'VSB Technical University of Ostrava, Faculty of Electrical Engineering and Computer Sciences'
Doi
Abstract
The paper presents a vector control with
two cascaded loops to improve the properties of Dynamic
Voltage Restorer (DVR) to minimize Voltage
Sags on the grid. Thereby, a vector controlled structure
was built on the rotating dq-coordinate system
with the combination of voltage control and the current
control. The proposed DVR control method is modelled
using MATLAB-Simulink. It is tested using balanced/
unbalanced voltage sags as well as fluctuant and
distorted voltages. As a result, by using this controlling
method, the dynamic characteristics of the system have
been improved significantly. The system performed with
higher accuracy, faster response and lower distortion in
the voltage sags compensation. The paper presents real
time experimental results to verify the performance of
the proposed method in real environments
