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000000455 001__ 455
000000455 037__ $$aENY-PREPRINT-2014-015
000000455 041__ $$aeng
000000455 088__ $$ahttp://dx.doi.org/10.1016/j.jestch.2014.07.005
000000455 100__ $$aChitti Babu, B$$uInstitute of Electrical Power Engineering, Wroclaw University of Technology, Poland
000000455 245__ $$aAnalysis of SDFT based phase detection system for grid synchronization of distributed generation systems
000000455 260__ $$c2014-05-17
000000455 300__ $$a9p
000000455 500__ $$aB. Chitti Babu, et al., Analysis of SDFT based phase detection system for grid synchronization of distributed generation systems, Engineering Science and Technology, an International Journal (2014), http://dx.doi.org/10.1016/j.jestch.2014.07.005
000000455 520__ $$aA fast and exact detection of phase and fundamental frequency of grid voltage/current is essential for calculating accurate reference signal in order to implement the control algorithm of inverter-interfaced distributed generation (DG) system and realize precise harmonic compensation. However, the methods adapted in the literature based on phase locked loop (PLL) exhibits large phase error, be difficult to implement, and their performance is also indistinct under conditions where the grid frequency varies or the supply is distorted with low frequency harmonics. This paper explores an improved phase detection system for DG system based on Sliding Discrete Fourier Transform (SDFT). The proposed SDFT based phase detection shows a robust phase tracking capability with fast transient response under adverse situation of the grid. Moreover, SDFT phase detection system is more efficient as it requires small number of operations to extract a single frequency component, thereby reducing computational complexity and simpler than DFT. The superior performance of proposed SDFT phase detection system is analysed and the obtained results are compared with Discrete Fourier Transform (DFT) filtering to confirm the feasibility of the study under different grid environment such as high frequency harmonic injection, frequency deviation, and phase variation etc.
000000455 6531_ $$aSliding Discrete Fourier Transform (SDFT)
000000455 6531_ $$aPhase detection
000000455 6531_ $$aDistributed generation (DG)
000000455 6531_ $$aFrequency response
000000455 6531_ $$aDigital filtering
000000455 6531_ $$aGrid synchronization
000000455 700__ $$aSridharan, K$$uDepartment of Electrical & Electronics Engineering, SAVEETHA University, Chennai, India
000000455 700__ $$aRosolowski, E$$uInstitute of Electrical Power Engineering, Wroclaw University of Technology, Poland
000000455 700__ $$aLeonowicz, Z$$uInstitute of Electrical Power Engineering, Wroclaw University of Technology, Poland
000000455 8560_ $$fzbigniew.leonowicz@pwr.wroc.pl
000000455 8564_ $$uhttp://zet10.ipee.pwr.wroc.pl/record/455/files/$$zAccess to Fulltext
000000455 909CO $$ooai:zet10.pwr.wroc.pl:455$$pglobal
000000455 980__ $$aPREPRINT