A NOVEL MICROPROCESSOR METER OF REACTIVE POWER

Abstract: This paper explains a new interactive power meter achieved by TMS 320 a digital signal processing (DSP) technique that defines equation conditions. Q_x = √ { V_rms^2 ∑_(n=1)^∞〖( Qn Vn)^2 }〗 for the importance n harmonics. The definition of reactive current is useful because by reduces its value, while the maximum PF (power factor) can be obtained for non-genetic systems. To achieve the simultaneous current and voltage spectra, we used for the 2 sets of actual data, a discrete Fourier transform (DFT), the current and voltage spectra are taken simultaneously and then processed both spectra of the imaginary and real parts to obtain the term of the equation above. Using a single-chip microcomputer (TMS320) to investigate some of the results of the simulated measurements.