to recognize the voltage sag condit...

AbstractThe dynamic voltage restorer (DVR) is a series connected device for mitigating voltage sag/This paper presents with feed forward pre-sag/swell voltage control method to regulate the output voltage of pulse width modulated (PWM) voltage source converter (VSC). The proposed controller maintains a constant load voltage under the multiple balanced/unbalanced dynamic PQ disturbances. The pro...