DYNAMIC VOLTAGE RESTORER USING PI CONTROLLER FOR VOLTAGE SAG SWELL MITIGATION USING MATLAB
Keywords:
DVR, Power Quality, Voltage Sag, Voltage swell. PI Controller, Pulse width modulation, MATLAB/SIMULINKAbstract
Power quality has been a issue that is increasing now a day in industry and commercial application. Modern
industries employ sensitive and sophisticated equipment to increase energy efficiency and productivity. Voltage
disturbance in the form of voltage sag and swell can cause several processes in industry and result is economical loss. To
resolve these issues many custom power devices are used. One of the device is Dynamic voltage restorer (DVR) .which is
most efficient and reliable custom power device. DVR normally connected in series between the source voltage and
sensitive load. The main function of DVR is quickly mitigating the voltage sags in the system and restores the load voltage
to the pre-fault value. In this project present modelling and controlling of DVR using Proportional and integral (PI)
controller for voltage sag swell mitigation when induction motor load in connected in the system. The simulation is
performed using matlab/simulink simpower system
