Implementation of Single phase Dynamic voltage restorer with Flux vector modulation switching of Single phase inverter
Keywords:Power Quality, Custom Power Devices, Dynamic voltage Restorer, mitigation of sag and swell, Flux vector modulation.
Dynamic Voltage Restorer is a custom power device used for the mitigation of voltage sags-swells, to
improve power quality which is the major concern in power systems. DVR has good compensating capabilities when
compared to commonly used compensator. Thus static series compensator (SSC), commercially known as Dynamic
Voltage Restorer (DVR) is capable of compensating voltage sag-swell by injecting appropriate voltage at the supply side
with the help of the series injection transformer or booster transformer. This transformer helps to maintain constant load
voltage. DVR consists of injection transformer, voltage source inverter (VSI), passive filters and energy storage device.
Efficiency of the DVR depends on the efficiency of control technique for the same and proper switching technique for the
voltage source inverter. This thesis proposes the Simulatory implementation of single-phase Dynamic Voltage Restorer.
The flux vector modulation technique will be used for inverter switching.