TMS320C6713 Based Harmonic Analyzer a Case Study

Presence of harmonics in a power system is a major concern to power engineers for many years. With increasing use of nonlinear loads in power systems, the harmonic pollution becomes more serious. When the magnitudes and orders of harmonics are known, reconstructing the distorted waveform is simple. Adding the harmonics together, point by point, produces the distorted waveform. Decomposing a distorted waveform into its harmonic components is considerably more difficult. This process requires frequency analysis, which involves a fair amount of calculation. The wavelet transform (WT) relative to some basic wavelet, provides a flexible time-frequency window which automatically narrows when observing high-frequency phenomena and widens when studying low-frequency environments. A wavelet is a waveform of effectively limited duration that has an average value of zero. One of the widely used computation algorithm for harmonic analysis is Fast Fourier transform (FFT). This paper reports an attempt of implementation of TMS320C6713 based harmonic analyzer. First, the supply voltage is stepped down using a step-down transformer. The output of TMS320C6713 DSK is observed on oscilloscope.