Simulation of PV based Z-source DVR for Power Quality Improvement

Abstract

This paper proposes a photovoltaic (PV) system, which exhibits a set of benefits when draw parallels to conventional stand-alone PV system. In the present system, the generated energy by the PV arrays is managed by multi-string step-up converters. Voltage swell and sag is big brain-teasers in power system. Sensitive load has a serious effect on itself due to voltage swell and sag. Dynamic Voltage Restorer (DVR) is a power conventional appliance used in power distribution network. Various equivalent circuit models of a PV cell have been proposed. For obtaining high power, numerous PV cells are connected in series and parallel on a panel, which is a PV module. A PV array is defined as a group of several modules electrically connected in series-parallel combinations to generate the required current and voltage. The dynamic voltage restorer (DVR) has become renowned as a cost competent conclusion for the security of sensitive loads from voltage swells and sags. Power quality is one of the considerable attention in the existing power system environment. Dynamic Voltage Restorer (DVR) is a modified power apparatus that is utilized to enhance voltage stability i.e. to minimize the power quality problems in electrical power system network. The suggested control scheme is elementary to model and has outstanding voltage compensation capabilities, through hysteresis voltage control technique is efficacious of proposed technique is examined through computer simulation. To felicitously control the control objectives for compensation voltage control, primarily the power circuit of a DVR system is analyzed with PV system. The model is humble. The Simulation results are fetched out by Simulink/Matlab to verify the performance of the present method.