Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Study on the Harmonic Extraction Technique of the Power Conditioning System using High Performance DSP Controller
Authors 李Jeong-Eun Lee ; Jun-Ki Min ; Il-Song Kim
DOI 10.6113/TKPE/2010.15.4.266
Page pp.266-273
ISSN 1229-2214
Keywords Harmonic extraction; PCS; DFT; THD; DSP
Abstract The main function of the power conditioning system (PCS) is grid-connection with renewable system. The level of total harmonic distortion(THD) caused by the PCS should be maintained less than 5% according to the IEEE-1547 regulation. The THD is measured by the dedicated instrument, not by the PCS in the domestic products. There should be the necessity for harmonic measurement by the PCS in order to cope with degradation or fault condition. In this paper, the real-time harmonic measurement technique using highperformance DSP controller is presented. The proto-system is manufactured using 32-bit floating DSP processor and tested with 256-point DFT(Discrete Fourier Transform) algorithm. The test result shows that the harmonic calculation time is less than 1 [㎳]. It can be used as a auxiliary method for predicting the fault in the PCS system.