A Study On Power Quality Detection Based On DSP

This paper,for the harmonics current detection in the design of ActivePower Filters,presents an Equal-angle Interval software Synchronous SamplingAlgorithm based on DFT,which reduces the affect of spectrum leakage to theharmonics analysis.The theory and the simulation show the algorithm has highaccuracy and high reality and can be used in the design of APF.The paper alsoanalysises the synchronous errors in the measurement of non-sinusoidal ACsignals,points out the relation between the synchronous errors and the signaldistortion,the first sample point,and power factor, then gives some methods to reduce it. In order to validate the ideas above,give an data-acquisition system based onTMS320VC5402 DSP.The system provides two communication ports.One is theHPI,which is used to communicate with PC through EPP,the other is a softwareUART with MCU.At last, the paper provides the realization process of the Bootloaderand the on-line prograxmning method of FLASH clearly.