000			a
999			_c10617 _d10617
003			OSt
005			20191219121332.0
008			191219b xxu||||| |||| 00| 0 eng d
040			_aAIKTC-KRRC _cAIKTC-KRRC
100			_911297 _aRemya Mol N.
245			_aTransformer-Less Dynamic Voltage Restorer Employing an Asymmetrical Seven-Level Inverter with Reduced Number of Switches for Improving Power Quality
250			_aVol.4(1), Jan-June
260			_aNew Delhi _bJournals Pub _c2018
300			_a31-38p.
520			_aIn modern power system, power quality is one of the major concerns. It has become important, especially with the introduction of smart grid, grid-connected renewable energy systems and sophisticated devices, whose performance is very sensitive to the quality of power supply that results in a failure of end-use equipment. One of the major power quality disturbance dealt here is the voltage sag. To solve this problem, custom power devices are used. One of those devices is the dynamic voltage restorer (DVR), which is the most efficient and effective modern custom power device used in power distribution networks. In this paper, a transformer-less DVR based on the modified asymmetrical multilevel inverter is proposed. This multilevel inverter uses reduced number of switches. As a result, the proposed DVR has lower number of switches in comparison with other multilevel-inverter-based DVR topologies. Also, it has lower loss and cost due to no need for injection transformers. Its appeal includes lower cost, smaller size, and its fast dynamic response to the disturbance. It can provide the most economical solution to mitigation voltage sag by injecting voltage as well as power into the system. The performance of the proposed model is simulated in MATLAB/Simulink environment.
650		0	_94623 _aElectrical Engineering
700			_911298 _aAnciya, S. S.
773	0		_tInternational journals of power electronics controllers and converters _dNew Delhi Journals pub
856			_uhttp://ecc.journalspub.info/index.php?journal=JPECC&page=article&op=view&path%5B%5D=734 _yClick here
942			_2ddc _cAR